i just pulled the blaster apart and saw that the overbore is 67.25mm. or at least i think so. The last 4 numbers on top of the piston were 6725 so that was my guess. correct me if i'm wrong! If not, would it be fine to go to a 68mm? or does any have any other suggestions. I'm porting the jug in the meantime as well and will have it piped, k&n and hopefully get the carb bored to 28mm. I was also wondering if anyone knew of where i could but a cheap throttle valve since my is toast.
safe overbore?
- Thread starter biglebowski
- Start date
only go one size more than you need to or you loose jug life.
info on bore >http://www.blasterforum.com/engine-13/after-picking-up-your-cylinder-getting-fresh-bore-job-23673/
Bore = 66mm
Storke = 57mm
pi = 3,1416
3,1416 x 6,6 x 6,6 x 5,7 / 4 = 195,00 cc´s
BORE SIZE MM_____OVER_______CC'S_____________+3 CRANK
66.00 - STOCK - 195CC - 205CC
66.25 - .010 - 196CC - 207CC
66.50 - .020- 198CC- 208CC
66.75 - .030 - 199CC - 210CC
67.00 - .040- 201CC - 212CC
67.25 .050 - 202CC - 213CC
67.50 - .060 - 204CC- 215CC
67.75 - .070 - 205CC - 216CC
68.00 - .080- 207CC - 218CC
68.25 - .090- 209CC - 220CC
72.00 - STOCK BB- 232CC - 244CC
72.25 - .010- 234CC- 246CC
72.50 - .020 - 235CC - 248CC
info on bore >http://www.blasterforum.com/engine-13/after-picking-up-your-cylinder-getting-fresh-bore-job-23673/
Bore = 66mm
Storke = 57mm
pi = 3,1416
3,1416 x 6,6 x 6,6 x 5,7 / 4 = 195,00 cc´s
BORE SIZE MM_____OVER_______CC'S_____________+3 CRANK
66.00 - STOCK - 195CC - 205CC
66.25 - .010 - 196CC - 207CC
66.50 - .020- 198CC- 208CC
66.75 - .030 - 199CC - 210CC
67.00 - .040- 201CC - 212CC
67.25 .050 - 202CC - 213CC
67.50 - .060 - 204CC- 215CC
67.75 - .070 - 205CC - 216CC
68.00 - .080- 207CC - 218CC
68.25 - .090- 209CC - 220CC
72.00 - STOCK BB- 232CC - 244CC
72.25 - .010- 234CC- 246CC
72.50 - .020 - 235CC - 248CC
