Author Topic: Slipping Belts  (Read 6290 times)

Offline Jacque

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Slipping Belts
« on: September 16, 2011, 12:05:29 pm »
Hi,

I am running a 68mm poullie with SLS 144hp chip and a full reconditioned charger (2500 miles on it)

i had fresh new original VW belts (2) installed on the charger. is it normal that they tend to slip from about 3500 rpm after a few months? i already had to tighten them up twice in a period of 5 months (2500miles - 3500km)  (loosening the charger and taking out the airfilter to get a stick against the charger and pull :p... not very nice but i have no idea or tool to do it otherwise)

or would it be better that i search for some custom belts? also one belt is a little more loose then the other one. not much but it gives a bit more strech...

i know toothed pulleys exist but from what i hear the charger needs quicker maintenance?  where can i find a good setup? do the belts have to be changed aswell for a toothed pulley? and what needs to be done to change them)

some questions, i hope someone can give me some advice how to deal with this problem.


greetz.

Offline grungeisdead

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Re: Slipping Belts
« Reply #1 on: September 16, 2011, 12:46:40 pm »
toothed pulleys required toothed belts.

the charger service maintaince should only be reduced should you have a smaller charger pulley. I have not seen any toothed belt kits that have larger than a 65mm pulley.

you can get belt dressing spray from ebay (you definately can in the UK, not sure about France) that should help your belts 'stick'

Offline samg40

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Re: Slipping Belts
« Reply #2 on: September 16, 2011, 02:34:51 pm »
There is a notch on the charger bracket that you can put a breaker bar in to tension the charger. With your existing belts you may get more tension into them using that than the method you are using now. Sticky belt dressing is worth a go too.

Offline Jacque

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Re: Slipping Belts
« Reply #3 on: October 03, 2011, 11:37:36 am »
Hi,

is there a specific tool from vw for thightening that chargerbelts? if so, anybody would have the serial number? i could order it but they don't know the sr-number

or is handmade the way to go?


thnx

Offline samg40

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Re: Slipping Belts
« Reply #4 on: October 03, 2011, 12:12:45 pm »
Just a normal breaker bar/wrench end fits in the hole.

Offline Jacque

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Re: Slipping Belts
« Reply #5 on: October 05, 2011, 11:43:49 am »
Thanks for the tip!

will a 1/2inch Breaker fit?

example: http://www.forcetools-kepmar.eu/Force-802434-1/2-Verstelbaar-wringijzer-met-ratel

thanks in advance!

Offline AlexG40

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Re: Slipping Belts
« Reply #6 on: October 05, 2011, 04:14:29 pm »

Offline samg40

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Re: Slipping Belts
« Reply #7 on: October 05, 2011, 04:26:47 pm »
Much cheaper at machine mart!

Offline AlexG40

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Re: Slipping Belts
« Reply #8 on: October 05, 2011, 05:42:00 pm »
Yeh, it's just an example. Nowt special needed. I used to have a massive 1" drive ratchet or something with a reducer on. That was handy for this job, the issue with the breaker bar is there's only 4 positions to shove from.

Offline ereeiz

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Re: Slipping Belts
« Reply #9 on: November 16, 2011, 04:36:16 am »
Off the top of my head (I've written it somewhere else on here) the Haynes manual recommends 80Nm for worn belts and 110 Nm for new V-belts. To achieve this get a torque wrench that has a dial on it (not one that "cracks" as it reaches its torque) insert the head into the drive hole on the side (the big square hole that looks like the back of a socket) and push until it reaches the desired torque. Then do everything up.

I tried this and it's not very easy. They need tightened all the time and are a pain in the arse in my opinion and should be swapped for another set up at the earliest opportunity. There's toothed belt designs, v belt designs and serpentine belts. I've no experience of serpentine belts on a G40 but I'd guess they're better than twin V-belts otherwise manufacturers would use them instead of serpentine belts to run PAS, AC, alternators and whatever other auxiliary bits are bolted onto modern engines.

I find I have to adjust my set-up every 2 weeks or so (I run 65mm toothed belt) which is roughly 1000miles. I stripped 25% the teeth off the first belt and killed it in about 5k miles. But I do drive like a loon and am addicted to 3rd/ 4th gear overtakes  ;D
« Last Edit: November 16, 2011, 04:40:51 am by ereeiz »

Offline Jacque

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Re: Slipping Belts
« Reply #10 on: January 26, 2012, 12:30:42 pm »
shorter bellts should help aswell? on roettelle racing.de they sell shorter bells accordingly to the pulley size.  i m gonna try it out in a few monts when i need to replce them

Offline poloandyb

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Re: Slipping Belts
« Reply #11 on: March 26, 2012, 08:05:46 am »
iv used belt spray on mine mate,mine dosent slip anymore on a 65mm pulley,you can get it from any good spare shop