Heartbeat, Being Ordered
Le Mans Master
Joined: Apr 2013
Posts: 5,376
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My understanding is that the Goodyear Gatorback belts don't exist anymore, and have been replaced by the Continental Elite Poly-V Series. Summit also lists that belt, in the new Continental series, although it's not in stock at the moment:
http://www.summitracing.com/int/parts/cel-4060965
http://www.summitracing.com/int/parts/cel-4060965
Le Mans Master
Joined: Apr 2013
Posts: 5,376
Likes: 1,118
Here's a math challenge for you gurus (Andy, Rodney, Carson, etc.): Is there any way to calculate the length belt you would need when you increase/decrease pulley size?
My challenge is going to be figuring out what belt to use when I go with the O/D balancer and the 81mm upper...
My challenge is going to be figuring out what belt to use when I go with the O/D balancer and the 81mm upper...
Last edited by CI GS; Mar 4, 2016 at 06:16 AM.
Thread Starter
Instructor
Joined: Feb 2015
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Took the measure of the blower pulley and it is 96mm end to end. At the same time its part number in Google search is 81mm.
Crank pulley is 7.5 inch.
Belt is 3014mm and very tight. No way that 2450mm will fit.
Am I getting something wrong? ??
Crank pulley is 7.5 inch.
Belt is 3014mm and very tight. No way that 2450mm will fit.
Am I getting something wrong? ??
Last edited by VetteArts; Mar 5, 2016 at 03:01 PM.
Le Mans Master
Joined: Apr 2013
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It should say what size it is.
Can you take a picture of it?
Thread Starter
Instructor
Joined: Feb 2015
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Le Mans Master
Joined: Apr 2013
Posts: 5,376
Likes: 1,118
Here's the 81mm and the 96mm side by side. You can see the where the part numbers are located. You don't have to remove it to see them, just look on the rear lip of the pulley. You may have to rotate it a bit to see the whole number though.
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Thread Starter
Instructor
Joined: Feb 2015
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Done. Mine reads 96mm print unlike what I ordered from Superchargersonline. Will have to get that replaced. At least I know what it is now. Thank you guys.
Last edited by VetteArts; Mar 6, 2016 at 08:54 AM.
Le Mans Master
Joined: Apr 2011
Posts: 7,821
Likes: 412
From: Montreal
St. Jude Donor '13
My understanding is that the Goodyear Gatorback belts don't exist anymore, and have been replaced by the Continental Elite Poly-V Series. Summit also lists that belt, in the new Continental series, although it's not in stock at the moment:
http://www.summitracing.com/int/parts/cel-4060965
http://www.summitracing.com/int/parts/cel-4060965
Race Director
Joined: May 2004
Posts: 16,667
Likes: 1,209
From: Raleigh, NC
St. Jude Donor '15
I just ordered me one. Amazon had the size I need but doesn't look like they have the one you need in stock. I try to keep a used belt in the car just in case I ever have to change it on the side of the road (easier to install)
Le Mans Master
Joined: Apr 2013
Posts: 5,376
Likes: 1,118
I don't think Magnuson ships them with anything other than the 96mm installed on the blower, although they'll sell you any of the smaller pulleys separately. Most likely, it's a liability thing. Those damned lawyers again!
I ordered my kit from SCOL as well, with a smaller pulley and no tune, and when it shipped from Magnuson, it still came with the 96mm installed and the SCT tuner in the box - with no Magnuson tune in it!
Not sure wtf that was all about, because it seems like a waste to me to send a brand new SCT tuner and no tune??!
Then I had to wait like almost 2 months IIRC, while Brian chased Magnuson to get me the smaller pulley (which I had by then changed from an 84 to an 81mm).
Those folks (Magnuson) really don't seem to give two ****** about customer service, but their quality control seems to be top notch. I guess that's better than the other way round though...
I would still order anything I need from them through SCOL, though. Those guys are great!
Last edited by CI GS; Mar 6, 2016 at 02:31 PM.
Burning Brakes
Joined: Oct 2001
Posts: 860
Likes: 40
From: Woodforest
That settles the mystery then. A 96mm normally produces around 6-6.5 psi on a stock cammed LS3, so with your cam, 5.5# is to be expected.:
I don't think Magnuson ships them with anything other than the 96mm installed on the blower, although they'll sell you any of the smaller pulleys separately. Most likely, it's a liability thing. Those damned lawyers again!
I ordered my kit from SCOL as well, with a smaller pulley and no tune, and when it shipped from Magnuson, it still came with the 96mm installed and the SCT tuner in the box - with no Magnuson tune in it!
Not sure wtf that was all about, because it seems like a waste to me to send a brand new SCT tuner and no tune??!
Then I had to wait like almost 2 months IIRC, while Brian chased Magnuson to get me the smaller pulley (which I had by then changed from an 84 to an 81mm).
Those folks (Magnuson) really don't seem to give two ****** about customer service, but their quality control seems to be top notch. I guess that's better than the other way round though...
I would still order anything I need from them through SCOL, though. Those guys are great!
I don't think Magnuson ships them with anything other than the 96mm installed on the blower, although they'll sell you any of the smaller pulleys separately. Most likely, it's a liability thing. Those damned lawyers again!
I ordered my kit from SCOL as well, with a smaller pulley and no tune, and when it shipped from Magnuson, it still came with the 96mm installed and the SCT tuner in the box - with no Magnuson tune in it!
Not sure wtf that was all about, because it seems like a waste to me to send a brand new SCT tuner and no tune??!
Then I had to wait like almost 2 months IIRC, while Brian chased Magnuson to get me the smaller pulley (which I had by then changed from an 84 to an 81mm).
Those folks (Magnuson) really don't seem to give two ****** about customer service, but their quality control seems to be top notch. I guess that's better than the other way round though...
I would still order anything I need from them through SCOL, though. Those guys are great!
Le Mans Master
Joined: Apr 2013
Posts: 5,376
Likes: 1,118
Here's what I'm going to order from SCOL:
http://www.superchargersonline.com/i...ducts_id=11729
That's a ZPE GripTEC 81mm with a special extra grip finish on the pulley.
I'm also going to ask Brian if this tensioner is a heavier duty than the stock one. It looks like it has a heavier spring, but I'm not sure:
http://www.superchargersonline.com/i...ducts_id=11729
That's a ZPE GripTEC 81mm with a special extra grip finish on the pulley.
I'm also going to ask Brian if this tensioner is a heavier duty than the stock one. It looks like it has a heavier spring, but I'm not sure:
Last edited by CI GS; Mar 6, 2016 at 09:43 PM.
Le Mans Master
Joined: Apr 2013
Posts: 5,376
Likes: 1,118
I saw that on a recent thread. Nice looking piece for sure. I've always wondered whether I could use Comp 's billet manually adjustable tensioner (picture below), but it seems that the spring-loaded tensioners is what everyone uses with serpentine belts. The old Procharger setup on my boat used a 10rib serpentine belt, with a single manually adjustable tensioner, and that seemed to work.
Le Mans Master
Joined: Dec 2005
Posts: 6,999
Likes: 1,685
From: Southeast TX
If you've got a bad a$$ short belt that won't stretch much, a manual tensioner will work. I haven't seen any 6 rib belts, eight feet long, that won't stretch under load though. Once they stretch much, it's game over with a fixed tensioner.
Le Mans Master
Joined: Apr 2013
Posts: 5,376
Likes: 1,118
What we need is some steel/Kevlar belted belts!
What do you think or know about the Maggie sprung tensioner? Is it stronger? I think I'll give Brian a shout later and post back with what he says. I have a few other things to ask him about too.
It's really annoying that Magnuson doesn't even post anything on their site about their upgrades and accessories. WTF is up with those folks?