Sup guys I currently have a 11:5 comp b20 all motor
But it has a spun bearing I made 210.

I'm looking to bump it up

Is 86 mm posited if so give me some ideas

 

You can do 86mm but the block will need to be sleeved.

 

I understand that
I was thinking rs sleeves

 

Im not 100% positive on this but with the b20 blocks many shop wont resleeve it because of its design, it sinks or leaks after a while. Only shop ive seen the b20 get resleeving from is Golden Eagle. But like i said im not sure, you need to double check with the other companys.

btw, what is your engine specs going to be? why are you going such a big bore on these b-series? Personally i wouldn't waste a newly sleeved block by going straight to 86mm bore unless its a race only engine with a big stroke crank underneath it.

 

AEBS sleeves