GPR-HO Conversion - Project-R

[R3_killa]

Took on a little project recently and decided to share on the forum.

I've had my GP1200R sitting around which was previously a GPR-SHO and decided to go with the 1.8L HO platform for more practical use along with reliability. I just found the GPR-SHO annoying having to play with the throttle off the line until fully planed.

The following is installed:

SHO gas tank with sending unit
2018 FX-Cruiser HO engine/harness
2013 VXR cluster/gauge
Riva ribbon delete
Riva air-filter
DIY oil/engine cooling
WORX engine cooling anode
WORX pump cooling plate
R&D 2.5 degree 87mm exit nozzle (might consider 2degree wedge)
GP1300R steering cable
SHO steering nozzle
2010 FZR oem prop (13.4/19.7)
SHO pump
FX-SHO driveshaft
Triple pipe water-box with 5'' exhaust
Dean's reflash - 8500rpm limit
Jim's modded rideplate
SS intake grate

I've gotten to the point where I could start and test for possible water leaks and all checks out. I've just received the reflash back from Dean's where he disabled the RiDE system and adjusted the tune based on my current mods. The craft is currently being painted and should be done before the end of the month to do some top speed testing. I'm hoping for 75mph but will be happy with anything 70+

[R3_killa]

GPR-HO Conversion - Project-R

[K447]

- 1.8L HO platform
-
2010 FZR oem prop
SHO pump
-

Why are you going to use an impeller from a supercharged model?

[R3_killa]

Why are you going to use an impeller from a supercharged model?

It's pretty much a 13/19 based on this spec sheet so will be a good starting point.

[R3_killa]

Sneak peak [emoji102]

[Steve-m31164]

The 800 intake grate wont help with your cavitation, get a 1200

[K447]

It's pretty much a 13/19 based on this spec sheet so will be a good starting point. -

Another GH member reported the following for his 2021 FX with HO engine, running at 1200 foot elevation with an incorrect Solas impeller intended for the SHO model.

- the 1.8HO engine will peak at 6700 rpm's - with that SHO prop YS-CD-13/22 -

http://greenhulk.net/showthread.php?t=294789&p=3143704&viewfull=1#post3143704

That means the SHO impeller was overloading the engine enough to bring peak RPM down by about 1,000 which would reduce top speed by several mph, maybe 5-8.

[R3_killa]

The 800 intake grate wont help with your cavitation, get a 1200

Is this the 800 grate? When I bought it a few years back, was made for 1200 in SS for high speed conversions.

[R3_killa]

GPR-HO Conversion - Project-R

Another GH member reported the following for his 2021 FX with HO engine, running at 1200 foot elevation with an incorrect Solas impeller intended for the SHO model.

http://greenhulk.net/showthread.php?t=294789&p=3143704&viewfull=1#post3143704

That means the SHO impeller was overloading the engine enough to bring peak RPM down by about 1,000 which would reduce top speed by several mph, maybe 5-8.

I think you're comparing apples to oranges here-

The article states they were using a Solas 13/22 - I'm using an OEM SHO impeller which is basically a 13/19-

I'm going based on persons who have actually done this same setup and don't see why the same results can't be achieved.

[R3_killa]

GPR-HO Conversion - Project-R

Oh happy day! [emoji41][emoji2]

[ATTACH]478905[/ATTACH]

[R3_killa]

https://youtube.com/shorts/KKXVpFeNtkc?feature=share

[R3_killa]

https://youtube.com/shorts/SUno5KYclOA?feature=share

[R3_killa]

Paint and mats complete - now on to the graphics [emoji41][emoji57]

[R3_killa]

[davidescu_radu]

hi! do i need to make the tunnel reinforcement on a 1200r hull with MR1 in it? Or only for big power sho swaps?