XP4 1000 clutching issues, need help - Polaris RZR Forum - RZR Forums.net
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post #1 of 14 Old August 23rd, 2019, 01:56 PM Thread Starter
 
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XP4 1000 clutching issues, need help

So I just recently bought a lightly used '17 XP4 1000 which came with a lot of goodies and some nice 30" Mongrels. I also was given the factory BH wheels/tires which is nice but not part of this issue.
Ever since having it I've felt like something was just not right with the clutch or belt grip but I don't know I'm not a Pro but I suspected maybe it just needed a clutch kit as I'm in Utah and at a high elevation plus running 30s. So after a lot of research and internal debate I decided to pull the trigger on a Dalton Kit which I installed earlier this week. The kit went in smooth and I was all kinds of excited for my first ride in my newly transformed RZR only to have the air sucked clean out of my lungs as what I ended up with was/is actually a slower RZR.
So you may ask did I install the correct weight combination, well I set it up according to the sheet provided and I have confirmed with Todd that what I did was not wrong. So based on what he asked me to do I performed a few test runs up to 70mph to see where the shift phase was and where the RPMs ended up. Based on those results he concluded something else is going on that is not related to the kit and he asked me to put it back to stock and run same test. So I did just that and here's a short clip of that test
, as you can see at 70 MPH I'm hitting 8650 RPM which I guess is way to high and just confirms what Todd said regarding the issue being something else.
Well unfortunately I'm not a CVT pro and I have absolutely no clue where to even look next, all the parts and pieces seem to be fine with no damage or weird behavior. What I do know is right now the top speed from a run I just did today with the Dalton Kit installed maxed out at 67 MPH and the RPMs actually hit 8800 for a moment then settled back down to 8600ish...
I've also done a belt travel test in the secondary, attaching pics, too me it looks fine, this was run WFO!
I'm really hoping some folks here with more knowledge than me can help me figure this out, thanks!
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post #2 of 14 Old August 23rd, 2019, 03:20 PM
 
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Re: XP4 1000 clutching issues, need help

I dont think 8600 is bad at 70 MPH ....but it seems to be lazy getting up to RPM.
Can you post a video of the same run with the Dalton kit?
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post #3 of 14 Old August 23rd, 2019, 04:20 PM
 
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Did you check for binding on the primary?
Take cover off and remove spring then reinstall cover and slide clutch in and out.
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post #4 of 14 Old August 23rd, 2019, 04:38 PM Thread Starter
 
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Re: XP4 1000 clutching issues, need help

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Originally Posted by Max H View Post
I dont think 8600 is bad at 70 MPH ....but it seems to be lazy getting up to RPM.
Can you post a video of the same run with the Dalton kit?
Ugh, lol... I just finished taking the Dalton kit out after doing a run with it in and actually ended up hitting 8800 RPM and max speed was 67 MPH before it just flattened out.
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post #5 of 14 Old August 23rd, 2019, 04:39 PM Thread Starter
 
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Re: XP4 1000 clutching issues, need help

Quote:
Originally Posted by AdrenalineJunky View Post
Did you check for binding on the primary?
Take cover off and remove spring then reinstall cover and slide clutch in and out.
Yea I've checked all that and I can't see or feel any binding, it all moves free and smoothly..
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post #6 of 14 Old August 23rd, 2019, 04:50 PM
 
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Re: XP4 1000 clutching issues, need help

Welcome to clutching...It is not fun ,and takes to much time ...but to give that Dalton kit a fare shake it is going to take some time and elbow grease ...I am sure you know that....but that is the name of the game with performance improvements , motor mods ..ecu flash or ...especially on a CVT clutch ...look forward to hearing your findings ..Thanks
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post #7 of 14 Old August 23rd, 2019, 05:01 PM Thread Starter
 
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Re: XP4 1000 clutching issues, need help

One major issue I have is that I don't have anything to compare this too so I'm not sure what to look for.
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post #8 of 14 Old August 23rd, 2019, 05:11 PM
 
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Re: XP4 1000 clutching issues, need help

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Originally Posted by Dirt-junkie View Post
One major issue I have is that I don't have anything to compare this too so I'm not sure what to look for.
I understand that feeling ...but you do have something to compare too if you post your full results ...like you did in your first video ...because you have all the experience of some real quality clutch experts / members of this forum that will give you good advice.
Like anything you will have to take each reply for what it is worth ...but you will get the help you need if you post in a quality way like you have already done.
You said you are running at high altitude .. what is your altitude ?...Lots of people are here to help but it is never fast enough when you are trying to gett'er done ...I understand

Also the videos will give you the info needed to compare ..on your own later
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post #9 of 14 Old August 23rd, 2019, 06:01 PM Thread Starter
 
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Re: XP4 1000 clutching issues, need help

Ok I'll put the Dalton back in tomorrow and do another WFO run to get those results..
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post #10 of 14 Old August 23rd, 2019, 07:11 PM
 
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What condition is the belt in; new or used? Any glazing on the clutch surfaces? Any signs of your spider backing off? There’s quite a few issues that can cause what you are describing. But imo the RPMs look to be in the ball park for the elevation.

Another thing, if you are seeing rpm flare as you say in your initial post where it flashed to 8800 then settled down to 8600 you’ve got slippage going on somewhere.

We can break it
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post #11 of 14 Old August 23rd, 2019, 07:32 PM Thread Starter
 
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Re: XP4 1000 clutching issues, need help

Quote:
Originally Posted by American BadAzz View Post
What condition is the belt in; new or used? Any glazing on the clutch surfaces? Any signs of your spider backing off? There’s quite a few issues that can cause what you are describing. But imo the RPMs look to be in the ball park for the elevation.

Another thing, if you are seeing rpm flare as you say in your initial post where it flashed to 8800 then settled down to 8600 you’ve got slippage going on somewhere.
No glazing and belt is brand new OEM belt.. As for the spider backing off, I'd say I have no clue what that would even look like but to me all parts look fine, only 1500 miles on car.

I've also got a new vid that I'm uploading now with the Dalton kit reinstalled running WFO up to top speed which ended at 67MPH and I bounced off 8850 for a second then it fell off to 8600 and just held there.
Sorry about the nostril shot ---- you'll see what I mean!

Last edited by Dirt-junkie; August 23rd, 2019 at 08:43 PM.
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post #12 of 14 Old August 24th, 2019, 05:30 AM
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Re: XP4 1000 clutching issues, need help

That picture of the markings in the secondary do not look right, I don't have a good view though, almost looks like it is not going down far enough in it on the back side

Also it does not appear it is going down far enough on front side, still shiny at bottom. The front should be dirty nearly all the way down.

What washer or washers do you have in the primary in stock form and dalton?

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post #13 of 14 Old August 24th, 2019, 07:04 AM Thread Starter
 
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Re: XP4 1000 clutching issues, need help

Going out for a ride today with the Dalton installed to see how it does, will provide more feedback later today.. Swapping this all out takes less than an hour at this point so it's not big deal to swap it back to stock for more testing but I need to know what to test and exactly what to look for.
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post #14 of 14 Old August 24th, 2019, 03:11 PM Thread Starter
 
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Re: XP4 1000 clutching issues, need help

So just got back from a nice 50ish mile ride today and can honestly say that I could barely notice any real distinguishable difference between stock setup and this Dalton. I would say that maybe there was a little more pull off the bottom but that is really hard to say for sure and really could just be from the new belt, I dunno....
Anyhow, so far not that impressed by this but I am really quite convinced it's the car and not the Dalton kit and until I figure out WTF is going on I guess I just won't know. I've got about 3 more weeks to get this worked out before my 30 day money back time runs out though and if it can't get worked out then I for sure will want my $$ back..
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