Cooling problem Ford 302

[l_boyle]

Okay there ya goes, I would of say.. Pop out all of soft plugs on the both sides of the block, and there more at rear of the block also, and take the pressure washer, blow the gunk out that you see bulding up inside of there..

[travis912]

what do the filp flops do

[san]

On Doug Russell they call it "shutter-water". It's a non return valve that keeps water from getting into engine via exhausts when you for instance rapidly go from high speed to zero.

[Brad D]

I have a Mercrusier 302 - 888 and had issues with overheating 2 seasons ago. I replaced the original log style manifolds this past summer with a universal center riser style. The only thing is the gaskets and restrictor plates that came with the setup didn't have holes to allow gases to escape. Due to weather I was only able to start the boat in the driveway with the hose attached(everything seemed fine). Before i head out on the water to see what is going on with the overheating issue...Do i need to drill little holes to allow steam to get out or is it going to be ok without them? i don't want to add another problem to the overheating issue.

i still need to replace the impeller and check the thermostat.

[gonzo]

Do you have separate hoses for the manifold and the riser?

[Brad D]

I still have the octopus thermostat housing, so i have a hose going into the manifold and one coming out. I also have a hose running into the riser.

[san]

Shouldn't cooling water on center rise manifolds go directly out through risers instead of back to thermostat housing and then out through risers? DO you have the right gaskets?

I would test the boat in water like it is and if it doesn't work out I would look into replacing the gaskets so cooling water run directly from manifolds to risers. With this you would have to replace the octopus thermostat housing with a new one. (Maybe you can plug the 2 inner/under outlets on octopus housing that comes directly from engine. I think this would work as well.)

I would not drill holes in gaskets unless I was sure that I got the wrong parts.

[Brad D]

This setup is exactly the same as the log style only the riser is in the center and not at the end. All the hoses that were on the log style setup attach at the same spots on the new manifold and risers. The only thing is there wasn't a restrictor plate with a little hole included, only 2 types of gaskets. 1 had no holes just a flat plate gasket, the other was a pass thru gasket holes around the edge. Both styles are attached (not the exact same but close)

I installed the plate gasket, i guess the only way to test it is to run the boat in water this summer.

[metalman]

I Had The Same Problem Changed Impellor Few Times Didnt Work Had To Change All Parts In Pump Located In Leg The Most Important Pc Was The Plate On The Back Of The Pump