upper intake gasket - 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.

Closed Thread
 
 
 
Thread Tools Search this Thread
Old 06-22-2004, 01:50 PM   #11
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 mkaake
i used the old intake...

the deal with that, my intake showed ZERO sign of wear from the EGR (how awesome is that??).

Hey, if you're opening up your motor anytime soon, do me a favor - measure how far the egr stovepipe is sticking out over the surface inside the upper. mine was over that edge by about 1/8th of an inch (at least) and the carbon buildup on it turned out to be the reason that it came out with the upper.

i could deff. understand that if a dimension changed, if that sucker wasn't sticking out far enough, it could really make things worse...

matt
My upper intake was the same way. Showed absolutely no signs of degradation. However, my lower gaskets were wasted.

I do find it interesting that your stovepipe came out with the upper intake. Maybe that was a design change, but mine was a very rigid fit into the lower intake.
vital49 is offline  
Old 06-22-2004, 02:55 PM   #12
Senior Member
Posts like a Turbo
 
Join Date: May 2003
Location: B'ham.AL
Posts: 435
Thanks: 0
Thanked 0 Times in 0 Posts
ron350 is on a distinguished road
Default

Hi Matt sounds like the thing to do is wait for the new manifold to come out.

Did you measure the inside daintier of the stovepipe hole in the lower manifold, and the OD of the stovepipe?
ron350 is offline  
Old 06-22-2004, 03:01 PM   #13
Senior Member
Posts like a Camaro
Thread Starter
 
Join Date: Jan 2004
Posts: 1,166
Thanks: 0
Thanked 1 Time in 1 Post
mkaake is on a distinguished road
Default

Quote:
Originally Posted by vital49
Quote:
Originally Posted by mkaake
i used the old intake...

the deal with that, my intake showed ZERO sign of wear from the EGR (how awesome is that??).

Hey, if you're opening up your motor anytime soon, do me a favor - measure how far the egr stovepipe is sticking out over the surface inside the upper. mine was over that edge by about 1/8th of an inch (at least) and the carbon buildup on it turned out to be the reason that it came out with the upper.

i could deff. understand that if a dimension changed, if that sucker wasn't sticking out far enough, it could really make things worse...

matt
My upper intake was the same way. Showed absolutely no signs of degradation. However, my lower gaskets were wasted.

I do find it interesting that your stovepipe came out with the upper intake. Maybe that was a design change, but mine was a very rigid fit into the lower intake.
i too did this because of the lowers...

in any event, i think it was the carbon buildup on the egr stovepipe responsible for the pipe coming out with the upper - i later was able to pop it out, but it had to move up into the upper because of the carbon.

which makes an interesting aside: it wasn't pressed (or at least very hard) into the lower.

i think i may have stumbled onto something else, but won't know for sure for another day or so... but stay tuned - it might be big
mkaake is offline  
Old 06-22-2004, 09:45 PM   #14
Senior Member
Posts like a Camaro
Thread Starter
 
Join Date: Jan 2004
Posts: 1,166
Thanks: 0
Thanked 1 Time in 1 Post
mkaake is on a distinguished road
Default

alright folks, here'* the rundown....

what i know (and feel comfy sharin):

i'm pretty sure the gasket set i've got has been updated for the series III. almost positive. which explains the throttle body gasket that has never been present before. there'* more reasons, but unfortunately, i can't share them :(

what this does mean though, is that the gasket between the series II and III is completely interchangeable. leaving of course, the only obstacle between using the series III intake on the series II is the throttle body.

as it would happen, i found out most of this today, and then on advice from a friend, checked out clubgp... and wouldn't you know it, someone is trying to use an adaptor from zzp performance and see if it'll work in this application.

but again, other than the TB mounting, the series III is almost identical to the series II (at least, in the parts above the lower manifold - there'* some differences leading up to the TB itself, but nothing too major). the internal design is the same - it uses the same two piece setup that we find inside of our composite uppers...

which all means, very cool. if the TB issue can be overcome, the aluminum upper is actually cheaper by a decent amount than the composite - from gmpartsdirect, the price is 97 and change... not too shabby, considering the alternative.

wish i could offer more at this point, but i can't really do that

i'll see if i can get some more pics posted of the process soon so you guys can see what i had coming out, and the new gasket going in.

matt
mkaake is offline  
Old 06-23-2004, 08:32 AM   #15
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

Awesome information! Keep us posted...
vital49 is offline  
Old 06-26-2004, 03:22 PM   #16
Junior Member
 
Join Date: Jun 2004
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
djreed is on a distinguished road
Default Great info...!

This sounds promising, convert my series II intake to a series III

New Series III lower gasket, new series III upper intake , new series III upper intake gasket, and some??? tB adapter & gasket?

This sound correct?
djreed is offline  
Old 06-26-2004, 08:37 PM   #17
Senior Member
Posts like a Turbo
 
Join Date: May 2003
Location: B'ham.AL
Posts: 435
Thanks: 0
Thanked 0 Times in 0 Posts
ron350 is on a distinguished road
Default

I do not know how to post this picture so here is the link!!!!!!!

http://users.adelphia.net/~raguirre/.../IMG_0012a.jpg
ron350 is offline  
Old 06-26-2004, 08:55 PM   #18
Senior Member
True Car Nut
 
Join Date: Nov 2002
Location: Texarkana, Texas
Posts: 6,041
Thanks: 0
Thanked 0 Times in 0 Posts
Damemorder is on a distinguished road
Default

Looks portable, Anyone know if there'* a reason a S3 wouldn't fit on my S1? I'd love to port that alum puppy, it would look better too. Badass if it can be done.
Damemorder is offline  
Old 06-30-2004, 05:59 PM   #19
Senior Member
Posts like a Camaro
Thread Starter
 
Join Date: Jan 2004
Posts: 1,166
Thanks: 0
Thanked 1 Time in 1 Post
mkaake is on a distinguished road
Default

sorry for the delay - it'* been a busy week at work.

anyhew, i'm pretty sure (though i should really check) that the series I and II are incompatible from the get go, so I wouldn't be on it.

2) after a little bit of simple minded thinking, i realized that the gasket kit i got could not have been specifically for the series III... the TB on the series III is completely different (As noted before) than the series II.

this leaves 2 points for now:

1) the TB gasket has been changed. given the low stock of the upper intake manifold, i still find it likely that there is a change coming, since the gasket is so different from the stock.

2) that nice thick TB gasket they provide would be GREAT for making an adaptor plate between the series III upper and the series II TB - i imagine with a nice detailed drawing, a machine shop could fab up something for cheaper than the adaptor that the folks on club GP are using (for mating a series IV super with a LS1 TB, I believe),

i have access to the technical drawings for what is needed, but i'm afraid that would be overstepping my bounds as a gm employee... so i'll see if there'* anything i can do to aid in it, and possibly verify if someone else'* drawings are correct.

for the record, if you look at the series III upper (which i have been quite a bit lately ), you'll notice a little something that'* not present on our uppers around the throttle body. from what i can tell, that'* part of the gas system on the series III - it uses a return-less electronic fuel injection. and it also looks (from what i can tell) that it is merely mounted on the upper, and will not affect it at all if it'* not there.

so this is all pretty good news.

about the only problem i personally have is that the neck of the upper is a little longer, and in my engine compartment, the air intake doesn't leave too much room to begin with... so if i was to do this mod, i would deff. have to go with a custom air intake. it'* not too much longer, but the neck is prolly about an inch - inch and a half longer than the original upper - so be prepared. i'm not familiar enough with the bonnie to know if it'll need a custom air intake, but it'* prolly not a bad idea, if you were going to go to the trouble of doing this anyway.

oh, and again, the aluminum upper is some 97 dollars and change from gmpartsdirect

just something to smile about.

one last factual thingy mabober for today:

from what i'm seeing, the inner runners on the intake are still plastic, despite the aluminum main piece - in all of this, it appears that GM went for the most compatibility possible so it would have as little impact as necessary... which works out very well for us indeed.

and boy would that thing look nice if you could polish it up i've only seen one in person, and i don't remember if it'* a little too 'gritty' on the outside for polish or not, but mannnn would that be pretty...

i'll keep you guys posted if i find out more -

matt
mkaake is offline  
Old 07-08-2004, 06:14 PM   #20
Junior Member
 
Join Date: Jun 2004
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
djreed is on a distinguished road
Default

Stopped by a local dealership on the way home today to see what I could learn. Got part numbers & some more info.

89017554 Revised upper intake gasket with TB gasket, TB gasket was now black in color. $23

12537197 Lower intake gasket, black and light blue in color. $17

89017272 Revised upper intake part number. Note on GM parts direct claims that this is the manifold only, no gaskets. $130

All prices are from gmpartsdirect.com dealer quoted list price mentioned at gmparts direct.
djreed is offline  
 
 
Closed Thread

Related Topics
Thread Thread Starter Forum Replies Last Post
Upper Intake Manifold Gasket Question spit 1992-1999 20 03-05-2007 01:03 PM
Upper Intake Gasket Leaking harrydunn 2000-2005 9 02-08-2006 06:44 AM
L27 Upper Intake Gasket Failure? Hans 1992-1999 6 05-15-2005 11:02 AM
Upper and lower intake gasket a diaster! Spiral 1992-1999 10 05-18-2004 03:28 AM
Cracked upper inake, or bad intake gasket? brminder 1992-1999 2 03-24-2003 07:37 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 12:58 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.