Reversion?
#11
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Didn't Mercruiser have a problem with reversion on the 454 and 502's with stock camshaft and thru-hull exhaust (there is a sevice bulletin on this)? Their recommended solution for this is the exhaust resonators.
Still do not know if these work.
Still do not know if these work.
#12
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Originally Posted by BROWNIE
A tiny exhaust leak can increase the chances of reversion on one side only.
BT
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#13
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Check the stainless tip that bolts to the cast iron riser. There should be a dam welded half way up. Iv' seen these rot out and cause the problem you are decribing