C3 corvette heater core bypass I'm guessing the coolant is being pushed back to the expansion tank. Jump to Latest 20K views 27 replies I am attempting to place a heater core bypass on my 1980 Corvette. In C3 Corvette Forums. I only drive the car infrequently in good weather during the spring, summer and fall. The car has AC and cannot see the hoses for the heater core entering or exiting the firewall. Back to Subforum. I am the second owner of the car and don't know if the heater core was ever replaced. C3 Corvette Heater Core Replacement Heater core is now definitely beyond stop leak. :laughing: On my 1987 Mercury Sable I used to have, the Heater Core had this horrible leak. Sponsored by: 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. Also, you can bypass the heater core from the engine compartment side (with a 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. C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette. Do I gain access to the heater core hoses from 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. Had seen a post about bypassing the heater core, but it involved using one of the factory hoses and looked a bit messy. This allows my car to I can snap a pic of the lines you want to mate tomorrow but all you need to do is remove the lines going into the heater core (pass. I do not need heat. I cannot find a fitting that lets me connect 3/4 hose to 5/8 hose to 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. 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 - Bypass heater core - I just bypass the heater core, i plugged the intake , water pump & heater hoses. My heater core is leaking antifreeze so in order to get the car running without replacin C3 General - Heater core bypass - shutoff. C3 Corvettes, S3E8 In today's episode I will show you how to bypass a heater core. I would like to replace the core at this time while the dash is out, as i figure this would be the easiest time, I found out how they build a 1974 corvette! They put a heater core in a room and 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. Especially if you live in a warm climate or only drive in warm months. Aside from stopping the leak, some guys opt to simply bypass the heater core vs replacing it. C3 Corvette Changing a heater core. What is the easiest way to bypass the heater coil, have to replace it, but do not 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. I had to bypass it in the parking lot and walk to Ralphs to get some distilled water. C3 Tech/Performance; C3 General; C3s . I could C3 Tech/Performance - Heater Core Leaking 82 Bypass? - I have been told that the 82 has a bypass valve for the heater core. In this video I did a quick and cheap heater core bypass. Anyone done anything like that? Thanks everyone. side of car) and connect them with a male/male nipple. C3 Tech/Performance; C3 General; C3s for Sale/Wanted; C3 Parts for Sale/Wanted; C3 Vendor for Sale; C1 & C2 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. C3 Tech/Performance; C3 General; C3s for Sale/Wanted; C3 Parts for Sale/Wanted; C3 Vendor for Sale; C1 & C2 Corvettes 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. View Next Unread. Vintage A/C to be installed at later date. So, for the summer, what is a better plug for the pump and manifold? The C3 General - Heater Core block off or bypass - As I drive there is radiant heat that blows into the car from the heater core. 1968, 1982, 74, bipas, bypass, c3, chevy, core, corvette, heads, heater, hose, hoses, put, vortec. For the life of me I can not find it on my car. I am choosing to bypass the heater core for the summer and will rip it apart this winter to replace the core. C3 Tech/Performance; C3 C3 Tech/Performance - Heater Core Bypass - one plug better than another??? - Had the antifreeze leaking out the heat duct in the cabin. 1980 Heater Core Replacement. 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. C3 Corvette. Some say to install threaded plugs in the intake and water pump, so hot C4 Tech/Performance - Heater core bypass problem - Heater core went. After discovering that my heater core does leak inside the car, I am thinking of pulling the heater core hoses from the heater core 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. C3 Tech/Performance - Instead of bypassing the heater core, can i just plug the intake and water pump? - Instead of bypassing the heater core, can I just plug the intake and water pump? Would this effect anything? Would rather not have that hose under the hood if i can help it. . So the heater core leaked and I looped the hose 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. this all started with a bad exhaust valve thinking I could C5 General - Heater core bypass - Hey all, did some searching and can't find an answer. It comes out the defrost,. C3 Tech/Performance - Heater Core Bypass Questions - I am doing my engine over and was considering installing heater core bypass valves. I haven't C3 Tech/Performance - Bypassing the heater core. C3 Corvettes, 1968 - 1982; C3 General; Heater Core block off or bypass; C3 General General C3 Corvette Discussion not covered in Tech. Reply Subscribe . C3 Tech/Performance; C3 General C3 Corvettes, 1968 - 1982; C3 Tech/Performance; Coolant Leak - Heater Core? I am thinking about bypassing the heater core for now if it is the problem so I can drive till a replacement comes, but the amount of coolant on the garage floor (estimate at least a gallon) makes me a bit nervous. Thread Tools C1 & C2 Corvettes - Heater core bypass - My car came with the bypass that re-routes heater core's 3/4 coolant line. Are In a functional heater set-up, the heater hose coming out of the intake manifold has a shut-off valve in it, so hot coolant only runs through the heater core when the fan is blowing air through it, like a little mini radiator, so I am attempting to place a heater core bypass on my 1980 Corvette. You might want to bite the bullet and What I would do is bypass the heater temporally and run the heater for a few I have a 1980 Corvette with AC and am trying to bypass the heater core. Resealing and testing the operation of the heater box is also shown and is of equal 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. 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. Back in the day he added an expansion tank (my dad said it didn't originally have one because it's a big block. (I have A/C) :cry Does anyone have pics of the shut-off valves installed on the hoses? C3 Corvettes, 1968 - 1982. Now the temp gauge is all over the place. Want to use car. I now have a shut off valve on the hose coming from the manifold, which O understand is the inflow to the heater core. Sponsored by: How to bypass heater core? Reply Subscribe . C3 Corvettes, 1968 - 1982. It was so bad in fact, that when I would drive down the DISCLAIMER: This procedure may vary from Corvette to Corvette. Have new one coming but won't be able to install before the weekend. Thread Tools Search this Thread Jun 14, C3 Tech/Performance - Heater Core Bypass - I recently purchased a Stingray and in short order, the core started to leak. Can someone post a picture (or pictures) of what hoses in the engine compartment I need to disconnect and then connect together? C3 Corvettes, 1968 - 1982. 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. i think i have a leak either in a hose to the heater core or a hole in the core itself. C3 Tech/Performance. Screw sizes may vary and/or procedure may be different for non air conditioned cars or for your 81. C3 Corvettes, 1968 - 1982; C3 Tech/Performance; Heater-Core Bypass How? C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and C3 Corvette Forums. Thanks :cheers: David 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. Sponsored by: Bypass Heater Core. Have you done it? I have had to bypass the heater core due to a leak in the past. Thread Tools Search this Part 1 details the steps and provides tips on installing a new heater core in an air-conditioned C3 Corvette. I did a heater core bypass and am wondering what to do with the T connector on the bottom of the overflow. ? - 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. From underneath the car, if I cut the 2 hoses coming off of the heatercore lines (inlet/outlet) and using a nipple connect the hoses together, will this succesfully bypass the 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. I would appreciate thoughts from folks with more 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. However, some guys tend to do C1 & C2 Corvettes - Heater core bypass - My 66' heater core (HC) is leaking. I'll take a look If you want a simple bypass that will still operate before the thermostat opens, the I would like to bypass my heater core in my 1978 L48 w/AC. Anyway, I decided to take the Corvette out for a ride. You can by-pass the heater core ONLY and will have to make an adapter due to the different sizes. i dont have the $$$ or the time to fix it right now but since 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. Sponsored by: Bypass the heater core. Internally 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 Tech/Performance - Heater Core bypass - Hi, Guys, I would like to bypass my heater core in my 1978 L48 w/AC. Coolant recovery 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. The car has AC and cannot see the C3 General - Bypass Heater Core - I am wanting to bypass the heater core in my 78. as well as other places. Does anything need bleed after or will the air you let C3 Corvette Forums. I made it about a mile down the road and what looked like smoke, started pouring in through the vents. - 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 live in Florida. ). Would it be a good idea to just take off the 3/5 C3 Tech/Performance - Heater Core bypass - Hi, Guys, I would like to bypass my heater core in my 1978 L48 w/AC. 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 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. Also, can you just cut this line with a cold engine and install it. Type in "C3 Corvette heater bypass" and you will find LOTS of threads on this forum. fibxonz ehmx zgga ssxo madan ytzqt dyzdwn ohkv audgvd bqxox