C3 corvette heater core bypass . C3 Tech/Performance. C1 & C2 Corvettes; C1 & C2 Corvettes for Sale/Wanted; C1 & C2 Parts; C1 & C2 Vendor for Sale; General Corvette Topics. The plugs or 5/8 C4 Tech/Performance - Heater Core Bypass help - Hey everyone, My heater core is beginning to fail, so until I can fix it later this summer I was going to bypass it since I would not need heat til the winter. this all started with a bad exhaust valve thinking I could It sends vacuum to the heater control valve and that valve then shuts off the flow of hot water to the heater core. Plus you can always turn it off during the summer with a bypass :cheers: [Modified by Alwyn678, 1:12 PM 5/9/2002] Reply. I have a 1975 Corvette and from time to time, I will find ~ 1/2 cup of coolant on the ground underneath the passenger side of the vehicle. Login/Register Heater Core Bypass (13/23) 6/9/09 1:03pm. It was so bad in fact, that when I would drive down the C3 Corvette Parts Auctions on eBay Corvette Books C3VR Member Name Badges C3VR In-Stock Apparel & Accessories C3VR Custom Apparel & Accessories @ Zazzle C3VR Window Stickers C3VR Member Deals & Discounts C3VR Member Calendars Shop Amazon. I?m told that connecting the heater hoses from the LS pump to the C3 heater valve and heater core will cause the engine to overheat. I live in Florida. C3 Tech/Performance; C3 General; C3s for Sale/Wanted; C5 Tech Corvette Tech/Performance: LS1 Corvette Technical C3 Tech/Performance - Heater core bypass - What size fittings do I need to bypass the heater core? Iwant to plug it at the water pump and also at the intake. C3 Tech/Performance - Question on shut off valve on the coolant line to the heater core - Can someone tell me what size line this is or what size (diameter) valve I need for a 77 L48 stock line. Corvette of the Year Winner 2017. now it's 180 deg. It cools better now and I get vent temps of 43 degrees. Top Contributors this Month View All. Jump to Latest 20K views 27 replies I am attempting to place a heater core bypass on my 1980 Corvette. I deleted all the AC stuff and need to get a cover and blower, but wont do that for a while. live in California drive it during summer never have used the heater. C7 Corvette, 2014 - 2019. Thread Tools C5 Tech - Heater core bypass - Was out picking up a part for my wife's car yesterday afternoon and once I arrived home and was pulling into the garage, smoke started coming in from all the vents. Chasbro 38 Replies. Thake your time, it is a pretty east job but kind of time consuming. Dont want to tear the dash apart if I dont have to thanks. to the front of the core cover along with 10mm screw holding the by-pass pipe to the top of the cover. I've decided I'm going to put a heater core bypass in the car once I fix the heater core. The only time the C3 heater valve will open allowing flow through heater core is went the heat inside the car is selected. C3 Tech/Performance; C3 General; C3s for Sale/Wanted; C5 General General C5 Corvette and C5 Z06 Discussion not covered in Tech Heater core bypass? Reply Subscribe . Reply I did the same thing but didn't bypass, it just shuts off C3 Tech/Performance - Heater-Core Bypass How? - Hmmmm, so I have been trying to make sense of the hose routing to bypass my newly discovered, slow leak heater core. C3 Corvette Heater core bypass. C3 General General C3 Corvette Discussion not covered in Tech. Locate the previously identified hoses - one from water pump to heater core, other intake to heater core. I had to bypass it in the parking lot and walk to Ralphs to get some distilled water. the hard part is breaking loose the tar seal around the heater core tubes. Remove the old heater core and replace. , The existimg control valve C3 Tech/Performance - Heater Hose Removal - Can I just remove the two hoses to the heater core and plug the two holes one in the intake manifold, the other in the water pump? Should a bypass be run from one to the other to respect flow? Reply Like. ). C3 Tech/Performance; C3 General; C3s for Sale/Wanted; C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External C3 Corvette Forums. Resealing and testing the operation of the heater box is also shown and is of equal C3 General - Heater Core block off or bypass - As I drive there is radiant heat that blows into the car from the heater core. My heater core is leaking antifreeze so in order to get the car running without replacin C3 Tech/Performance - Heater Core Bypass - I recently purchased a Stingray and in short order, the core started to leak. I cannot find a fitting that lets me connect 3/4 hose to 5/8 hose to bypass. She is usually garaged , battery rendered and Covered. You can by-pass the heater core ONLY and will have to make an adapter due to the different sizes. I cheated and put a U-hose in place to bypass my heater core, in the engine bay. Sponsored by: Bypass Heater Core. Everyone seems to complain about the additional heat from the heater core resulting in many people installing a shutoff valve. Pulled over and noticed a ton of gold like fluid dropping out from under the passenger side door. The heater worked great for about a C4 General Discussion - 92 heater core bypass routing - I could tell from the last few months watching the level in the overflow tank slowly drop that I had a coolant leak somewhere. C3 Corvette. Adams' Apple A lot words in your explanation above. Now the temp gauge is all over the place. So, for the summer, what is a better plug for the pump and manifold? The C3 Tech/Performance - Heater core by-pass - Hi there guys, I'm replacing my leaking heater core, everything out now. Corvette C3 heater core. Want to use car. C3 Tech/Performance; C3 General; C3s for Sale/Wanted; C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine Bypass Heater Core. I was able to confirm that the coolant outlet on the intake manifold that originally sends coolant to the throttle body is for 5/8 C3 Tech/Performance - Bypassed heater core leads to overheating situation??? - My '69 BB was recently rebuilt and now it runs hotter than ever before. Guys have simply used screw-in plugs for the in-take manifold and water pump. could take a while -- if you don't need your heater you may be able to just bypass the heater core. I'll take a look C3 Tech/Performance - Heater Core Bypass - For those of you that bypassed the C3 Tech/Performance - Heater Core Bypass - For those of you that bypassed the heater core, did you just run a bypass hose or cap off the inlet/outlet at the pump? External Engine, Basic Tech and Maintenance for the C3 Corvette. Can anyone tell me if it'll be ok to bypass the heater core and still use the car without a problem? C7 Corvette, 2014 - 2019. ? - Okay so a while ago, it was recommended that I install a shut off valve to keep hot radiator fluid from going to my heater core to help keep the inside temp down a bit. This is a temp solution for a couple of months until I have the vintage air wired and charged. Anyway, I decided to take the Corvette out for a ride. Especially if you live in a warm climate or only drive in warm months. Is it just me? The valve is a 3/4 pex ball valve (fits perfect C4 Tech/Performance - Heater core bypass - Hi all, Need to change heater core and also locate a heater valve (missing) for my 84'. Also, you can bypass the heater core from the engine compartment side (with a C5 General - Heater core bypass - Hey all, did some searching and can't find an answer. I want to run hoses and not plugs. Complete Corvette About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Once you have it out open it up to expose the heater core. C3 Corvette Forums. I made a quick repair by running a bypass hose from the water pump to the intake fitting. For the life of me I can not find it on my car. I didnt read anyone else saying they had this problem in the big shutoff valve thread. 1968-77 (C3) Heater Core With Air Conditioning . I am concerned about plugging holes C3 Tech/Performance - Heater Core leaking - Now I have the dreaded heater core leak and my carpet is soaked. I live in Houston Texas so it gets a bit warm here in the summer months and freezing some times in the C3 Tech/Performance - Heater Core Bypass - one plug better than another??? - Had the antifreeze leaking out the heat duct in the cabin. We've redone the brakes, and now it's time to do some motor work. a functioning part of the car and Heat is nice in the winter. Do I need to run a short hose from the water pump outlet to the inlet on the intake manifold to bypass the heater core, or C3 General - Heater core bypass - Hi guys, I?ve got a leaking heater core so I need to bypass it. 1 Nov 29, 2024 | 12:07 AM Share #15 Five. Block w/ plugs the intake & water pump connections. replacing the heater core vs I just did this Carefully loosen the hose clamps at the diverter valve assembly (to the 2 3-4"hoses going into the firewall). - I will be installing my L82 engine and T 10 4 speed very soon and will need to re-route the heater hose since all of the A/C and heater system has been removed. I made it about a mile C3 Corvettes, 1968 - 1982. C3 Corvette Heater Core Replacement Heater core is now definitely beyond stop leak. Reply . I know there's been a lot of discussion about bypassing the heater core, to avoid heat in the cabin, or simply clean up the engine bay. Looking at the C4 General Discussion - 1985 Heater core leak - help with Bypass - I was driving to work this morning and noticed a terrible smell and a continuous fume coming from the top vent under the windshield. as well as other places. CorvetteForum - C3 Tech/Performance - Heater core bypass - Hello everyone, as i mentioned in the title i have done a heater core bypass because my heater core was leaking inside the car. I'm getting mixed responses. 1968 C3 Tech/Performance - Heater Core- Non-AC '69 - Just replaced the heater core on my C3 and it was the easiest thing ever done to the car. It is predominately a Show Car so I rarely drive her anywhere during the Winter months. Years ago, I simply did a bypass of my heater core in my 76 Grand Prix by taking the two heater hoses and running them from one to the other with a metal fitting. Thread Starter C3 Corvette Parts Auctions on eBay Corvette Books C3VR Member Name Badges C3VR Apparel & Accessories @ Zazzle C3VR Window Stickers C3VR Member Deals & Discounts C3VR Member Calendars Shop Amazon. Like Corvette Kid said, Do NOT by-pass the surge tank!!!! Heater core inlet hose is 5/8" and the outlet hose is 3/4", but formed up to 1" where it hooks onto the surge tank. its the third hole C4 General Discussion - C4 Heater Core - Can I Bypass it?? - My Heater Core has started to leak on my 87 Coupe. There is a right way and a wrong way to do the heater core bypass on the LS1 motor in the C5 (1997-2004) Corvette. Is ther any advantage to either one. Login/Register C3 Tech/Performance - Heater Core brands - which is best? - In finishing up a restoration on my '69, noticed my heater core is leaking before all the interior goes back together. C8 Z06/ZR1/Zora Discussion; C8 ERay/Hybrid/EV Discussion; C8 General Discussion; C8 Tech/Performance; C8 Forced Induction/Nitrous; C3 Corvettes, 1968 - 1982. I live in Texas where it gets very hot during the summer. Reply My Corvette has a heater hose mounted shut off valve (like most other C3's). C3 Tech/Performance; C3 General; C3s for Sale/Wanted; C4 General Discussion General C4 Corvette Discussion not covered in Tech. This little beauty fills the bill o C3 Corvette Parts Auctions on eBay Corvette Books C3VR In-Stock Apparel & Accessories C3VR Member Name Badges C3VR Custom Apparel & Accessories @ Zazzle C3VR Window Stickers C3VR Member Deals & Discounts C3VR Member and then loop the heater core hose back to itself though, one hose is a little bigger than the other, in diameter, so, you C3 Tech/Performance - Exact Fit Heater ByPass Hose for AC Delete Vettes - Hi guys. five-six. There is a short hose that runs from C1 & C2 Corvettes - Heater core bypass - My car came with the bypass that re-routes heater core's 3/4 coolant line. I intend to bypass the heater core and not remove or replace the heater core. Opened up the C3 Tech/Performance - Heater Core:By-Pass or Shutoff Valve? - In the quest to make the cockpit of my '78 Daily Driver more comfortable/cooler I want to either by-pass the heater core or install a shutoff valve. I play with the controls and the blower C3 Tech/Performance - LS swap heat options - Stock LS routes water thought the heater core full time. Can I just cap off heater core,I think I have a leaking heater core,or did at some point,I don’t have the hoses hooked up to manifold,because fuel line is in the way of hose,so when I did new heads,intake,carburetor replacement,I never did hook either of the hoses back,so don’t have the one going to the water pump either,question,does those hoses need to circulate C3 General - Heater Core Bypass - Anyone have any images/videos on how to do a heater core bypass? Mine crapped itself and was planning on just bypassing it, but I'm not entirely sure how. (With AC) DISCLAIMER: This procedure may vary from Corvette to Corvette. Aside from stopping the leak, some guys opt to simply bypass the heater core vs replacing it. At least until you can get Description and tips on Heater Core replacement for C3 Corvette. The brakes haven't arrived yet. ) and bypassed the heater (pulled the hoses off and connected them to make one hose which goes from the C3 Tech/Performance - Heater core shutoff causing overheating - I just installed a heater core shutoff valve in my car and like the title says, my car now overheats. Thread Tools Search this Thread Jul 6, 2023 | 11:29 AM Share C3 Tech/Performance - Heater Core Bypass - Can anyone show me the best place to do a heater core bypass on a '73 L-48 w/AC? I saw a few threads when I did a search, but nothing definitive. :laughing: On my 1987 Mercury Sable I used to have, the Heater Core had this horrible leak. Tried NAPA, Home Depot, etc. Reply Subscribe . I only drive the car infrequently in good weather during the spring, summer and fall. Corvetteforum. Sponsored by: And mounted it down by the heater core where it won't be seen. SGC5FOAL 41 Replies. I installed the vacuum valve last week. Thread Tools Search this Thread 04-24 C3 General - Heater core bypass - shutoff. If I run a small hose from the C4 Tech/Performance - Heater core bypass - Hello all, My question is in regards to an 84 w/ auto. Coolant recovery S3E8 In today's episode I will show you how to bypass a heater core. View Next Unread. It will get you home but can sure leave you cold! Eckler's is proud to offer this replacement heater core so you can enjoy your Corvette in all seasons. If it's C3 Tech/Performance - Heater bypass - My dad gave me his Corvette, I've spent the last summer ironing things out, yeah my dad was a little bubba on things. 2016 C3 of Year C3 Tech/Performance - Heater Core Bypass and Overheating - I have an '82 which had a leaking heater core. any advice out there , if I do bypass should S1E7 heater box , Corvette C3 blend doors , heater core . From Certainly, the topic of heat inside a C3 has been discussed a number of times. Quote Re: Heater Hose I was trying them out and gave a little tug on one of the hoses and broke the weld going in to the heater core , so I have C3 Tech/Performance - AC work with heater core bypassed? - I have a 77 that has the heater core bypassed just wondering if the AC will still work. C3 Corvettes, 1968 - 1982. Read that going with a GM/AC Delco heater core is the best route - however I can't find any vendors C3 Corvette Parts Auctions on eBay Corvette Books C3VR Member Name Badges C3VR In-Stock Apparel & Accessories C3VR Custom Apparel & Accessories @ Zazzle C3VR Window Stickers C3VR Member Deals & Discounts C3VR Member Calendars Shop Amazon. Sponsored by: Heater-Core Bypass How? Reply Subscribe . Internally C3 Tech/Performance - Heater Core bypass - Hi, Guys, I would like to bypass my heater core in my 1978 L48 w/AC. C3 Tech/Performance - Coolant Leak - Heater Core? - I will have to admit that I am a novice, but I have a large coolant leak in my '68 non A/C around the passenger side wire wall that is puzzling me. C3 Tech/Performance; C3 General; C3s for Sale/Wanted; C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External you have to remove after the dashpad. Vintage A/C to be installed at later date. So either you drive around with heat on all time, or install a bypass. Some use a 5/8 to 3/4 inline connector to connect the hoses in a loop bypassing the heater core. Now, the engine is running 60 degrees hotter than it was C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette. Triple dizzle 52 Replies. Locating a new one wasn't particularly easy. the heater core took a crap I either replace or bypass , thinking of bypassing it. I did find a few suppliers online and I ordered one from Corvette Central along with some Wilwood brakes. I changed: blocks, thermostats (was 160 deg. C4 General Discussion - Bypass heater core in 93 vette - I'm looking to bypass the heater core in my 93 vette until I get a chance to replace the core. So I need to replace the heater core. I'm so close to wrapping things up but I cannot find a decent diagram to illustrates exactly how to run the two hoses from the heater core and the two hoses coming from the manifold C3 Tech/Performance - what is a waterpump bypass hose? - On a Vette are they the same as heater hoses? :confused: I am seriously considering bypassing the heater core as I am missing the pipe that runs under the A/C compressor and I am seeing too many places where they can chaffe. I showed a mechanic my Bypassing the heater core is a temporary solution at best. To completly bypass heater core, below ain't the way Go to nearest auto parts, or home depot/lowes, and get 2 cut off valves - 1 5/8ths and 1 1/4th. Back to Subforum. C3 Tech/Performance - Bypass the heater core??? - I discovered last night the the heater core has gone bad. Sponsored by: Bypass heater For Bypass have a port in top of water pump with a small hose running to front of intake manifold. The car has AC and cannot see the hoses for the heater core entering or In this video I show you the step by step on how to replace a heater core in a C3 corvette. C7 ZR1 Discussion; C7 General Discussion; C7 Tech/Performance; C7 Z06 Discussion; C7 Forced Induction C3 Tech/Performance - Another Heater Bypass Question - Read through a bunch of posts on this topic but not sure about the final hose routing for a smallblock. From underneath the car, if I cut the 2 hoses coming off of the heatercore lines C3 Tech/Performance - Bypass heater core - I just bypass the heater core, i plugged the intake , water pump & heater hoses. Anyone done anything like that? Thanks everyone. However, some guys tend to do C3 General - Bypass Heater Core - I am wanting to bypass the heater core in my 78. I know some folks have discussed the bypassing of the heater core, but I glanced around and did not find one specif heater core bypass? - CorvetteForum - Chevrolet Corvette Forum Discussion C3 General - heater core bypass? - hi all, need some advice have a 1972 . C3 Tech/Performance; C3 General; C3s for Sale/Wanted; C5 General General C5 Corvette and C5 Z06 Discussion not covered in Tech Heater core bypass. I think a double bypass would solve the issue, allow water to loop back even if the mechanical shut off valve behind it were closed. Suggestions welcome. C7 ZR1 Discussion; C7 General Discussion; C7 Tech/Performance; C7 Z06 Discussion; C7 Forced Induction/Nitrous; C7 Dealer On the way over I blew the heater core. any advice out there , if I do bypass should I just connect the hose from the manifold to I didn't see he had a leak issue. Sponsored by: Coolant C3 Corvette Parts Auctions on eBay Corvette Books C3VR In-Stock Apparel & Accessories C3VR Member Name Badges C3VR Custom Apparel & Accessories So thus I want to bypass it. Joe. I don't trust my The heater core is for the heater to work. Sponsored by: Heater core bypass. Sponsored by: 79 AC and Heater Core Removal. Until the winter when I plan to replace it, I am told by reputable sources that I can do the following temporary bypass: detach the two hoses from the HC inlets, inserting one marble or ball bearing into each hose, and then reatach them. Is it OK to use a shutoff valve and stop the flow of water altogether C3 General - Bypassing The Heater Core - Last month we had a couple really nice days and the snow hadn't fallen yet, so the roads were salt free. Some have argued that C3 Corvettes, 1968 - 1982. Some say to install threaded plugs in the intake and water pump, so hot coolant is not bypassing the radiator. To my surprise nothing happens. You can put off forever. The passenger floorboard is not wet but I was pretty sure it was the heater core so I decided to bypass it the other day. I know some folks have discussed the bypassing of the heater core, but I glanced around and did not find one specif C3 Tech/Performance - Bypassing the heater core. it kinda looks like a crooked letter "P" with one hose going in and C3 Tech/Performance - 71 BB Heater Core/All Hose Routing - I completely rebuilt the AC in my 71 big block converting from R12 to 134a. Thread Tools Search this Thread 06-27-2022 | 06:49 PM Small block Chevy engines have a coolant bypass built in. Sponsored by: Heater core by-pass. AVS Forum C3 General - heater core bypass? - hi all, need some advice have a 1972 . Thread Tools Search this Thread Apr 25 C5 Tech - Heater core bypass - Been wanting to bypass my heater core for a while since I don't need the heater and it's just one less thing to potentially break on me. I hop in it this morning and attempt to turn on the defrosters. OE vortec also have the conventional water pump port on passenger side for heater core C4 Tech/Performance - heater core bypass '92 LT1 - 92 LT1 ok i have have fogged up windows and coolant dripping from my under the passenger dash on to the floorboard. Sponsored by: Heater Core Bypass. I planned on using it in my LS swap. All said C3 Tech/Performance - 72 Vette Heater Core Bypass Question - I just finished completely restoring the A/C system in my 72 to all original condition and R12 charge ( was 134 - but unsatisfactory cooling). Thread Tools Search this C3 Tech/Performance - Heater Core Bypass Questions - I am doing my engine over and was considering installing heater core bypass valves. I cannot find the intake and or exit lines coming through the firewall when looking from under the hood. Type in "C3 Corvette heater bypass" and you will find LOTS of threads on this forum. C7 ZR1 Discussion; C7 General Discussion; C7 Tech/Performance; C7 Z06 Discussion; C7 Forced Induction/Nitrous; C7 Dealer Inventory; C7 Corvettes for Sale; C3 General - 1972 Heater Core - 1972 Corvette, 350, A/C, 4 speed How difficult is it to change out the heater core? Where is the best place to buy Corvette replacement parts? What is the best site for online manuals? C3 General General C3 Corvette Discussion not covered in Tech. Joined: Oct 2006. 0 C3 Tech/Performance - ByPass Heater Core - Hi Everyone, I Just installed my new motor and decided to bypass the heater core. I had the vacuum source connected to the wrong line. 10-11-2006 | 02:49 PM #4 rotgirl. Sponsored by: 1972 Heater Core. Also buy C3 Tech/Performance - Heater Core Bypass pics?? - I know this topic has been covered many times, but my heater core just went out and I want to bypass it until I have time to do the switch. Does anything need bleed after or will the air you let C4 Tech/Performance - Heater core bypass problem - Heater core went. Thread Tools Search this Thread Aug 20, 2018 | 10:50 PM Shuts the water pff to the heater core and the cabin will be cooler. C3 Tech/Performance; C3 General; C3s for Sale/Wanted; C4 Tech/Performance L98 Corvette and LT1 Corvette CorvetteForum - Chevrolet Corvette Forum Discussion; C3 Corvettes, 1968 - 1982; C3 Tech/Performance; Instead of bypassing the heater core, can i just plug the intake and water pump? C3 General - Vortec coolant bypass installation with heater - I've searched these forums and others extensively but have not found a satisfactory answer, just lots of disagreement as to whether a bypass is actually required when using Vortec heads. The motor runs cooler without the heater core in play for some reason (probably the old one was blocked and C3 Tech/Performance - TO replace or not replace (heater core) - Hello All, Thanks again for your continued help; I'm thinking about replacing my heater core. Thread Tools Search this Thread C3 General - Heater Core Bypass Needed? - Hello, I do not have a heater core in my car at the moment. Also, can you just cut this line with a cold engine and install it. Posts: 317. Login/Register Heater Core Bypass (1/23) C3 Tech/Performance - Bypassing Heater Core - Hi folks, My heater core is leaking and I don't need no stinkin' heater. Sponsored by: 78 Vette Heater Control Valve Location. Quite similar to conventional BBC. i dont have the $$$ or the time to fix it right now but since C3 General General C3 Corvette Discussion not covered in Tech. Good luck! I just pulled my factory AC and replaced the whole thing with a Vintage Air system. I have read many posts on this forum already so i Heater Core BYPASS maneuver. In the winter just open the valve and you have heat. C3 Tech/Performance - Heater Core Bypass - Can anyone show me the best place to do a heater core bypass on a '73 L-48 w/AC? I saw a few threads when I did a search, but nothing definitive. Please like and subscribe, thanks! C3 Tech/Performance - Should I replace the heater core? - I am going to be replacing everything in my cooling system here as my next project. Corvette C3 heater box. Thread Tools Search this Thread Jun 14, C3 General - Heater Core Bypass - Hi guys, on an 82 Corvette I want to bypass the heater core without noticing it from looking under the hood. So, can I bypass the core by just running a heater hose from the intake to the water pump? Should I use the 3/4 or 5/8 hose? Can I just get a plumbing adapter to make the transition from Lowes? C3 Tech/Performance - Bypass the heater core? - Should i do it because my 78 gets hot as heck on your feet. Would it be a good idea to just take off the 3/5 C3 General - How to bypass heater core? - What's the correct way to bypass the heater core? C3 General General C3 Corvette Discussion not covered in Tech. Jump to Latest 3. Recommended Communities. now remove the 10mm nut holding the div. In C3 Tech/Performance - Heater core bypass - Ok I have read every thread on the forum on this subject. But the typical c3 corvette owners i have known and come across on this forum, are lucky to drive the car 500 C3 Tech/Performance - Heater Core Leaking 82 Bypass? - I have been told that the 82 has a bypass valve for the heater core. Join us for Corvette Forums, community, tech library, Guru dictionary, and more. 1980 Heater Core Replacement. C3 Tech/Performance; C3 General; C3s for Sale/Wanted; C3 Parts for Sale/Wanted; C3 Vendor for Sale; C1 & C2 Corvettes, 1953 - 1967. Thread Tools Search this Thread Jul 7, 2008 | 11:43 AM Share #21 C3 Corvette Forums. Basic Tech and Maintenance for the C3 Corvette. Reply use a tee fitting to split the flow, then the fitting where it splits (the one close to the manifold that feeds the C3 General - Heater core by-pass - Looking for opinions on what to do with hose routing. If you heater hoses are old you will not be able to save them they become very attached to the heater and will have to be cut off. lol sometimes I wish it was about 0 degrees out because it so hot. I do not need heat. Screw sizes may vary and/or procedure may be different for non air conditioned cars or for your 81. I am choosing to bypass the heater core for the summer and will rip it apart this winter to replace the core. Sponsored by: Bypass the heater core. Lots of choices for cutoff valves and some valves that just reroute the hot water so it never enters the cabin. It seems to me that this could C3 Corvette Parts Auctions on eBay Corvette Books C3VR In-Stock Apparel & Accessories C3VR Member Name Badges C3VR Custom Apparel & Accessories @ Zazzle C3VR Window Stickers C3VR Member usually the original shut off was located between the heater core and the engine block. C3 Tech/Performance - Heater Core Bypass - Good Day Folks, New to the forum and new to the sport. Did some searching on the forum. Where should it be located? If I can not find it, can I disconnect and splice the two lines together going to the heater core from the underside C3 Tech/Performance - Heater Core bypass - Hi, Guys, I would like to bypass my heater core in my 1978 L48 w/AC. i think i have a leak either in a hose to the heater core or a hole in the core itself. Log In; C7 Corvette, 2014 - 2019. 1968, 1982, 74, bipas, bypass, c3, chevy, core, corvette, heads, heater, hose, hoses, put, vortec. Likes: 0. C7 ZR1 Discussion; C7 General Discussion; C7 Tech/Performance; C7 Z06 Discussion; C7 Forced Induction/Nitrous; C3 Tech/Performance - 79 AC and Heater Core Removal - How do you replace the heater core on a 79 with AC? LOG IN; REGISTER; Forums. C8 Corvette. Have new one coming but won't be able to install before the weekend. Reply Subscribe This is my first Corvette, and my first time working on this car, If I can figure it out, so can you. I've ran a hose from the manifold to the water pump but was wondering if this is needed, can I just plug both the manifold and the heater core without any problems. would it be ok to connect the 2 hoses that go to the water shut off valve ? and what size connector would I need ?? C3 General General C3 Corvette Discussion not covered in Tech. My boys and I are working with a 74 with the 350 J motor. So the bypass had source when the heater was on. I could C1 & C2 Corvettes - Heater core bypass - My 66' heater core (HC) is leaking. Following the path of other questions for this: Can I get to it from the firewall (1969 427 conv)? Went to bypass the heater core and discovered that the bottom hose is smaller than the top hose and won't fit On the 64 C10 I need to be able to shut off the heater core in the summer while still maintaining flow through the heads. I plan on taking out the radiator and replacing myself (seems too easy to have someone else do) But the heater core might be a different story. Thread Tools Search this Thread C3 Tech/Performance - 69 How to replace heater core - Hey all- anyone ever replaced the heater core in a 69 L46 no A/C? C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic C4 Tech/Performance - 1989 Heater Core Inlet hose diameter throttle body coolant bypass - Going to do the throttle body coolant bypass mod on my 1989. Reply Subscribe C3 Tech/Performance - Bypass the heater core - What is the easiest way to bypass the heater coil, have to replace it, but do not need it until fall. New Member C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette. I now have a shut off valve on the hose coming from the manifold, which O understand is the inflow to the heater core. People are not kidding when they say that the Corvette was built around the heater core! This guide should be used as a secondary guide to the Corvette Service Manual. C3 Tech/Performance; C3 General; C3s for Sale/Wanted; He recently serviced his 94 LT1 Corvette heater core. 5K Yes, to replace the heater core in a 1980 Vette requires disassembly of most of the dash. Sponsored by: Heater Core block off or bypass. Prior to the install, must have spent hours on the Internet, reading manuals, and even talking to some so-called expert Corvette shops about this topic and all were WRONG. Thanks. He has excellent photos and commentary. C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette. Reply. To simplify the issue with the C3 is that heater valve blocks the flow in line 7 - see black X below. C3 Tech/Performance; C3 General; C3s for Sale/Wanted; 1587431605]I got the heater delete hardware from Corvette Central and pulled the whole unit out of my car except for the controls. Jump to Latest C6 Corvette C3 Corvette C4 Corvette C5 Corvette - General Discussion General Corvette Discussions. I am the second owner of the car and don't know if the heater core was ever replaced. guru is your independent Corvette resource. I'm replacing the water pump and alternator, more to be proactive than recognizing any problems. Sponsored by: How to bypass heater core? Reply Subscribe . Racer . ***. CorvetteForum - Chevrolet Corvette Forum Discussion; C3 Corvettes, 1968 - 1982; C3 General; Heater core bypass; C3 General General C3 Corvette Discussion not covered in Tech. So the heater core leaked and I looped the hose C3 Tech/Performance - Bypassing the heater core on a 1980 - There have been a number of posts on the best way to bypass a heater core. Reply C3 General - Heater Core Bypass - Anyone have any images/videos on how to do a heater core bypass? Mine crapped itself and was planning on just bypassing it, but I'm not entirely sure how. C3 Tech/Performance; C3 General; C3s for Sale/Wanted C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine but uses a simple one way C5 General - Heater core bypass? - With the heat on I have been smelling antifreeze in the cabin. Others claim you need to have the coolant continue to circulate, and to C3 Tech/Performance - 81 with AC, Heater Core Replacement - I need to replace my heater core, I have to take the dash apart and undo the hoses from underneath right? If you don't have time to search for weatherstrip, you may want to purchase a weatherstrip kit. Due to the amount of time required to replace it, I just bypassed it and ran a heater hose from the water pump to the intake manifold to complete the loop. Thread Tools I did not remove all the cables or vacum lines the housing has enought play to remove the (2) bolts holding the heater core in. But if I shut the valve off during the summer, it would appear to create issues with the thermostat. Sponsored by: Vortec coolant bypass installation with heater. Also get 4 clamps (they will be at the same location). This is because the C3 heater valve blocks the water flow returning to the pump when C4 Tech/Performance - Bypass Heater Core - Can someone here please help me? C3 Corvettes, 1968 - 1982. com. Autocrossing & Roadracing; Drag Racing; Wheels & Tires; Car Care C3 Tech/Performance - c3 heater not working - I recently bought a 1974 Corvette L82. C3 Tech/Performance; C3 General; C3s for Sale/Wanted; Certainly, the topic of heat inside a C3 has been discussed a number of times. Sponsored by: plugs are WAY BETTER than a bypass i do not run a heater as our cars C3 Tech/Performance - Can I bypass the heater core? - I need to replace the hoses from the water pump to the heater core and from the heater core to the intake manifold. It comes out the defrost,. Can I hook up the hose from manifold to water pump to bypass core and keep it that way over the summer w/o drivability problems and w/o concerns of overheating? Pete C3 General General C3 Corvette Discussion not covered in Tech. Reverse directions to reinstall. Corvette C3 blower motor. Back in the day he added an expansion tank (my dad said it didn't originally have one because it's a big block. Most of the product photos for heater core C3 Tech/Performance - Heater Core Replacement on 69 BB - All, I remember reading about a heater core replacement thread, but was unable to locate it. From: CORVETTE 77 Part 1 details the steps and provides tips on installing a new heater core in an air-conditioned C3 Corvette. rkmyw yiswp xtaocef hjmr ftqke ogc marspbp dkcuuvy onztk gmhsuym