Thread: 99 GP1200. Pump Upgrades
11-17-2006, 09:57 PM #1
99 GP1200. Pump Upgrades
Hi guys, I am new to this site. I have read a few posts on here. There seems to be a lot of knowlegable riders.
I have 2 - 99 GP 1200s. Both have Wake-up Kits(Hi Com Heads, Reeds, Flame arresters) Both Have Riva Ride plates & intake Grates. I am pretty sure I need to replace some Pump Parts. I do alot of River riding.(suck in a few rocks)
Would U guys replace Pump parts with Stock,,,, or is there some better upgrades??
11-17-2006, 10:11 PM #2
For general rec riding I would stick with the stock pump you can clean up some of the casting mismatch and remove the roughness of the casting to improve holeshot. also helps to eliminate the spray spout and remove the siphon tube fill and blend the holes inside the pump and add an electric bilge pump . All these will aid in performance and hook-up of course finding the right prop is also key to overall performance.
Welcome to "The Hulk"
11-17-2006, 10:40 PM #3
Sounds like a good winter project. I am not pushing any major HP on these Boats. But, they both hit 7100 - 7200 on the tacks.The right Prop!!! What would one suguest?
I definetly agree with the Bilge pump. I do ride very aggresive, usually alot of water drains when loaded on the trailer.
11-17-2006, 10:46 PM #4
If your in water with alot of debris, maybe concider a plastic wear ring so that it's easy to replace. I know mine was about $200 for an OEM unit, and i'm pretty sure we have the same pumps. I think Island racing sells them.
11-17-2006, 10:53 PM #5
With your current mods I would reccomend a Solas YD-SC-XO impeller
You might also want to give Duckbill drains a try they also help remove water from the hull. However they can be a problem and leak if you leave your ski moored in the water for extended periods of time.
Last edited by OsideBill; 11-17-2006 at 10:57 PM.
11-17-2006, 11:45 PM #6
Yes the XO is a very good prop and would be my recommendation as well. Wouldn't read to much into you tach readings, stock speedo and tach are very unreliable. You could get a tiny tach if you are concerned. Rev limiter are set at 7050 for stock CDI.
If you go with the plastic wear ring on e-bay jkwaterparts (user name) has them for $115US that comes with the housing and wear ring ready to go, he also has pump repair kits at $55.00 has all bearings and seals for your pump and intake ducting oil seals and intermediate housing seals and bearing etc. Just ask him as most times he doesn't have the 97-99 pump repair listed. Thats where I got mine from and took 5 days to get here too NZ, great service.
Here's a link http://cgi.ebay.com/ebaymotors/YAMAH...QQcmdZViewItem
Last edited by GPKiwi; 11-18-2006 at 05:08 AM. Reason: e-bay link.
11-18-2006, 02:39 PM #7
Thanx Guys. I emaled jkwaterparts. Just waiting to see what he has. Where's the best place to get the best bang for the buck on a Impeller?
U know, a few months ago I was going to Buy a RXP,,, then I read the posts & forums on another website & thought Woop de do,,,,so they are fast. I have more fun cutting & carving & setting up a little race track where the kids & I play. Its hard to beat these GPs on a tight course(when there R running good Both my 1200s have lost top end. My GP800 with Wake up kit Protec Grate & Plate, sponsons, Will run neck & neck with both these 1200s. I know the motors on these 1200s are good. Just to many yrs of River running.
When your filling holes & spaces around the grate,,, are U using silicone,, or Marine tex?
11-18-2006, 02:58 PM #8
I have one looks brand new except has some dings on leading edge it can be sent to Impros www.impros.com for repair I think repair runs around $50 but you need to check these retail around $199 new I want $50 for it + shipping. I could ship directly to impros if you wish and you can work ou the details with him. you will need the special wrench for install also. I also have the little nose cone for it too
Last edited by OsideBill; 11-18-2006 at 03:04 PM.
11-18-2006, 03:14 PM #9
hey Bill,, I can do that. Those Pic's are a familiar site
Lets see,, what the best way to do this. I do have a Paypal account!
I would rather have U do all the footwork regarding IMPRO'S.
U could send me a bill for 100(USD) & then B 4 U ship the Prop,,, includ another bill that will include shipping & the balance of what IMPRO's charges U.
How does that sound?
11-18-2006, 03:37 PM #10
I will send it up to Dave at Impros when it comes back I will let you know and we can do all the paperwork then, it will take 1-2 weeks at Impros how does that work for you?
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