Heater Hose

Topic: Heater Hose

in Forum: C3 Cooling and Heating Systems

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Posted: 3/8/07 10:57am Message 1 of 6

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SilverStreak

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Oceanside, CA - USA

Joined: 11/19/2003

Posts: 191

Vette(s): 1978 Silver Anniversary model. Original L82 engine, 700r4 trans, edelbrock intake, thorly headers, rack&pinion steering, mono rear and front spring, MSD 6A box

Heater Hose

Like most C3s my heater core went belly up. I live in Oceanside Ca so don't have a real need for a heater. I conected the upper and lower hose's with a 3/4" x 5/8 in adapter. My question is will it hurt to remove the hose's and block the intake manifold and water pump hose outlets. I have been told that it is best to let the water circulate through the hose's or the engine will over heat. I have seen pictures of the heater core being remove from the engine compartment on a non A/C 78. Any thoughts.

Eddie

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Heater Hose

Posted: 3/8/07 11:14am Message 2 of 6

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Adams' Apple

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Duncanville, TX - USA

Joined: 11/8/2003

Posts: 20214

Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

You can block the fittings at the pump and intake without any major issues. It does seem to help with warming the engine if the hoses are connected, and coolant circulating thru them, but it will not cause an overheat condition if you just block the fittings off.
The only problem that might occur is if the thermostat got stuck closed on you. With the hoses still on, and connected, it would at least give you some coolant circulation.

Joel Adams
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Heater Hose

Posted: 3/8/07 11:14am Message 3 of 6

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Gunslinger

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Frederick, MD - USA

Joined: 9/8/2003

Posts: 3398

Vette(s): 1969 convertible L71 427/435 4-speed black interior

Let the coolant circulate through the hose from the outlet to the inlet. All you're doing is eliminating the core and control valve from the flow path.

Years ago when in high school when a car I had developed a leaking heater core, that's what a mechanic did while the core was being repaired. It caused absolutely no problems at all.

Heater Hose

Posted: 3/8/07 2:00pm Message 4 of 6

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SilverStreak

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Oceanside, CA - USA

Joined: 11/19/2003

Posts: 191

Vette(s): 1978 Silver Anniversary model. Original L82 engine, 700r4 trans, edelbrock intake, thorly headers, rack&pinion steering, mono rear and front spring, MSD 6A box

Thanks. I think I will keep the hoses conected, I got them braided and they look good, I have them tucked under the passenger fender well.

Eddie

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Heater Hose

Posted: 3/8/07 6:41pm Message 5 of 6

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VTHokie77Vette

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Pennsville, NJ - USA

Joined: 3/13/2002

Posts: 532

Vette(s): 1977 EX-L48

After my heater core went I pulled it out, didn't put a new one back in. Plugged the water pump and intake. Works just fine! So if you did choose to go that route you shouldn't have any problems.

1977 Corvette EX-L48
383 Stroker, Holley MPFI, MSD Ignition, BTO 700R4, VBP Street/Slalom, Hooker Sidepipes with JCL Spiral Baffles, Corbeau A4s w/ Shark Bar and Simpson 5-Points, 17" AR TTII's, Kumho MX's