exhaust manifold temp
 

Anyone have an idea how hot they get?

Re: exhaust manifold temp
 

Stock merc's run about the same as engine temp maybe a little higher it is controled by the size of the bypass holes between the manifold and riser. Ed
the bypass holes are actually in the gasket.

Re: exhaust manifold temp
 

They're Stainless Marine not the stock.

Re: exhaust manifold temp
 

That makes a difference how are they plumbed? Ed

Re: exhaust manifold temp
 

Hey Ed, thanks for the response. Water out of the therm housing to the lower manifold inlet, through manifold, out top of manifold though a hose to the (dry) pipes. The water doesn't go through the manifold to the pipes directly via a bypass like the stock.