Results 1 to 3 of 3
  1. #1

    Machined head.....

    I want to install machined head (150 PSI,done by protec) on my gpr1200, and my question is - how many layers of head gastket to use 1, 2 or all 3. Any other ideas, any help appreciated, Thanks


  2. #2
    Crash Test Dummy Smitty's Avatar
    Join Date
    Jun 2006
    Location
    Cullman, AL
    Posts
    1,280
    +1
    2
    2 or 3.... with a machined head, I think you should stick with the full gasket for a measure of safety. I'd stick with the full 3 layers.

  3. #3
    Moderator OsideBill's Avatar
    Join Date
    Mar 2006
    Location
    United States
    Posts
    11,875
    +1
    30
    I used my OEM head gasket as is with my protec machined head it checked 147 147 150 on a snap on gauge

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. WTB Machined head for gp1300r
    By BadinGPR in forum Yamaha Classifieds
    Replies: 0
    Last Post: 10-25-2015, 12:00 PM
  2. oside bill machined head
    By rich.allen in forum Yamaha PWC Performance (2-stroke)
    Replies: 0
    Last Post: 12-10-2012, 06:59 PM
  3. Machined OEM head - what squish do you end up with?
    By philip_gpr in forum Yamaha PWC Performance (2-stroke)
    Replies: 10
    Last Post: 01-23-2008, 11:51 PM
  4. Machining the head of a GPR 1300
    By jpa1300 in forum Yamaha PWC Performance (2-stroke)
    Replies: 3
    Last Post: 02-13-2007, 10:39 PM
  5. If 1200 Cyl are machined to 1300 do i need a 1300 head ??
    By GPR1200_syd in forum Yamaha PWC Performance (2-stroke)
    Replies: 8
    Last Post: 11-23-2006, 05:37 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
  •