Running Lean - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Pontiac When starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made.

Reply
 
 
 
Thread Tools Search this Thread
Old 06-03-2011, 10:25 AM   #11
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

Keep in mind Bill, even though the VE table is used when a MAF fails, it is also used at the moment you floor it. It uses VE to determine the AFR for the air between the valves and the MAF until the air flow from the MAF reaches the valves.
Danthurs is offline   Reply With Quote
Old 06-03-2011, 10:33 AM   #12
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Jun 2011
Posts: 36
Thanks: 0
Thanked 0 Times in 0 Posts
gtpmchn is on a distinguished road
Default

Quote:
Originally Posted by BillBoost37 View Post
GTP: some of the ZZP cores oddly have an EGR hole in them. I have one in hand for a buld I'm working on and it has the hole. Please double check that you have a block off plate under the throttle body for the hole in the LIM.
its definately not blocked with a plate im pretty sure the hole was filled with some kinda paste or if its even blocked at all! but the EGR is disconnected (electrically) but physically its still there

here'* a link with install pics in there, i dont thinks its blocked at all

http://www.cardomain.com/ride/308893...iac-grand-prix
gtpmchn is offline   Reply With Quote
Old 06-03-2011, 11:50 AM   #13
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

That'* the same core I have sitting here. IIRC it'* open.

Take the end off your EGR if you still have it. The part that used to get bolted to the LIM, cut the tube and take it off. Then put some rtv aroudn the LIM hole and put a penny on it. Then bolt that EGR piece to hold the penny. Presto..easy block off plate that looks stockish.

See if that helps.

Meanwhile I'm trying to think of where else you might have an issue that woudl cause you to run lean. Vaccum or battery cable etc.
BillBoost37 is offline   Reply With Quote
Old 06-03-2011, 11:53 AM   #14
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 seal under the supercharger below the snout to the IC plate is VERY narrow. Only way I've ever got this area to seal good is with red RTV. It'* about 1/8" there.
Danthurs is offline   Reply With Quote
Old 06-03-2011, 11:58 AM   #15
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

YOu have a great point there Dan. On that current build, I suggested to the customer that I do what I've done to a couple other LIM'*. Add material.

Name:  IMG_7302.jpg
Views: 1
Size:  93.1 KB

By adding the material and making your own gaskets, then using Permatex 26B, I have never had a vacuum leak or sealing issue of any type. You may have to look close at the picture. The JB Weld blends into the color of the manifold pretty well.
BillBoost37 is offline   Reply With Quote
Old 06-03-2011, 12:01 PM   #16
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

After dealing with ZZfail gaskets I started making my own. I add extra meat on that side, ya, it sticks out a bit, but that helps keep it rigid. Thin layer of RTV top and bottom of gasket, put supercharger in place, snug up bolts a little. then wait a half hour, then torque. Not had a single leak that way.
Danthurs is offline   Reply With Quote
Old 06-03-2011, 12:34 PM   #17
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Jun 2011
Posts: 36
Thanks: 0
Thanked 0 Times in 0 Posts
gtpmchn is on a distinguished road
Default

the car has been running with with egr like that for about 10k miles, but i will def look into that, and as for sealing the SC to the LIM, i did use RTV on both sides of the gasket to seal it out but i will double check that tonight and spray lotsa carb cleaner in there and c if that changes anything.
if i have a vacuum leak, shouldnt that effect my boost? or not really?
gtpmchn is offline   Reply With Quote
Old 06-03-2011, 12:47 PM   #18
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

Depends on the leak. When mine had a leak there MAF cleaner didn't really change the RPM much, but I could see the liquid being sucked in. Also, I could hear it when I shut the engine off.
Danthurs is offline   Reply With Quote
Old 06-03-2011, 12:54 PM   #19
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Jun 2011
Posts: 36
Thanks: 0
Thanked 0 Times in 0 Posts
gtpmchn is on a distinguished road
Default

i know lately there has been a squeeking sound coming from around the SC, could that b it? but i thought it might b the coupler giving out!
gtpmchn is offline   Reply With Quote
Old 06-03-2011, 01:01 PM   #20
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

It would be more of a hiss for a few seconds. A squeak would likely be a pulley going out. Remove the belt and check each one. A coupler going out would sound like rocks. You can test that by removing the belt and moving the pulley back and forth, you will feel the play if there is any.
Danthurs is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
2000 SSEI running lean erin0525 2000-2005 10 02-18-2008 07:55 PM
Running lean help with diagnostic trigga_b 1992-1999 3 10-07-2007 01:41 PM
Bonnie Running Lean PRD2BDF 1992-1999 25 08-01-2006 02:03 PM
UPDATE - Multiple Cylinder Miss/Running Lean/Rough Idle Daron97SSE 1992-1999 7 05-05-2005 01:24 PM
running lean?? 1993 SLE 1992-1999 15 11-26-2004 10:46 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 11:28 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.