Exhaust Manifold Temps

[four winns 214]

Engine: Merc 228R #6726322 installed in 1984 Sea Ray 210SRV

Engine temp reads normal. How hot should exhaust manifolds get during cruise operation? Should you be able to lay a hand on them or will they be hot to the touch? Is there any published data for normal temperature range?

 

[Evinrude Boater]

Re: Exhaust Manifold Temps

Mine are hot to touch although recently I thought they used to be cooler. I'm told it's normal, 100-110 degrees at the elbow.

 

[BAproject]

Re: Exhaust Manifold Temps

You should be able to touch them if water flow is adequate.

 

[Philster]

Re: Exhaust Manifold Temps

Barring the use of a gauge: Via the hands, they should be really really warm. If they are hot enough that you can't stand to keep your hand on them... that is too hot.

 

[four winns 214]

Re: Exhaust Manifold Temps

Mine are too hot to lay a hand on and keep it on. A tech at the local Sea Ray shop said it's normal. A buddy with a considerable amount of boat engine experience says it's not, but he doesn't make his living at this. These manifolds are four years old.