Overheating Problems!!???!!
I run a factory stock in 100 lap enduro races. Metric monte with a 355 SBC. I'm having big problems cooling the engine properly!! We only race every 3 weeks and just had a race this past weekend. The air temp was in the low 70s and my car was running at 230F! I had the same problem last year and really want it fixed.
I screwed up a little while building my engine (rookie). I put factory rebuild pistons in and didn't deck the block so the pistons are 0.020" down in the hole more than they should be. Could this be my problem? I don't have the time or money to build a new engine so please don't recommend I tear down my engine. I'm going to try to get a spare and then replace it over this winter. It has lower compression 72cc heads on it and flat top hyper pistons. I have some double humps bur I hear this will make my problem worse.
I run a rochester Q-jet that was brand new last year. The car starts and idles great but I didn't really tune the carb much at all. how do I do this? Will this help my overheating? It bogs for a quick second when the secondaries kick in but that seems to be a separate issue. Can this be solved with tuning the carb or does it sound like an accelerator pump issue?
My cooling system consists of a GM 3 row radiator (must use factory radiator) 6 blade 17" fan, 3-4" from rad, stock monte shroud. I can probably squeeze a 18" or maybe even a 19" fan in there. Should I try that? What fan should I buy?
Also, I have a crappy stock lower radiator hose without a wire in it. I have a proform high flow water pump with a 180F t-stat with 2 holes in it. Anything I should do differently there?
Any help will be greatly appreciated!!