Winerizing 4.3l volvo penta

[Lou C]

On the Vortec intake, (which has only 8 bolts holding it to the cyl heads, vs 12 on the pre-Vortec) that plug in the front face of the intake would be right below the neck of the intake manifold. Can't really see too well in your pix but your valve covers look like pre-Vortec. And if that's the case no plug on the intake but for sure remove the lower end of the big hose that that connects the thermo neck with the circulation pump housing. It holds a fair amount of water. I am concerned that you did not get much water out of the block drains, a 4.3 block holds at least 2 gallons of water.

http://www.marinemechanic.com/omc/4155.htm
service bulletin about the plug.
http://www.michiganmotorz.com/volvo-penta-vortec-intake-manifold-1996-current-p-8224.html
this is the vortec manifold.
if yours has 12 bolts instead of 8 holding it down then there is no plug there.

 

[zell66]

After fighting it and cussing up a storm I am biting the bullet and paying to have engine winterized. I threw in the towel. What a pain in the ass to winterizes this engine.

 

[Lou C]

The problem is not the engine, its the installation. Those installations are very bad for engine access, I would either NOT buy a boat set up like that, or take it to a fiberglass shop and get them to make all that 'glass round the engine removable. An engine installed like that should have:
Full closed cooling
remote oil filter
both would make winterizing and oil changes easier. The way it is, is awful.

 

[zell66]

i agree. But at $195 its not to big of a pill to swallow. lol

 

[Lou C]

Just wait till you have to change a starter, or anything on the rear of the engine!

 

[zell66]

Thanks Lou LOL