Page 1 of 3 1 2 3 LastLast
Results 1 to 10 of 24
  1. #1
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
    Join Date
    Oct 2006
    Location
    Cleveland OH
    Posts
    17,330
    +1
    31

    Are Pro 785 exh valves treated?

    Does anyone know if the exh valves are treated with any coatings?

    Reason I ask is I'm wondering if polishing them would help prevent some carbon build up? Or at the very least take longer to begin build up?

    That should help lengthen the time between valve cleanings.


    I don't want to do it and find they have an anodized finish or something of the sort.


  2. #2

    Join Date
    Aug 2006
    Location
    Homer Glen Il.
    Posts
    8,702
    +1
    109
    go back to bed Bow LOL

  3. #3
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
    Join Date
    Oct 2006
    Location
    Cleveland OH
    Posts
    17,330
    +1
    31
    Quote Originally Posted by 785 lugs View Post
    go back to bed Bow LOL




    Believe it or not, this would actually have a use!!!!!!

  4. #4

  5. #5
    Derwood98's Avatar
    Join Date
    Jul 2010
    Location
    Lakeville, Minnesota, United States
    Posts
    627
    +1
    10
    Did't bow say that he had them tested and they were the same coating as the cylinders? I'd say it, but I cannot spell it. LOL. I have a spare set that I keep clean and just swap them out when the time comes.

  6. #6
    bowsniper's Avatar
    Join Date
    Aug 2008
    Location
    macomb,michigan
    Posts
    5,896
    +1
    6
    Thats Funny!.lol yeah, The guy used a hand held really expensive(30,000.00) gadget to see what it was. it came up nikisil coating on the outside and aluminum on the inside. the only reason it came up with aluminum was, because the valve was broken and we tested inside where it was broken off clean. otherwise the rest was just nikisil everywhere on it.

  7. #7
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
    Join Date
    Oct 2006
    Location
    Cleveland OH
    Posts
    17,330
    +1
    31
    Quote Originally Posted by Derwood98 View Post
    Did't bow say that he had them tested and they were the same coating as the cylinders? I'd say it, but I cannot spell it. LOL. I have a spare set that I keep clean and just swap them out when the time comes.
    I believe you're talking about an experimental motor (custom valves) Not your normal production run.

  8. #8
    PolarisNut's Avatar
    Join Date
    Dec 2006
    Location
    Lower Michigan
    Posts
    1,809
    Not sure about the 785 valves, but the rest of Polaris's aluminum exhaust valves are coated with something to reduce carbon buildup. It usually wears off anyway. It specifically states in the sled owners manuals to be careful cleaning the valves, so you don't scratch the coating...FWIW. It looks like an anodizing to me...no way it's nikasil.

  9. #9
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
    Join Date
    Oct 2006
    Location
    Cleveland OH
    Posts
    17,330
    +1
    31
    That's what I'm kinda thinking. Thanks Nut.

  10. #10
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
    Join Date
    Oct 2006
    Location
    Cleveland OH
    Posts
    17,330
    +1
    31
    PRO 785 exhaust valves are DEFINATELY coated!!!!

    There were spots that the coating wore away on a set I had in the basement. My basement flooded last week, the valves got wet, and white fluffy corrosion started to form on the areas that were worn through.

    Definately coated, so carefully clean them as to not ruin the finish guys...

    And DO NOT polish them, because you will wear through the coating.

Page 1 of 3 1 2 3 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Pro 785 Exhaust Valve issues and repairs.
    By bowsniper in forum Polaris Tech Tips and Info
    Replies: 0
    Last Post: 07-11-2013, 06:25 AM
  2. Which way up do the Pro 785 exhaust valves go in??
    By wayneb2510 in forum Polaris Projects
    Replies: 2
    Last Post: 06-23-2013, 06:12 AM
  3. FS - Parts Pro 785 exhaust valves
    By retro in forum Polaris Classifieds
    Replies: 1
    Last Post: 04-29-2012, 12:00 PM
  4. PRO 785 gas valves
    By xlint89 in forum Polaris Open Discussion
    Replies: 91
    Last Post: 08-04-2011, 02:04 PM
  5. pro 785 exhaust valves don't open
    By wrenchdaddy in forum Polaris Open Discussion
    Replies: 18
    Last Post: 05-28-2008, 04:43 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •