Dayum these are BLINGIN!

I heard that these UMI couplers are a must have!

1_UMIcoupler.JPG
 

Matt_E

steals hub caps from cars
Site Supporter
Location
at peace
Please tell me you're not going to run that Kawasaki 650 Intake manifold on that PV Lamey engine.
 

dbrutherford

Parts Whore
Location
Fairmont, WV
That carb would work better on an ATP manifold... that Rivia is just a Kawasaki 650 manifold! You Yamaha guys just can't get away from the Kawies... we were the very first skis anyways.

Damn Matt already beat me to it!

There is a scratch on your couplers too, not too blingin there...

Let's see the manifold too, I beter it had to be butchered as well.
 

YAMA CAT

Catnip Junkie!
Location
B'ham, AL
Single Carb on a Lamey? Too cheap to spring for the second carb? j/k


BTW - It wasn't difficult to deduce Who was getting the power valve when Gildo posted the pictures. Doesn't a rocket scientist to figure that out.



Looks good! :purr: Get that thing together and lets ride! Or just one of those fancy boys that are all talk.
 
I haven't heard anything negative regarding running the Riva. I have even heard that someone couldn't tell a difference between running the atp and the Riva. Does anyone have any real world experience with BOTH? If so, let's hear the comparison. Don't just say..."run a real manifold."
 

Matt_E

steals hub caps from cars
Site Supporter
Location
at peace
I ran that intake setup you got there (with a 48 Full Spectrum) on a ported 760 last year. The carb was jetted right, but wide open runs longer than 5-8 seconds were a no-no. You could feel the RPM start to drop after that.
The cylinder had some nice scoring at the end of the season.

When I recommended a "real manifold", I did so because I wish I had.

I have not run the ATP, but contact njfl. He's running one on a big ADA stroker.
Also, ask Supertune.

IMHO, you're making a mistake running that manifold.
 
Single Carb on a Lamey? Too cheap to spring for the second carb? j/k


BTW - It wasn't difficult to deduce Who was getting the power valve when Gildo posted the pictures. Doesn't a rocket scientist to figure that out.



Looks good! :purr: Get that thing together and lets ride! Or just one of those fancy boys that are all talk.


I got the white boat back together, but have something in my ebox that I need to take care of. That shouldn't take more than an hour or so at the water.

I still need to get my nozzle bored and my flywheel machined for the black boat. I have all the rest of the parts for it now. I need to put in my footholds and turf it too. I really don't have a lot of time to play right now, but I am looking at possibly taking a month off in about 4 or 5 weeks. I should be able to get it all together by then.
 

njfl

X-H2
I haven't heard anything negative regarding running the Riva. I have even heard that someone couldn't tell a difference between running the atp and the Riva. Does anyone have any real world experience with BOTH? If so, let's hear the comparison. Don't just say..."run a real manifold."

Crammit and I have been discussing the differences between the Kawi single (Riva) and ATP single. He pointed out (and I agree) that there is likely not a noticeable difference. In fact, due to the smaller runners in the Kawi intake, if either, you might even feel more power in that. However, I would suspect that that effect would be in the smaller cc motors moreso.

I don't think anyone has done a back-to-back comparison though. I'm running the ATP single on my 860 Team Scream in my Waterdawg hull this season, so maybe I'll do an experiment.

Comment: I do believe that dual 48's will provide a better hit than a single 48, as you are providing constant dedicated flow to each cylinder instead of having the flow of the single carb switch between two different paths.
 

YAMA CAT

Catnip Junkie!
Location
B'ham, AL
I got the white boat back together, but have something in my ebox that I need to take care of. That shouldn't take more than an hour or so at the water.

I still need to get my nozzle bored and my flywheel machined for the black boat. I have all the rest of the parts for it now. I need to put in my footholds and turf it too. I really don't have a lot of time to play right now, but I am looking at possibly taking a month off in about 4 or 5 weeks. I should be able to get it all together by then.


That's the same old story you have been saying for months... blah blah blah
 

njfl

X-H2
The carb was jetted right, but wide open runs longer than 5-8 seconds were a no-no.

Agreed, and I think that applies to the ATP as well. I think you have to decide what type of riding you like to do.

But, on some of these big cc motors, I think most people would have a hard time riding more than a few seconds WOT. Take a moment and count to 5 seconds. That's actually quite a long time.
 
as i recall, when i put the 2 manifolds back to back, the riva manifold has wider openings, than the kawi manifold, where it meets the adaptor plate.

if you were to try to widen the kawi manifold to the width of the riva, you would grind right through it.

the bolt patterns are the same, but thats about it.

.....as i recall.
 
This is the setup that Brian at Virgin recommended with the single 48 Novi. I don't plan on extended wide open runs on this motor. It's built for the bottom end hit! I went on Brian's recommendation regarding previously built motors because I'm not looking to experiment. I'd rather ride than wrench.

Oh, and Barb, I had two boats to put together. They were both stripped to the hull. As I said, the white one is done except for figuring out an electrical issue. This ebox is the same one out of my old square, and it did the same thing near the end of last season. All I should have to do is swap the coil or cdi......one or the other.
 
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