L98 Heater hose routing
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2nd Gear
Joined: Sep 2005
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L98 Heater hose routing
I have a 1987 Corvette L98 Engine Installed in a 1982 Jeep CJ-7 I Have a heater hose coming out of throttle body and one coming from water pump need to know which one is which and also which one the steam line gets T-ed into Thanks.
Last edited by TrailCJ7; Sep 11, 2005 at 06:07 PM.
Racer
Joined: Feb 2002
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From: Benoni Gauteng
As far as i remember, the TB one normally goes to the intake manifold on one side and to the heater on the other side. The smaller of the hoses from the pump also goes to the heater, but this is going of memory, i could be wrong
Le Mans Master
Joined: Dec 2000
Posts: 7,839
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From: San Diego, Ca
Nice conversion - didn't think anyone did this anymore.
Hose from the Throttle Body is the Heater Core Inlet - bottom. Outlet
- Upper Hose, returns to the Pump.
There should be two Tees in the Outlet. The first, runs a 1/4" line to the intake manifold. The Vette Intake Manifold gaskets are restricted at the rear and this bypass from the Heater Core ensures adequate flow to the rear of the heads. The design supposedly keeps the coolant back there a little longer and takes care of any hot spots. The F body doesn't use this Bypass and if you're using F Body Intake Gaskets (or intake), they don't have the restrictors and the manifold won't have the provision for the hose.
The second Tee is closer to the water pump and directs coolant to the Cooler at the oil filter. I don't think all C4's had this option, but I can't say for sure.
PS: There isn't any steam involved - or if there is, add some anti- freeze to your mix.
Hose from the Throttle Body is the Heater Core Inlet - bottom. Outlet
- Upper Hose, returns to the Pump.
There should be two Tees in the Outlet. The first, runs a 1/4" line to the intake manifold. The Vette Intake Manifold gaskets are restricted at the rear and this bypass from the Heater Core ensures adequate flow to the rear of the heads. The design supposedly keeps the coolant back there a little longer and takes care of any hot spots. The F body doesn't use this Bypass and if you're using F Body Intake Gaskets (or intake), they don't have the restrictors and the manifold won't have the provision for the hose.
The second Tee is closer to the water pump and directs coolant to the Cooler at the oil filter. I don't think all C4's had this option, but I can't say for sure.
PS: There isn't any steam involved - or if there is, add some anti- freeze to your mix.
