12-23-2008, 12:50 AM #1
Anyone Use Pump Extension On RXT/GTX
I was thinking in spring to do either pump extension OR
Jims rideplate... The rideplate will be alot more labor/ less $$.
I saw the Riva pump extension is now avail for RXT...
Is this something I can use for my Rec ski????
I really just want to pick up 1-3 mph and I'll be happy (for now anyway)
12-23-2008, 12:53 AM #2
12-23-2008, 01:18 AM #3
Are there any disadvantes to the pump extension???
i.e. boarding, etc, towing toys, ladder, hitting knees on
Has anyone used this on the Couches?
12-23-2008, 01:13 PM #4
Looking at the install instuctions for the pump extension it looks like the plate may be easier. You need some special tools for the pump extension. Here are the Riva instructions for the install http://www.rivamotorsports.com/instr...080_pek_50.pdf
I am not sure what the gains from this would be but sure would be interesting to hear what others gained. I may just have to add this to my list of to do's.
12-23-2008, 02:11 PM #5
So basically the pump extension is just a big-assed
pump wedge (w/0 the angle).
And you have to use their "longer" ss wear ring and a longer
And the result of just having the pump further behind
the hull gives more hookup and speed???
I'm not sure I quite understand.. Does it just get the
hull out of the water more for less drag - -- similar
to what a modded ride plate would do?
You are right Gus, looks like just as much work as the
rideplate R & R..
And, I have weighted the SS wear ring option, and I don't
think I want the SS for my riding conditions.
Still got lots of cold weather ahead... Trying to plan out spring
12-23-2008, 02:22 PM #6
If you run the Riva pump extention you have to run the supplied SS wear ring.
With pump extention you will see better hookup and slight top end, not much. The ridding characteristics will change alot, and i cant really explain to you but it steers much defferent.
I have no experience on 3 seater and I dont no of any with the pump mod on 3 seater.
IMO, if you are looking for speed on 3 seater i would go with ride plate over the setback pump.
That is until someone tests and proves differently.
12-23-2008, 02:42 PM #7
After this reading and research other threads, I think
you are right Steve..
Jim's rideplate is probably what I'm looking for..
It's just more of a logistical issue to remove/send/ reinstall parts,
especially since my boats are stored 60 miles away,
and there's no freakin way I'm gonna drive em home
on these salty/icey/ crap ass winter roads...
I do too much work getting everything perfect during winterization.
I just hate to have to wait until spring to start since I know
with R & R and shipping back and forth it would be at least
a 2 week project.
12-23-2008, 02:46 PM #8
The ride plate removal is not that bad, the hardest thing i had to do was removing the ride plate holes that had been filled by me.
If you had the extra cash you could buy a used plate and have it done, and then do the install at the same time as you remove it. THen sell your plate that you take off.
THe turn arround on the plate is not that long.
12-23-2008, 03:10 PM #9
I might look for a real good used one..
I'd rather take it off and put it on all the same day or so..
that way I don't forget anything.. I've already got too many
half assed projects going already (like my street/race car that's
been apart for 2 years!).
I am just picky about my sh!t. Esp. with my boat only having
1 season on it. I'd like to kinda keep my Newish rideplate.
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