new cdi for v-force scary thought
#13
Originally posted by: HELIX
The Vforce igniter keeps 28 degrees evn at high speed.It does not fall off at 6500 rpm like the prairie.I have an offset timing key in mine giving it 3 more degrees,along with high comp pistons,still no detonation.
The Vforce igniter keeps 28 degrees evn at high speed.It does not fall off at 6500 rpm like the prairie.I have an offset timing key in mine giving it 3 more degrees,along with high comp pistons,still no detonation.
I agree with Helix, if the V is already at 28 degrees and 32 degrees is said to be the very best for that motor, why wait for a CDI, when a $5.00 key will do the same thing. I'm sure the new CDI will raise the limitor, but is anyone close to the old limitor.
Now the 650 is a different story, we need more advanced timing than a key will give, and I been on the limitor in low gear.
#17
Kawy or Helix
How come Wiseco list's the 650 2mm over piston's as 665 in displacement? If I recall the V is 697? I just want to make sure I order the correct ones. Wiseco part# 4782M08200. Thanks for your help. Also what's involved to install the offset key?
Ken
How come Wiseco list's the 650 2mm over piston's as 665 in displacement? If I recall the V is 697? I just want to make sure I order the correct ones. Wiseco part# 4782M08200. Thanks for your help. Also what's involved to install the offset key?
Ken
#19
Since someone is talking about pistons, does anybody know if a 11:1 compression is available for the 650 in a standard bore. I was also wondering if cams are recommended with this setup, and what kind of performance gains would be expected by the pistons alone, and with the addition of aftermarket cams with the pistons?
Thanks,
Crankdog
Thanks,
Crankdog


