Extreme changes - Page 4 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat
GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat

Go Back   GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat > GM Technical Discussion and Questions > Performance, Brainstorming & Tuning
Search

Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 07-13-2006, 04:32 PM   #31
Senior Member
Certified GM nut
 
Join Date: Jul 2004
Location: New York City
Posts: 1,912
Thanks: 0
Thanked 0 Times in 0 Posts
OLDsman105 is on a distinguished road
Default

Quote:
Originally Posted by willwren
3-bar structure is the INTENSE. It'* hard to tell from my pic the opening diameter difference, but this one is easier:

Click the image to open in full size.

Rough measurements on my screen show the larger thermostat to be a 16.7 percent increase in diameter. That'* better than a 30% increase in area (flow) assuming both thermostats open the same distance.

The car was very confused this morning. Scans were with 92 pump gas, no water injection, 60 ambient temps. First couple runs I got 10-15 of KR at mid-throttle, and 0 of KR at WOT. Very odd. Next two runs started changing to 7 of KR at mid, 10 of KR at WOT, and the last run was 5 at mid (about 7psi) and 11 at WOT. I don't think these numbers really mean anything at this point. My PCM needs some adjustment time.

Thermostat change gave me consistent 175 temps after warmup in 60 ambient air temps on the way to work. It should stay similar, maybe 185 in 100 ambient.
The supercharger caused a Jigowatt overload that scrambled the time circuits activated the flux capacitor and sent you back to 1885.

on topic

How has the car felt (butt dyno) wise? Your temputure was 175 consistent, is that with the fan override on or not?
OLDsman105 is offline   Reply With Quote
Old 07-13-2006, 05:33 PM   #32
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 11
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

Not with fans. But those will still be necessary at the track.

Despite the random freaky KR readings in sporadic load areas, the butt-dyno noticed an increase. This does NOT mean I'm good to go once I have the KR well controlled.

On extremely hot days, this pulley may create more heat, cancelling out any gains in power. That'* what I'm trying to figure out in the next week before WCBF. Am I going to run a 2.0" or 2.2" pulley at Woodburn.
willwren is offline   Reply With Quote
Old 07-13-2006, 08:57 PM   #33
Senior Member
Posts like a Corvette
 
Join Date: Jul 2004
Location: Bolingbrook, IL Location: Clarkston, MI
Posts: 1,256
Thanks: 0
Thanked 0 Times in 0 Posts
llBlazin_llLo is on a distinguished road
Default

When I was running my 2" pulley my car had a hard time with it also (stock PCM). Stock PCM still doesn't like seeing that much boost that is the only reason I have not ran the car at the track with the 2".

What was your peak boost? What was your 02 at? INT? BLM? Spark Advance?
llBlazin_llLo is offline   Reply With Quote
Old 07-13-2006, 09:16 PM   #34
Senior Member
True Car Nut
 
Join Date: May 2003
Location: Lethbridge, Alberta, _______Canada._______ West Coast Bonneville Fest ___05,06,07 Survivor___
Posts: 8,135
Thanks: 0
Thanked 0 Times in 0 Posts
SSEimatt93 is on a distinguished road
Default

Blazin, any of those numbers are almost irrelivent at this point as the PCM is still in learn mode, and will toss out numbers as it tries to find an equilibrim in the system, if it can do so.
Give it a week
SSEimatt93 is offline   Reply With Quote
Old 07-13-2006, 10:49 PM   #35
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 11
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

Matt nailed that one. He'* been there. The JET PCM is another variable.

My numbers are all over the map right now. Things are starting to settle in now, but it'* obvious that I won't be changing pulleys at the track. No 'learn time'. I have to know a week in advance. Tomorrow morning will show more.

I haven't hit peak boost yet. I've held it to no more than 12psi while watching KR and fuel trims. The noise is NOT what I expected. The highest pitch is higher, even at only 12psi, but it'* wierd......there'* a second harmonic now at a slightly lower frequency now. It sounds like two superchargers. One with a 2.2", one with a 2.0". Greyhare and I both heard it at lunch today.

The good news is that the extreme thermostat change was just what the Dr. ordered for a hot day and a 10% underdrive pulley.
willwren is offline   Reply With Quote
Old 07-13-2006, 11:59 PM   #36
Senior Member
True Car Nut
 
Join Date: May 2003
Location: Lethbridge, Alberta, _______Canada._______ West Coast Bonneville Fest ___05,06,07 Survivor___
Posts: 8,135
Thanks: 0
Thanked 0 Times in 0 Posts
SSEimatt93 is on a distinguished road
Default

With your underdrive, you certainly needed the extra cooling control.

Thats whats fun about these cars, telling people..shhhh shes learning!
Ill take er for a spin Bill, and tell u what i figure, i gotta hear the harmonic Symphony of the M62 once again.
SSEimatt93 is offline   Reply With Quote
Old 07-14-2006, 12:51 AM   #37
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 11
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

Quote:
Originally Posted by SSEimatt93
Ill take er for a spin Bill, and tell u what i figure, i gotta hear the harmonic Symphony of the M62 once again.
You get here the weekend I have to decide what pulley to run. That 2.0" might not be on there by the time you guys roll in Sunday.
willwren is offline   Reply With Quote
Old 07-14-2006, 12:53 AM   #38
Senior Member
True Car Nut
 
Join Date: May 2003
Location: Lethbridge, Alberta, _______Canada._______ West Coast Bonneville Fest ___05,06,07 Survivor___
Posts: 8,135
Thanks: 0
Thanked 0 Times in 0 Posts
SSEimatt93 is on a distinguished road
Default

worst case scenario, we pull it sunday night, im always game for an M62 pulley swap lol
SSEimatt93 is offline   Reply With Quote
Old 07-16-2006, 10:36 PM   #39
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 11
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

Running about 96 octane (mix of 92 and 100) in 89F temps, heatsoaked from a 30 minute drive, no water injection:

Click the image to open in full size.
willwren is offline   Reply With Quote
Old 07-17-2006, 12:14 AM   #40
Senior Member
Certified Car Nut
 
Join Date: Mar 2003
Posts: 12,433
Thanks: 0
Thanked 0 Times in 0 Posts
J Wikoff is on a distinguished road
Default

I can't see, is that KR in the double digits?
J Wikoff is offline   Reply With Quote
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Extreme Heat! CmptrNerd Performance, Brainstorming & Tuning 25 09-29-2004 04:05 AM
Fresh pics of this black SSEi (56k extreme hate) OLBlueEyesBonne Your Ride: GM Pictures & Videos 19 04-16-2004 07:11 PM
Good price on dynamat extreme bulk pack if interested . Paulnold Audio (and aftermarket electronics) 1 02-01-2004 11:18 PM
How about stories of extreme frustration... Hailey General GM Chat 8 05-23-2003 02:16 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 On
Pingbacks are On
Refbacks are On



All times are GMT -4. The time now is 10:36 AM.