Good news maybe? another intake topic - Page 2 - 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 02-22-2006, 12:35 PM   #11
Senior Member
True Car Nut
 
Join Date: Oct 2005
Location: Central Florida
Posts: 7,030
Thanks: 0
Thanked 0 Times in 0 Posts
lash is on a distinguished road
Default

Quote:
Originally Posted by jmandeville
Is it possible that a third explanation for changing the lower intake manifold exists?
In my particular case, I had some etching/pitting on the lower intake manifold gasket surfaces which mate to the heads. The corresponding gasket surfaces on the heads are just fine, but then, the heads are made out of cast iron rather than aluminum....

... if I was a mechanic at a Pontiac garage, I donít think Iíd be doing that for a customerí* car. I would think from the Pontiac mechanicí* perspective, if the condition of the lower intake manifold gasket surfaces could jeopardize the long term successful sealing of the head gaskets, then replacement of the Lower Intake Manifold would be required.
You may have a point there, Jack. However, remember that some of us have had such painful (read expensive) experiences at our local dealers that we are somewhat gun shy and tend to wonder about their "good intentions".

<rant>It still bugs me that there is little to no acknowledgement of this obvious problem at the dealership level when it comes to sharing the cost for such a common issue. This should NOT be a "regular maintenence" item unless it is listed in the owner'* manual as such.<rant off>

Sorry to dilcc for the of topic rant...
lash is offline   Reply With Quote
Old 02-22-2006, 12:47 PM   #12
Junior Member
Posts like a V-Tak
 
Join Date: Jan 2006
Posts: 26
Thanks: 0
Thanked 0 Times in 0 Posts
jmandeville is on a distinguished road
Default

Sorry, I wasn't trying to downplay this whole UIM and head gasket problem or
the existence of shaddy mechanics.

The post was meant as a FYI regarding taking care of our beloved Bonnevilles....

To be honest, I have been negligent about flushing and changing coolant in my cars.
For me this has been a wake-up call.

Additionally, I think it'* something else to look closely at when you are putting in new intake manifold gaskets.
On each side of the gasket is a metal surface, and I would think they had better be in good condition.
jmandeville is offline   Reply With Quote
Old 02-22-2006, 12:48 PM   #13
Senior Member
True Car Nut
Thread Starter
 
Join Date: Mar 2005
Posts: 2,688
Thanks: 0
Thanked 0 Times in 0 Posts
dillcc is on a distinguished road
Default

it'* all good guys, i REALLY appreciate the help and discussion.

I thought while I was getting the work done it would make sense to do a flush as well. I think it'* been a while
dillcc is offline   Reply With Quote
Old 02-22-2006, 12:53 PM   #14
Junior Member
 
Join Date: Mar 2003
Location: Purgatory
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
vital49 is on a distinguished road
Default

Flushing your coolant wouldn't have anything to do with the degradation.

To take that a step further, even GM claims that your coolant is good for 150,000 miles.
vital49 is offline   Reply With Quote
Old 02-22-2006, 01:00 PM   #15
Senior Member
True Car Nut
Thread Starter
 
Join Date: Mar 2005
Posts: 2,688
Thanks: 0
Thanked 0 Times in 0 Posts
dillcc is on a distinguished road
Default

Good to know. For some reason I thought i remember something about 5 years... Not sure.
dillcc is offline   Reply With Quote
Old 02-22-2006, 01:06 PM   #16
Senior Member
True Car Nut
 
Join Date: Oct 2005
Location: Central Florida
Posts: 7,030
Thanks: 0
Thanked 0 Times in 0 Posts
lash is on a distinguished road
Default

Quote:
Originally Posted by vital49
Flushing your coolant wouldn't have anything to do with the degradation.

To take that a step further, even GM claims that your coolant is good for 150,000 miles.
This is the Dex-Cool Long-Life coolant you are talking about (for clarity). And I would add that an important factor w/long-life coolant is that you always keep the coolant level up. It is known that LL coolant and air do not make for a good mix and can be corrosive to your engine. Someone correct me if I'm wrong...
lash is offline   Reply With Quote
Old 02-22-2006, 01:19 PM   #17
Junior Member
 
Join Date: Mar 2003
Location: Purgatory
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
vital49 is on a distinguished road
Default

Quote:
Originally Posted by lash
Quote:
Originally Posted by vital49
Flushing your coolant wouldn't have anything to do with the degradation.

To take that a step further, even GM claims that your coolant is good for 150,000 miles.
This is the Dex-Cool Long-Life coolant you are talking about (for clarity). And I would add that an important factor w/long-life coolant is that you always keep the coolant level up. It is known that LL coolant and air do not make for a good mix and can be corrosive to your engine. Someone correct me if I'm wrong...
You hit the nail right on the head.
vital49 is offline   Reply With Quote
Old 02-22-2006, 01:43 PM   #18
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

Lets add to that nail, our overflow tanks are wide open if you look at the caps...Therefore maybe a coolant tank flush and cleaning is in line more often than we think.
BillBoost37 is offline   Reply With Quote
Old 02-22-2006, 01:46 PM   #19
Senior Member
Posts like a Camaro
 
Join Date: Feb 2005
Location: Gilroy, California
Posts: 922
Thanks: 0
Thanked 0 Times in 0 Posts
Bob Dillon is on a distinguished road
Default

Thanks for all the kind words, guys. As an informational item, I do have 2 sleeved uppers sitting on my workbench ready to ship. $35 plus actual shipping cost to your zipcode (priority mail) and then you return your failed upper to me postpaid cheapest way. I'n in no hurry to get them back, but I would appreciate promptness in returning the core when the swap is done.

Mine has 40K on it with no leakage, but the unsleeved ones last that long, so I believe we need more time to be certain. I myself am confident the problem has been solved.

I have one of Bill Buttermore'* reduced diameter stovepipes, but didn't have it before the swap, and my car had the 5/8" one anyway (a late '99 car). I would recommend it for anyone doing this swap whose car has the larger stovepipe.
Bob Dillon is offline   Reply With Quote
Old 02-22-2006, 02:44 PM   #20
Senior Member
True Car Nut
Thread Starter
 
Join Date: Mar 2005
Posts: 2,688
Thanks: 0
Thanked 0 Times in 0 Posts
dillcc is on a distinguished road
Default

On a side note, still sort of related to the overall heat issue, does removing the plastic engine cover along with the underside hood insulation have any effect of better engine heat dissipation? Would there be any side effects on the hood'* paint finish with more heat flow through it? I've just been wondering about it. I'm also planning on a 180 thermostat, at least for the summer.
dillcc is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Bad News, Good News, Great News Purplehazeir Lounge 6 07-01-2010 09:20 PM
Good news and bad news woohhoooo good news SSEimatt93 Performance, Brainstorming & Tuning 55 03-02-2006 02:51 PM
Good news Bad news silver98SE 1992-1999 3 06-22-2005 02:21 PM
Good news and Bad News MOS95B Lounge 5 05-11-2004 11:06 AM
Good news and bad news jachin General GM Chat 5 02-11-2004 07:23 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 04:27 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.