The SSExi project v3.0 - Page 6 - 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 04-30-2011, 01:45 PM   #51
Senior Member
Certified GM nut
 
SignOfZeta's Avatar
 
Join Date: Mar 2005
Location: New Milford, CT
Posts: 2,284
Thanked 16 Times in 13 Posts
SignOfZeta has a spectacular aura aboutSignOfZeta has a spectacular aura about
Default

She lives, and with some very nice oil pressure!

You didn't change computers (I think), so why all the re-tuning? Is the L26 short block that much different?
SignOfZeta is offline   Reply With Quote
Old 04-30-2011, 01:51 PM   #52
Retired Senior Admin

Expert Gearhead
Thread Starter
 
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

Same PCM. however, the L26 short block is 9.5:1 compression, the L67 is 8.5:1 compression. So I dialed the boost back a good 3psi, then pulled 5* over all. By my math that should be close. But being a whole different set up I need to take the tune slow.

I'm starting to think someone doesn't want me to finish this before the meet. Because I was in the ER this morning I won't be working on the car. So I'll have to wait until Thursday when I have off work again.
Danthurs is offline   Reply With Quote
Old 04-30-2011, 01:53 PM   #53
Senior Member
Certified GM nut
 
SignOfZeta's Avatar
 
Join Date: Mar 2005
Location: New Milford, CT
Posts: 2,284
Thanked 16 Times in 13 Posts
SignOfZeta has a spectacular aura aboutSignOfZeta has a spectacular aura about
Default

Quote:
Originally Posted by Danthurs View Post
Same PCM. however, the L26 short block is 9.5:1 compression, the L67 is 8.5:1 compression. So I dialed the boost back a good 3psi, then pulled 5* over all. By my math that should be close. But being a whole different set up I need to take the tune slow.
That'* right. I always get my Series III L-numbers confused. But hey, more power to you -- literally.
SignOfZeta is offline   Reply With Quote
Old 04-30-2011, 01:57 PM   #54
Retired Senior Admin

Expert Gearhead
Thread Starter
 
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

Can't wait to take her out. Not going to be any time soon though.
Danthurs is offline   Reply With Quote
Old 05-01-2011, 03:18 AM   #55
Senior Member
True Car Nut
 
SAMzGXP's Avatar
 
Join Date: Mar 2009
Location: Fort crack homie
Posts: 2,894
Thanks: 0
Thanked 0 Times in 0 Posts
SAMzGXP is on a distinguished road
Default

Quote:
Originally Posted by Danthurs View Post
Same PCM. however, the L26 short block is 9.5:1 compression, the L67 is 8.5:1 compression. So I dialed the boost back a good 3psi, then pulled 5* over all. By my math that should be close. But being a whole different set up I need to take the tune slow.

I'm starting to think someone doesn't want me to finish this before the meet. Because I was in the ER this morning I won't be working on the car. So I'll have to wait until Thursday when I have off work again.

since you know what you're talking about, i have a question for you
let me get something straight, the higher the compression the more power right? no?
now L36 and L26 both came with 9.5:1. L67 and L32 both came with 8.5:1 ?

if i am correct above, then why */C engine have lower compression ratio than N/A engines?
lets say if GM kept the same ratio on the */C engines, that means more HP? but possibly pistons might pop?
SAMzGXP is offline   Reply With Quote
Old 05-01-2011, 08:04 AM   #56
Retired Senior Admin

Expert Gearhead
Thread Starter
 
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

Your numbers are correct, but I have no idea why they did it that way. Only thing I can think of is making a safe engine for the average driver.
Danthurs is offline   Reply With Quote
Old 05-01-2011, 12:36 PM   #57
Senior Member
Certified GM nut
 
wakefieldl's Avatar
 
Join Date: Dec 2005
Location: dekalb illinois
Posts: 1,916
Thanks: 0
Thanked 0 Times in 0 Posts
wakefieldl is on a distinguished road
Default

damn..i wish i could make it next weekend, but with mothers day, my moms birthday and my lack of funds it just aint gonna happen

looks good! i wanna see it smoke em again..last time it did pretty good..i betcha it does better this go round
wakefieldl is offline   Reply With Quote
Old 05-01-2011, 04:02 PM   #58
Senior Member
True Car Nut
 
SAMzGXP's Avatar
 
Join Date: Mar 2009
Location: Fort crack homie
Posts: 2,894
Thanks: 0
Thanked 0 Times in 0 Posts
SAMzGXP is on a distinguished road
Default

Quote:
Originally Posted by Danthurs View Post
Your numbers are correct, but I have no idea why they did it that way. Only thing I can think of is making a safe engine for the average driver.
quite possible.

so you're using the L26 for more power?
SAMzGXP is offline   Reply With Quote
Old 05-01-2011, 04:10 PM   #59
Retired Senior Admin

Expert Gearhead
Thread Starter
 
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

Well, ya. More power.
Danthurs is offline   Reply With Quote
Old 05-01-2011, 06:10 PM   #60
Senior Member
Certified GM nut
 
SignOfZeta's Avatar
 
Join Date: Mar 2005
Location: New Milford, CT
Posts: 2,284
Thanked 16 Times in 13 Posts
SignOfZeta has a spectacular aura aboutSignOfZeta has a spectacular aura about
Default

You're right, Sam. If I remember correctly, the supercharged engine uses shorter but stronger pistons and connecting rods than the NA engine does. Since the 3800 seems to blow pistons before head gaskets, GM probably decided that the SC engine needed a little more protection.

Although, what would my UIM and I know about boost?
SignOfZeta is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
SSExi lives Danthurs Your Ride: GM Pictures & Videos 26 07-11-2011 12:01 PM
The SSExi project v3.5 Danthurs 1992-1999 61 05-27-2011 03:18 PM
Another year of SSExi Danthurs Your Ride: GM Pictures & Videos 14 08-29-2010 01:26 AM
First photo shoot of 2010 for SSExi Danthurs Your Ride: GM Pictures & Videos 17 04-12-2010 03:19 PM
A year of SSExi Danthurs Your Ride: GM Pictures & Videos 15 12-07-2009 11:25 AM


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 01:40 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.