2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

intake manifold bolt

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Old Jun 13, 2006 | 05:47 PM
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jeff_man's Avatar
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From: Dallas TX
intake manifold bolt

Ok so the housing or hole that the bold in the middle of the upper intake are stripped so the bolt doesn't get tight. i am going tomorrow to a bolt shop tomorrow to get the same bolt but a little longer to see if it will tighten down to hold tell i can rethread the hole. but now my car idles odd and when i start to boost the gauge flickers from one psi tell the other back and forth like a boost and/or vac leak.

SO would the bolt not being tightend down be counseling the problem I'm having?

and anyone know what the dimensions of the bolt is, i think it's 80mm long and a m8 1.25 thread but i'm not to sure.
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Old Jun 14, 2006 | 10:34 AM
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Aaron Cake's Avatar
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That could be causing a vacuum leak which can effect the idle.

It can be fixed with a Helicoil easily, or you can retap for a larger size (less easy).

Yes, it is M8 x 1.25.
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Old Jun 14, 2006 | 04:05 PM
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well ends up i have 90psi in the front and 60 psi in the back so time to park it and start ripping stuff out

Just atlest it was 90-90-90 and 60-60-60 and not 60-0-0 or something and you can hear it when you turn the key, 1 loug wosh and 2 quiter woshes

Last edited by jeff_man; Jun 14, 2006 at 04:07 PM.
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