Results 1 to 9 of 9
  1. #1
    Hydrotoys's Avatar
    Join Date
    Jul 2005
    Location
    Mesa, AZ
    Posts
    16,712
    +1
    85

    GPRXP engine mounts

    If you have a SST welder or know of one, he/she should be able to contruct these pieces fairly easy. Use your own ski for the template, once you have made your cuts.

    Engine Mounts
    • Material:
      1/4" Thickness
    • 304L: Common or 316L: Common in Marine.
    • Wire: AWS E/ER308 or 312 welding wire.

    • Amount: All in 1/4"SST
      Front mount:
      Left side:2" bar x6L"
      Right side:2" bar x6L"
      mid-support:2"x2" x14.2" angle
    • Rear Port:
      top 2" bar x6L"
      bottom 2" bar x6L"
    • Rear starboard:
      Top 2" bar x 8L"
      Bottom 2"x3"angle x6L"
    • Tri-Mix Shielding gas
    I've had a tough time finding 2x3x1/4" SST. You might have to get 3x3 and cut it down to fit, or take 2x2 and weld on some material. I think it's very important to have that angle at that rear starboard mount.

    Rear Port Mount:
    • Using your gpr as a guide, drill your holes lining the lower plate up, to clear the lip of the stringer. As you can see from the picture, it is nearly centered. This is a fairly important measurement on this mount. Too low, and you won't clear the stringer. Too high, and your engine will sit too high.
    • Using scraps of wood, sit your upper plate parallel to the lower plate.
    • Note: If you COULD drill and tap your upper plate at this time, it might make it easier than doing it on an assembled piece. However, you almost need your engine in the ski, and the plate sitting directly below the engine mount to meaure it... not an easy task.
    • Use a protractor and measure the angle. If possible, tack weld the plate into place at this time, and remove for final weldment. Don't melt anything!
    • The weld bead should be on top of the lower plate, but not over the top of the upper plate. If you put the weld underneath, then the mount will interfere with the stringer. If you put it on top of the upper plate, then it will interfere with the mount.
    • Finish the weld and clean up the area around the weld.
    • Measure, drill, and tap your upper plate at this time, if you didn't do it before.
    • Install the mount. Make SURE that the bolts are just long enough to go through the plate, without touching the stringer, or it will push up your mount, and eat through the stringer.
    • Don't forget, there are rivets on the inner hull holding the backing plates in place. Countersink some holes on your SST mounting plates where these rivets sit, otherwise your plates will not sit flush on the stringers and could damage the mounting plate rivets.




    Last edited by Hydrotoys; 01-07-2008 at 04:30 AM.


  2. #2
    Hydrotoys's Avatar
    Join Date
    Jul 2005
    Location
    Mesa, AZ
    Posts
    16,712
    +1
    85

    Starboard Rear





  3. #3
    Hydrotoys's Avatar
    Join Date
    Jul 2005
    Location
    Mesa, AZ
    Posts
    16,712
    +1
    85

    Front Mount


  4. #4
    Hydrotoys's Avatar
    Join Date
    Jul 2005
    Location
    Mesa, AZ
    Posts
    16,712
    +1
    85

    Studs added to ease installation.


  5. #5
    Hydrotoys's Avatar
    Join Date
    Jul 2005
    Location
    Mesa, AZ
    Posts
    16,712
    +1
    85

  6. #6
    Moderator Insanediego Joe's Avatar
    Join Date
    Mar 2006
    Location
    San Diego, California, United States
    Posts
    5,885
    +1
    142
    Nice mounts...what POS are those going in??

  7. #7
    rangermtb5's Avatar
    Join Date
    Apr 2008
    Location
    North Jersey
    Posts
    4,473
    +1
    58
    Does the aftermarket solid front engine mount have to be used? or can the OEM front mout be used?

    I case somebody can't tell, I'm doing my research...........

  8. #8
    Hydrotoys's Avatar
    Join Date
    Jul 2005
    Location
    Mesa, AZ
    Posts
    16,712
    +1
    85
    I'm sure it CAN be used, but honestly, no one likes that singular front mount due to excess vibration.

    Sometimes SD just won't let go of a crappy idea.

  9. #9
    GP1300R XL1200 LTD GP1200R Yimihemi1200's Avatar
    Join Date
    Aug 2007
    Location
    Newnan, GA
    Posts
    53
    Anyone have premade mounts for sale?

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. 2005 Engine mounts
    By Kinchyle in forum 4-Tec Performance
    Replies: 3
    Last Post: 03-31-2006, 11:45 AM
  2. Rotax HD Engine Mount
    By Sirhc7897 in forum 4-Tec Performance
    Replies: 13
    Last Post: 03-26-2006, 07:48 PM
  3. RR Front Engine mount
    By terryt in forum 4-Tec Performance
    Replies: 3
    Last Post: 02-28-2006, 10:28 AM
  4. RR Engine Mount
    By Kinchyle in forum 4-Tec Performance
    Replies: 6
    Last Post: 02-18-2006, 04:26 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
  •