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Using Dry Joint 2008 4.3 L Manifolds on a "Cold Manifold" system

hystat

hystat

Outstanding Contributor
I have 2008 4.3 Dry Joint manifolds on my 1985 MR185 (229 V6 Chevrolet)

I had to use the old cold manifold style thermostat housing (has to do with alternator mounting) so I a plugged the riser feed port and have just 1 hose to each manifold feeding the bottom.

I see my temp gauge climbing gradually at WOT... past 175...sneaking past 180..so I back off and it cools down again.
The risers are about 160F when I drop off plane and run back and check... hotter than I think they should be with cold plumbing.

I see a 27-864547A02 gasket for "FULL FLOW" that has 2 wide open holes at the riser joint for water flow. The current ones have 1 wide open and 1 restricted.

I guess it is worth a try to use the full flow style.... thoughts?
 
Re: Using Dry Joint 4.3 Manifolds on a "Cold Manifold" system

Are you using a 143 F. thermostat? It can't hurt; more water flow through the exhaust.
 
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