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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 08-21-2004, 08:03 PM   #1
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Default Engine compression test

Anyone know what the compression is for L67 */C should read? My bro has a compresison tester.. and I'd like to see what it should be.. and whats tolerable

This will help me decide in the long run to either build the engine up or swap it out for a series III
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Old 08-21-2004, 09:54 PM   #2
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Don't know off by heart...somewhere around 150 to 165 psi. That'* not maybe the most important thing though, the cylinders should be with 10% of each other.

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Old 08-22-2004, 02:04 AM   #3
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Quote:
Originally Posted by Foghorn
Don't know off by heart...somewhere around 150 to 165 psi. That'* not maybe the most important thing though, the cylinders should be with 10% of each other.

Cheers,
that is very true.. but I just liked to know as I had the car sittin for over a year.. and never started (wasn't stored with me) and I was just wondering if from all the rust and crud that it may have worn off some of the cylinder walls and possibly lost compression on all cylinders. Or having compression leaks around the piston down
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