I'll start with the sled.
2012 Pro
Avid drop and roll
162x3" 3.0pitch x3
8t 3.0 pitch avid drivers
19-46 gear set
MTNTK 5' tunnel cooler with BRP $28 upgrade
Runs 98* to 104*
Indy Dan long rod
H7, new rings last month after 500mi on engine
Indy Dan light weight crank last month at ring time
Stock pipe and can
Stock reed valves with stuffer removed
Stock ECU
BR9EYA plugs
Center to center is 11.5"
Lead in .020"
Offset .00"
Float .030" out
Primary(stock PRO uncut)
63.3 gram Lightning weights
140-330 primary spring
Secondary
120-200 spring
42-32F ER helix
Gates belt
TRS modified Silber intake manifold and TRS built fuel rail with PII dampers and PII yellow injectors(swapped mag to PTO)
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Is 98-104 to cold for this app? I don't know yet. Seems to handle it just fine compared to the cylinder injector app. Stock form runs to rich at that temp. The additional cooling is great on the trail. May try the old storm, XCR thermostat housing and 125* thermostat.
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Ok, Justin ran a whole tank of fuel through it yesterday. I did not ride it, but I did go for a putt putt ride on my '15
This thing needs fuel, had to run it in eth mode with 91 octane to stop det mode. A Bully Dog may be the answer here.
It is very responsive at every throttle position. I believe it needs more fuel coming back down to idle. It acts lean, high idle speed for a few seconds before settling in at 1900rpm. It may need fuel to puddle in the case to drop back to idle quicker. Remember flat slide carb sleds?
Justin weighs 260# before gear(sorry buddy). Justin's comment was t "it pulls so hard on my arms". Glade did a few climbs on Gardner headwall with it and his comment was "that thing is just stupid".
I am reporting what I witnessed and what they informed me on operating RPM. Historically My set up '15(long legs)would walk away from the '12 in a drag race without a problem. Yesterday that gap was closed up.
huge weight differential between Justin and myself along with the parasitic 3" track.
It will run up to 8300rpm on the trail to the Beartooth Warming Hut.
Operating 8050-8200rpm from there to 10,000'. It spends most of the full throttle time in the 8100-8150 range. Making pulls in the trees and open hillsides. There were many near vertical climbs. The snow ranged from a few inches of new yesterday to deep heavy snow. The east side of the mountain got pounded with snow and the west side received much less.
At Gardner headwall the boys made at least 10 back to back pulls up the face. It's roughly a 1000' altitude change from the bottom to the top. With what I would call a 3/4 mile run. At the top of the climb the rpm range was from 7950(once) to what Justin thought he saw 8200(once). It hung in the 8050 to 8150 on most climbs at WOT. Did we stop and check belt temps? Nope, told Justin to drive it like he stole it. We know it hits 85mph down Gardner headwall on the speedo.
What's that with the 8t drivers?
We took a couple videos of the runs up Gardner, I will see if I can load them.
I believe Polaris needs to move the injectors either into the throttle bodies(as Cat did) or build an injector throttle body manifold.
Would like to get 1000 miles on this setup and then tear it down.
cked
