FX-1 FX-1 pump.. 144mm or kawi 650?

[LIVE2RIDE Powersports]

i read the different threads about fx-1 pump conversions. but i cant decide between the 144mm or the kawi 650 pump. i know everyone says its easier for the kawi pump but does it do the same effect as the 144 pump? i mean enough to be able to tell? plus i want to run trim...thanks for thought

 

[LIVE2RIDE Powersports]

pic

 

[Idok]

I'd pay bonzai bob for a conversion pump.........it will be much easier to resell someday if you ever wanted to...

 

[Flash-FX]

i read the different threads about fx-1 pump conversions. but i cant decide between the 144mm or the kawi 650 pump. i know everyone says its easier for the kawi pump but does it do the same effect as the 144 pump? i mean enough to be able to tell? plus i want to run trim...thanks for thought

Gonna b @ datona? Alll da FX guys wit big pumps be thare

 

[LIVE2RIDE Powersports]

if shes done by then i will be..... other wise someone will have to tow me out to the waves..

 

[Flash-FX]

if shes done by then i will be..... other wise someone will have to tow me out to the waves..

Times a tickin...Get that resin stickin...

 

[oxnard111]

144 conversion is my vote

 

[shorty]

I am in the process of putting a 140mm kawi pump in mine using a skat 13/18 large hub prop and TBM super pump cone. I have some pics I'll be posting soon.

 

[special fx]

Shorty, Make sure you address the issue of sealing the rear of the pump cone. Since the TBM and the R&D pump cones are made for the SXR there's about .160" of a gap to address. The way the R&D tail cones fit it was pretty easy to make a spacer out of the old stock Kawi cone, not sure how/if that'll work with the TBM.

Pics of spacer....

 

[Wetracer]

I started tearing my ski apart today and Gorilla and I are going to flip it over and start with the 650 Kawi pump mod. I will take pics as we go and update everyone on the progress. Mike
wetracer@northwetpowersports.com
P.S. My pump and R&D toploader are for sale if anyone needs one.

 

[sjaholic]

i've got a 144 coming my way soon. it' going to be shipped to bob. i need some idea of what prop to run, i don't want to lose any topend.
i don't need monster bottom end since i only weigh 125.

i have a complete 650 pump sitting on my shelf.

 

[special fx]

I'm working on my next ski (Kawi 650 pump) and just fit the pump into the hull. Here's some pics to give you a good look at the hull mods.

First you need to remove the stock pump shoe and then grind away the stock front pump mounting surface to make it level with the rear mount surface.

 

[special fx]

Once you have a level mounting surface, then you can work on the pump shoe area. I make a cardboard template from the Kawi pump and then mark the hull with the template as a target.

Then it's grinding time! It took me about an hour of grind, test fit, grind, test fit, etc, etc... to get the pump to fit properly.

 

[special fx]

When the pump is in the right spot, the rear edge of the pump shoe will be flush with the edge of the pump bulkhead (where the waterlines and steering cable come out) and my R&D Scoop will bolt right up. I also have a pro-tec scoop and it doesn't line up like the R&D. The R&D has a oblong rear mounting hole and that lets it bolt right up. If your using another type of scoop grate you'll probably have to elongate the mounting hole.

Just need to do a little final fitting and then glass it up, drill four new mounting holes and done....

Good luck with your's.....post pics!

 

[Wetracer]

Hey JD, mine is looking exactly like yours. I did hit foam on the curved duct area on both sides. I think I will dig it out a little further and then put a layer of glass and resin. Also I am just starting on cutting out the mounting area. Thank god I read through all the posts again. Found out I need to keep my toploader so it is not for sale. Thanks. Mike
wetracer@northwetpowersports.com
503-585-5675

 

[special fx]

Did a couple of bearing housing setups for the Kawi pump mod today. I thought I'd post this pic to show the progression.

From left to right:

1 - Stock Kawasaki bearing housing
2 - Kawi housing with the center cored out (I've found a hole saw in the milling machine or drill press is the easiest method)
3- Stock Yami housing and the newly machined Kawi core (Turned to 2.045" diameter in the lathe)
4 - Two complete ready to go conversion housings.

I machine the Kawi core for .002" interference fit and then freeze them and press the core into the Yami housing. Once the core is pressed in, I epoxy the rear of the unit to seal it. The epoxy is probably over kill due to the interference fit, but what the hell?

 

[Algonquin]

I've read all the posts I can find on the subject and it looks like the 650 conversion is a good way to go.

The motor I am building hopefully will have 62t cases, stock sj carbs, group k ported 61x cylinder, and b-pipe.

Do you think this engine will over power the 650 kawi pump?

It just looks like once one pump goes in it would be tough to switch over to the other.

 

[special fx]

It's the same pump that the 800 SXR uses and up to the 900 Kawi sitdown, so I think it'll hang. I'm running a ported 61X with Wetjet intake and 46mm carb and B-pipe and it has no problem handling it. The R&D pump cone and SXR setback prop really makes this pump come alive.

 

[sflsurfrider]

Did a couple of bearing housing setups for the Kawi pump mod today. I thought I'd post this pic to show the progression.

From left to right:

1 - Stock Kawasaki bearing housing
2 - Kawi housing with the center cored out (I've found a hole saw in the milling machine or drill press is the easiest method)
3- Stock Yami housing and the newly machined Kawi core (Turned to 2.045" diameter in the lathe)
4 - Two complete ready to go conversion housings.

I machine the Kawi core for .002" interference fit and then freeze them and press the core into the Yami housing. Once the core is pressed in, I epoxy the rear of the unit to seal it. The epoxy is probably over kill due to the interference fit, but what the hell?

wow! thats pretty impressive! what kind of drive shaft do you use? x2? sx?

 

[special fx]

ZXI 900 or 1100, they're both the same. No shaft mods required.