exhaust manifold bolt oil inside bolt chamber

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DRUMMOND
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Posts: 443
Joined: Thu Oct 20, 2011 11:11 pm
Your car is a: Fiat Spyder 2000 1980 Pininfarina

exhaust manifold bolt oil inside bolt chamber

Postby DRUMMOND » Tue Jul 25, 2017 12:24 am

Anyone know why there would be oil inside this bolt?
the hole behind this bolt goes in about four inches??. the bolt next to it, hole is only about half inch?
no other bolts have oil inside all dry just this one.

Thank you for opinions :D
Image

zachmac
Posts: 1278
Joined: Sun Aug 24, 2008 9:20 am
Your car is a: 1978 Spider [1979 2 ltr engine]
Location: Aiken, SC

Re: exhaust manifold bolt oil inside bolt chamber

Postby zachmac » Tue Jul 25, 2017 6:18 am

I found out when I was rebuilding my engine that a couple of the bolts on both sides, intake and exhaust, communicate into the oil galleries. I had filled the pan with oil and spun the pump with a drill extension to pre-lube engine without the intake or exhaust manifolds on and quickly had oil pouring out onto the floor! I think it was one on the exhaust (maybe second one in form the front?) and I think two on the intake side. You need sealant of some sort on the threads of those studs.
Jeff Klein, Aiken, SC
1980 FI Spider, Veridian with Tan (sold about a year ago), in the market for another project
1989 Spider, sold
2008 Mercedes SL65
2008 S600 Mercedes V12

klweimer
Posts: 550
Joined: Tue Mar 27, 2012 7:45 am
Your car is a: 1982 Spider 2000
Location: Arvada, Colorado

Re: exhaust manifold bolt oil inside bolt chamber

Postby klweimer » Tue Jul 25, 2017 8:03 am

Yep, that's the story. I just put sealant on all of them.
Kirk

DRUMMOND
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Posts: 443
Joined: Thu Oct 20, 2011 11:11 pm
Your car is a: Fiat Spyder 2000 1980 Pininfarina

Re: exhaust manifold bolt oil inside bolt chamber

Postby DRUMMOND » Tue Jul 25, 2017 11:23 pm

Thanks Zachman & Klweimer.

Very odd situation?

I put sealant on all of them


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