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Wanted! Riva 760 8 port cylinder if you have one laying around let me know! Any condition is fine. Also interested in other riva parts let me know what u have Cheers

Was that with factory air box?

Well then that's where I'll start, was that just stock mikuni 46's? What size spring and pop off were you running? And was that with factory air box? Sorry for the questions but they can make a bit of difference that's all. Thank you again. Ps.. I actually bought 2 of your 735cc motors. One is...

Thanks blue, I'm guessing you did the porting for me. I did pay the extra for your special sleeve cutting/porting very nice job by the way! I have a few cylinders that have been ported laying around and yours are the tits!! By far! Check! I got 760 Ada domes 37cc I think. I measured the...

just scored my jetmaniac 735, getting bored and honed to 760 now. I have laying around a ported and epoxied crank case and dual 46mm mikuni carbs and manifold. I'm thinking of putting the jetmaniac ported cylinder with ported crank case and the dual 46's together to chase some more power...

Can you take a picture or scan of that in the manual? Also I have the pump out already and impeller is off. How do you measure that? From the tip of the shaft to the tunnel? Or where the tunnel end and down to the shaft?

IV tryed 2 jet pump housing and had the same problem?

So I got a new impeller finely. I had to bash the old one off the a cold chisel and heat. I spun the new one in but it hits up the top of the jet unit I tryed shimming it at the back of the jet unit. I can get it to spin a bit but it always hits somewhere. Do these things need to wear in? Or is...

Is there an online pfd?

Okay and that's on the low? So if it bogs / wants to die as soon as you has it it mean the low is 2 lean?

Okay so today I tuned my ski a little starts fun. It drives fine although when I first start the ski and give it full throttle it bogs down then goes! Is this 2 rich or 2 lean? After it gets out the bog it's fine I can back off and give it again and it won't bog down. Only when I stop start and...

There is some wear on the shaft does not look major I don't think. Can't really see the bush all I can see is the seal is a bit stuffed

When u say richer is that like 1/4 turn richer? And does that mean both low and high need to be?

Very helpfully... But how to tell what model ski you have? I mean the engine could have been swapped in its time? Also adding an exhaust and air filter would this drasticly change those fuel settings?

I have a js440 it was compleatly stock and slow. I added a aftermarket dayjon exhoust and and air filter to try and get more power. It defiantly feels like it has. But after I fitted it I would get up on the plan and it felt like it was backing off then going again then backing off slightly. To...

How do I check the bush? It's inside the pump? How and where would I find new one?

Okay so I had the pump off today I bought the bolts and shims from the wreckers. However... After I removed the pump I found there were no shims. I cleaned off the corrosion off the pump mounts and tryed to fit the shims.. If I put the shims in it makes it worse! I'm thinking it's had a thick...

Any one know if they can be aligned?

Oh yeah I'll look around for one. I don't think it has a bump it almost looks like the housing is sitting to low and need to be lifted up some how? I havnt pulled it appart yet so I'm not sure how it works

I bought a js440 and I keep finding things wrong with it. The latest is the impeller is close and just hitting the top of the jet unit. The bottom of the jet unit and the impeller has about a 3 mill gap. I spun the motor and the gap didn't shift so it's not a bent shaft. What could cause this to...