Head problem st165

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Head problem st165

Postby Dj1412 » Wed Mar 30, 2016 3:30 am

I have an 88 st165 3sgte
Found out my oil leak is not coming from the valve cover but coming from the side of the head
There is a hair line Crack in the aluminum right above the exhaust manifold

Is there any other heads that will bolt up to my block :late model :non turbo: 3sfe: or does it have to be a 1988 3sgte

Or would it be better just finding a whole another motor
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Re: Head problem st165

Postby RedCelicaTRD » Wed Mar 30, 2016 1:46 pm

I assume the crack is on the alternator side of the exhaust manifold?

And if I remember right you can use a regular 3sge head, or a second gen 3sgte head. I don't think the intake manifold will work on a 3sfe or 5sfe head.
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Re: Head problem st165

Postby Dj1412 » Wed Mar 30, 2016 9:21 pm

Thanks for the info is cracking of the head in the head a common issue in that area what causes it
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Re: Head problem st165

Postby ___Scott___ » Thu Mar 31, 2016 3:03 am

It's an all too common problem on the first gen head. It happened on my first ST165 and I replaced the head with one from a 3SGE. The heads are a little different, but it still ran good.

I'm not sure I would do it again though. It's beginning to look like a 4th gen 3sgte swap makes a lot of sense when you compare it to putting money into a 1st gen 3sgte.
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Re: Head problem st165

Postby Camshaft1987 » Thu Mar 31, 2016 11:56 am

If you do go with a 3sge head try and snag the side mount intake with it. Improves intake volume for a little more grunt on the bottom end of your power. Where abouts in WA are you living. Im in Bonney Lake Buckley Sumner area.
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Re: Head problem st165

Postby Dj1412 » Thu Mar 31, 2016 9:27 pm

Work in all over the Seattle area
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Re: Head problem st165

Postby 88gt4DE » Sun Apr 03, 2016 4:02 pm

___Scott___ wrote:It's an all too common problem on the first gen head. It happened on my first ST165 and I replaced the head with one from a 3SGE. The heads are a little different, but it still ran good.

I'm not sure I would do it again though. It's beginning to look like a 4th gen 3sgte swap makes a lot of sense when you compare it to putting money into a 1st gen 3sgte.


+1 on that one and I did it twice. Never again
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Re: Head problem st165

Postby RedCelicaTRD » Mon Apr 04, 2016 4:36 pm

Dj1412 wrote:Thanks for the info is cracking of the head in the head a common issue in that area what causes it


I believe it was caused by the alternator bracket and how it stresses that area. The 2nd gens have a different bracket design and no long have the cracking issue.
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