Page 5 of 6 FirstFirst ... 3456 LastLast
Results 41 to 50 of 54

Thread: My GPRXP build

  1. #41
    Happily Self-Employed WFO's Avatar
    Join Date
    Nov 2005
    Location
    Houston, Texas
    Posts
    13,072
    +1
    505
    Quote Originally Posted by John's truck View Post
    The gauges from both the 2008 and 2006 donor ski’s are trashed. The tiny tach is temporary until I replace it with a SeaDoo factory gauge. Priority right now is on the engine rebuild. I probably should have gone with an Autometer or something but it came down to finding something that’s compatible with 3 cylinder engines, cheap, and also waterproof. So the cheapest tach on the planet won.
    i hear you. the seadoo gauge is actually pretty accurate, and its what we usially use on the seadoo conversions

  2. #42

    Join Date
    May 2010
    Location
    Alabama
    Posts
    59
    +1
    6
    Didnt bother to take a picture, but I realized the ride plate fittings and water pump inlet/outlet are bigger than 3/4. So I pulled the heat exchanger back out of the ski and ordered some NPT to 1” barb fittings. Once I have everything and seal the fittings up with Leak-Lok I’ll put the heat exchanger and intercooler back in and finish plumbing hoses.

    On Friday I should have time to go work on lapping the Supertech’s in to the head, depending on how busy work gets at the end of the week

  3. #43

    Join Date
    May 2010
    Location
    Alabama
    Posts
    59
    +1
    6
    So I wasn't happy with the bends on the heat exchanger bracket (rubbed the intercooler), and the fittings were a little loose... and I put the wrong barb size on for the antifreeze side (3/4 vs 1 inch barb). So I pulled it back out of the ski and took it all apart. I hammered the bends square in a vise, and ordered the right hose barbs and some Leak-Lock. I like how it sits with the bracket now, so hopefully by this weekend I'll have it all plumbed in if the stuff shows up.

    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	IMG-3953.jpg 
Views:	167 
Size:	51.0 KB 
ID:	479300   Click image for larger version. 

Name:	IMG-3954.jpg 
Views:	170 
Size:	63.3 KB 
ID:	479301   Click image for larger version. 

Name:	IMG-3982.jpg 
Views:	168 
Size:	86.6 KB 
ID:	479302   Click image for larger version. 

Name:	IMG-3891.jpg 
Views:	170 
Size:	117.2 KB 
ID:	479303   Click image for larger version. 

Name:	unnamed.jpg 
Views:	164 
Size:	50.8 KB 
ID:	479315  
    Last edited by John's truck; 10-06-2021 at 08:53 PM.

  4. #44

    Join Date
    May 2010
    Location
    Alabama
    Posts
    59
    +1
    6
    Got the GPS speedo, took it for a test drive in the truck, external antenna ran outside taped to the passenger side mirror. It's within .5 mph of the truck's speedometer. Got home after I was happy seeing it work, then used a hole saw to cut the dash opening. I need to wire it all in to the harness with a DESS switched positive.

    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	IMG-4028.jpg 
Views:	155 
Size:	72.1 KB 
ID:	479358   Click image for larger version. 

Name:	IMG-4029.jpg 
Views:	156 
Size:	59.5 KB 
ID:	479359   Click image for larger version. 

Name:	IMG-4036.jpg 
Views:	154 
Size:	55.8 KB 
ID:	479360   Click image for larger version. 

Name:	IMG-4035.jpg 
Views:	151 
Size:	121.6 KB 
ID:	479361  

  5. +1 by:


  6. #45

    Join Date
    May 2010
    Location
    Alabama
    Posts
    59
    +1
    6
    Well I set out to rebuild the head today but work got in the way. I only had enough time to tear it down and clean it up a little. Next week I’ll lap in the Supertech’s and finish up

    Also go in my 1” barb fittings. I realized I need a 90 fitting on the other one

    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	CB8F7DB1-5B49-4B0E-915A-449B180B4E0B.jpg 
Views:	139 
Size:	129.3 KB 
ID:	479413   Click image for larger version. 

Name:	BD32E848-0395-4001-A92D-BF15B376AD97.jpg 
Views:	140 
Size:	93.2 KB 
ID:	479412   Click image for larger version. 

Name:	DA95F5D7-4A3F-4E4A-AA22-5440E3BAD805.jpg 
Views:	140 
Size:	83.8 KB 
ID:	479414   Click image for larger version. 

Name:	B4141943-F7D7-4C77-9097-495D6150B7D3.jpg 
Views:	136 
Size:	100.3 KB 
ID:	479415   Click image for larger version. 

Name:	2179CE5C-3C10-4244-8840-87CBB8538035.jpg 
Views:	141 
Size:	78.0 KB 
ID:	479416  

  7. #46

    Join Date
    May 2010
    Location
    Alabama
    Posts
    59
    +1
    6
    Won’t be much progress this week, I’m stuck on the work boat. Hoping next week I’ll get more done with the engine. I did get another 90 and put the fittings on the heat exchanger. Ps leak lock is the real deal. It’s supposedly compatible with shitloads of chemicals including glycols.

    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	9A76BE93-E013-46C9-B903-AE0EF5CBAE5F.jpg 
Views:	129 
Size:	51.7 KB 
ID:	479529   Click image for larger version. 

Name:	D765A9F6-FD6D-4F4A-8C58-B885A7AF3369.jpg 
Views:	126 
Size:	56.2 KB 
ID:	479528  

  8. #47

    Join Date
    May 2010
    Location
    Alabama
    Posts
    59
    +1
    6
    A lot of guys have been saying that these hulls are faster with LESS trim, so I went ahead and ordered an XLT 1200 nozzle, 87mm 3 degree (vs 5 degree from the gp1200r). When it gets here I’ll swap it on, and cut my new VTS trim rod to the proper length for getting full-down.

    it sounded like the Yamaha sport boat nozzle is the same but has stiffer stators and no reverse bosses. I couldn’t find one on eBay, and I found the XLT nozzle for $30 shipped.

    Who knows, I might want to run *gasp* reverse someday

  9. #48

    Join Date
    May 2010
    Location
    Alabama
    Posts
    59
    +1
    6
    Been gone all week, finally got home today, my replacement SBT throttle cable was waiting for me. So I popped that on. Not much else to do today

    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	5ECE55BD-6FE2-4075-8574-CB9A685CE455.jpg 
Views:	114 
Size:	59.4 KB 
ID:	479634   Click image for larger version. 

Name:	ECF3D782-2CB9-40B1-A591-D8F038439F73.jpg 
Views:	113 
Size:	82.2 KB 
ID:	479635  


  10. #49

    Join Date
    May 2010
    Location
    Alabama
    Posts
    59
    +1
    6
    Well I think I said I had ordered an XLT nozzle. 87mm, 3 degree. It showed up today, so I chopped off the “visibility spout” fitting, drilled, tapped and plugged it. Then I mounted it up, set it to full down, and extended the VTS to full down. Rod wasn’t long enough. So I got my new piece of all thread and put a slight bend in it (to clear the top of the pump) and cut it just right. Trim rod is the perfect length for full down, and still has a good range of up travel.

    Then I mounted up the reverse side brackets just for fun. I don’t have the bucket or a cable. I just wanted to see it fit. Don’t get your hopes up, I’m perfectly fine with this ski not having reverse.



    Full down



    Full up



    Just a mock up... they’re coming back off

    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	5B1D7CB0-9330-4DAB-B746-408A2F3848F0.jpg 
Views:	97 
Size:	70.4 KB 
ID:	479796   Click image for larger version. 

Name:	C13FA4F9-DE12-4C74-9E3E-2FB4628BC77A.jpg 
Views:	95 
Size:	48.1 KB 
ID:	479789   Click image for larger version. 

Name:	39398E36-E5D6-4F1F-9D1F-D748FD1A96E4.jpg 
Views:	96 
Size:	34.3 KB 
ID:	479790   Click image for larger version. 

Name:	BDA9592D-8F75-40CA-84EE-B3D4BC8ABEA5.jpg 
Views:	96 
Size:	57.5 KB 
ID:	479791   Click image for larger version. 

Name:	33055118-8038-49D8-85E0-82131D13FBD1.jpg 
Views:	98 
Size:	67.2 KB 
ID:	479793   Click image for larger version. 

Name:	118C4106-7AB5-440F-A557-1F3D73CB75B4.jpg 
Views:	95 
Size:	59.3 KB 
ID:	479794  


  11. #50

    Join Date
    May 2010
    Location
    Alabama
    Posts
    59
    +1
    6
    Well, there was a setback today. The head is junk. There’s just too damn much corrosion and pitting. The nail in the coffin was pitting on the valve seats. I’m not going to lap these valves in just to burn them up or have head gasket leaks.

    So, the solution, is a different engine that we had pulled out of an 06 RXT 215. The head is clean. I stripped it down today, took out the 72 valves and all that, got it ready for new seats and lapping. And I got a 629 cam from a junk head my buddy had laying around (dropped valve). We’ll use my Supertech valves, RXPX springs, titanium retainers, 255 rocker shaft and arms. I don’t know when that’s going to happen though. I’m about to go out of town for a month, so progress is basically stalled until December.

    Junk head:
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	BF666119-5BB2-4CD5-9D49-04ECDC9394F1.jpg 
Views:	81 
Size:	94.9 KB 
ID:	479915   Click image for larger version. 

Name:	2E62C852-4E4D-4FA9-B916-9E77CE21B6E8.jpg 
Views:	83 
Size:	61.2 KB 
ID:	479916  

Page 5 of 6 FirstFirst ... 3456 LastLast

Thread Information

Users Browsing this Thread

There are currently 2 users browsing this thread. (0 members and 2 guests)

Similar Threads

  1. GPRXP Build Thread
    By swlamarshrunner in forum Conversion PWC Performance Skis
    Replies: 6
    Last Post: 09-12-2019, 08:42 PM
  2. Yet another GPRXP build
    By toxicgun in forum Conversion PWC Performance Skis
    Replies: 140
    Last Post: 08-08-2019, 10:35 AM
  3. GPRXP Build?
    By cwmateiuc in forum 4-Tec Performance
    Replies: 4
    Last Post: 06-04-2015, 01:24 PM
  4. want to build a gprxp
    By Kozerxp in forum Conversion PWC Performance Skis
    Replies: 12
    Last Post: 09-30-2011, 09:35 AM
  5. Seadoo951's GPRXP Build
    By seadoo951 in forum Conversion PWC Performance Skis
    Replies: 101
    Last Post: 09-13-2008, 09:22 AM

Posting Permissions

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