phaphon

ok i bought the whole rebuild kit for my b18b since i cracked a piston and it did do a small amount of damage to my cylinder wall it's scratched and i was wondering do i need to get it bored ? since im on a tight budget i was wonder if i would be able to get away with just putting everything together the way it is

up&atam

get it bored.

CX-Adam

It's best to get it bored. Otherwise you'll burn a lot of oil and possibly have a bunch of other problems.

When I rebuilt my D15B8 I used a cylinder honer to remove the lip caused by all the cylinder wear but that's a really crappy way to fix an engine. I only did it because I was going (and I did) drive that motor into the ground (Actually, that's a lie. It still runs great. I just have no use for it). You could possibly do the same. All it takes is the jig and a drill. But I wouldn't build the motor.

It also depends on the depth of the scratch.

phaphon

the scratch is a pretty light scratch i also did hone mines theres still a small scratch most likely if i can afford it ill maybe just bore it cause i dont really want to get another block from craigslist

EJeff8

Getting it bored is always a positive thing to do regardless. You see some scratches, it's even more recommended.

david623

Will it come out with 600 grit sandpaper wetted with motor oil? Maybe then you don't have to worry so much. If you are going to rebuild the whole thing, why did you not plan on boring it in the first place? Not a good place to save money if you want it done right.

phaphon

the rebuild was not really plan'd i was forced to since my piston cracked and yeah i guess im just gonna bore it any recommendations? should i go with 81.5 or 82mm?? i plan on boosting this motor

EJeff8

.5 should be just fine. You don't want to go any farther than you need to.