Polaris clutch change over
- Thread starter sledheadjake
- Start date
Would like to take a stab, or guess.
For what it's worth, what is your RPM on that 910? I am assuming 8-8200?
Gearing is pretty low, I know you mentioned a 3" 162, but a 2.48:1 gear ratio might be letting you run out of secondary too quickly. More finish angle, and while your at it a muli with more initial angle? Or, if you have a set of gears that are higher, like say 61/59 (2.17) put in and give it a go.... without making any other changes.
Or, more tip weight?
For what it's worth, what is your RPM on that 910? I am assuming 8-8200?
Gearing is pretty low, I know you mentioned a 3" 162, but a 2.48:1 gear ratio might be letting you run out of secondary too quickly. More finish angle, and while your at it a muli with more initial angle? Or, if you have a set of gears that are higher, like say 61/59 (2.17) put in and give it a go.... without making any other changes.
Or, more tip weight?
Could be wrong, but I think the 2009 gearing was 67/53 (1.77). I know my M7 gearing was 67/53, which is WAY too tall for a mountain sled. Went down to 65/55 (1.9) which is the 2010 and 2011, if I remember correctly. This still was a bit too tall. Note, ported, compression, twin piped 800 BB. 8200 rpm.
comes with the tool
Have you guys done any baselines on turbo M8's yet?
Yes we have.
What have you tested? How much boost? How they holding up? ETC? Have over 2500 on my stock cat clutch on my 09 pgt m8...I dont think Im going to try and get anymore out of her.
baselines were finished last season on turbo 7's and 8's. 3200 feet and 6-9000'. 8# , 12# and 14# set ups-we prefer the SLP MTX in a p85 with a turbo but the choice of weight is yours to decide.
Durability is not an issue-turbo or otherwise, unless you fall behind on your clutch maintenance.
Curt
Durability is not an issue-turbo or otherwise, unless you fall behind on your clutch maintenance.
Curt
C
how are these holding up?
Ok, looking at $1000 initial cost plus the cost of rebuilds.
Approx how many miles between replacing various parts on a stock 2010 M8 and what is the cost?
Maintenance between rides currently consists of blowing out the clutches and non-disassembly visual inspection.
Approx how many miles between replacing various parts on a stock 2010 M8 and what is the cost?
Maintenance between rides currently consists of blowing out the clutches and non-disassembly visual inspection.
T
On my 09 M8 I had to replace pins and bushings after 750 miles, cat does not make a kit for the new clutches. Cat clutches, for the most part, are not rebuildable....accept for the spring and weights, there is nothing else that can be replaced. There is/are people/companies that are rebuilding them and supplying aftermarket parts, but there's more to it than just clutch parts issue, for me it was the potential failure issue that I didn't like.
After converting to a P-85 I found a number of things the clutch did that the Cat clutch didn't do, besides loosing a couple of pounds of rotating mass....better engagement, easier to feather, better holdback coming downhill to name a few. The clutch is rebuildable and parts are available at a local dealer.
After converting to a P-85 I found a number of things the clutch did that the Cat clutch didn't do, besides loosing a couple of pounds of rotating mass....better engagement, easier to feather, better holdback coming downhill to name a few. The clutch is rebuildable and parts are available at a local dealer.
I just noticed this, the XS809 is a Polaris belt and is a little larger than the 046 cat belt you should be running.......
What weights and spring rate would you recommend on your setup for 8000-12000 feet, 8-12 psi of boost?
165/310 spring, 68-74 gram mtx weights. the specifics of loading the weight with mass would depend on the turbo brand and where it makes best power. As a general rule, we'd start with 2-3 grams in the center for a smaller turbo that spools quick (or an Aerocharger) and we'd shift that mass out towards the tip for the bigger automotive turbo set ups.
Again, more details would be needed to be more specific but that should give you a general idea.
Curt
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D
Have you got a kit out for the M1000 yet?
M
Why? Get the spider shims set-up correctly and add one of these for alot less $$ and you'll have no clutch worries. No I don't have any connection to Lonn other than using his adjustable weights since '98.
http://www.thunderproducts.com/911 Clutch Cover.htm
That is a great product--we've used them for years, back when they were still built by Duane @ HiTech but I'm missing how it will solve the spider cracking issues many of the modern cat primaries have shown us?
Also, If someone can teach me how to remove a cat spider from a USED clutch without destroying the threads 80% of the time I'm all ears! The success ratio has been very low with every trick I can think up.
A NEW (unused) cat primary will typically come apart for spider shimming nicely....but after the engine has hammered away at it a while....good luck!
Hmmmm...maybe Cat didn't supply rebuild parts for these clutches because they they didn't intend them to be disassembled...
Curt
The p85 conversion from Fasttrax is handsdown the best mod i've done to my 06 m7 and I've done ever mod you can think of short of a turbo. The clutch engages way smoother,pulls much harder, runs a lot cooler and best of all hasn't blow up like three of my other cat clutches have. And here is another thing, you know how so many of you guys have trenching problems climbing and boondocking thinking it's your track or suspension, it's not it's your clutching. I have tried multiple tracks and have a timbersled rear susp. with with very little success eliminating the trenching problem no matter how I set it up. I put the p85 on with a properly matched secondary setup (this is key) trenching went away and the sled rips on climbs building more track speed and momentum the higher you climb, and it's way better in the trees braaaping around because it doesn't hammer the track. My buddy has a m7 with the exact same mods I have (except for the clutch) and there is no comparison between the two. He will be buying one as soon as he get's the $$$. Again best 1000 bucks I spent on my sled!! Give Kurt a call these guys know there stuff and are super easy to work with, they got my set up spot on the first time and are there to answer any ? you might have.
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