01-23-2014, 08:55 AM #1
Shooting for 83mph on the couch ;)
83.4 @ 9400RPM on the limiter in salt water. Goal achieved
This list is current no matter when it's read. I'm after 85 now.
I keep a list of things I've done in case I ever need to sell it or part it out
P&P '06 Head (REV valves, bronze guides, Serdi valve job)
Garrett 500 IC, my piping and highly modified Fizzle HE bracket
2008+ mid pipe and TDR rear exit exhaust with an ultra temp coupler & T-bolt clamps
Deka 80# injectors
Modified R&D Venturi Steering Nozzle
Torx Stage 2 Cam with Ti bolts
Supertech springs / Ti Retainers
Triple Bearing ET 68-140XLE SC with ET cooler
RAD 4 Torque plate
Riva Open loop cooling (my routing)
V-Tech custom tune 9.4k limit
V-Tech Data logging
RXT-X R&D Aquavein grate
RXT-X Closed Loop Plate by Jim
RXT-X Drive Shaft & Pump Support
Custom 4” air with FlexTube PV
06+ rocker shaft and factory jet removed
ARP Head studs
Autometer Liquid Filled 2-5/8 Sport Comp boost in a custom mirror pod
Custom seat cover
MTXL AFR Gauge
TTO IAT Pyrometer
Ride plate holes filled
Reverse bucket mod
Rude through hull
Torx 4” SC adapter
Torx FPR tank adapter
Torx billet reverse & steering nuts
GROCO and all new water lines
06+ flywheel bolts
New carbon seal, PTO seal, top hat and o rings. Drive shaft sanded and painted
WSM rear motor mounts, Piranha Parts solid front mount
engine perfectly aligned
Everything blasted down and painted
OPAS Delete with Ti button head bolts
Custom 32” Renthals, One Industries pad, ODI Troy Lee grips, Blowsion finger throttle & fly racing kill/start
Hull fully debadged
Rule 500 Bilge pump
Danny fuel rail (red over silver metallic base) all AN fittings and braided line
Aeromotive Compact EFI regulator
Hull back half directional sanded with 400
Riva nozzle 81-83mm ring
FYI anyone with a 215 ride plate would do well to use these if looking for 70-75mph
Last edited by Snoman; 03-15-2015 at 07:22 PM.
01-23-2014, 08:55 AM #2
01-23-2014, 02:08 PM #3
Your doing better than me! I only managed 77mph at 8900 with my old rxt and simular mods.
01-23-2014, 02:14 PM #4
01-23-2014, 02:19 PM #5
My brother in law, 1tommygunner1927 has his 08 TX running 82-83mph, so it can be done. The 2 things I see with your setup is the injectors and impeller pitch. I suggest you get rid of the 60# injectors as they are maxed out duty cycle at high rpm. You need either the VT1100 or Injector Dynamics 1000cc to run 8800 rpm or so and the tune to match. Use your 83mm nozzle with a SFR pitched 12.5/21 or send to Duke for approximately the same pitch mod and you'll see much improved speed.
01-23-2014, 02:21 PM #6
My 07 rxt went 87mph on 17psi with a big 4 blade prop.
Its been slowed down to 84mph with 3 blade prop, bent and welded veins shaved. It accelerates like only 1 other ski I have been on. Its pitched to run @ 8800 rpm.
Another ski in Puerto Rico is @ 90mph + with more boost and similar turbo. Same year hull.
Can't use the top speed here, but I know I out accelerate my stock rxp like its idling lol
01-23-2014, 02:30 PM #7
We're talking SC'd skis you turbo fart.
I ran 9K with 80lb Bosch short injectors form a vette and ID spacers. I need more prop but I was cavitating a bit so I'm sure RPMs will be a shit bit lower once I put it back together. I maxed the 50s about 8400-8500
Are you saying swap to a 3 blade prop? Is there any downfall to it?
01-23-2014, 02:39 PM #8
Your title doesn't specify turbo or supercharged does it??
U want to know how to get there, I am telling you how I got there. Pretty sure your hull has 60kg more weight than the 07 rxt.
I don't think you could do it unless you are pulling some major rpm's with a supercharger.
No 3 blade prop loses speed. I intend on fitting lucky 13 pump cone so I can maybe wind up more boost and accelerate even harder with less cavitation
01-23-2014, 03:22 PM #9
I have stripped everything out that doesn't need to be there. Factory tubing, cut the seat brace, no vts, factory steering gone. I should be a whopping 10 to 20lbs lighter
01-23-2014, 03:34 PM #10
I have vts, stereo and dual batteries. Also learning key runs @ 40mph when my kids ride it. We go camping with the rxt and the damn thing uses less fuel than the stock rxp on long runs.
Not sure where 07 hull is lighter than previous year hulls
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