What Main bearings to use?

[BillaMustang]

Should I use the standard half groove or 3/4 groove or Full groove?

I'm using a Scat Series 9000 cast crank.

 

[thumper460]

up to the clearances on the crankshaft!! the full grove is best, but the half groove works fine!! Either one is cool!! do a cost thing... how much more are the full grooved??? more than 20.00?? Then the 1/2 is cool!!

Just me................................

Thumper

 

[Rick 91GT]

Just make sure your bearings have the chamfer that the SCAT crank has....