Results 1 to 10 of 10
  1. #1
    Here come the smokers! OBXJeepGuy's Avatar
    Join Date
    Aug 2008
    Location
    Outer Banks, NC
    Posts
    1,393

    Milling the stock 760 head...

    Can someone tell me how much to mill from this head, and still be able to safely run 93 octane gas?

    I have searched, and turned up nothing...


  2. #2
    krispaintballz's Avatar
    Join Date
    Sep 2007
    Location
    Kenosha, WI
    Posts
    2,978
    depends on the angle. Some are running 2 angles allowing them to run 160-175 psi while running safe on 93 pump.
    Just send it to lowell for the time and money it is def worth a trip to him.

  3. #3
    Old Ski Insanity w/rpm500's Avatar
    Join Date
    Aug 2005
    Location
    Crystal River Fl
    Posts
    2,208
    just saw a protec on ebay....

  4. #4
    Here come the smokers! OBXJeepGuy's Avatar
    Join Date
    Aug 2008
    Location
    Outer Banks, NC
    Posts
    1,393
    Quote Originally Posted by w/rpm500 View Post
    just saw a protec on ebay....
    Can you put up a link? I can't find it... You always find this stuff, and I never see it!!
    Posted via Mobile Device

  5. #5

  6. #6
    Here come the smokers! OBXJeepGuy's Avatar
    Join Date
    Aug 2008
    Location
    Outer Banks, NC
    Posts
    1,393
    Well, I tried it every which way I could think of on the mobile eBay site... Nothing turned up!

  7. #7
    Old Ski Insanity w/rpm500's Avatar
    Join Date
    Aug 2005
    Location
    Crystal River Fl
    Posts
    2,208
    if your saving up for the hammer kit dont buy this, get your stocker milled as shown when you buy the whole kit setup from HARRY at GROUP K(IRC,the 'squish band' needs cutting too on the 760 o/e, as harrys hammer uses,not just a flat milling )

    E bay 101: BASIC SEARCHES....you have to be more creative on your ebay searches ... think of ways people CAN list or name something, besides the actual name... like yamaha cylinder head or yamaha pwc head... Look also in GP or GP760 for body stuff..also in BLASTERS and RAIDERS as they used 760 engines too.... or even model #'s for engine parts, 64x in 760's or 6k8 in 500's (yami dealers sell old o/e parts by number so search 'check' the whole auction, not just the title's)

    class dismissed

  8. #8
    Here come the smokers! OBXJeepGuy's Avatar
    Join Date
    Aug 2008
    Location
    Outer Banks, NC
    Posts
    1,393
    Thats the thing.. When I search eBay's mobile site, I do it six ways to Sunday just like on the PC. Any tag name I can think of, I try....

    I guess the search engine on their mobile site isn't as good as on the full site...

    Still, no one has told me how many thousandths I can mill from my head for use with 93 octane. I have access to a machine shop...

    Posted via Mobile Device

  9. #9
    Old Ski Insanity w/rpm500's Avatar
    Join Date
    Aug 2005
    Location
    Crystal River Fl
    Posts
    2,208
    If you do deck the sealing surface ,you also have to mill the dome area for this to be right...there has to be a specific even clearance(squish) between the head and piston at compression....your flame path will not travel correctly, leaving 'hot and cold area's' .
    The 500's you could just mill .030 and be safe.... but not 760's

    there is a given 'mill' so much spec, this much for this much rise in compression,but its not gospel...search for it(pistonwash ,I think posted it )...here is INFO from one search..

    http://greenhulk.net/forums/showthre...n+mill+milling

    and another..

    http://greenhulk.net/forums/showthre...highlight=.010

  10. #10
    I have a Protec recreation head for the Yamaha 760 for $100 shipped. Pics are posted here.

    http://www.x-h2o.com/showthread.php?t=44891

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Milling a stock gp1300 head good or bad
    By ctct2118 in forum Yamaha PWC Performance (2-stroke)
    Replies: 10
    Last Post: 07-23-2009, 04:31 PM
  2. stock 951 head milling? how much?
    By 1fastrat in forum 2-Stroke Performance
    Replies: 12
    Last Post: 08-26-2008, 07:10 PM
  3. Does anyone know the squish measuremt for a stock 1300 head?
    By jpa1300 in forum Yamaha PWC Performance (2-stroke)
    Replies: 2
    Last Post: 06-08-2008, 10:25 PM
  4. Modding the STOCK oem head
    By Chrisrokc in forum Yamaha PWC Performance (2-stroke)
    Replies: 2
    Last Post: 07-29-2006, 01:48 PM
  5. Milling a stock head?
    By DaFischQC in forum Yamaha PWC Performance (2-stroke)
    Replies: 8
    Last Post: 01-25-2006, 06:35 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
  •