05-06-2010, 07:01 AM #1
2001 Riva Stage 3 GP1200R Triple RPM ?????'s
Well....it was a long winter and many projects in the fire. Finally got everything put back together on a WR I bought from a GH member. Some where along the line someone used a no name bearing (China I am pretty sure) and some of the cage fingers were breaking off and went through #1, so I had to renick a cylinder and #3 showed a lot of serious scoring, installed all new pistons, bearings pins, had Crankworks T&W the crank with big bearing mod.
Riva 1200 P&P cylinders, RAD LW flywheel, gas valves, IR vapor seperator, FPP triples (stock water box), carbon reeds, Riva heads(93), jetting 135M, 110P, 2.5NS. external fuel pump, drilled restictors, removed check valves, installed return line jets(2), riva ride plate and tabs. Solas CD 13/19. stock pump, tunnel reinforced, sealed pump shoe, WFO intake grate bracket (very NICE)R&D cdi, dual fuel lines and filters. Moved flusher from inside of hull to outside.
First time in water after a few runs I started leaning the carbs a bit. best RPMs have been 7490. I know they should be higher and might get a little more as the motor goes through a few heat cycles. No GPS reading done.
I still need to get rid of the ride plate and change to a modded one, but just doing a few base line tests.
Anything else I need to consider, do differently or that I have just plain done wrong?
Upgrades I have but not done yet...
Dominator Intake (Thanks O'side)
Thanks for any suggestions or corrections
05-06-2010, 07:13 AM #2
Here are a few pics.....I really like having the flusher outside the hull.
The bilge pump is an automatic.
05-06-2010, 09:15 AM #3
What ignition is currently in it? if stock you are banging the rev limiter.
I would go up to 145 on the high speed jets as well.
05-06-2010, 09:46 AM #4
It still has the R&D Triple CDI that was installed when Riva did the mods.
I do have an Advent that I will try this weekend.
I will go ahead and put some 145's in for mains and try that.
pm you address again, I got something neat to send ya........
05-06-2010, 09:55 AM #5
check the bellows on the gas valves. You need to safety wire them, if you havent already.
05-06-2010, 11:16 AM #6
Those aren't the same triples that were on there before! Why did you get rid of the previous ken moore triples?
05-06-2010, 11:26 AM #7
Old set of triples
I had two sets (also have a set of Speedwerks). Had to sell a set to fund some other mods.......GPR Frank bought the set that was on here when I bought it from you.
It didn't matter to me which set I put on as this is just a "go out and have a good time" boat.
If I want really fast, I just put the 04 1390 in the water. Only problem is race gas is outa sight right now, even at a 20% mixture.
05-09-2010, 10:46 PM #8
Oh I see yea screw spending money on race gas...thats why im glad i can just put 93 in mine
05-09-2010, 11:35 PM #9
Whoa! There is no pain in running race gas. Its only a pain when you have to run and get it everytime you go out. Thomas you know first hand that I always have race gas on hand. lol. Buy it in bulk. I paid 2 years ago 774.40 for 220 gallons. That is about 3.52 a gallon for Sunoco 110. Last year I paid a bit more because of the time of season I bought it and the day of the week it came in. I think i was paying 4.57 a gallon and bought 165 gallons.
I do sell gas too just need to swing buy to pick it up. lol.
Back to the thread.
I like to see those triples run in the 7700 range almost 7800 in rec riding. If you were going to race it I would run it in the 8000 to 8100. This allows the motor to keep above 7600 in the corners to keep on the pipes. The worst thing to watch somone pass you on the outside because you fell out of the powerband.
05-10-2010, 08:36 PM #10
How's $10.00 a gallon sound?????
That's what I paid for the last two gallons I bought.
To be honest with you, it is becoming a real pain just trying to maintain seven of these dang things.....but there is a reason for having all of them. We have a vacation home in Florida and I keep some down there. Don't want to have to keep dragging a pair up and down the interstate.
I will call you when I get a chance as I do want to find out how to find some rpms. They might be there, but it is so hard to find smooth water up here. Have not had a lot of time to try and dial stuff in.
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
By 2007250x in forum Yamaha PWC Performance (2-stroke)Replies: 2Last Post: 08-29-2007, 03:43 PM
By dt3257 in forum Yamaha PWC Performance (2-stroke)Replies: 2Last Post: 06-14-2007, 04:37 PM
By Green Hulk in forum 4-Tec PerformanceReplies: 16Last Post: 04-07-2007, 04:45 PM
By carbuff91 in forum Yamaha PWC Performance (2-stroke)Replies: 7Last Post: 05-24-2006, 07:33 PM
By ActionR32 in forum 4-Tec PerformanceReplies: 18Last Post: 10-03-2005, 08:20 PM