04-05-2008, 08:47 PM #1
Conversion Speed and Mods database
106MPH @ 7100 RPMS, RUNWME 2005 GP1300R Propski...Has propeller surface drive conversion. Stock 1300cc cylinders, head shaved to raise compression, dplate, free flow and electric waterpump. 91octane and usually run with full tank of fuel to add stability. Much more speed potential in it when highspeed handling gremlins worked out.
96.8 mph @8800+ rpm, Green Hulk, 2001 GPRXP, Stage 4+, rider 230+, L temp 74, e temp 79, altitude sea level, 3/4 tank gas.
Modifications: RXP stock bore engine in 2001 GPR hull. Lower compression 7.5:1 JE pistons. Rude Performance "Nilamonster" head with oversized valves. 4-tecperformance.com open loop cooling system. Custom built intake manifold with built in Vortech intercooler. 63 lb hr Siemens injectors and Rude rising rate fuel pressure regulator. Stickems turbo kit. Rotax Racing Igni Power engine management system. Greenhulk SST 800 intake grate. 87mm R&D nozzle. Stepped sponsons, Jim's Performance FF ride plate. R&D trim tabs. 14/25 Dynafly impeller (soon to change), custom paint and graphics.
96.8 @ 8700 rpms GPRSHO. Shodude's conversion- GPR hull, Stock SHO motor, E1 Riva wheel, Type 3 I/C, modded 1200 grate, 15-25 pitch DF, stock pump, Shimmed tabs and shimmed R&D rideplate.
96.0MPH @ 8540, ksalles, 09/GPSHO, 215lb rider weight, 55 degree temp, 4 bars of fuel, one click from all the way up trim setting, home made 4" air intake, ET15.5 wheel, custom intercooler setup, dynafly 14/24, custom gutted and shortened 1200 waterbox, stock sho venturi and steering nozzle, hull mod's (SS 800 grate, Jim's FF rideplate, machined Riva trim tabs, stock sponsons), Ben Herman prepped hull, V-TEC Stage III, stock engine, manifold upgrade sleeve, Tial 50mm BOV, additional ventilationports in front of hull and rear of seat
87.3 @ 8350 Dukes gprxp with a Greenwheel, RR 8800 ECU, X pipe, 1200 WB, 14 vien pump, setback DF prop, Tommy Jordan plate, 60 pound injectors, 1200 grate, OEM tabs with 2 washers, no superman.Same boat with ET 68-140, at 8800 and runs 93.8 W reflash ECU at 8900-9000 is 94+.
93.8 mph @8650rpms (all over rev limiter) Bumble Bee (Rob - Westy) 2000 GPRXP Rider ??kilos Temp 22 Degrees Celcius Sitting on the Seat with a ¾ Of A Tank.Mods = Ported Head, Lightened Valve, Seadoo Centre Manifold, Seadoo Centre 60mm Throttle Body, Seadoo Centre ECU 8650, Stock Exhaust manifold, RRFPR, 60lbs injectors, XS Inter Cooler, B kit 15psi, Seadoo Pump with a 15/22 4 blade, 2 x RIVA Wedges ,83mm Nozzle, Jims Plate .940, SS 800 Grate, OEM Metal Tabs .200, R&D Sponons, Open Loop Cooling.(new prop on its way will update in time)
93.3 @ 8550, Game Over Second time on the water, 92 first day. Sea level with 55 injectors and Frank's (Stickem) turbo kit! Riva ECU and bangin the limiter with only 15 pounds of boost. Stock bottom end with lightened valve train and upgraded valves in the head, otherwise stock. Pump and hull setup is out of my 1300 ported boat along with my pressure relief system. Much much more to come soon.
91.4 mph @8650rpms Bumble Bee (Mike) 2000 GPRXP Rider 105kilos Temp 22 Degrees Sitting on the Seat with a ¾ Of A Tank.Mods = Ported Head, Lightened Valve, Seadoo Centre Manifold, Seadoo Centre 60mm Throttle Body, Seadoo Centre ECU 8650, Black Magic Header, RRFPR, 60lbs injectors, XS Inter Cooler, B kit 15psi, Custom Deal Exhaust, Seadoo Pump with a 15/22 4 blade, 2 x RIVA Wedges ,83mm Nozzle, Jims Plate .940, SS 800 Grate, OEM Metal Tabs .200, R&D Sponons, Open Loop Cooling, Custom Paint and Graphics Built By Shibby /Hydrojunckie Engine and Performance Done By Jason Your GO Fast Man TY.(new prop on its way will update in time)
90.1 @8500 rpms Insanediego Joe-2001 GPRXP (Spitfire) 88.1 mph Rude-1, 50# injectors, Riva Valve trane, Riva ECU/TB, Home Made 4" Rear Intake, XS-IC, 70 degrees sea level, HO pump and 155mm Dynafly prop, 1200 grate, FF plate, Riva-tabs cut and spaced down 1 washer, stepped sponsons, solid front mount, "MC1" waterbox, with 3.5" exhaust, custom paint and graphics.
89.2 @8300 RPM's hydrojunkie. 01 gprxp RUDE CHARGER, RIVA ECU, PORTED HEAD,BLACK MAGIC HEADER KIT, INKONELL VALVES, RUDE CAM, 60LB INJECTERS, 4 INCH AIR, SEADOO PUMP 16- 21.5 PROP , 81 MM NOZZLE, STOCK TRIM TABS 800 GRATE , RUDE FUEL CONTROLER. 11 POUNDS OF BOOST
89.00 @ 8500rpms, Hydrotoys, 2000 Yamaha GPRxp, Stage3, 325lbs, 55deg water, no e-deg temp, engine temp-150deg@20psi water pressure, 240ft (corrected altitude, approx 250ft), 3gallons, 91oct, home-made 4" rear air intake, Rude charger, 14psi, XS intercooler @35psi water pressure.16/22 Dynafly on a Yamaha 6vien 155mm 2005 pump, "MC1" waterbox with 3.5” outlet, J-pipe cut below waterholes, R&D Gp800 grate, stock tabs spaced down 1 washer, FF-plate, stepped sponsons, triple pump pressure relief, R&D autodrop turn nozzle, 85mm nozzle. Riva: Injectors/ECU/SC Stock engine. RR solid front mount, stock paint and graphics. In Stock form, 80.00 @ 8100rpms, 2000 Yamaha GPRxp, stock RXP engine with 4" air intake, 325lbs, 65deg water,engine temp-150deg@20psi water pressure, 240ft (corrected altitude, approx 250ft), 3gallons, 91oct, 15/20 Dynafly on a Yamaha 6vien 155mm 2005 pump, "MC1" waterbox with 3.5” outlet, J-pipe cut below waterholes, R&D Gp800 grate, stock tabs spaced down 1 washer, FF-plate, stepped sponsons, single pump pressure relief, R&D autodrop turn nozzle, 85mm nozzle. RR solid front mount, stock paint and graphics.
88.6 MPH@8500rpms Arny Gollott3 2003 GPRxp with a 05 4Tec. Rider weight 190 lbs, Kerry R&D plate with Skegs with some angle , Cut tabs, spaced down two washers, 1200 grate, Beach House Sponsons, 4" "HOT" Intake (Filter Stubbed right out of the S/C)...but I do have my hull well ventilated... X/S I/C, Rude Charger Riva ECU, Valvetrain, 50 Inj, HO pump with 14/21.5 Impros Prop, trim in neutral position at the 2008 MB on a full tank of gas!!
Deansta Gprxp 2000
88.2mph@8300rpm 1200 grate
Rude1,Rotax racing intercooler,riva pro ecu,riva 50s,ho pump,dy 16/22,riva valve train upgrate,jims plate set by mik72e,free flow and still tuning!!
87.0 @ 8340 rpms GPRXP Steve 2001 GPRXP Full stage 3 with RR camshaft. 55 degree air and water, 3/4 tank of gas, Jims FF plate, MC1 waterbox with 3.5", 05 ho pump, 14/24 dynafly, R&D sponsons and steering nozzle, 85mm venturi, Fine tuning still needs to be done..., custom paint and flame graphics.
85.50 @ 8450rpms, Red Devil in tuning, 2001 Yamaha GPRxp, Stage3, 325lbs, 85deg water, 150 e-deg temp, 3400ft corrected altitude, 3gallons, 91oct, Rude charger, 12psi, Pirahhna intercooler.14/20 Dynafly on a Yamaha 6vien 155mm 2005 pump, "MC1" waterbox with 3.5” outlet, J-pipe cut below waterholes, R&D Gp800 grate, stock tabs spaced down 1 washer, FF-plate 0.95", stepped sponsons, triple pump pressure relief with Kerry holes, 87mm nozzle with stock cut R-D turn nozzle. Riva: injectors/ECU/springs Stock engine. RR solid front mount. CF or stock seat, stock hood. Graphics to be updated by owner.
85.4 @ 8050 mrbtd gprxp with a ET-137 Chrager, Type 9 XS I/C, Stock ECU, HO Pump , 14/24 DF prop, 1200 grate, Jims FF Plate
83.8 at 8130 Dukes Mystery Customers GPRXP completly stock motor except IC (XS). Ski had Riva 1300 plate with shims in front, beat to death DF, 1200 grate, plastic unshimmed tabs, and untrouched hull. full tank of gas. Df was pitched to a true 14-20.5.
83.6 @ 7900 rpms RX951 2000 GPRXP All stock 4-tec motor, 3" RIVA intake with K&N filter. 81 degrees, 1/2 tank of gas, MC-1 water box, 87mm nozzle, short pump setup[no 2" extension], SS grate, 14/21.5 dynafly, plastic pump liner, 1.028 ride plate angle, trim tabs to the hull. No rideplate holes filled.
83 @8160rpms GPRXP 06gprxp home made 4'' intake, green wheel, with a bad 42 pound injector, XS intercooler, HO pump, dynafly 14/20, 1200 intake grate, stock trim tabs no washers, and a Jim's plate.
81.9 at 7400 rpms GPR-SHO(salt water), SHOdude, 225 lbs, 2001 , stock motor with power filter, intake manifold, free flow exhaust, trued hull, 1200 grate, Jim's modded Riva ride plate, 13/25 skat prop, stock sponsons
80.4 @8120 rpm at the 08 MB. Jeffsntx 02GPRxp, FF plate, stock tabs, HO pump, 14/18 DF, 06-4Tec, 4" intake, MC1 waterbox with 3.5", Open loop cooling, Metal washers. Full tank of gass. Stock paint.
80.2 @ 8100 rpm GPRXP. Addicted, stock motor, 4" intake, GPR exhaust w sound suppression, and 08 midpipe, closed loop, 16/18df, 85mm nozzle, Riva 1200 grate, ff plate @.920", stock tabs @ .30, 85mm nozzle, 90deg water and air at mudbug. 80.8-82.1 @8000rpm with rotax 9# wheel, with no tuning.
Last edited by Insanediego Joe; 07-08-2010 at 09:23 PM. Reason: Added Shodude
06-23-2008, 02:17 AM #2
for you conversion heads, we've started tracking this. If you want to show off your speeds, or just provide some documentation for others, post it here, we'll incorporate it, and delete the post.
11-21-2008, 09:10 AM #3
Howard's conversion went 94.0 at Hydrodrags and Gameover's went 92+
05-29-2009, 08:04 PM #4
Updated. How about some more. Please add in the details you want up there.
11-20-2009, 12:16 PM #5
11-20-2009, 02:04 PM #6
Has anyone run an Et140 or 2Rude? Can anyone post up a confirmed speed?
Im running an ET140 on mine. Ive asked around about what speeds I can hope to see and Ive heard everything from mid 80s to "90 mph no problem" but its all speculation. By looking at these builds, it takes a lot to get to 90mph. What boost did the Bumblebee run to get there?
11-20-2009, 03:05 PM #7
11-20-2009, 03:26 PM #8
It all depends on hull setup. Guys that know these hulls inside out like Duke and Billie get incredible #'s out of them. guys like me get average #'s. the more time you put into testing your individual setup, the faster you will be. These are not seadoos. there's alot more to it than throwing boost at it and hoping for the best.
11-20-2009, 04:00 PM #9
- Join Date
- May 2005
- ocean nj
11-20-2009, 05:31 PM #10
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
By Jarrett in forum Yamaha PWC Performance (4-stroke)Replies: 539Last Post: 10-17-2016, 10:37 AM
By Rip'nTear SHO in forum Yamaha PWC Performance (4-stroke)Replies: 1106Last Post: 07-19-2016, 09:56 PM
By steve-uk in forum Yamaha PWC Performance (4-stroke)Replies: 72Last Post: 06-06-2016, 07:46 PM
By engineermike in forum Sea Doo How To & FAQsReplies: 373Last Post: 01-24-2016, 08:43 AM
By ctriverguy in forum 4-Tec PerformanceReplies: 52Last Post: 09-13-2008, 05:23 PM