---- i lost the repair manual... but i dont think that would help much..... anyways... for turbo applications on a built motor, what are the bearing clearances for the main bearings, and the rod bearings

I have my block and pistons and ---- for my built engine sitting in the garage,,, and i just need these specs so i can start building

 

hey buddy. look at the top. there's the service manual.
https://www.homemadeturbo.com/forum/...threadid=10912

 

Albert, ---- a service manual. They'll give you figures of .007=.013 or some ----. They don't really give you an exact number, just a range of acceptable tolerances. I did my crank and rod bearings .015. A little looser than normal, but definately not too tight is the key.

 

"OR SOME SH*T"

that scares me.. lol

 

It scared me too. They give you a range of numbers that are "within tolerances" but with a built motor me and the machine shop decided that a given number on the loose side would be better than being tight whatsoever.

 

I heard the same thing steve.

Forced induction u want looser tolerances
Nat Aspirated you want tighter.

Look on the crank, you should see castings with #'s. then you'll see some on the block, and on the rods. these all correspond to the chart for colours.

ANY dealership should be able to photocopy you this chart.

 

check it out...

https://www.homemadeturbo.com/forum/...threadid=25134