• I am getting worn out moving your "For sale" threads, including loosely veiled sales pitches for "How much is it worth) or Wanted to buy to the swapmeet.

    I will no longer be moving them for you as I have been in the past.

    Some days are 20 per day.

    If I see it, it will get deleted.

    I try to help you...please try to help me.

    Thanks.
  • I've received emails and PM's asking me about "Group Buys" and promotions.

    A Group Buy here on SnoWestOnline.com would be a situation where a normal member (non vendor or mfg) personally collects orders from other members. That member then uses those orders to negotiate a better price with the Vendor/Mfg for HIS/HER "Group" of buyers.

    Here is an example of a viable "Group Buy"

    http://www.snowestonline.com/forum/showthread.php?t=269222

    A promotion that has the words "Group Buy" in the title is still a promotion, and from the rules that were handed down to me by Harris Publications is that non-advertisers cannot run promotions or open sales programs on the forums outside of the swapmeet.

    If a members wants to become a group buy manager, maintain a thread and collect the funds and negotiate a group buy... as a member, you are welcome to do that as long as you are not attached to the business of the vendor or Mfg.

    If you are a vendor/MFG and you want to offer an EXCLUSIVE "SnoWestOnline ONLY" promotion that is exclusive to snowest readers, please contact me and you'll be able to put it up in the Polaris forums.

    Also, before any vendors/mfgs get all "riled up" over this know that the moderators are strictly volunteers and do not receive a dime from any advertising $$ spent on this site.

    As ALWAYS, since DAY ONE of me becoming a moderator, I have pioneered, supported and encouraged vendors and mfgs in getting the word out to our readers with "New Product Announcements.

    Have a great season.

    From this point on, all vendors/mfg's promoting Pre-Season tiered sales programs, in the Polaris Forums, that are not paid advertisers will be appropriately moved to the swapmeet section of the forums.

    MH

ONE CYLINDER, HELP?!

Jan 8, 2019
45
2
8
Nome, AK
So... Acquired a 2010 Polaris Rush Pro R 600 with bad crank, got a 2012 motor sent up here to remote AK. Did the swap, new SPI pistons & one cylinder was bad, compression tested it to 50-90psi, other cyl 120... sent the bad one to Darby's Performance in Fairbanks who returned me a used/honed cylinder @ 100psi. $280 later - Terrible service, no offense to anyone.
Now... my new/bad 100psi cylinder runs and my good 120psi cylinder doesn't... wtf?
all electronics are upgraded except for TPS (waiting on 5v parts to reset) & ECU. adjusted the throttle cable last night, switched fuel relay back n forth, got spark, fuel, oil, and air.
When I start it it idles at 1400rpm +-200, 32*f+ it idles up to 2400rpm and boggs down if I WOT
Any ideas and/or experience would be greatly appreciated, please help.
 

NapaMatt

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Did you go with new injectors too??

New fuel filter?

With a "New" Engine ... You should be getting 125psi IN Both Holes!! not 100 in one and 125 in the other.. Not going to run well or long that way
 
Jan 8, 2019
45
2
8
Nome, AK
yeah it was a used motor w/ 2k miles. was a lemon, bad cyl, got a $250 refund, switched out my core cyl for remanned (100psi max, called the shop back w no good customer service).
switched from 2010 4 injector to a 2012 dual injector (just cleaned em), new fuel filter SPI, and ECU is 2012.
running 50:1 for motor break in while oil line bubbles clear, gonna try to thin that ratio down with some fresh fuel. Spark plugs new but very wet. might even switch the injectors around just to make sure the dead cylinder doesnt follow, ie bad injector. if injectors are good I would like to say maybe the TPS sensor needs tune?
just odd that my (old) good 120psi cyl is the bad cyl now, and my 100 psi cyl is the current power house.
Any input or ideas?
 
Jan 8, 2019
45
2
8
Nome, AK
I'll get a new cyl asap (payday) but when I talked to the shop he said he stands by his product, that its my pistons (brand new). Naw, he overbored it past spec. Anyways, only thing he can do is let me send it back and make me pay the extra $100 for a rechromed 125psi. just sucks cuz I helicoiled my fuel rail inlet and living where I do is expensive to fly a cyl from nome to fairbanks. $30 each way and still takes a week turn around.
 
Jan 8, 2019
45
2
8
Nome, AK
Yeah a 125psi cyl would be 100% primal, was my goal but I got shafted and now, naturally I'm skeptical when it comes to his new deal with a re-chrome for $100 more w trade and $60 shipping. I hope he likes a nice helicoil job lol, stronger threads.
Far as I know my new fuel system hasn't been this good since factory, starts 2nd pull (even on 1 cyl). Unfortunately, I don't have a fuel pressure gauge... though I could prolly make one for cheap.
 
Last edited:
Jan 8, 2019
45
2
8
Nome, AK
Yeah reeds are brand new Mototassinari 3r's and the intake boot looked fine last time I checked... prolly check again here soon, atleast when I get paid and pull the cylinder off - hopefully for the last time.
I'll prolly change out and dilute the gas/oil mix tonight, make sure the 50:1 gas + (sparse/bubbled) oil injection isn't too rich for that cylinder's spark plug. Brand new bpr9es's get pretty wet pretty fast.
 
Jan 8, 2019
45
2
8
Nome, AK
Been going through my manual... "Troubleshooting/ENG Starts - Won't Idle/Stalls" page 4.54 it asks,
"Is the eng mechanically sound? Perform a compression check on both cylinders. Are the results within 10% of each other?"

MAG 120psi x 0.10%= 12psi MAX Allowed Difference
PTO 100psi
-------------
20psi/18-20% Real Difference


... Gotta be my (Remanned) PTO cylinder being bad, just cant fathom why my PTO is the power cylinder and MAG is bad... hope the PTO isn't shocking the crank every time it fires (perhaps early).
 
Last edited:
Jan 8, 2019
45
2
8
Nome, AK
Pulled the cylinder and measured the bore, Polaris Manual specifies a bore limit of .002" or .051mm.
Measurements:

OEM 77. 25mm

Top: X 77.1144. Y 77.1779
Over by 0.1356. 0.0721

Middle: X 77.1271 Y 77.1779
Over by 0.1229.

Bottom: X 77.2033 Y 77.2287
Over by 0.0467. 0.0213

Fortunately now that I have the math of this over-hone the owner of Fairbanks Darby's (where I got the cylinder) is now willing to work with me. Might get free shipping and a new rechrome cylinder.
 
Last edited:
Jan 8, 2019
45
2
8
Nome, AK
OK Welp... Got some Pro X pistons (originally planned for Wisecos but the shop never shipped em out and, yeah), two new cylinders, and holding 130psi in each. Running on two cylinders thank God.
BUT, Det code still shows, and it idled a couple healthy times, but bogged and died with throttle. Since then I've prolly ripped the cord a few hundred times with no start... without a code reader I'm thinking the TPS sensor is the fault, what would you guys think?
Everything is plugged in...
 
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