01-16-2018, 06:17 PM | #1 |
Join Date: Sep 2016
Posts: 103
|
Boring out 250cc?
I have the crf230 Zong clone, 65.5mm x 66.2mm bore and stroke. There are a number of big bore kits for the CRF230 but I was wondering if anyone has bored out to 67mm and ran the much cheaper off the shelf 67mm piston? it would only be about 233cc but still it a jump over 223cc. It would give it a bit more compression as well but nothing crazy.
|
|
02-22-2018, 11:56 AM | #2 | |
Join Date: May 2016
Posts: 237
|
Quote:
|
|
|
02-22-2018, 12:05 PM | #3 | |
Join Date: Sep 2016
Posts: 103
|
Quote:
Anyway, since posting this I did some investigating and found out that it could easily be upgraded to an off the shelf 67mm piston for a fraction of the cost (under $100) of the kits BUT like many have found that have done the conversion to the CRF230 it leaves the cylinder walls a little thin boring them to 67mm so depending on the type of riding you do it can reduce the longevity of the motor a lot. So you have to decide if it's worth the extra CI for the reduced life of the motor. |
|
|
|
|
|
|