318 crank play ?

[rick_rawker]

Is it normal to see the crank pulley move in and out slighley while revving the motor ? I have double checked the tightness of the dampner, the 1
1/4 bolt, seems tight.

 

[krazykuda]

If it's only a smidgeon, then it may be ok. but if it's more than a tad, then check your thrust bearing...

 

[318willrun]

I had a cheap converter that worked on the thrust bearing in a 340. that crank would move in and out about .040 (guessing).....

 

[AJ/FormS]

You should not be able to see it. End play should be in the neighbor hood of .010 or less.
Between a smidgeon and a tad, its not the end of the world yet. But it is possible that the end is coming.The T-bearing wont heal itself. Keep your eye on it. When it gets close to a tad, rip it out.

 

[rick_rawker]

So the thrust bearing is in the front, or is it what keeps popping up in my searches as part of the transmission ?

 

[Darter6]

The thrust bearing is the center bearing of the engine crankshaft.