I have a 1200 in which the timing moves. I set the timing right then run the engine for a little while and it cuts out and the timing has moved
so would this be the timning gear on the distributor shaft? (the one that sits under the distributor on the cam)
marcel

marcel have a look at the clamp that holds the dissy .I had the same problem with one it was cracked at the back .

is there any movement side ways in the dissy ??

its not he distributor thats moving its the position of the rotor, so I have to turn the distributor further anti clock wise all the time, so somethings wrong there
marcel

sounds like you need to remove the dissy and refit it to me .

I have a set of 1200cc heads now there from the test motor those barrels came off .

is good cond * needs one spark pulg thead repaired $100.00 has valves ect ,look very good . seagull

I would suggest your main bearings are shot. Take the dizy cap off and pull the crank pulley in and out ... watch and you will see the dizy move around. End float relates to timing change.

Hi

Also make sure the base plate in the dizzy isnt moving about.

1302Steve

I had a similar problem on my kombi.
Set to the points, set the timing. Start her up. VROOMMM!!

rev rev bang!

The NEW points were crap. There was NO tension in the spring.
This MAY be your problem.

Have you stripped the thread in the base plate so you cant tighten the points in poistion??

If your points are moving then you timing changes

To add to the list of potential problems, my kombi had a similar problem. I'd set the timing, rev the motor, recheck the timing and it would be off. Turned out it was both the vacuum and mechanical advance mechanisms were gummed up and sticking. It's not too hard to strip the distributor and lubricate these bits.