Log in

View Full Version : CAN THE B20 84MM be BoRED OUT TO 86mm ?


Annihilation
10-20-2006, 05:32 PM
CAN THE B20 84MM be BoRED OUT TO 86mm ?

Or will it need to be sleeved?
Vteckidd
10-20-2006, 05:50 PM
needs to be sleeved.

honda service manual says that if there is VERTICAL scratches the block is to be thrown away.

you cant even go 84.5mm
2.0civic
10-20-2006, 05:51 PM
what does vertical scratches have to do with it?
Annihilation
10-20-2006, 05:57 PM
damn they had a great deal on ebay for 86mm pistons................damnit
Vteckidd
10-20-2006, 06:08 PM
what does vertical scratches have to do with it?
vertical scratches means the cylinder walls have excessive wear. per honda service manual vertical scratches calls for an overbore an hone.

usually on B16/LS/GSR/ITR you can go .10 .20 over. i have done motors that are .40 over as well.

on the B20s, they use a thinner sleeve, and honda says basically you cant even hone it.
2.0civic
10-20-2006, 06:26 PM
really dumb ass question but how are sleeves held in?
Vteckidd
10-21-2006, 12:16 AM
they sit on a deck/lid at the bottom of the block