Hey all im new to the jetski scene as a mechanic by trade and a background in engine building and performance mods im curious about what are the best mods to get my ski really moving my ski has the oil injection blocked and i premix the fuel what ratio do others run? im curious on what speeds the standard ski will do 85kmh is all i seem to be reaching but i have been running in the new motor on 25:1 any help and advice would be appreciated cheers
Welcomecomp, reeds, jims plate screw it run triples
I know a guy selling a s/hand set
What kind of riding do you do?
Steve
PWC Performance Parts Australia
0412 146665
hey mate just lake stuff want to get out to the beach but at the moment im just thrashing about in the lake. My ski is a gp1200r think its a millenium edition has reverse 3 seater what oil and ratio would you recommend i want to get the big girl moving been looking at impellers
Oil mix is 32 to 1 on a GPR engine, and the XLT engine as well if the auto luber has been taken off.
TCW3 two stroke oil must be used as well, not just any old two stroke oil etc.
Solas 13/19 prop. is the best aftermarket one for it in stock or semi stock form.
Sounds like you have a silver 2000 model.......correct??????
In stock form it should do around 63 MPH or so.
Beware the power valves on it. Early GPR engines 'dropped' them with dire results. Check this and see if yours as been attended to.
www.waveeaterproducts.com
By now it should have had a rebuild. How many hours on it? They normally need a rebuilt about every 100 hours or so to keep them performing well and stopping disasters.
A compression test is a MUST. Stock engine 130psi down to 100psi, and all cylinders even on numbers.
Carbs need regular attention. Cleaning out and rebuilding yearly. If they go lean you lose the engine.
There are plenty of aftermarket goodies available for GPRs to get them over 90 MPH but expect to spend lots of money.
Heads, carbs, exhausts, big bore and work on them.
Good luck, and have fun.
PS. Should have mentioned......Regular fuel only in a stock engine. That's all they need and run best on.
Last edited by gossie; 02-11-2009 at 01:38 PM. Reason: More info.
yep correct its actually a xlt1200 not a gp1200 sorry. It had a rebuild 12 hours ago i ave been using premium and just this week running 40:1 i spoke to the builder and he wanted it at 50:1. thanks for your help mate. sounds ike the plugs slightly foul on decel then clear on throttle.
Was gonna say that when you mentioned reverse and 3 seater
Steve
PWC Performance Parts Australia
0412 146665
Whoever the 'builder' was is a worry.....50 to 1. OMG. No engine in a short time.Originally Posted by hazrd8
32 to 1 it is, and REGULAR fuel. Read the books that come with this ski......I assume the previous owner did supply them with the ski. Full of good and important information in maintaining it properly.
Good luck.
Yeah i though 50:1 sounded a bit lean so i did 40:1 i didn't get any books with the ski it has has the oil injection plugged so i premix it. Thanks heaps for the tips and advice what brand of oil do you recommend the previous owner had keeped the ski in awesome condition and i want to learn to ride then upgrade and give this one to the missus. I will use 32:1 from now on thanks.
Last edited by hazrd8; 03-11-2009 at 06:40 AM.
As long as it's a TCW3 it's okay. I usually used Valvoline, but any including Yamalube will do the job.
Best not to mix them if possible.......What brand are you using now?
How many hours total has it done? New engine now 12 hours old? Still well worth a compression test and checking if it has the clips on the PVs IMHO.
The ski has done 238 hours all up and 18 on the new motor does not have the power valve clips i used valvoline this weekend and 32:1 and the ski felt awesome but i did run premium. Where is the best place to get a new impellor and clips
Posting Permissions
LinkBack URL
About LinkBacks
Reply With Quote