getting ready to order zzp mps... - Page 2 - 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 > Pontiac Bonneville > Forced Induction

Forced Induction All questions and problems regarding Superchargers, Turbos, NOS, ZEX, intercoolers, water injection, etc.

LinkBack Thread Tools Search this Thread
Old 03-05-2006, 12:41 PM   #11
Senior Member
True Car Nut
Join Date: May 2003
Location: Holt, MI & Lima, OH
Posts: 3,022
Thanks: 0
Thanked 0 Times in 0 Posts
dbtk2 is on a distinguished road

Originally Posted by 1993 SLE
Originally Posted by harofreak00
what was going on with McGraths problem then?
that is what i thought also

although one mentiones Idler and one mentions tensioner......

and Bill More have changed there belt than ran a different tensioner
With an oversized tensioner you get more belt wrap and therefore more surface area that the belt it touching the pulley, so less chance of slipping. A smaller belt works because it fits tighter, but a larger tensioner works better because it fits tigher AND wraps around the pulley more. Once you go down from a 3.4, then you start going with shorter belts. Assuming the stock supercharger belt is in good shape, an oversized tensioner will work better than a smaller belt.

1990 Maroon Grand Prix STE McLaren 3.1 Intercooled Turbo, 14.695 @ 94.49 on 12psi before cam/heads/etc.
1990 Bright Red Grand Prix McLaren 3.1 Intercooled Turbo, 14.819 @ 92.72, 189whp
1999 Grand Prix GT 9.75:1|K&N|160 tstat|No Ubend/Cat/Res|UD Pulleys|Ported M90/TB/Heads|XPZ|2.55"|Pacesetters|Stage 2 I/C. 12.442 @ 112.78
2000 Blue Bonneville SSEi Supercharged Gutted Airbox|K&N|3.4"|1.9'*|WP Pulley|Custom DHP|180*stat|41932'*|No Cat. 14.681 @ 94.80
2002 Dark Cherry Grand Prix GTP Supercharged & Intercooled
12.084 @ 114.38 w/1.743 60', 315.6whp, Fastest Stock Cam M90 GTP!
NOW XP CAMMED, 340.6whp with XP, stock heads, Gen 3 M90, 11.984 @ 115.84 w/1.750 60'!
Most HP Stock Heads Gen 3 M90 GTP!
2004 Red Monte SS Supercharged K&N|3.4 Pulley|1.9'*|180*stat|41919 plugs|3" dp|No cat/ubend|DHP|Shift Kit. 14.2 @ 98
GOT BOOST??? Friends dont let friends drive stock!
dbtk2 is offline   Reply With Quote
Old 03-05-2006, 04:54 PM   #12
Posts like a V-Tak
Join Date: Nov 2005
Location: The Big "OH"
Posts: 92
Thanks: 0
Thanked 0 Times in 0 Posts
mikey383 is on a distinguished road

I used an oversized tensioner for a week, and when I put it on, the belt was VERY close to rubbing. Within a week, that $30 belt was trashed,slipping off the SC pulley, no ribs, etc. Put stock tensioner pulley back on, went with a smaller belt, and had no problems.

Also, you will need the puller to get the old pulley off, and press the MPS hub back on. Renting it is a much better idea if you are going MPS.
mikey383 is offline   Reply With Quote
Old 03-05-2006, 09:50 PM   #13
Senior Member
Certified GM nut
Join Date: May 2005
Location: Wickliffe, Ohio
Posts: 2,155
Thanks: 0
Thanked 0 Times in 0 Posts
McGrath is on a distinguished road

I think Mac had a severe case of belt stretch
Yeah I had so much more clearance when I had put that belt on. But it I didn't see it strech slowly it did it all very fast.

I say go for the stock size belt and over sized idler pulley for a 3.4. But watch the clearance closely

McGrath is offline   Reply With Quote

Similar Threads
Thread Thread Starter Forum Replies Last Post
Give me some feedback on the ZZP TB before I order merlin Performance, Brainstorming & Tuning 3 04-01-2005 06:18 PM
Pic of new ZZP 3.3 MPS Installed. 2000SilverBullet Performance, Brainstorming & Tuning 31 11-21-2004 10:11 PM
Getting ready for the Drags 2000SilverBullet Performance, Brainstorming & Tuning 4 07-23-2003 08:34 PM
Getting new job.. getting paid, getting mods Wolfedog50 Performance, Brainstorming & Tuning 3 05-08-2003 01:31 PM
Getting ready to buy a Bonnie. problem with the drivers seat CaptainB 1992-1999 6 04-12-2003 02:45 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 01:21 AM.