MINI2

daleCarlsbad · Dec 27th, 2006, 01:37 AM

A few hundred miles ago I had an M7 supercharger pulley install at a local mini ship.

I now have a loud clank, clank, clank coming from the tensioner/belt with black (rubber) dust on that side of the engine!

Has anyone experienced this before.......whats the fix?

The car has 6K miles, the original belt was used, the pulley bolts, tensioner bolts are tight and the belt looks to be riding in the middle of the pulley although a few mm side-to-side movement while running.

Any thoughts or help appreciated.

Berthil · Dec 27th, 2006, 04:32 PM

Maybe your tensioner is hitting something because your have the stock belt and your running a 16% pulley. There could be too much room for the tensioner so it snaps to far back when you release the throttle?

It's a good idea anyway to get a smaller belt, the dealer should have them and they are not expensive, over here about 50 euro's with labour.

k-huevo · Dec 27th, 2006, 06:50 PM

The stock Conti belt is ok with the 16%.

There should be no side to side movement when observed at the SC pulley unless the pulley is installed cocked at an angle. That kind of misalignment would cause the belt to hunt for good land & groove interface and surely the belt would walk, if the belt were traveling in and out of the grooves that would cause the belt to tighten and loosen rapidly overworking the tensioner damper. If the damper has failed the tensioner spring would oscillate but that would not cause the belt to move left and right.

You must redo the installation; new belt, pulley, and installer (DIY ensures conscientiousness). I’m biased against the product/vendor used (was not the first pulley defective?) but more than likely it was an installation error. There is a small chance the damper coincidently failed at the same time.

Dec 27th, 2006, 01:37 AM	#1
daleCarlsbad MINI2 Newbie Join Date: Aug 2005 Local Time: 01:56 PM Posts: 9 Offline	Clanking noise after pulley install A few hundred miles ago I had an M7 supercharger pulley install at a local mini ship. I now have a loud clank, clank, clank coming from the tensioner/belt with black (rubber) dust on that side of the engine! Has anyone experienced this before.......whats the fix? The car has 6K miles, the original belt was used, the pulley bolts, tensioner bolts are tight and the belt looks to be riding in the middle of the pulley although a few mm side-to-side movement while running. Any thoughts or help appreciated.

Dec 27th, 2006, 04:32 PM	#2 (permalink)
Berthil MINI2 Master Join Date: Dec 2004 Location: Sittard (NL) Local Time: 10:56 PM Posts: 759 Offline	Maybe your tensioner is hitting something because your have the stock belt and your running a 16% pulley. There could be too much room for the tensioner so it snaps to far back when you release the throttle? It's a good idea anyway to get a smaller belt, the dealer should have them and they are not expensive, over here about 50 euro's with labour. EB/W R53 MCS Highly Modified

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Rate This Thread
Rate This Thread:

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Clanking when reversing	Roofas	Wheels, Tyres & Brakes	0	Mar 13th, 2007 06:04 PM
Alta Pulley Install?	whokilledkaji	Engine & Drivetrain Tuning	12	Mar 15th, 2006 01:12 AM
Pulley Install, Yes or No?	rmorin	Engine & Drivetrain Tuning	8	Feb 9th, 2005 02:44 AM
Did it myself - Pulley Install	BluMiniMe	Engine & Drivetrain Tuning	0	May 30th, 2004 09:20 AM
So Ohio Pulley Install	mikehome1	Engine & Drivetrain Tuning	9	May 31st, 2003 10:51 AM

MINI2

Fuel for your MINI obsession

From air-filters to exhausts and all in between, discuss them here

Today
Sponsors	Sponsored Links Registered members do not see Google Ads posts, they can also post messages, pictures, and classified adverts. Register your free account today and become a member of MINI2 - MINI Forum

Dec 27th, 2006, 06:50 PM	#3 (permalink)
k-huevo Trailer Trash Join Date: Mar 2005 Location: Pipe Creek, Texas Local Time: 04:56 PM Posts: 163 Offline	The stock Conti belt is ok with the 16%. There should be no side to side movement when observed at the SC pulley unless the pulley is installed cocked at an angle. That kind of misalignment would cause the belt to hunt for good land & groove interface and surely the belt would walk, if the belt were traveling in and out of the grooves that would cause the belt to tighten and loosen rapidly overworking the tensioner damper. If the damper has failed the tensioner spring would oscillate but that would not cause the belt to move left and right. You must redo the installation; new belt, pulley, and installer (DIY ensures conscientiousness). I’m biased against the product/vendor used (was not the first pulley defective?) but more than likely it was an installation error. There is a small chance the damper coincidently failed at the same time.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)