Cosworth jumped cam belt
 

Hi, has anyone experienced a cam belt jumping a couple of teeth when their fan belt snapped.
I suspect that the fanbelt went between my cambelt and distributor pulley as when I checked the timing marks the dis pulley was not on the correct mark, however the car still run!
I have also set the distributor up using the little mark and rotor arm.
I am paranoid that the car had been setup deliberately with the distributor pulley one or two teeth out and that the cam belt had not even slipped, would there be any reason for this?
Cheers Pete

Seems unlikely if you have cam cover on as the fan belt can't get on the small timing belt pulley

I had a belt 'stretch' due to oil contamination , it jumped off completely though on mine :sad:

Happen to me years ago, inlet cam broke in 3 pieces

Ouch! Was the head ok?
I remember an odd scraping noise over the music at 70. I thought the exhaust fell off or something , how wrong i was :cry:

Head was oki, new valves, guides and cam. Then it was up and go again

i had mine go on a 35k car back in the day ,pulling out of a junction at 5 mph the car just juddered to a stop.the fan belt somehow got behind the belt and it stripped it then broke it .
every fookin valve was bent in it ,:cry::wall::wall::wall:

everything was 100% standard from the factory at the time :oops:

It will still run but the ignition timing will be out.

Martin

Fan belt???:?

the position of the cam belt pulley that drives the dizzy & oil pump doesnt mater as the dizzy could have been taken out & put back in a different position. take the cap off & have a look if the rotor arm aligns with the notch on the dizzy housing.