How often do gaskets and timing chains go on these engines ? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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 07-16-2006, 02:44 AM   #1
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Default How often do gaskets and timing chains go on these engines ?

Just wondering what everyones experience'* are with the */C Bonne engines.

How solid are these engines, head gaskets etc. ? Anyone have any problems with the Head gasket leaking ?
When should the timing chain be replaced ? How many Km'* or Miles ? How bad is the wear due to the */C factor ?

Thanks,

Dutch
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Old 07-16-2006, 02:57 AM   #2
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Dont worry about the engine, just maintiain it, the LG2 and LG3 3.8L'* had problems with timing chains and such, but that was pre 1989, no problems now, the L67 is a very well built, strong engine that will take alot of HP, as in, whatever the SC can produce for it, Headgaskets? Thats a rare item to go on these cars, cast iron block, cast iron heads, no heat dissipation differential between the two, less "flex" less wear on the headgaskets themselves..the engine shouldnt give u any grief..unless..you run it with coolant in it.
As seen in your other post, you have your SC off..you should buy a LIM gsk set and do those, them are the more popular ones to leak, as your LIM is aluminum.
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Old 07-16-2006, 03:01 AM   #3
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Thanks for the tip, I will


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Old 07-16-2006, 03:11 AM   #4
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No problem. Might as well get her done right the first time eh?
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Old 07-16-2006, 03:17 AM   #5
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LIM gasket has failed twice on my car already. It also caused engine failure on my last ssei.
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Old 07-16-2006, 03:20 AM   #6
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Ahh, a man with experience in the failed engine category..yeah glycol will eat your main bearings like lunch.
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Old 07-16-2006, 11:12 AM   #7
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LIM gaskets on the Series 1 L67 and 92-94 L27 are usually getting tired around 100k, which is a longer life than the Series 2 typically. The timing chain has a tensioner, so it won't jump time or totally fail until perhaps long after 200-300k. I've never seen one fail here.
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Old 07-16-2006, 02:28 PM   #8
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Ok thanks for the tips

I'm going to replace the LIM gasket while I'm at it & possibly the Timing Chain as I have no clue what the previous owners did to maintain this car, other than beat the crap out of it.

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Dutch
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