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1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 03-08-2006, 03:33 PM   #11
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Quote:
Originally Posted by Hans
the uims dont fail the gaskets do

My gasket is trashed and needs to be replaced- coolant is leaking out about 1/2 gallon every few months) but It is too cold outside to rip everything apart (well mainly getting the TB off is the hard part on the l27s)
We need to be careful to be specific, in that you are talking about the S1 or L27 when you say that the UIM'* don't fail. Because they certainly DO fail on S2 3800'* there is an actual degradation of the plastic on the UIM, caused by the excessive EGR heat, that causes UIM AND gasket failure.
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Old 03-08-2006, 03:47 PM   #12
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Quote:
Originally Posted by Hans
the uims dont fail the gaskets do

My gasket is trashed and needs to be replaced- coolant is leaking out about 1/2 gallon every few months) but It is too cold outside to rip everything apart (well mainly getting the TB off is the hard part on the l27s)
We need to be careful to be specific, in that you are talking about the S1 or L27 when you say that the UIM'* don't fail. Because they certainly DO fail on S2 3800'* there is an actual degradation of the plastic on the UIM, caused by the excessive EGR heat, that causes UIM AND gasket failure.


This thread is about a guy with a 93, last time I checked they did not have series II in 93'*. This thread has nothing to do with the plenum design in the 95+ S2 motors.
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Old 03-08-2006, 03:47 PM   #13
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Quote:
Originally Posted by Hans
the uims dont fail the gaskets do

My gasket is trashed and needs to be replaced- coolant is leaking out about 1/2 gallon every few months) but It is too cold outside to rip everything apart (well mainly getting the TB off is the hard part on the l27s)
But a set of swivel sockets from sears. Pat nearly fell over at how quick it can be.
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