pxctoday

» Log in

User Name:

Password:

Not a member yet?
Register Now!

» Find OEM Parts

» Jobs

» wallpapers

Page 1 of 49 12311 ... LastLast
Results 1 to 10 of 484
  1. #1

    Seadoo X4 1100 conversion build/resto

    Well I figure I'd start an actual build thread so I could pool all questions and answers into one thread. I have a really hectic schedule so bear with me. I will be doing a restoration and swap at the same time.
    My finalization date is May 31st. No rest for the wicked.

    Ski 1995 Seadoo XP

    Body modifications:

    SPI hood
    Jet trim seat
    Beach House sponsons
    Hydro Turf traction mats

    Engine Modifications

    Engine rebuild being handled by Fullbore
    6 degree timing advance
    Fuel baffle from 99 SPX (5/16") to supply fuel
    Big hub pump from a Seadoo RFI pitched to 16/23 by Glenn
    R&D 85/88 Nozzle set (for now until testing complete)
    Kommander head kit
    Reed spacer and V Force 3 reeds
    Driveshaft being built by local machine shop
    Raddudes conversion plate
    Dry pipe mod
    Tau Ceti FA
    Upgraded coil wires
    Modified water box


    Current questions

    Head: How necessary is a girdled head? I will be running 150 psi for use with 91 Octane

    Ignition Advance: There is of course the mod for the 3 degree. Is 6 degree too much for 91 Ethenol free fuel?

    Rhaas makes an adaptor plate for GP1200 carbs. With exception of hogging out the stock intake to match, are there any other surprises that I need to be aware of if I bolt these up? Do these require the use of an aftermarket fuel pump like the DF62?

    Props

    Shout out to Scottie and JDAKRT who have made this build possible due to a wealth of information.

  2. #2

    Re: Seadoo X4 1100 conversion build/resto

    Spent the day removing all the baked on stickers. I hate this part. Also peeled off the traction mats which will be replaced with Hydo Turf. Motor is unbolted, I just need to get my new hoist mounted back to my ceiling. I'm over pulling motors by hand lol.

    20160316_200635_resized.jpg20160316_200646_resized.jpg

    Also working on pulling the 787 with everything out of my SPX to put in this mint GSX with a smoked RFI motor.
    20160316_145331_resized.jpg

  3. #3
    Top Dog RIDEH2O's Avatar
    Join Date
    Jun 2011
    Location
    nevada
    Posts
    1,780

    Re: Seadoo X4 1100 conversion build/resto

    You dont need a girdled head....but they look cool. And who knows, you may need it later.

    If the fuel pumps on the gpr carbs are good, you wont need externals. But you will need to tap a 3rd pulse line to run them. Im using the Rhaas plate myself. Go back a few pages on my build...PROJECT HX ((evil twin)) to see what I came up with....

    Those 2 dudes you metioned....yeah, keep listening to them.
    2017 Jet Jam Racing "Region 2" Sport GP Champion

    Thanks 2017 sponsors....

    Reno KTM
    DirtTricks
    Reno / Tahoe Watercraft Connection
    Hunt & Sons / VP Racing Fuels
    Garate Enterprises (The Powder Man)
    On the Mark Construction, Reno NV

  4. #4

    Re: Seadoo X4 1100 conversion build/resto

    Quote Originally Posted by RIDEH2O View Post
    You dont need a girdled head....but they look cool. And who knows, you may need it later.
    I'd agree they do look cooler. What would require a girdled head? I could see one at higher compression ratios, but I'll never run over 30cc domes due to being sick of running race fuel constantly.

    If the fuel pumps on the gpr carbs are good, you wont need externals. But you will need to tap a 3rd pulse line to run them. Im using the Rhaas plate myself. Go back a few pages on my build...PROJECT HX ((evil twin)) to see what I came up with....
    Thanks. I'm going to run this plate with extra pulse lines.


    Those 2 dudes you metioned....yeah, keep listening to them.
    Agreed.
    Last edited by Alter Ego Trip; 03-17-2016 at 05:48 PM.

  5. #5

    Re: Seadoo X4 1100 conversion build/resto

    New donor motor just showed up. I couldn't help myself. Had to try out the bling real quick lol.

    20160317_212645_resized.jpg

  6. #6

    Re: Seadoo X4 1100 conversion build/resto

    Decided to go for broke and have the case and cylinders ported. I've also decided on going with the Rhaas adapter plate with GP1200 carbs. It should save me a couple hundred bucks this route and provide almost the same performance as an aftermarket set.

    Seeing as I've upgraded to an SPX baffle with 5/16" lines; do you think I need to run another line for the bigger carbs, or will this provide enough fuel?

  7. #7
    PWCToday.com Is My Home Away From Home Scottie Mac's Avatar
    Join Date
    May 2002
    Location
    Blasterville, USA
    Age
    46
    Posts
    8,339

    Re: Seadoo X4 1100 conversion build/resto

    Who's doing your port work? Judge is a friend of mine, if you want, I will check his availability. He's the best in the business.

    SM
    Those who have done the least in the sport are always the ones with the most to say.

    Best career accomplishment: Fatherhood

    Proud Member of TEAM TFP!

    Support those who support the sport!!!
    JAM Racing
    Judge Motorsports
    www.hotproductsusa.com
    www.optimaracing.com
    www.nynjapwc.com
    Judge Motorsports
    www.raddudesfi.com
    ProWatercraftracing.com
    www.ipdjetskigraphics.com
    ADA Racing
    Monster Motorsports
    A&R Performance

    Mmm........ a pizza sounds good right about now!

  8. #8

    Re: Seadoo X4 1100 conversion build/resto

    Quote Originally Posted by Scottie Mac View Post
    Who's doing your port work? Judge is a friend of mine, if you want, I will check his availability. He's the best in the business.

    SM
    I am having fullbore do it since they are doing the rebuild. I figured that was easier than shipping parts all over the place. I checked into a couple other places but they were 4 times the price. If this were a race ski I'd be more critical about who did it; but for rec use I am not super concerned as long as they don't hurt performance.

    I would love to have Judge do it; but I'm afraid of what that might cost. I had a goal to keep this build at 3k and I'm already about $1,500 over that.

  9. #9

    Re: Seadoo X4 1100 conversion build/resto

    I think I have the driveshaft conversion right in my head, but looking for input on it. Here are my thoughts:

    Cut Kawi shaft end and thread. Cut Seadoo shaft end and thread. Have shop build threaded coupler to mate both halves together.

    Does this look right? Does the shaft need to be supported where it's coupled together or is it short enough to not matter?

    Can I measure the driveshaft length without the alignment tool? I have one coming but it's going to be a week out and I need to get this thing shipped off to fullbore pretty quickly if I want it back before summer ends.

    DS conversion.jpg

  10. #10

    Re: Seadoo X4 1100 conversion build/resto

    I also have a question in regards to the extended pump housing.

    The 95 XP's came stock with it and I'm thinking it would be a benefit to take advantage of it? Bill mentioned modded motors were prone to bending stock XP driveshafts due to the extra length so I'm thinking about using the driveshaft off of a 97 SPX (mated to the Kawi shaft) which was thicker and should take the abuse better.

    Thoughts?
    Last edited by Alter Ego Trip; 03-19-2016 at 01:44 AM.

Page 1 of 49 12311 ... LastLast

Thread Information

Users Browsing this Thread

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

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Powered by vBadvanced CMPS v4.2.0