Heat riser
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I have a 1970 Chevy pick-up, C-10, with a 350 V8. The heat riser valve on the left exhaust manifold is sticking. My question is: what position should the counterweight on the heat riser shaft be to have the valve open, so that the exhaust can flow into both pipes? I am thinking that when the counterweight is down, the valve will be open, because the pipes are hot and no exhaust crossover is needed. Have I got this right? Thanks, Irmajoan.
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jmarkv
Silverado, Sierra & Fullsize Pick-ups
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January 24th, 2012 8:21 PM