measuring end play in crank

[pilotracer]

What's the correct way to measure it and the range for good to bad ???

[car62]

i believe the correct numbers are .004-.007...i have seen it measured with dial indicators,as well as feeler gauges.

[billb56]

Try a search on Google.

http://www.circletrack.com/enginetech/ctrp_0403_ministock_engine_build/viewall.html

Usually .004" - .008" depending on what you are doing with the engine.

Bill

[pilotracer]

T

Anyone seem more then .008 on a race eng crank and how would u fix it

[mike22l]

- On the small main journal block, the endplay should range between 0.007 and 0.012 inch. On the big main journal block Crankshaft endplay should be 0.004-0.008 inch. Endplay cannot be tightened on this block although you can loosen the endplay by machining the thrust.....In otherwords....008 is fine.

[crcltrakr]

Crank End Play

- Endplay cannot be tightened on this block although you can loosen the endplay by machining the thrust.....In otherwords....008 is fine.

Actually, End play can be adjusted by Building up and remachining the thrust surfaces, if neccessary......

It can be opened up by carefully "sanding" the thrust bearing faces on a piece of 1/4"-3/8" plate glass. Before trying to torque the thrust cap, thunk or pry the crank forward and back to align the cap and the block, then torque, then measure at full range of movement.

Hope this helps,

[pilotracer]

The question was

The question was how do u get it back to safe szine but it would assume its the same way as getting more with a smaller trush baering just being thicker

[crcltrakr]

That's where plating or welding the thrust surfaces on the crank and regrinding come in, you restore the crank thrust to original dimensions, coupled with the proper bearing and your tolerence is back in spec....

Hope this clarifies.