another measurement needed...lol
Turbo Mini Forums

Hi guys, please could some have a quick measurement of the cam sprocket? I need to know the width of the sprockets (inc boss) but don't have a spare sprocket to measure!




Cheers

Matt

Edited by matty on 7th Aug, 2007.

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1/4mile in 13.2sec @ 111 terminal on 15psi

Just measured two of them, different makes but don't know what makes.

One is 19.3mm the other is 18.3mm

Edited by Rob H on 7th Aug, 2007.

Cheers mate, thats quite a big difference!!

Am I right in thinking that there is some end float in between the sprocket and triangular thrust washer?

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1/4mile in 13.2sec @ 111 terminal on 15psi

I think it's simply a case of how many turns you put on the retaining nut. By fluke there's an article in this months mini mag about cam drives and if you look at the pictures there's clearly a visible difference with regard to how far the thread extends past the sprocket.

you adjust the cam end float by machining that boss smaller (the 'step' on the cam-side).

Doesn't the edge of the sprocket run up against the triangular thrust washer as opposed to running against the end of the cam?

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1/4mile in 13.2sec @ 111 terminal on 15psi

runs against the end of the cam..

try to pick up a double cahin one, you'll have a little more space to seal it , if that's the trick.