Offset dowels on cam pulley

[sambo]

Whats that all about then? I know what the function is but how is it done? I know you can retain the std cam pulley but how does it work? Any one got some pics??

 

Cheers

[escort21]

Think of the dowel as two circles on top of each other but one is offset from the other...when you turn the dowel it makes the wheel round

[bortaf]

On a pinto theres a half moon shaped dowel (or woodruff key) thats sit in the camshaft and the slot in the pully, imagine that cut in half along it's length and the top welded back on a bit to one side, it moves the top wheel round a bit to alter the cam timming, like a vernia does but cheaper (although you need a few different ones to find the right one for your aplication.

 

[caprinerd]

think that they have both covered it , cant think of an easier way to put it really

[sambo]

Cheers guys, so i guess that this also makes it easier to get the cam timing bang on when changing the cam belt too (if you have a performance cam/s in there) as you can just line up the std marks>

 

Sam.

[TwoLitrePinto]

yup, if you know where you want the cam, and have the right offset woodruff key

 

im not recommending this 2 anyone but i found with my cam my timing needed adjusting about half a tooth on the pulley, i just launched the woodruff key, put some threadlock on my bolt and wacked it up rediculously tight! i know the pulley has the potential to slip, but at the end of the day when you know 100% that the valves dont come proud of the combustion chamber and cant hit the pistons, so what!

 

anyway i used it like this for about 10k miles no problems