SN Superjet fix and improve build

[lcgordon]

We’ll my piss poor method of sealing the ski did not work. Rode for about an hour and about 2-3 min of drain time to get all the water out. I would guess another gallon or 2.

Has anybody had any luck if trying to jam silicone or 5200 in the cracks on the bond line from the outside. I think it’s just the rear of the ski. The way I cut it out I could not get to it to seal.

Also I’ll prob never get it perfect so was thinking one of the ball drains. Any body have any luck with the versi plug R or the thrust inovovations mini ball. Also jet maniac says he sells a versi plug mini ball which screws into a 3/8 in hole which I already have but I don’t see them online so not sure if they still make them.

 

[lcgordon]

I filled up through the drain holes with the hose and tilted it back. Most of the water came out of this area. And some out of the back hole. Gonna try to epoxy these up and try to get some 5200 on the bond line in the back.

I also bought from jet maniac some versi plug minis. They screw right into the hole for my drain that I drilled. So water can come out when I ride.

 

[lcgordon]

Got these versi plug micros in from jet maniac yesterday. They are 3/8 so they went right into my previous holes. I think these will be awesome.

 

[lcgordon]

Loving the ski,
Seems to work really well, The new plugs seem to work well. Ski still feels light when jumping after it has been in the water.

Still a bit rich on the bottom, Takes some cranking to start it up in the water and have to hold it wide open. My question is can you really hurt anything by going to lean on the pilot? I kind of want to keep leaning it out a lot and see what happens. Im currently 70 p and about a turn out on low screw. When the ski is out of the water it starts first bump. I will also say i know you are supposed to turn the low end by turning the screws in until the ski revs up then back off 1/4 turn. My ski will not do that. It eventually dies when you get under a half turn but the idle never really raises. I would think im too rich but im not sure. It seems to get loaded up really easy if I put around on it like in the no wake. Even for a few seconds it has a hesitation coming back out of the hole.

 

[Myself]

What type of flame arrestor and what popoff? Sounds like maybe you need to raise popoff.

 

[lcgordon]

What type of flame arrestor and what popoff? Sounds like maybe you need to raise popoff.

Stock flame arrestor and don't know pop off. I am a bit confused with pop off so ill ask my questions.

I had read somebody said at my elevation 5280' go from stock 115g spring to 95g spring. Anyways that is what i did.

I have done some research and lots of people talk about pop off but if you go listen to watcon guy he says pop off testing does not really matter. I forget his exact reason why.

Looking at mikuni charts I have 1.5 n/s and 95g springs i should be at 43psi. From what i have looked at you cant just raise pop off you need to go up to the 115g spring correct to 55psi? Or i could drop to 1.2 n/s and down to a 65g spring and go to 47psi. Which is pretty expensive just to try.

Basically should i just go back to the 115g springs? I have new ones they came with my kit. And if you can just look at the chart and there is no way to fine tune adjust the pop off why even test it? Just know what spring and n/s size you have and change what you think you need to change.

Sorry if this post is totally ignorant but i really dont know. Im a moto guy and i know how float bowl carbs and how they work and not so much diaphragm carbs.

oh and can i just pull carbs off and put them back on if the gasket looks good or do i need a new gasket? the gasket is brand new.

 

[Myself]

If the gasket is fairly new and doesn't tear it should be fine to re-use. Try using the stiffer spring to raise the popoff. Most Yamaha's run a fairly high popoff. Also, if you start closing off the low speed and it dies out then the adjuster would seem to be working........meaning passages are not clogged. Lazy response and having to give it throttle in the water means something is not quite right just yet.

 

[lcgordon]

If the gasket is fairly new and doesn't tear it should be fine to re-use. Try using the stiffer spring to raise the popoff. Most Yamaha's run a fairly high popoff. Also, if you start closing off the low speed and it dies out then the adjuster would seem to be working........meaning passages are not clogged. Lazy response and having to give it throttle in the water means something is not quite right just yet.

Thanks I will try the 115g springs. It should not be clogged. It all went through the ultra sonic cleaner multiple times.

It has good response off the bottom if you keep it cleaned out. If you slow down for a few sec then it can need to be cleaned out again.