Glowing Exhaust Manifolds
Hello, I've read a lot of posts here over the past 4 months and so I thought I'd chime in for some possible RVer insight. I drive a 34' Winnebago Elante year 1992 with a 7.4L Chevy. Five months ago I ...
Forum Discussion
I have a 96 GBM MH with a 454 TBI and when I bought it it ran very hot. Replaced leaking exhaust manifold gaskets. 2 years later manifold themselves cracked. Replaced with Thorley headers. Prior to installing headers I created an air dam to force air through radiator and added air ducts to to each side of the manifolds to cool the exhausts. This did little to help and may have caused the manifolds to crack by rain water entering ducts. Headers,FF muffler,CAI made a big difference in reducing the temps. Also don't neglect simple things like radiator,fan clutch and thermostat not opening up all the way. The radiator can be checked with an IR gun, from top to bottom, cold areas would indicate clogging. Look for a delta T of 50 degrees from top to bottom. Does your fan clutch come one with a loud roar when climbing a hill on a hot day? What is your timing set at?
