Timing gear question - 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.

Thread Tools Search this Thread
Old 10-18-2003, 05:45 AM   #1
Posts like a V-Tak
Thread Starter
Join Date: Jul 2003
Location: Elmira, NY
Posts: 32
Thanks: 0
Thanked 0 Times in 0 Posts
kc2jga is on a distinguished road
Default Timing gear question

I use to own a 1987 Pontiac GA, V-6 3.0. On one very cold day, like -30F, my GA would not warm up on a local trip to the store (12 miles) So after shopping, I figured I would rev the engine to a steady 2500RPM to make it warm up before heading out. Not 30 seconds later, I heard this terrible knocking, and then the engine died. Long story short, timing gear(cam shaft) stripped because plastic got cold. While the engine was still spinning at 2500RPM UNTIMED, pistons started slapping valves, valves started bending pushrods, pushrods started collapsing hyd. lifters. It was total meyhem.
Now, correct me if I am wrong, Buick makes motors for what, almost the whole pontiac line of cars? So, if and when did buick stop using plastic timing gears in their motors? What is the timing gear made out of in the 1995 Pontiac Bonneville 3.8 SE?
Considering that my Bonnie has 169800 miles on it. I don't want another episode of a major breakdown.
Thanks for any help

1995 Bonneville V-6 3.8 SE, 185deg thermostat, everything else is stock.
2002 Dodge Neon Bleh.
kc2jga is offline   Reply With Quote
Old 10-18-2003, 12:14 PM   #2
Senior Member
True Car Nut
Join Date: May 2002
Location: Edmonton, AB Canada
Posts: 2,621
Thanks: 0
Thanked 0 Times in 0 Posts
DeathRat is on a distinguished road

Not quite sure what you're asking here but, I can tell you that most GM gears are metal with Teflon coated teeth. Most people assume the Teflon teeth as a plastic gear when it'* not.
DeathRat is offline   Reply With Quote
Old 10-18-2003, 01:32 PM   #3
Senior Member
True Car Nut
Join Date: Sep 2002
Posts: 3,392
Thanks: 0
Thanked 0 Times in 0 Posts
fuddyduddy121 is on a distinguished road

I've hearrd that GM made improvements in the quality of the timing chain system around 1992. I've heard of timing chains and gears going bad in the late-80'* Bonnevilles.
fuddyduddy121 is offline   Reply With Quote
Old 10-18-2003, 02:25 PM   #4
Senior Member
Posts like a Corvette
Join Date: Aug 2003
Location: Elizabethtown Pennsylvania
Posts: 1,205
Thanks: 0
Thanked 0 Times in 0 Posts
h1081dan is on a distinguished road

Yeah I did a timing job on my 85 GA 3.0. I assume there the same engines. The timing gear in that was plastic. I replaced it with a metal one. The plastic gear felt very light. I was surprised it made it to 100k. That engine also needed a new oil pump after 100,000 miles (Replaced the timing chain and gears at this time) and needed the crankshaft bearings replaced at about 120,000 miles. Front exhaust manifold cracked at 75k ,water pump at 90k. The only think that didn't need any work done at all was the transmission.
h1081dan is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Magnet on the cam timing gear RVC Buick 4 02-17-2012 09:03 AM
How do I set a timing gear for a 95 Bonneville 3.8 ttesso 1992-1999 5 07-03-2007 09:27 AM
FYI if you lose 4th gear / no fourth gear / no 4th gear caminated2k 2000-2005 6 07-24-2005 11:26 PM
Timing chain question kennyz 1992-1999 5 04-11-2004 11:42 PM
Timing Belt Question bonnie94ssei 1992-1999 37 05-29-2003 09:16 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 11:45 PM.

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.