cam play

C

cars56

Senior Member
Hi all, Cam won't lock down when timing ignition (lots of play in each direction), even with a lot of torque on the cam screw? suggestions please, thanks
 
Hello....Just got finished with the same problem on my 30. Turned out to be the intermediate distributor shaft was worn from insufficient lube over the years. Took a while to figure out but it was an easy fix. Cheap too. I'm out on LI. Pretty sure Joblot in Queens has the shaft. Bud
 
If you are talking about backlash in the distributor shaft, there will usually be some. There is a washer that should go under the cam screw. As long as it is set with ALL of the backlash in the counter clockwise direction it won't effect the timing or anything else. The distributor turns in the counter clockwise direction when the engine is running but rides on the clockwise side of the backlash. When the cam screw is tightened, the trailing edge of the rotor tip needs to point exactly at the number one spark plug contact inside of the dist. cap body with no clockwise backlash.If you can do this and the points gap is correct (.018 to .022 ) you will be amazed at how good and fast it will run.
 
Some times the pin breaks in the two piece shaft and allows the upper shaft to spin. Worth a look remove and check it.
 
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