^^^BINGO
and you will be back to trying to get pistons just like the 910 or the 975, five years out no support.
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Carl's Cycle 900 Big Bore Short Block for Sale
- Thread starter Carls Cycle
- Start date
^^^BINGO
and you will be back to trying to get pistons just like the 910 or the 975, five years out no support.
Strange, that must have been the carb'd 860? The CFI 860 (I have) uses the stock crank (if I recall correctly), ported top case, custom cast cylinders, custom Wiseco pistons and rings (which I just ordered a set and put them in to freshen up the top end), stock wristpin bearings. Custom exhaust valves. Mostly stock gaskets, but I ordered all the top end parts and gaskets from them just to reduce the hassle.
I will be the first to admit I would not have dropped the coin on a brand new Carls motor and/or kit for the Dragon. I just don't want to have that much money into a sled when it is unlikely I will ever recoup much of it. Love the 860 torque though. Picking up the Dragon I have for the price I did was definitely worth it for the years I have had it. But if I knew I would be unable to get parts in another year or two the sled would be down the road while it still has a little added value... however if I am right about the custom vs. standard parts on my motor, as long as I don't completely destroy a cylinder and can get pistons, I should be good indefinitely.
Oops was gonna edit my post and accidentally deleted it. Anyway yes in my situation it was a carbed 860 built off the 600. Custom polaris race shop crank. They don't build the crank anymore and I tried having it rebuilt but carls did tell me that when they press them apart you can never get them lined back up again. JJ machinery tried and tried then called me and confirmed what carls had said. You are right though as long as you don't destroy a cylinder on your CFI 860 then you should be ok. 910 motors are the same but have stud bolt problems and you can't get cylinder studs anymore. The carbed 860 was one of the best running N/A motor I have ever had though. For some reason they ran better than the CFI 860
P
P_Ray3040
Member
I have a 14 with a carls cycle 900 and you couldn't pay me to own another one. I developed a bog at 7300 rpm after the first few rides of the season and changed every single part on the sled thinking it electrical. Me and my brother finally decided to check the ecu. My brother has a 15 with a bikeman 860 which runs the stock ecu with a power commander. We switch ecu's and I put the power commander on and there was no bog. I call carls February 5th and tell them what I did and they said they have never ran a power commander on these kits and wanted to reflash a ecu instead. So I get the new ecu that's been reflashed and my bog has changed to 6800. So to see these posts of them saying you have to have a power commander and a ecu reflash really pisses me off because my sled is unridable *** it sits.
Mine had a bog that was really annoying when I first got it. Called Carls and they told me Ya we have been having a few issues with that but I was already running the reflashed ECU and a PCV. They emailed me a new map for the PCV and the bog went away. Unfortunately you will have to get a PCV but if you wanted maybe try throwing your stock pipe on and see if the bog goes away. I don't know just trying to help. How does it run compared to the bikeman 860? I have heard rumor that the RKT 858 runs better than the 900 but I have never witnessed this personally so just curious
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P_Ray3040
Member
I will have to try the power commander it's just annoying 3 weeks ago they told me they never have ran a power commander on there and now you have to have it to make it run. The 860 to the 900 is hard to say I don't think mine has ran top notch right from the start and I know that my brothers 860 has never had one issue and he's got between 600 and 700 miles on it
your 900 future
http://www.snowest.com/forum/showthread.php?p=3813546#post3813546
now that the axis is out your only a few years out.
http://www.snowest.com/forum/showthread.php?p=3813546#post3813546
now that the axis is out your only a few years out.
Is it possible that maybe the fault lies in your hands on this one? If you don't have a power commander your lucky it still runs. did you buy the kit directly from carls or did you buy it used? They have run a power commander on the 900 from day one. Carls process on building/shipping out 900 kits is dialed, considering they have to modify the cases and flash the ecu. I would find it hard to believe they would send you one without telling you that a power commander was required.
I would say for fine tuning !
Ignition timing map ??
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I'm little behind the times as I didn't realize the newer PCVs could control timing as well as fuel.
I suppose it would give the user the ability to tweak if needed.
RE-FLASHED E.C.U's
I was suggesting that the reason they re-flashed the stock POLARIS E.C.U. is to re-program an entirely different timing curve into the factory E.C.U.
Some of The new DynoJet POWER COMMANDERS do have ignition timing adjustment capability, but my understanding is it's limited, (meaning advancing or retarding timing over that entire range of factory programmed timing curve built into the stock E.C.U.) not as flexible as a stand alone VIPEC.
And/or
If port timing were changed, E.C.U. needed to be re-flashed as the piggyback controllers don't have the capability to alter the fuel timing, only adding/or subtracting fuel
Indy Dan Long Rod motors had their E.C.U.'s re-flashed
I was suggesting that the reason they re-flashed the stock POLARIS E.C.U. is to re-program an entirely different timing curve into the factory E.C.U.
Some of The new DynoJet POWER COMMANDERS do have ignition timing adjustment capability, but my understanding is it's limited, (meaning advancing or retarding timing over that entire range of factory programmed timing curve built into the stock E.C.U.) not as flexible as a stand alone VIPEC.
And/or
If port timing were changed, E.C.U. needed to be re-flashed as the piggyback controllers don't have the capability to alter the fuel timing, only adding/or subtracting fuel
Indy Dan Long Rod motors had their E.C.U.'s re-flashed
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I would guess because every motor is going to run differently, just like turbo kits, very few people can create a map for the ecu and program it, jack happens to be one of them. But, when a 900 kit gets sent to a different state and doesn't run spot on, its a lot easier to make changes via a power commander then it is to send an ecu back to carls.
Greetings Fellas!
As mentioned, altering port timing of the combustion chambers can necessitate a newly timed spark event to reap increased benefits of the hard parts modifications. Though not always essential, altering the Ignition timing as well as fueling can provide more useable/peak power.
The new Dynojet Power Commander V (PN #19-030 for CFI2 Engines and 19-032 for the AXYS) has the ability to alter fuel and timing in piggyback form. We've been doing this for years on Sportbikes, and combined the Fuel/Ignition Control into one box for Twins such as Harley's, RZR's, and even single cylinders like YZF450's. The latest and greatest unit from us did the same and combined fuel and CDI timing control into one box. These new units avail -100%/+250% fuel adjustment, and +/-20* of timing change. So say the stock ECU is requesting 20* of advance at a range, we can ramp that advance +20 to 40* of advance or retard it -20 to 0* (2S engines aren't really usable at 0* advance - but does show the adjustment range). This range should be plenty to encompass any desired shift in timing. As an added benefit, by having control of the fuel and timing, we can raise the stock RevLimit of the sled if you find yourself hitting it occasionally!
It's quite the versatile tuning tool and will unleash some hidden power in your Polaris's!
Thanks guys! Feel free to inquire more about our products anytime. I'm Always happy to help.
~T.J.
As mentioned, altering port timing of the combustion chambers can necessitate a newly timed spark event to reap increased benefits of the hard parts modifications. Though not always essential, altering the Ignition timing as well as fueling can provide more useable/peak power.
The new Dynojet Power Commander V (PN #19-030 for CFI2 Engines and 19-032 for the AXYS) has the ability to alter fuel and timing in piggyback form. We've been doing this for years on Sportbikes, and combined the Fuel/Ignition Control into one box for Twins such as Harley's, RZR's, and even single cylinders like YZF450's. The latest and greatest unit from us did the same and combined fuel and CDI timing control into one box. These new units avail -100%/+250% fuel adjustment, and +/-20* of timing change. So say the stock ECU is requesting 20* of advance at a range, we can ramp that advance +20 to 40* of advance or retard it -20 to 0* (2S engines aren't really usable at 0* advance - but does show the adjustment range). This range should be plenty to encompass any desired shift in timing. As an added benefit, by having control of the fuel and timing, we can raise the stock RevLimit of the sled if you find yourself hitting it occasionally!
It's quite the versatile tuning tool and will unleash some hidden power in your Polaris's!
Thanks guys! Feel free to inquire more about our products anytime. I'm Always happy to help.
~T.J.
Caburators
Carburators are so much Eaiser to tune.
I noticed NASCAR used them to go 500 miles at 200 MPH on a 350 Chevy for years.
Fuel injection , there is fool born every minute.
I need to buy Stock in Power Commander so you FI guys can make me money.
Carburators are so much Eaiser to tune.
I noticed NASCAR used them to go 500 miles at 200 MPH on a 350 Chevy for years.
Fuel injection , there is fool born every minute.
I need to buy Stock in Power Commander so you FI guys can make me money.
yep when you change alt from 4300 to 10k you can just take a half an hour and tune them on the way up and the then again on the way down.
you can do on the fly tuning with other boxes if needed. 2 sec push of the button and you just changed jets
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S
Spaarky
Well-known member
I just bought pistons for my 04 910 last year, no issues.
http://www.thecrankshopvt.com/product_info.php?cPath=21_23&products_id=404
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Same here, no ECU reflash on my IDan LR.
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