Jump to content
Ultimate Subaru Message Board

Which 48mm & 52mm main bearing size? Photo.


Recommended Posts

You can't tell from the markings. The 2001 is a 52mm crank and the 96 is 48. Also the thrust bearing ( the one with the flanges) is in position 5 on the 01 and 3 on the 96.

The first group of letters gives the tolerances for the crank. A is std. B=.03, C=.05 and D= .25. This is all listed on the engine spec page in the fsm.

The four others are the rod bearing tolerances.. Haven't figured out those, except that the first being all I's says they are at least the same.

This is part of the reason why rebuilding is so cost prohibitive. In order to use the same bearings, the crank must be machined. Subaru does sell crank bearings individually, but you better be sure of the measurements. You won't be able to return them.

Rod bearings only come in sets.

 

O.

Link to comment
Share on other sites

I'm not sure what code stand of? Left side is 2001 ej25. Right side is 1996 ej25

Let me know how can tell 48mm and 52mm crankshaft main bearing size?

 

Thanks!

 

Use a dial caliper and measure the rod journal.

 

If you can't use a dial caliper you shouldn't be dealing with engine internals.

Link to comment
Share on other sites

Please sign in to comment

You will be able to leave a comment after signing in



Sign In Now
 Share

×
×
  • Create New...