Hi all ,

Hope you can help .

Are the Sierra cosworth cam pulleys and aux pulley the same size where they go onto the cams and aux shalf .
What I mean by this is the centre bore size .
I’m trying to fit the aux pulley onto the shalf but seems aux shalf to wide to push pulley on .

Want to know if different size cause if they are I might be trying to fit a cam pulley onto the aux .

Many thanks in advance

 

there deffo the same size, give it a clean with some emery paper




Steve

 

i had the same problem .aux is different bore as far as i know

 

Cams 24mm
Aux 26mm

 

I might have a spare if you need one.

 

Thanks costina but I’ve located one now .

Thanks anyway

 

that did suprise me i'm sure I've swapped them over before, but I checked last night and yes it's different!


Steve