Stillen supercharger belt slipage

Kamillio · 04-11-2017, 12:33 PM

I have your added idler pulley with your special spacer!

It's something else that's causing the belt to not be tensioned...

Previous to the SC build I had lightweight underdrive pulley at the crank and overdrive at the alternator, I had those removed for the SC build.

The shop had to remove the alternator to install the pulley for it. Is it possible that the alternator had brackets that let it be moved by 1 or 2mm? Maybe they didn't position it perfectly, which didn't cause problems when the car was NA

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TBatt · 04-11-2017, 12:36 PM

Quote:

Originally Posted by Kamillio

I get a loud belt squeal along with loss in boost exactly when the squeal happens. Only at high rpm.

Also, my belt tensioner reads that every single one of the 3 brand new belts I tried is not tight enough.

I tightened the SC side little belt and it didn't help.

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I'm not sure why there would be a tensioning problem unless a wrong diameter pulley was installed somewhere. Dumb question: have you made certain that the belt is routed correctly?

TBatt · 04-11-2017, 12:40 PM

Are you using the standard K081088 belt or the HD version?

Kamillio · 04-11-2017, 12:48 PM

Everything is routed correctly. I used everything from NAPA belt to the Gates Racing belt. Not the HD belt though. All belts are not tensioned correctly.

If I had a correctly tensioned belt and it would slip I'm sure that the HD belt would be the answer. But my belt is not tensioned correctly.

I want to look into the alternator but before I do I would want to confirm that in fact it can be installed a few millimeters off

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TBatt · 04-11-2017, 02:09 PM

Here is a picture of my tensioner with the HD belt.

TBatt · 04-11-2017, 02:16 PM

The alternator does use a mounting bracket so you may be onto something.

Kamillio · 04-11-2017, 06:28 PM

Your tension looks perfect Tbatt. Mine has never been like that.

I'll try it and if doesn't work then I'll order the HD belt. At that point last thing I'll be able to think off as a reason is that that my belts stretch. But that seems extraordinary.

I'll check in two weeks after I'm back from vacation

I need to be ready for ZdayZ!!!

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ChaseZ · 04-11-2017, 06:42 PM

Quote:

Originally Posted by TBatt

Here is a picture of my tensioner with the HD belt.

I need to back the nut off mine and give it a bit more tension when I swap the new pulley and belt on. Not because of the pulley and belt, because it needs it anyways. Easy enough to do obviously but pretty sure I'll have to grab a second pair of hands to do it.

Kamillio · 04-11-2017, 06:44 PM

Quote:

Originally Posted by ChaseZ

I need to back the nut off mine and give it a bit more tension when I swap the new pulley and belt on. Not because of the pulley and belt, because it needs it anyways. Easy enough to do obviously but pretty sure I'll have to grab a second pair of hands to do it.

Yours is too tight?

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ChaseZ · 04-11-2017, 07:59 PM

Quote:

Originally Posted by Kamillio

Yours is too tight?

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Mine is sitting something like this right now. Just a little towards the drivers side past those three bars. Not at home to take a pic.

Kamillio · 04-11-2017, 08:09 PM

Quote:

Originally Posted by ChaseZ

Mine is sitting something like this right now. Just a little towards the drivers side past those three bars. Not at home to take a pic.

Mine is the same exact spot. This means the belt is lose and the tensioner is pulling it too hard. I tried to adjust it with the bolt and could not. If you figure it out let me know!

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ChaseZ · 04-11-2017, 10:30 PM

Quote:

Originally Posted by Kamillio

Mine is the same exact spot. This means the belt is lose and the tensioner is pulling it too hard. I tried to adjust it with the bolt and could not. If you figure it out let me know!

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Has to be adjustable that way. Mine is where it is because I was trying to adjust it with the bolt when there was no belt in and it went to far - I just haven't adjusted it back yet.

When I get Tbatt's kit I'll address it then and report back if 'resetting' the idler position by that bolt worked or not, thing I'm confused fident it will.

04-11-2017, 12:33 PM	#16 (permalink)
Kamillio Enthusiast Member Join Date: Mar 2015 Location: FL Posts: 445 Drives: N/A Rep Power: 52	Stillen supercharger belt slipage I have your added idler pulley with your special spacer! It's something else that's causing the belt to not be tensioned... Previous to the SC build I had lightweight underdrive pulley at the crank and overdrive at the alternator, I had those removed for the SC build. The shop had to remove the alternator to install the pulley for it. Is it possible that the alternator had brackets that let it be moved by 1 or 2mm? Maybe they didn't position it perfectly, which didn't cause problems when the car was NA Sent from my iPhone using Tapatalk __________________ 370z Last edited by Kamillio; 04-11-2017 at 12:37 PM.

04-11-2017, 12:40 PM	#18 (permalink)
TBatt Track Member Join Date: Apr 2013 Location: Huntsville, AL Posts: 832 Drives: 2019 GT-R Rep Power: 20169	Are you using the standard K081088 belt or the HD version? __________________ RJM pedal, Hotchkis Sway Bars, FI TDX, FOG Light, Z1 Slotted Drilled rotors, Stillen SC, Quaife ATB, Z1 Oil cooler, AEM Gauge Set, Galeforce gauge mount, Avant Garde M590 Hypersilver w/RE-11, TopgunZ A2A kit., ECUtek tuned by Seb: ROLL TIDE!

04-11-2017, 12:48 PM	#19 (permalink)
Kamillio Enthusiast Member Join Date: Mar 2015 Location: FL Posts: 445 Drives: N/A Rep Power: 52	Everything is routed correctly. I used everything from NAPA belt to the Gates Racing belt. Not the HD belt though. All belts are not tensioned correctly. If I had a correctly tensioned belt and it would slip I'm sure that the HD belt would be the answer. But my belt is not tensioned correctly. I want to look into the alternator but before I do I would want to confirm that in fact it can be installed a few millimeters off Sent from my iPhone using Tapatalk __________________ 370z

04-11-2017, 06:28 PM	#22 (permalink)
Kamillio Enthusiast Member Join Date: Mar 2015 Location: FL Posts: 445 Drives: N/A Rep Power: 52	Stillen supercharger belt slipage Your tension looks perfect Tbatt. Mine has never been like that. I'll try it and if doesn't work then I'll order the HD belt. At that point last thing I'll be able to think off as a reason is that that my belts stretch. But that seems extraordinary. I'll check in two weeks after I'm back from vacation I need to be ready for ZdayZ!!! Sent from my iPhone using Tapatalk __________________ 370z

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