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The mkiv Supra Owners Club

Bottom pulley & squealy fanbelt!


Matt Harwood

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I think I got away quite lightly this evening.

I was just coming off a motorway sliproad and changed down a gear, and I noticed a squealing noise. I looked around, but there were no other cars about. As I pulled away, I realised it was my car that had the squealy fanbelt.

 

After a chat with Dude, we've come to the conclusion that my bottom pulley is buggered, and it's managed to move itself forwards!

 

The belt is still on the pulley, but now sitting behind where is should, and it's carved it's own groves into the rubber section!

 

Before anyone asks, the cambelt was changed 25,000 miles ago.

 

Here's a couple of pictures for Dude and for anyone else's future reference.

vanishing act!.jpg

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Second one ive seen in a week and the first is a car that the guys had for 4 years , he's had 2 belts on it and never a gas axe near it !!!!!!!! these are now 11 years old on some cars be prepared to see a few more !!!!:eek:

 

Dude:flame Dev

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Originally posted by Darren Blake

Looks like the rubber between the hub and the torsional damper / pulley has separated.

 

So who changed your cambelt and how did they get the pulley off...? :mad:

 

It was dont by Toyoda Tech, nearly 2 years ago. Whilst I do have issues with work they've done, I doubt the old heat 'n' melt trick would have taken this long to surface.

 

Until I see it off the car, I think Johns right, it's just showing it's age. :(

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Originally posted by Darren Blake

Unusual failure, though. Its not like there are any end loads on the pulley to pull it forwards.

 

Dude: On the other car you saw, did it have any cranktrain modifications? Lightened flywheel, etc?

 

Darren it was a stock car but hi miles and i only saw the pulley , it could have been caused by using a 3 legged puller on the outer rim i suppose , guess we'll never know as his mechanic isn going to own up to breaking the thing !!!

 

Dude:flame Dev

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Originally posted by dude

Darren it was a stock car but hi miles and i only saw the pulley , it could have been caused by using a 3 legged puller on the outer rim i suppose , guess we'll never know as his mechanic isn going to own up to breaking the thing !!!

 

Dude:flame Dev

 

Ok, thanks for the information.

 

I think Matt has a light flywheel and I was just wondering whether some kind of vibration may have destroyed the rubber or shaken it loose.

 

Just a thought.

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