2017 Ranger 900xp cylinder install in vehicle - RangerForums.net - Polaris Ranger Forum
Polaris Ranger XP900 Discussions for the all new Polaris Ranger XP900

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post #1 of 4 Old 04-11-2019, 12:27 PM Thread Starter
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2017 Ranger 900xp cylinder install in vehicle

I had the throttle body adapter go bad on one cylinder -- the rubber connector between the intake plenum and the cylinder head. Sucked sand and water without knowing it and now I need to replace the cylinders, one piston assy. Most of what I Google is related specifically to the RZR's. There is a few who mention they can do RZR in vehicle but it is difficult and nobody specifically mentions Ranger. So, has anybody had any luck installing the cylinder in the vehicle? I know it says to pull motor, split case, etc....but I have to ask. Looks like there is a lot of room, but I can see the skirt design being a problem. Anybody?

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post #2 of 4 Old 04-14-2019, 06:35 PM
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Common Issue

FYI: Buddy just bought a used 900 and his engine had the same leak around those rubber seals. The tech helping him sprayed a couple shots of carb cleaner on the base of them and the engine quit at idle. That told him the rubber was gone. They installed two new ones and within a couple weeks, another one had let go because it was not seated properly before tightening down. His suggestion was using a small amount of never-hard Permatex to ensure the rubber bit stays sealed with the plenum.



I checked and mine are good but you all might want to try that. It would suck to religiously swap air filters only to have garbage going in your engine through a bad plenum seal.
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post #3 of 4 Old 04-15-2019, 07:56 AM Thread Starter
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I did it this weekend....got the cylinder on without pulling engine. If you are mechanically inclined working on your own polaris then "maybe". Although I got lucky it is not the kind of thing I would do for somebody else because it is just too risky.
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post #4 of 4 Old 04-15-2019, 09:17 AM
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Thanks for the information. That saves a lot of work. Good to know it can be done that way.


2017 Ranger 900 XP
2015 Ace 570
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