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Thought I'd start a separate page of information specific to the D&D Sno Pro 500/720 as I've just gone through all the legwork and expense and it's fresh in my brain. There were a lot of phone ca
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It was a rebuild, so 135hp+ with fuel and oil injection in the best chassis Cat has ever made - imo. Birch Point was the only company that ever offered an 800 stuffed into this chassis and those
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Great job, and really appreciate you doing the leg work and sharing all this hard-earned info. I suppose the way it sounds, at 3500ish miles, I ought to maybe think about rounding up what I can
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Thought I'd start a separate page of information specific to the D&D Sno Pro 500/720 as I've just gone through all the legwork and expense and it's fresh in my brain. There were a lot of phone calls, emails, shipping and investigation involved so hopefully this helps others down the road.
I plan to update/edit this post over time. Too bad for you HCS and Vertical Scope!
You can no longer (at this time) get pistons or cylinders for this engine from Wiseco or D&D but the guy I worked with is looking into having 720 pistons made again. If you have a 720 and happen to destroy a cylinder skirt (common) private message me and I will provide you with contact information for cylinder repair and pistons. Update 9/4/21 - have contact info for someone that had a small run of 720 pistons made by Wiseco. PM for contact info.
Here's a list of specific parts required to do the top end, miscellaneous parts and additions I did and at this point would suggest.
Also, it's crucial to have the proper Boondocker settings (see below)
Top End
9498P8487-----Forged Pistons 84.87-----Wiseco
3347TD---------Piston Rings--------------Wiseco
S539------------Piston Pins----------------Wiseco
CW22-----------Piston Pin Circlips---------Wiseco
3008-500------Piston Thrust Washers-----Cat
3008-503------Piston Upper Rod Bearing---Cat
3006-423-------Cylinder Base/Case Gasket---Cat
3005-283-A----Power Valve Gaskets----------Cat
3004-260-------Water Manifold Gaskets------Cat
------------------Y-pipe Gaskets (2-Bolt)------Custom Cut Copper
------------------Dome O'Rings (Inner)---------75 Viton Size 153
------------------Dome O’rings (Outer)---------75 Viton Size 49
Add-On's or Suggested
V3112-873C-2----V-Force Reeds
5639-897---------Arctic Cat Scratchers
--------------------Side Panel Venting--------Proven Designs
--------------------Temp Gauge--------------Koso
BR9EIX-------------Spark Plugs--------------NGK
2602-217----------39 Tooth Lower Gear-----Cat
1602-772----------70P Chain----------------Cat
SMA-DPSSR-00-00----Vespel Slides--------Yamaha
Boondocker Settings (per D&D)
2010 - 500/720 Non-Power Valve (without 2011 & up flash)
RPM LO MID HIGH
3000 -01 -04 -05
5000 -03 -06 -06
6700 07 05 -02
7300 10 10 02
7800 15 10 02
8250 28 28 28
8700 45 45 45
Accel -06
Dur 20
Sens 08
2010 - 500/720 Power Valve (without 2011 & up flash)
RPM LO MID HIGH
3000 -03 -04 -05
5000 -03 -08 -08
6700 15 11 00
7300 15 15 02
7800 25 20 02
8200 28 28 28
8700 45 45 45
Accel -06
Dur 20
Sens 08
2011 & UP - 500/720 (or 2010 with reflashed 2011 & up programming)
RPM LO MID HIGH
3000 02 03 10
5000 04 03 08
6700 15 11 00
7300 15 15 02
7800 25 20 02
8200 28 28 28
8700 45 45 45
Accel 10
Dur 10
Sens 08
Boondocker Instructions https://boondocker.com/pages/instructions#NA_Snow_Control_Box
Boondocker Mount http://stores.mountainfithoods.net/fuel-controller-mount-boondocker-box/
Clutching per D&D
2010 SNO PRO 500/720
MAGNAFORCE 53 BASE, PLACE MAGS 3-2-1-1, .030 SHIM, RED PRIMARY, STOCK SECONDARY
Gearing/Secondary Spring/Helix Options
Stock 2010 500
Helix is 40/38 - 0648-805
Spring is Black/Blue 180/260 - 0648-790
20/46 gearing
Belt 0627-047
Stock 2010/2011 SX 600
Helix is 68-48-36/64-48-41 0648-789
Spring is Black/Blue 180/260 - 0648-790
20/46 gearing
Belt 0627-075
Stock 2010/2011 XC 600
Helix is 44/42 0648-809 (Venom # LW420453)
Spring is Black/Orange 180/280 0648-792 (Speedwerx CCH5-J-180-280)
20/39 gearing
Belt 0627-076
Stock Sno Pro 500 clutching information
For 2010 replace stock orange/black pile of shit primary spring with Speedwerx CCH5-D-148-290 Green White
For 2010's update to the 2011-2014 primary weights 0746-826 for smoother engagement
Always run a GOOD 0627-047 Belt
2011-2014 Speedwerx primary spring for lower engagement CCH5-D-122-285 (I prefer the 148-290)
Jackshaft Bearing Timken RA100RRB
https://www.arcticinsider.com/sno-pro-500-part-iv-final-chapter/
https://arcticinsider.com/Images/Article/D&D 720 kit dyno sheet V2.pdf
Edited by Crnr2Crnr