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Old 12-04-2012, 03:41 PM   #1
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Belt slip with 9.1" lower pulley zl1

any way to counteract this? under hard pulls in 4th and 5th around 4500-5k rpm im getting some belt slip. anyone have any idea's on a solution? belt isnt to loose either its the correct size.
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Old 12-05-2012, 07:36 PM   #2
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Sure it's belt slip. Has the boost control in the tune been upped to allow more boost without dumping it at 192 kPa?
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Old 12-05-2012, 09:23 PM   #3
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Sure it's belt slip. Has the boost control in the tune been upped to allow more boost without dumping it at 192 kPa?
it has not its stock tune, i havent heard of anyone else running into that issue yet though so i didnt even consider it. i was just out driving though and it was holding 11-12 psi fine at 1/2 and 3/4 throttle. but when i floored it seemed like it slipped. it could very well be dumping it and rebuilding it though. whats the stock boost cut on these?
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Old 12-05-2012, 09:48 PM   #4
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Sure it's belt slip. Has the boost control in the tune been upped to allow more boost without dumping it at 192 kPa?
Isn't that like 26 psi or so? With tha pulley his peak boost would be 11.5.

I think 11.5 psi might be pushing it on stock tune though. Ted was running 97 octane at 10.5 psi.

Do you have a datalog? Your positive it is not knock retard?
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Old 12-05-2012, 10:34 PM   #5
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Isn't that like 26 psi or so? With tha pulley his peak boost would be 11.5.

I think 11.5 psi might be pushing it on stock tune though. Ted was running 97 octane at 10.5 psi.

Do you have a datalog? Your positive it is not knock retard?
don't have a datalog. and i bought it from ted and he said the 9.1 would be fine with 97 octane, im mixed to 100 to be safe
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Old 12-06-2012, 12:23 AM   #6
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don't have a datalog. and i bought it from ted and he said the 9.1 would be fine with 97 octane, im mixed to 100 to be safe
I thought you might have problems with the 9.1 as that's about 14% OD. I think you would be better off with the 8.86" which is 10% OD. All of Teds test were with the 10% OD pulley.
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Old 12-06-2012, 12:38 AM   #7
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I thought you might have problems with the 9.1 as that's about 14% OD. I think you would be better off with the 8.86" which is 10% OD. All of Teds test were with the 10% OD pulley.
I wanted the 10% but there was a mix up when I ordered my set up. May just go ahead and order the 8.6 ring aswell it's only 130 and then the belt for 50. Need to log this on the Dyno and narrow the issue down first
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Old 12-06-2012, 12:40 AM   #8
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I wanted the 10% but there was a mix up when I ordered my set up. May just go ahead and order the 8.6 ring aswell it's only 130 and then the belt for 50. Need to log this on the Dyno and narrow the issue down first
Does Metco not have an 8.86"?
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Old 12-06-2012, 12:50 AM   #9
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Does Metco not have an 8.86"?
they have an 8.6" ring
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Old 12-06-2012, 02:00 AM   #10
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they have an 8.6" ring
Gotcha. So that would be 7.5% OD.
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Old 12-06-2012, 02:07 AM   #11
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Isn't that like 26 psi or so? With tha pulley his peak boost would be 11.5.

I think 11.5 psi might be pushing it on stock tune though. Ted was running 97 octane at 10.5 psi.

Do you have a datalog? Your positive it is not knock retard?
Actually, Ted was running close to 12psi with the 10% OD pulley, Roto-Fab intake, and Torco at 97 octane. He mentioned 10.5psi was all the stock tune could handle WITHOUT Torco to boost octane.
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Old 12-06-2012, 08:51 AM   #12
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I bet the way you described putting on the belt with help from other people that the belt is actually too short and the tensioner isn't doing its job. You should be able to push the belt onto one of the smooth idlers then release and let the tensioner take up the slack. Try a belt that is one size longer and I bet it fixes your issue.
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Old 12-06-2012, 11:39 AM   #13
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Actually, Ted was running close to 12psi with the 10% OD pulley, Roto-Fab intake, and Torco at 97 octane. He mentioned 10.5psi was all the stock tune could handle WITHOUT Torco to boost octane.
he has the rotofab as well though so he is pulled to 11.5 but most likely running 12.5 or so.

I could be wrong he is running 100 octane but it is another varible that was not tested originally.

I would double check the belt it should slip on and then be tentioned but I would also want to see 100% that I don't have knock retard.

a dyno pull even would just show whats going on.
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Old 12-06-2012, 11:55 AM   #14
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he has the rotofab as well though so he is pulled to 11.5 but most likely running 12.5 or so.

I could be wrong he is running 100 octane but it is another varible that was not tested originally.

I would double check the belt it should slip on and then be tentioned but I would also want to see 100% that I don't have knock retard.

a dyno pull even would just show whats going on.
yea i was suppose to run it last night but my friend had to run to pick some stuff up so we werent able to get it on his dyno. going to run it next week and see what the issue is. the belt did seem to tight as the tensioner is maxed out on it just to get it on
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Old 12-06-2012, 12:37 PM   #15
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Old 12-09-2012, 05:57 PM   #16
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hmm i wonder if this has something to do with it. it says on the metco site that use of the 9.1 ring requires use of a smaller idler pulley. could be the contributing to my issue possibly? (currently it has clearence but is very tight)

http://www.metcomotorsports.com/prod...ankPulleyRings
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Old 12-09-2012, 08:24 PM   #17
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hmm i wonder if this has something to do with it. it says on the metco site that use of the 9.1 ring requires use of a smaller idler pulley. could be the contributing to my issue possibly? (currently it has clearence but is very tight)

http://www.metcomotorsports.com/prod...ankPulleyRings
Yeah...that is a good bet. At the very least get a 50mm lower idler for the stock bracket. I have a Lingenfelter relocation bracket and 76mm lower idler. Lingenfelter doesn't rx the 50mm idler. http://www.lingenfelter.com/mm5/merc...gory_Code=C412
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Old 12-09-2012, 08:25 PM   #18
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Yeah...that is a good bet. At the very least get a 50mm lower idler for the stock bracket. I have a Lingenfelter relocation bracket and 76mm lower idler. Lingenfelter doesn't rx the 50mm idler. http://www.lingenfelter.com/mm5/merc...gory_Code=C412
may just get the 8.6 ring and leave it be for now XD
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Old 12-09-2012, 08:35 PM   #19
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hmm i wonder if this has something to do with it. it says on the metco site that use of the 9.1 ring requires use of a smaller idler pulley. could be the contributing to my issue possibly? (currently it has clearence but is very tight)

http://www.metcomotorsports.com/prod...ankPulleyRings
have you called ted Janetty or LPE or someboday yet??? I would try to talk to someone in person. the lingenfelter info I have seen list the 9.17 wtih everthing stock as acceptable. there is a section where they show they have another bracket you can run but it is not required until the 9.55 pulley.
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Old 12-09-2012, 08:46 PM   #20
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have you called ted Janetty or LPE or someboday yet??? I would try to talk to someone in person. the lingenfelter info I have seen list the 9.17 wtih everthing stock as acceptable. there is a section where they show they have another bracket you can run but it is not required until the 9.55 pulley.
i bought the balancer and ring from jannetty and they never mentioned needing a smaller idler or a relocation bracket, stumbled across the 9.1 needing a smaller idler or a relocation when i was looking to order the 8.6" ring on the metco site. im not tuned im running the rotofab intake and torco. lingenfelter tested untuned to 9.17?
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Old 12-09-2012, 10:50 PM   #21
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Always aim before pulling trigger!

http://weaponxmotorsports.myshopify....ng-mods-needed

Hope his helps.
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Old 12-09-2012, 11:19 PM   #22
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possibly, i dont know if thats the issue tho, could be belt due to pulley or maybe knock retard XD i need to log it : /
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Old 12-09-2012, 11:44 PM   #23
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i bought the balancer and ring from jannetty and they never mentioned needing a smaller idler or a relocation bracket, stumbled across the 9.1 needing a smaller idler or a relocation when i was looking to order the 8.6" ring on the metco site. im not tuned im running the rotofab intake and torco. lingenfelter tested untuned to 9.17?
no they tune for 9.17 but it has the blower rpm and idler dia etc for the different dia pulleys. there info does not show it as required but I have not ordered yet. I am waiting till after x-mas just in case santa brings it to me ha ha.
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Old 12-10-2012, 12:36 AM   #24
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no they tune for 9.17 but it has the blower rpm and idler dia etc for the different dia pulleys. there info does not show it as required but I have not ordered yet. I am waiting till after x-mas just in case santa brings it to me ha ha.
thats weird metco does but lingenfelter doesnt, just going to get the 8.6 ring i think at see if the problem persists.
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Old 12-10-2012, 05:13 AM   #25
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thats weird metco does but lingenfelter doesnt, just going to get the 8.6 ring i think at see if the problem persists.
If you take a look at the side of the tensioner, there is a mark where the range of the tensioner needs to be. If you aren't in that marked range, you probably don't have the correct tension on the belt as per one of my comments above.
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