Current originals are 10-62. What will be the effects of changing to 10-64? Lower acceleration but a bit higher mid and top end?
Want to make sure we are going in the right direction. Thanks
Gotta go.
Full Version: Weight question
Thinking about changing weights in an 06 600 HO
Current originals are 10-62. What will be the effects of changing to 10-64? Lower acceleration but a bit higher mid and top end?
Want to make sure we are going in the right direction. Thanks Gotta go.
Current originals are 10-62. What will be the effects of changing to 10-64? Lower acceleration but a bit higher mid and top end?
Want to make sure we are going in the right direction. Thanks
Gotta go.
What kind of RPM are you pulling?If your running 8200 RPM you should nt need to run a heavier weight
I just made the switch to 10-64's on my 07 IQ 600CFI and put on 90 miles. 10-64's reduced engagement and peak RPM by generally 200 RPM using a stock primary spring. 3,500 engagement, flashed to 8,100, back to 7850, climbed quickly back to 8,000. It seems to pull harder through to 80 MPH. I have not had the opportunity for a long run on hard pack to see if the RPMs will creep back up to max. power 8250. I did notice a lower cruise RPM which is a plus for MPG.
Dyno sheet:
http://www.amsnow.com/sno/default.aspx?c=a&id=2754
My goal was more top speed, hoping that more primary weight would overcome the secondary better on top end. The jury is still out.
Dyno sheet:
http://www.amsnow.com/sno/default.aspx?c=a&id=2754
My goal was more top speed, hoping that more primary weight would overcome the secondary better on top end. The jury is still out.
QUOTE(polcat @ Dec 14 2007, 11:33 AM) 
I just made the switch to 10-64's on my 07 IQ 600CFI and put on 90 miles. 10-64's reduced engagement and peak RPM by generally 200 RPM using a stock primary spring. 3,500 engagement, flashed to 8,100, back to 7850, climbed quickly back to 8,000. It seems to pull harder through to 80 MPH. I have not had the opportunity for a long run on hard pack to see if the RPMs will creep back up to max. power 8250. I did notice a lower cruise RPM which is a plus for MPG.
Dyno sheet:
http://www.amsnow.com/sno/default.aspx?c=a&id=2754
My goal was more top speed, hoping that more primary weight would overcome the secondary better on top end. The jury is still out.
Dyno sheet:
http://www.amsnow.com/sno/default.aspx?c=a&id=2754
My goal was more top speed, hoping that more primary weight would overcome the secondary better on top end. The jury is still out.
AMSnow link is members only.
Going to 10-64 from a 10-62 will make your clutches shift quicker. This usually lowers your RPMs. This may or may not increase your low, mid and top end.
Don't get caught up in the RPM deal. Thier is a lot of different reasons. (tach accuracy, pipe heat vs. time (esp. on the newer Polaris 600 pipes) and the list goes on and on) Tune your sled for performance not some magical RPM number that may or MAY NOT give you the best performance. This is the best advice I can give you.
Try the weights. If it's quicker use them. If not put the others back in. That will really be the only way to tell for sure.
Don't get caught up in the RPM deal. Thier is a lot of different reasons. (tach accuracy, pipe heat vs. time (esp. on the newer Polaris 600 pipes) and the list goes on and on) Tune your sled for performance not some magical RPM number that may or MAY NOT give you the best performance. This is the best advice I can give you.
Try the weights. If it's quicker use them. If not put the others back in. That will really be the only way to tell for sure.
QUOTE(Goobsdaddy @ Dec 13 2007, 08:09 PM)
Thinking about changing weights in an 06 600 HO
Current originals are 10-62. What will be the effects of changing to 10-64? Lower acceleration but a bit higher mid and top end?
Want to make sure we are going in the right direction. Thanks Gotta go.
Current originals are 10-62. What will be the effects of changing to 10-64? Lower acceleration but a bit higher mid and top end?
Want to make sure we are going in the right direction. Thanks
Gotta go.QUOTE(polcat @ Dec 14 2007, 11:33 AM)
I just made the switch to 10-64's on my 07 IQ 600CFI and put on 90 miles. 10-64's reduced engagement and peak RPM by generally 200 RPM using a stock primary spring. 3,500 engagement, flashed to 8,100, back to 7850, climbed quickly back to 8,000. It seems to pull harder through to 80 MPH. I have not had the opportunity for a long run on hard pack to see if the RPMs will creep back up to max. power 8250. I did notice a lower cruise RPM which is a plus for MPG.
Dyno sheet:
http://www.amsnow.com/sno/default.aspx?c=a&id=2754
My goal was more top speed, hoping that more primary weight would overcome the secondary better on top end. The jury is still out.
Dyno sheet:
http://www.amsnow.com/sno/default.aspx?c=a&id=2754
My goal was more top speed, hoping that more primary weight would overcome the secondary better on top end. The jury is still out.
Update.
I had the 08 CFI reflash done and finally had a chance to get some high speed runs in with the 10-64 weights. 7,900 RPM is all she'll pull at a best 96 MPH with pretty good traction on the lake with 96 studs (approx. 25 degrees out). After I get a better gauge on MPG next week, I plan to reinstall the originals to gain back the lost 300 RPM and see what the effect is.
I wouldn't spend the money for 64 gram weights. If you have some available, try them but you will likely find your '06 Fusion 600 performs better with 62 gram weights. After experimentation with clutch springs and weight combinations I got better performance from the stock clutch weights. The '07 600 CFIs have more horsepower than our '06 600s so they'll get different results than we will.
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