Installed new titanium power valves and switched to interceptor. Rode about 200 miles in the powder and valves already have the black build up. Not as bad as the old ones I took out, but for 200 mile its terrible. Had a friend suggest I turn the oil up to keep them lubricated more. Does this work?

It would seem to me the more you increase, the more deposits would be on the valves. What kind of milage do you get per quart of oil now? Should be about 150 to 175 per quart.

I think more around the 175. I rode 200 miles and put in just over a quart. I'm with you seems like more oil more deposits, but nothing else seems to work.

SWITCH YOUR OIL,TRY SPECTRO SYN-SNO,WORKS GREAT ON MY SLEDS :div20:

I don't think its the oil. I've tried several types and does not seem to matter. I know guys using regular polaris oil and all they do is pull the valves out and wipe them off. Thats why I'm leaning towards something in the setup?

More likely the oil...try to find some Ipone synthetic...

You may be a bit too anal about the valves. Polaris valves will carbon up. They'll also work well even when extremely dirty. There's quite a bit of clearance to allow for build up.

Well I don't think anal is the correct word, but thanks anyway. And there are many Polaris guys who can keep their valves clean. And no they do not operate well being very dirty. Just ask all the guys whose valvels have dropped down and blew a piston. You can run 200 miles and stop and clean and notice a big difference. (On my sled, because they are dirty). Theres got to be a better answer.

Been riding valved Polaris motors since "00. I've gone 1500 miles between cleanings. Valves came out in terrible condition but still operated well. Cleaning them made absolutely no difference in performance. The only time dirty valves effect performance is when they stick or the pressure orfice becomes clogged. Also, the valve problems on the 800 twins have nothing what so ever to do with dirt. It's more a basic design flaw that's amplified under certian riding conditions.

I guess for some riders, spotless valves is a priority. I'm simply suggesting that it's not as important as some make it out to be.

What are you jetted at? When I had the stock jetting, even one size smaller, the valves would blacken/gum up in about 400 miles or so. Now I have it leaned out with a temp-flow, the plugs are a nice light brown/tan, and after 250 miles on new titanium valves, they are litteraly spotless. I also run Interseptor. If your fat, you are not burning the oil and gas, but merely feeding it more sludge. Lean it out, heat it up and I bet the oil deposit gets cleaner.

:div20:

I'm running stock 450's with Tempa-flow. Helped gas mileage and plugs look a lot better but still a touch rich. I have some 430's, but have not tried them yet for fear of to lean. Several people have mentioned with no serious mods that 430's are safe, so I'm going to try them. Hopefully the valves clear up.

when you put the valves back in are you coating them with oil???? you should! the oil helps keep deposits from sticking!

AFJ is right re the valves.

They are very tolerant of sludge and carbon deposits. I clean mine every 1500 or so miles. They appear very dirty but they open and close fine and as AFJ observed I have never detected a performance change from dirty to clean.
The most important aspect of cleaning is the tiny port in the cylinder casting and where it continues up thru the VES housing to the bellows. This gets pretty full of carbon.

I have been using Amzoil since before VES and think it is excellent. The sludge wipes off easily and loosens up with WD40 and sometimes a little Brakeclean.
After 1500 miles on Amzoil I hose em in WD40, scrub em with a green pad or bronze brush and wipe em up with a rag. I use brake clean in the ports and a wire pipe cleaner and then compressed air.

I really think you are wasting your time pulling them out as often as 200 miles. I also think they turn sludgy pretty much right after you clean them and then it's a slow gum up from there.

Be careful with the bolts holding the VES housing onto the cylinder and the plastic cap onto the VES house.
The factory maunal says 12ft lbs...TOO much...I stripped one in the cylinder and one of the ves housing using a $500 torque wrench set to 12ft lb.

If it is an 03 prox, put the needle in #3, and the 430 mains will be fine, with the tempaflow set on the dot.

To answer your original question increasing oil will help with keeping the valves clean. This is why Polaris did away with VES oil and went to VESII oil. The VES II has more detergent in it. Polaris contends that by turning the pump down (to what is a more accurate oil to gas ratio) your not getting enough detergent in the mixture thus creating dirtier valves in less miles. My experience is my wifes 02 XC500 came with what I feel was excesive oil usage. All the 5's came that way. I turned down the pump and the valves got dirtier faster. Changed to VES II oil and they were better but still dirty. Turned the pump back up and they were better yet but still way dirtier than other mfg's valve that I service. I turned the pump back down to a realistic oil usage and just clean the valves more often Thoretically it makes sense but as far as I concerned I'm starting to think Polaris should take a hard look at the other companies valves design. None of the other mfg's have such a problem with dirty valves as Polaris does.
The coment was made to run a different oil. I personally haven't seen a huge difference in different oils but I suspect when you do it is because of the amount of detergent in the mix. JMO
As far as the valves caking so quickly on the valve Polaris motors it has alot to do with cooling. Pull the "Y" pipe off and look at the exhaust port. Very clean. Then look inside the "Y" pipe. Lots of caked on carbon just like the valves. I feel That the Polaris valves are so caked up because there isn't enough cooling ie higher metal temp compared to the cylinder exhaust port.

And guys, its not like cleaning your valves is very hard, and like actionfigure joe said if you go 1500 miles and then clean that is very reasonable, for some people that comes down to once a season others twice, either way not a big deal right...
TJ