Just got the bisi 86mm forged pistons. Now when i get the bore done i not 100% sure what i need to do with the sleevs if anything at all. Thanks for the help

 

Ask Bisi? Just sayin'

 

What a big help that was!

 

well if bisi did the work....shouldnt you ask him?

 

If your sleeved block has only been rough bored, you will need to get it honed to the correct size. But I cant imagine BISI boring and not finish honing. Check with him first. The last thing you want is to get it back and still have to mess with it.

 

Ok, I have his pistons He did not buld this I took it to get the bore for his 86mm pistons What do i need to do with the sleeves??

 

/

 

^^ F22A1 doesn't have FRM.

 

Yes, you are correct. For some reason I saw H22A1. Scratch what I said above.

 

Take your bare F22A block and pistons to an engine machinist and tell him to bore/hone the F22 to fit the pistons as per the clearance specifieded by Bisi. If your pistons did not come with a clearance spec sheet then call Bisi and get the piston to wall clearance.

Your block and pistons with the clearance should be enough info for your machinist to get the job done. You might also want to ask Bisi what you're supposed to do if you want to keep the stock press-fit wrist pin OEM rods with the forged pistons that probably have floating pins. Take that info and tell your machinist so that your pistons fit your rods.

-P

 

^^ That's what we suggest doing too.

Are you using factory style rods or have you picked up and upgraded set??

Also, the Piston to wall clearance's and ring end gap spec's are on the box