bore size

[DirtRider]

i have .25 over bore and i dont know what the bore should be. if anyone knows i would appreciate it. thanks

[frocashmoney24]

im sorry, you dont have a .25 bore, its either .20 or .30 it doesent go by 5's

[racer]

im sorry, you dont have a .25 bore, its either .20 or .30 it doesent go by 5's

unless he means .25mm cause thats how some pistons go. so, im guessing by .25mm over he has a 64.25mm bore, which roughly is equivalent to a .010in over bore, i think?

[streetshee]

mine is bored 64.25 now with prox pistons.its the next size from original.

[FireHead]

Dirt Rider's retardation strikes again.

 

[DirtRider]

not one peice of usefully information. yes they do make. 25 over bore pistons. thats 64.25 mm thats 2.52952 inches. some people should instead of confing people about chit. i wasnt the only one looking for this info.

[MotulMonsta]

Wait you have a .25 over bore and you don't know what the bore size is? Now is this .25 in inches or millimeters? Usualy overbores are measured in inches. And .25 inch overbore is beyond the cylinder's limits..So you must be refering to a metric size as the stock piston is 64.00mm and the first overbore size is 60.25mm or .010 in. over stock.

[DirtRider]

this post was very unclear but most knew what i was talking about. its is .25mm overbore thats 64.25mm = 2.52952 inches. that problem is solved now i just gotta figure out if its possable for me to hone my cylinders or if i have to pay someone to do it.

[racer]

hell no you cant hone your own cylinders. unless you are a very expericened machine operator that has one at home.

[MotulMonsta]

No, you can hone cylinders yourself. All you need is a drill press and some way to secure the cylinder. The real skill comes in the cross-hatch pattern. You got to get that right. I belive each line should intersect at about 45 deg. to each other. Not shure about that though. My dad used to hone cylinders at the house all the time when I was a kid. Chevy engines, brigs and stratton motors..shit like that.

[racer]

my bad, i must be thinking of boring

[streetshee]

a banshee aint no brigs and stratton motor!!! u should get someone to do it for u,as i understand a cylinder must be honed true to the crank, u need very acurate bore measurer,(acc to 0,001),for what it costs for a cylinder to be honed it aint worth fcukin up an expensive new top end.thats my thought anyway.

[MotulMonsta]

Never heard that before..honed true to the crank..I've never sent the bottom end of my motor with my cylinders to be honed..just hand the dude the pistons you want to slap in there, bore the bitch out and hone it. So long as you have a way to secure the cylinder, proper tools and measuring equipment you can do it at home...No if your using a cordless drill with a honing bit on the end of it..yeah your going to f*ck it up. You can even get a way with using a fine grit sandpaper to break the glaze. I've seen it done.