is anybody running 86mm bore with a b16 head w/out c.c.ing the head? i am sending my block to golden eagle and am concidering 86mm over 84mm. any advise would be helpfull.

 

it's 42.7 cc's

 

go 84.5 or 85 so just in case, you can rebuild and go 85.5, 86 later if necessary... gutting the sleeves to 86 doesnt give you many choices...

 

golden eagle offers 2 bore sizes-- one is able to be bored 85mm and the other is 87mm. im concidering going for the 87mm sleeve but only going 86mm.i just want to know if anyboby is doing it and does the overlap of the head creat any major problems.if i do decide to do the c.c.ing of the head do i go with higher compression pistons to offset the added displacment of the head ? and how much higher?