3.0L 'nilla milkshake

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mikeinsac2003

Cadet
Joined
Sep 7, 2003
Messages
22
Re: 3.0L 'nilla milkshake

Head was just checked and found to be okay. They fixed the spring issue and resurfaced head(off by .006).<br /><br />They are going to pressure check manifold and riser next but they are short on staff. Owner said it looked like the manifold might be bad as suspected.<br /><br />I will keep you all advised and let you know what prices I am paying as there seems to be a shortfall of this information.
 
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mikeinsac2003

Cadet
Joined
Sep 7, 2003
Messages
22
Re: 3.0L 'nilla milkshake

The verdict: Bad manifold! Riser checked out okay. I will pick up the head, mani and riser tomorrow and advise on net bill.
 
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mikeinsac2003

Cadet
Joined
Sep 7, 2003
Messages
22
Re: 3.0L 'nilla milkshake

Okay, final post unless anyone would like to see pictures of my manifold and what signs they might want to look for.<br /><br />Head magnaflux and resurface - $68<br />Pressure test on manifold and riser - $40<br />Price of new mani assembly OEM(806867A8) - $328<br />I found the mani cheaper online, but once I paid for extra shipping due to weight(54lbs) it wouldn't be much of a difference. Chose to pay a little more to a local shop in case there are any problems.<br /><br />BTW, new OEM mani is sold with end caps, bolts and gaskets. Nobody in town has them in stock, but all are available within a couple of days.<br /><br />Also, www.mercruiserparts.biz is a great site because it gives you assembly diagrams and current part numbers and list prices.<br /><br />Thanks to all of you for your help and input. Great forum!
 
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jaymcjay

Recruit
Joined
Jul 25, 2004
Messages
5
Re: 3.0L 'nilla milkshake

Ok, I've got a 1988 Chris-Craft 205 with the 4.3LX and an Alpha Drive. I seem to be experiencing similar problems as our friend who posted this originally. I just got the boat (cheap since it had milky oil). I changed the oil and took it to the river and ran it (gently) for a few minutes. I drained the oil and it was milky again. So, I pulled the plugs, and found one (#1) was wet. I immeadiatly though...bad head gasket! So, I tore the head off, looked it all over, and put in a new gasket. Well, tonight I took it back to the lake and the same little event happened all over again. I wouldn't mind putting a new motor in this thing if I thought it was the solution to the problem, but I think I'm a decent wrench, and I just have a hard time believing that I screwed up a head gasket job that bad. When I pulled the #1 plug water RUSHED out of the hole...<br />So, do I have a bad exhaust manifold? How do I check it? What type of shop do I take it to? Is this a job for a marina, or a machine shop? Are there rubber diaphragms in there that go bad? Should I replace both?<br />As a note, while I was running it in the lake tonight I noticed that there was quite a bit of gurgling noises comming from the region where the rubber hose clamps to the iron down-tube. I re-tightened the clamps, but it never really went away.<br />Oh, it all seems to run fine and has great oil pressure and compression.<br />Thanks to all that have borne with my longwindedness!
 
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