dirtbikr99
Member
- Nov 21, 2002
- 180
- 0
I have a 1999 cr250. (old but I love it) Currently Its stock bore 66.4 I've had a ported, and cut the head to raise the compression a little. I love the motor right now. However, I've come across and amazing deal on a stroked crank 74mm.
1. Is it possible to just put the stroked crank in (check to make sure it clears the cases of course) and put a 2mm spacer plate under the cylinder? Will this have any effect on the porting, timing or compression?
2. What would be the final displacement with a stock bore and a 74 mm crank?
Thank you in advance to whoever can answer these questions for me!
1. Is it possible to just put the stroked crank in (check to make sure it clears the cases of course) and put a 2mm spacer plate under the cylinder? Will this have any effect on the porting, timing or compression?
2. What would be the final displacement with a stock bore and a 74 mm crank?
Thank you in advance to whoever can answer these questions for me!
