I know of two people who have suffered pulley problems at high rpm on the zetec engine.

The tensioner on the black top is automatic so I will be looking to change this for a manual adjustment one like on the Rover turbo engine or possibly another one if anyone has an alternative solution?

I would like to use metal pulleys as I've been told the plastic ones can fail too.

The plinth on the pulley is also 25mm diameter so I will be looking to make a wider one as Ive heard of the side load on the idler snapping the bolt off.

I would prefer to buy one off the shelf, before I look at making one up.

 

Guess knowone on this site has a clue about this then? LOL

 

i used the gates tensioner kit it was a ford reccomended change as the pulleys where well known for braking down. they are still palstic but it seems to work

 

as someone that works in a autoparts store i can tell u that the metal one workk a HELL of a lot better, if u can get to a parts store u should be able to show them what u have and then they could mach it up, the best thing about a metal pully is that all u need to fix it is a 203ff baering with here in the stats is $4.00. if u cant find it let me know and ill give it a go.

good luck

 

I've been to an autoparts store today but not much luck at the moment.

There a couple of alternatives but they will need extensive work to fit with alot of machining work.

I would be gratefull if you could look into it for me.

Cheers

Austen

 

k give me the size across the pully and how wide it is, u may need a new belt but we can cross that brige when we get there.

 

Both pulleys are 30mm wide by 60mm diameter

From the end of each pulley to the end of the mounting platform it is 48mm

Both attached to head by M8 bolt

Cheers

Austen

 

Have you tried Dunnell or Raceline, if anyone has them they will.

 

just to be clear we r talking about the belt tensioner not the cam gear? if so whats the 8th letter/# in the vin code? this may help, i highely dout it but what the hell if ur going to do smoething u better do it right.
for the us models i have found a pully already but i want to make sure we have all ur bases covered so im not sounding like a dipshit.

 

Yes it is the tensioner pulleys

Here is the standard set up for the Black top / ST170 engine

Diameter 60mm
Width of pulley 30mm
From outer end of pulley to mount which goes to the head 48mm











Pic of them on the head

 

ok thats great that u got some pics up for me to see ill look for something, we call thoes timing belt tensioners so ill see what i can come up with and let u know, can they spacer on the pullys come off, u may need to re use them.

 

ive seen 3 or 4 of them go to oblivion, thankfully not on my own car, but the first one i sorted totally wasted the valves as the guy kept driving it with no tension on the belt and it inevitably jumped , the second one the guy stopped str8 away when he heard it start making a racket and we got away with a new belt and tensioner after finding every single bearing as they had all gone behind the bottom pulley etc. right kerfuffle.
definately worth changing, as these were on standard engines not being given any stick.

 

I've found some replacement pulleys which are perfect for the job.

The mounts will need to be modified slightly to work with the Zetec M8 bolts and one of the plastic pulleys has been removed from the bearing and replaced with a custom machined metal item.

Will post pics soon.

 

hey ive been working like a dog, ive found a few that look colse but colse only works in horeshoes and handgrands. but im glad u found something