Re: Exhaust manifold Heat Riser Question
Posted by Joe Santana On 2017/11/13 18:34:03
Maybe Dave or someone can verify if these images are correct for operation of the heat control valve.
Also a service letter reprint on the manifold heat control valve/heat riser says: The valve sticking in the open position will cause slow engine warm up, excessive spitting and sluggish engine operation when cold. A valve sticking in the closed position will cause overheating, loss of power, hard starting when hot, and may also cause warped or cracked manifolds. Sticking in either position will adversely affect fuel economy.
EDIT I keep looking at this and thinking I have my spring on backwards or something. The manifolds are being planed, but before we put them on the block I'd like to be sure we have this set up correctly.
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Also a service letter reprint on the manifold heat control valve/heat riser says: The valve sticking in the open position will cause slow engine warm up, excessive spitting and sluggish engine operation when cold. A valve sticking in the closed position will cause overheating, loss of power, hard starting when hot, and may also cause warped or cracked manifolds. Sticking in either position will adversely affect fuel economy.
EDIT I keep looking at this and thinking I have my spring on backwards or something. The manifolds are being planed, but before we put them on the block I'd like to be sure we have this set up correctly.
Attach file:
(18.91 KB)
(71.72 KB)
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