main journal spec

[BigYellowIron]

I am in a bind and search is not doing what I need it to do.
I need to know what the standard size main journal is on a 12v crank.

Im putting my puller engine together and Im using the same crank that came out of the block. When I plastigauge it it shows less then .002 clearence.

ANyone have the spec?

THANKS

Adam

 

[1/2TONCUMMINS]

Standard main journal - 3.2662 in.
If you need more info let me know.
Jimmy

 

[seeker1056]

From the Chrysler supplimentary manual

Mains:
journal out of round - max is .050
journal taper - max is .0005
clearance - maximum is .0047

Rods:
max journal out of round - .002
max taper - .0005
max clearance .0035

 

[BigYellowIron]

Thanks.

Do you have the spec for the main journal bore in the block?

 

[seeker1056]

3.2719 with the bearing installed, maximum