alright well my 230's beginning to burn more oil than it does gas, and the compression is a bit down too. and i got a race comin up quick!

so, instead of just bore it to the next overbore, being myself ima go as far as i can with it.

kustom kraft's or fst's 260 kits look nice but they might take too long. so, i was wondering, just how big can i go with a stock sleeve? +4mm (+0.160in)? that should put me at 243 wich should be good enough for now.

my next question would be what do i do for the piston? i know its gonna be wiseco, but how do i get the p/n? they only show pistons up to +2mm. would i just say "give me a 70mm piston for an 86 suzuki lt230s"? or do they need more specs? i guess they shouldnt though cuz they obviously have the specs to make the other 230 pistons...

 

http://www.wiseco.com/Catalogs/Power...eteCatalog.pdf

Page 85

2mm is as big as they get. The 70mm is the big bore piston.

 

Might as well stick with the next size piston. A cpl cc's isn't going to make much if any difference.

 

66 x 67 = 229.16cc
67 x 67 = 236.27cc
68 x 67 = 243.31cc
69 x 67 = 250.64cc
70 x 67 = 257.88cc
71 x 67 = 265.23cc
72 x 67 = 272.88cc (250S rod only)

Your call.

 

eh i guess ill just go for the 68mm wiseco pk piston kit from denniskirk, its only $170, and i can get the cylinder machined for $55.

243 should be plenty

 

No $125 for 22 more cc?

If your rod bearings are loose it will smoke again after a summer's worth of riding. Make sure you get a good bore job! Nice n tight!

 

only 125 to go to the 70mm??? (the reason my price was 170 was because it was a kit with a top end gasket set btw)

can i do that with the stock sleeve?

if so, whered you find the piston, and whats the CR on it?

oh and my crank was just re-done last year by vinces cycle, so i think i should be good with the bearings...

 

No, its 125 more than you're paying. 125 + 55 + 170 = 350

 

oh, i get it.

 

if you check with your local engine boring shop they may be able to go larger and get you a custom piston cheaper than a wiseco kit. i got a 250x bored once and could only go 2mm over unless getting a special kit. the machine shop i go to had tons of catalogs and the guy there found me a real nice piston set that we put in it. it was even high compression. so then we bumped up to a mild race cam and that thing would really hall