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Polaris has them :devil

If you are looking for a high lift cam, then no, but if you know what lift, duration and overlap you want, contact megacyclecams.com - they may be able to regrind your cam and lifters to your specs.
 

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Discussion Starter #3
Do you know of anyone that can make a high lift cam profile? I don’t know much about designing something like that.
 

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From research i have done very little info or shops that are hoping up the polaris engines. Lots for the brp engines though
 

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No - I don't know of anyone trying to hop up the Polaris engine - they are designed as utility and are not considered performance engines.
 

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Discussion Starter #6
I’d think there has to be someone. The scrambler is a sport atv. Just seems everyone is making all kind of parts for every other brand/model except sportsman’s and scramblers. ?
 

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It seems a little weird to me that there is virtually NO AFTERMATKET for either the polaris 850 or 1000. Meanwhile, the more complicated V twin CAN-AMs have a few companies that know how to get 120hp or more out of the rotax engines. I don't get it the Polaris Design seems much better but all that is available is exhaust and tuning with claimed +10 ish hp.

The 1000 is "fast enough" but more power is already on my mind after less than a month. I ride in the sand and there is no such thing as too much power. Maybe the 2020 Sportsman and Scrabler 'S' will drive some R&D on the XP chassis.

Polaris might even bring out a hod rod version in a year or two. They have proven that they can make 110hp from the 999cc naturally aspirated RZR 1000. Hopefully they will shoehorn that into an ATV.

Or the 181hp 925cc TURBO engine! Yeah right, I seriously doubt it. That would catch my attention in the XP 'S' machines though. I might even get over the 55" width for the improvements it would bring on the sand.
 

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Discussion Starter #8
I did happen to run across a cam for the xp850, I can’t remember the site though.
 

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Tbcobra, your comment made me wonder if the camshafts interchange.. so I looked it up. According to the parts diagrams, the part #s are the exact same 850 and 1000. So the 850 cam should drop in a 1000. However the cylinder head and intake and exhaust valves are a different part #. It makes me wonder if the 1000 valves are bigger or if the 1000 has better porting or both. I know that the 850 and 1000 have different bore AND stroke so naturally the cases, crankshaft and pistons are different. The cylinder on these motors are automotive style, one piece with the block. I believe that early 850s had replacable iron cylinder liners, but later 850s and all 1000s have nicasil plated cylinders. Also if I remember right the 850 is actually an 850 (850CCs) but the "1000" is really only 952CCs. Interestingly they both have a claimed 11.0:1 compression ratio. Pretty respectable for a "utility engine" and they both run on 87 octane as well( according to my owner's manuals)
 

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Getting some porting work done, if done by a pro and is properly done, can net some gains for you. There are lots of companies out there in the automotive world that will make anything you want if you just give them specs. As to a cam, Mike Jones of Jones Cam Designs can likely grind one for you.....just have to call and talk to him, he'd need an old cam as a pattern to start very likely....but he can do just about anything custom with them.
 

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Interestingly on the yfz450s that I have that's exactly what I'm going to do next for more power. A good port job and bore the carb. On those bikes the stock cams are actually pretty good.
 

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If you want build a 1k quad sell the Scrammy and buy a Renegade. I am not brand loyal. I've loved all the machines I've ever owned to be honest (in different ways, Honda TRX500, AC 500, Suzuki KQ700, Sportsman 500, G1 Renegade 800). Renegades have a massive aftermarket modification market. There are many companies that exist just to modify or build parts for them. That was the deciding factor when I bought my Renegade as I was looking at both the Scrammy and Gade 1K. I have a friend with a Scrammy 1K and I do like it a lot. I does surprise me too that there isn't a bigger better aftermarket for the Polaris 850 and 1000, those are both performance motors IMO not utility. The Scrammy should at least have one it's a great machine.
 
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