Which non-OEM gaskets on the L67 should I avoid? - 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.

Reply
 
 
 
Thread Tools Search this Thread
Old 05-10-2012, 10:51 PM   #1
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Sep 2005
Location: Tempe, AZ
Posts: 73
Thanks: 0
Thanked 0 Times in 0 Posts
eazhar is on a distinguished road
Default Which non-OEM gaskets on the L67 should I avoid?

So I pretty much have rebuilt the engine with all fel-pro gaskets with the exception of the front and rear main seal and the supercharger gasket. Then I found this youtube video
where the guy says to avoid plastic gaskets for the lower intake manifold because they tend to fail after 60k miles. On that note, which others do you guys recommend I replace? I want to try to avoid taking apart the entire motor again but if I must...

Thanks a lot
eazhar is offline   Reply With Quote
Old 05-10-2012, 11:44 PM   #2
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

The only gaskets that are a problem are the LIM gaskets. Get the aluminum framed gaskets and you will be set.
Danthurs is offline   Reply With Quote
Old 05-11-2012, 07:53 AM   #3
Senior Administrator








Certified Car Nut
 
Mike's Avatar
 
Join Date: Jul 2003
Location: Horseheads, NY
Posts: 15,643
Thanked 997 Times in 774 Posts
Mike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond repute
Default

Yup, what Dan said^
Mike is offline   Reply With Quote
Old 05-11-2012, 10:05 AM   #4
Senior Member
Posts like a 4 Banger
 
Blackarrow98GP's Avatar
 
Join Date: Apr 2012
Posts: 128
Thanks: 0
Thanked 1 Time in 1 Post
Blackarrow98GP is on a distinguished road
Default

You can get the aluminum gaskets (AC Delco Part # 89017816) from the GM dealer, ZZP or Rock Auto.
Blackarrow98GP is offline   Reply With Quote
Old 05-11-2012, 06:52 PM   #5
Senior Member

True Car Nut
 
WilliamE's Avatar
 
Join Date: Jun 2011
Location: VA
Posts: 3,087
Thanked 418 Times in 376 Posts
WilliamE has a reputation beyond reputeWilliamE has a reputation beyond reputeWilliamE has a reputation beyond reputeWilliamE has a reputation beyond reputeWilliamE has a reputation beyond reputeWilliamE has a reputation beyond reputeWilliamE has a reputation beyond reputeWilliamE has a reputation beyond reputeWilliamE has a reputation beyond reputeWilliamE has a reputation beyond reputeWilliamE has a reputation beyond repute
Default

The AC Delcos are great, I went with Fel-PRO'* for mine, you get a few extra things in the kit you already need unless you have it already, like RTV, thermostat gaskets, o-rings for lower part of fuel injectors, also o-rings that fit the coolant elbow, also a MAP sensor tip.

Amazon Amazon

WilliamE is offline   Reply With Quote
Old 05-11-2012, 07:12 PM   #6
Senior Member
Posts like a 4 Banger
 
Blackarrow98GP's Avatar
 
Join Date: Apr 2012
Posts: 128
Thanks: 0
Thanked 1 Time in 1 Post
Blackarrow98GP is on a distinguished road
Default

^^I just bought that kit from Rock Auto for the PA recently, along with a new upper plenum. Can't wait to get those plastic gaskets out of there!
Blackarrow98GP is offline   Reply With Quote
Old 05-11-2012, 07:23 PM   #7
Senior Member

True Car Nut
 
WilliamE's Avatar
 
Join Date: Jun 2011
Location: VA
Posts: 3,087
Thanked 418 Times in 376 Posts
WilliamE has a reputation beyond reputeWilliamE has a reputation beyond reputeWilliamE has a reputation beyond reputeWilliamE has a reputation beyond reputeWilliamE has a reputation beyond reputeWilliamE has a reputation beyond reputeWilliamE has a reputation beyond reputeWilliamE has a reputation beyond reputeWilliamE has a reputation beyond reputeWilliamE has a reputation beyond reputeWilliamE has a reputation beyond repute
Default

Quote:
Originally Posted by Blackarrow98GP View Post
^^I just bought that kit from Rock Auto for the PA recently, along with a new upper plenum. Can't wait to get those plastic gaskets out of there!
Yeah those old nylon 6,6 gaskets were of poor design, you are smart to be replacing them and not risking possible leaking, and or engine hydra-locking in the future, IMO the 3800 II is too nice of a motor to let become ruined by that design flaw.
WilliamE is offline   Reply With Quote
Old 05-11-2012, 08:01 PM   #8
Senior Member
Posts like a 4 Banger
 
Blackarrow98GP's Avatar
 
Join Date: Apr 2012
Posts: 128
Thanks: 0
Thanked 1 Time in 1 Post
Blackarrow98GP is on a distinguished road
Default

I couldn't agree more William, in fact I remember complaining to the GM dealer about them back in '04 when I was replacing them on the GP. They said I was lucky to be getting them in plastic, never mind aluminum. I replied that maybe when GM replaced enough engine bearings (as I was doing on the GP) that maybe they would offer them in aluminum.
Blackarrow98GP is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Which UIM? OEM, Dorman or APN? Barry 1992-1999 15 09-11-2007 03:59 PM
Which LIM gaskets should I buy? Andx0r 1992-1999 11 01-23-2007 02:30 AM
Head gaskets and all intake gaskets Jason C. 1992-1999 10 02-07-2006 12:10 AM
Non Pontiac OEM Radio Question mremer Audio (and aftermarket electronics) 7 01-17-2005 02:28 PM
Want another Bonneville, which ones to avoid? crzydmnd72 General GM Chat 40 01-19-2004 09:45 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 07:57 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.