[F7GRT]

I am not even sure if power valves are what they are really called but the things that stick out the front of our polaris 800 double engine need some work. Took the left one off and the valve or the part that sticks into the engine and moves back and forth slid right out. Move on to the right one and half of the assembly comes of but the valve part is stuck in the engine. Is this what people call a stuck valve? How do you go about unstucking a stuck valve? Sorry if this makes no sense but I am not perfect with all the correct names for things.

- It is the part with all the carbon build up on it that is stuck

 

[n2oiroc]

that is the power valve. put it back together, warm it up a bit and try again. they come out a lot better hot.

 

[ivar]

Warming it up helps. If its really stuck , you may have to wiggle it back&forth for 20-30 minutes before you get it out. Be patient, it may be tempting to use a big a$$ prybar , don't! : D

 

[stevefromwestford]

Originally posted by ivar@Sep 19 2005, 03:02 AM
Warming it up helps.  If its really stuck , you may have to wiggle it back&forth for 20-30 minutes before you get it out.  Be patient, it may be tempting to use a big a$$ prybar , don't! : D
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had to wiggle 1 of mine for quite a bit , seems the case with most , left comes off easy , right side is a bitch

 

[F7GRT]

Talked to a mechanic friend and he said that his brothers was actually bent and to get it out they had to take the whole engine apart. The engine in my sled is still fogged for summer storage so I would like to avoid starting it if I could. Could I ever heat it hot enough with a hair dryer or a heat gun? Dunno if I would want to go putting a torch to it. Also if this valve has been smoking and not working right since we got the sled used will I notice a difference in performance after cleaning and fixing it?Thanks for the help.

 

[C-notesnopro]

Originally posted by F7GRT@Sep 19 2005, 04:24 PM
Talked to a mechanic friend and he said that his brothers was actually bent and to get it out they had to take the whole engine apart.  The engine in my sled is still fogged for summer storage so I would like to avoid starting it if I could.  Could I ever heat it hot enough with a hair dryer or a heat gun?  Dunno if I would want to go putting a torch to it.  Also if this valve has been smoking and not working right since we got the sled used will I notice a difference in performance after cleaning and fixing it?Thanks for the help.
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heat gun :div20: heat it (cylinder at base of valve boss)good!

smoking? was it coming out hole in cover center, if so replace bellow,,

once working properly,,,hell yes :div20:

 

[stevefromwestford]

Originally posted by C-NOTEPLUSf503@Sep 19 2005, 04:35 PM
heat gun :div20: heat it (cylinder at base of valve boss)good!

smoking? was it coming out hole in cover center, if so replace bellow,,

once working properly,,,hell yes :div20:
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once i changed mine was twice as good as even the stock ones were. But if it is bent ya shouldlook atpiston andrings if peices aremissing from exhaustvalveyagonna have to tear it down

 

[hendo13]

Did you say half of it is stuck in the engine?? If so you got a broken one.

 

[Racin3]

Just some food for thought.... Pull the Valves ever 1000 miles ( and before you put it away for the summer) and give them a quick cleaning. This will slove the prob of them sticking. Might want to upgrade to the titium valves as well.

 

[F7GRT]

No it is just sticky, I will put the heat gun to it. Yes the smoke comes out of the hole in the black cover, it will need new bellows. I hope it will help it because last winter it only beat a stock 500 xc (both sleds 2002) by a half of a length on hardpack snow.

 

[Racin3]

Just wondering F7GRT.... do you no Hal Coles by anychance?

 

[F7GRT]

Sent you a pm. No I don't know him. Where is he from? How do you know him?