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17 XPT2. AA tunes stage 1,2,and 3. AA adjustable clutch and springs. I have added 700 lbs plus with tires, cage, winch, bumpers. heavy duty axles, a arms, radius rods, tools, parts and so on. I just went from 30s to 32s so I had to take some weight out of the clutch arms and now my belt temps have gone way up. Just smoked my first belt this weekend. I love the way my car is setup so other then not carry my 60 lb spare occasionally I don't want to shave weight. I want to try and keep the 32s. Mostly run high mountain trails medium to fast pace and some high desert runs.
Other then the obvious, shed some weight for both me and my car or go back to 30s what are some options.
Thanks in advance.
 

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Have you eliminated any mechanical issues such as overshifting and improper belt alignment?

I’m in the same boat, just with a 4 seat, been working on a cure for over a year, might be getting close to making progress, but not certain yet.

Even with gear reduction, I still have WOT belt temp issues, it climbs in a hurry to 240, on a steady cruise or slow trails it will run 160, maybe up to 180 on a hot day.... start pushing in high throttle bursts... climbs slowly, still maintains 210 or less... make any sustained WOT runs and it’s just a countdown to 240, which is where I’ve learned to lift at to prevent failure an maintain acceptable belt life.

similar riding, I just do a lot of crawling and slower trails ( zero issues at all there in regards to belt temp, or performance ) in addition to the high speed high desert sections.

I keep you posted with what I find, should have a chance to do some testing this weekend


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Discussion Starter #4
The 17 XPT2 was the 1st of the higher geared XPTs. The 17 XPT4 kept the 16 model gearing but the 2 seater has the 18+ gear set. What about a trans gear reduction.
Joe, that sounds like a great idea. What Gears would you recommend? Is there a certain models gears I should be looking at or something else.
Thank you Joe! I was hoping you would chime in on this one.
I thought about portals but I don't know how they will hold up to high speed and I might be loosing too much top end speed then too. I figured portals are more for rock crawling and I do very little of that.

Also, just got off the phone with a friend and he is running the same car with identical added weight and tires. He has 5000 miles on his clutch and getting 2k plus out of belts with a stock clutch. I may put my new stock clutch parts back in and see how it does.
 

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Discussion Starter #5
Have you eliminated any mechanical issues such as overshifting and improper belt alignment?

I’m in the same boat, just with a 4 seat, been working on a cure for over a year, might be getting close to making progress, but not certain yet.

Even with gear reduction, I still have WOT belt temp issues, it climbs in a hurry to 240, on a steady cruise or slow trails it will run 160, maybe up to 180 on a hot day.... start pushing in high throttle bursts... climbs slowly, still maintains 210 or less... make any sustained WOT runs and it’s just a countdown to 240, which is where I’ve learned to lift at to prevent failure an maintain acceptable belt life.

similar riding, I just do a lot of crawling and slower trails ( zero issues at all there in regards to belt temp, or performance ) in addition to the high speed high desert sections.

I keep you posted with what I find, should have a chance to do some testing this weekend


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Thanks RWB. I Checked alignment and its right on and with the marker test my belt is running exactly where it should. I didn't have a problem until I went to 32" tires and took 2 magnets out of the arms. I know by removing weights it doesn't grab the belt as tight and causes slip and heat. I know what caused it I am just hoping there is a fix without going back to 30s. As stated above I am going to put the stock clutch parts back in and see if that helps with heat.
 

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Other than to look cool, why you need the 32" tires? Not being a d!ck, but in all honesty... My v8 trucks i've had didn't even run 32s.
 

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Keep me posted with your results, I have pondered that as well.

You could also try putting those weights back in, and see what it does to your temps without regards to the peak rpm drop as well, just to see if your riding that fine line with the belt slipping, or if you need more than just that.

I think we’re on the verge of the limits of the stock clutches with all things considered, but hopefully there’s still a solution... if not... Airdam is the only consistent cure I’ve heard of, and that is primarily from the switch to a roller secondary and much better airflow


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I'm defo not clutch guy but typically you want to add weight for larger tires to make it engage quicker.

Gears - The ACE 325 set would give you a 13% reduction across all gears. (#3235450 48T Stage 2 Gear #3235451 25T Reverse Gear Shaft). The 17 XPT2 has a multi-piece input shaft so those two gears are all you need. There are multiple combinations available but if you're not going larger than 32s there is no real need to reduce any further. That would put you ~3% lower than stock gearing.

Edited to add this because I forgot you asked about portals.
Portals, portals, portals - been there done that and if I rode strictly west coast rocks I'd run them again. However, they add a LOT of unsprung weight, add width, and we have these pesky things on the east coast called trees where being too wide become an issue. They will also increase the turning radius because of the width. If the width does not bother you there are numerous upsides. SATV offers a 15% kit works well for smaller tires. It also gives you ground clearance right where it's needed and the added width makes the machine more stable. But, plan on upgrading the entire front suspension - HD ball joint, Tie-rods, HD rack, etc because of the additional weight & stress.


Personally, the type of riding you describe I'd go with a reduction in the trans over portals.
 

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Other than to look cool, why you need the 32" tires? Not being a d!ck, but in all honesty... My v8 trucks i've had didn't even run 32s.
Nothing to do with looking cool, the ride is much better, increased sidewall for flex, and larger tires roll over obstacles easier. That's why I run 35s :grin
Going back to 30s sounds a lot cheaper than this gearing and misc upgrades to add portals... more money for beer.
 

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Other than to look cool, why you need the 32" tires? Not being a d!ck, but in all honesty... My v8 trucks i've had didn't even run 32s.


Lol... did any of us really NEED a rzr to begin with?

But as Joe pointed out, there’s many reasons, looking cool isn’t anywhere near the top of the list for those of use that take on larger rocks and other obstacles


-Give it a second... it had to go to space and back first ( Sent from the lifeline that is my iPhone XS Max )
 

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Discussion Starter #12
Other than to look cool, why you need the 32" tires? Not being a d!ck, but in all honesty... My v8 trucks i've had didn't even run 32s.
Nothing to do with looking cool, the ride is much better, increased sidewall for flex, and larger tires roll over obstacles easier. That's why I run 35s :grin
Going back to 30s sounds a lot cheaper than this gearing and misc upgrades to add portals... more money for beer.
Once you run 32s you will not want to go back, kind of like DD's.
Oh wait. That's the other forum.
 

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Portals, Portals, Portals! They're cure for the common cold, and big tires. Lol! :big-grin
The 15% gear reduction is perfect for maintaining your top end speeds, getting 4" of lift, turning big tires with ease, and saving your driveline.

Cons: They make you 8" wider, you'll probably want better ball joints, a frame stiffener, and some HD tie rods.

@RZR_Joe Come back to the dark side!!! Lol! :wink I can see it now...8" portals, 45% reduction, and 44"s. Never mind those Carolina pines. You can just knock them down and drag them with you.
 

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Portals, Portals, Portals! They're cure for the common cold, and big tires. Lol! :big-grin
The 15% gear reduction is perfect for maintaining your top end speeds, getting 4" of lift, turning big tires with ease, and saving your driveline.

Cons: They make you 8" wider, you'll probably want better ball joints, a frame stiffener, and some HD tie rods.

@RZR_Joe Come back to the dark side!!! Lol! :wink I can see it now...8" portals, 45% reduction, and 44"s. Never mind those Carolina pines. You can just knock them down and drag them with you.
I have thought long and hard but those pesky trees :grin

Already @57% in low, another 15% and I'll have to go to 40s :devil Hmmmm.....40s :notworthy:
 

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Portals definitely are not for everyone. I do think that the OP’s driving style that he describes, gear reduction would be the best bet. My driving style is totally opposite (constantly slow and no trees). Portals were the best option for me. With the HLE, 4” portals (45%) and 34” tires I have low/lower and love it.


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