h22 bored, stroked to 2.5 need to know what sleeves to put... i heard that the walls are really weak especially since its bin bored....does anyone know anything..need info

 

When the person bored it out, what did they
recommend for sleeves?-Bob

 

benson , dart .. ?? give them a call and tell them what you did and what you want.

hopefully you have about 1400$ in your pocket for sleeves now . good luck!

 

why would you pay someone to bore out an engine that you have to re-sleeve to run?

doesnt that mean you just threw away however much it cost to bore?

or am i misreading something here?

 

^^uh? Your always going to need to be re-sleaved after a bore arent you?

 

just so we are all on the same page, here is a pic.

the red circled area is the sleeves, on hondas, they are all connected (for strength and stability, as its an open deck).

the piston moves up and down inside its cylinder, which is the inside of one sleeve. the "bore" of the cylinder is the sleeve for that one cylinder.

when someone has their engine "re-sleeved", they are removing this weaker set of sleeves, and installing, usually a ductile iron set in place of them.

the bore is an EXTREMELY precisely cut cylinder that the piston fits into. this bore, on stock B-series engines, is 81mm (less the 84mm B20).

when someone has their engine "bored", a machine shop is using a mill to increase in I.D. (inner diameter) of the cylinder to allow for a bigger piston for increase displacement, or because a proper hone cannot be performed.

once a bore is done, the engine just needs a slight hone, and its ready to rebuild. re-sleeving means a new bore/hone must be done, and hence, if an engine is bored, and then is sleeved, the bore was a waste of money.

unless for some reason i dont understand anything about engines, which has happened before

*EDIT*
and to answer your exact question, no, thats why honda makes oversize pistons, so engines can be bored by 0.25mm without having to be re-sleeved EVERY rebuild.

 

ur right on this one...

 

FRM sleeves are finnicky

you need to resleeve, especially with an overbore that large

and is it overbored AND stroked? or what, what is the overbore?

 

bored and stroked to 89mmx100mm