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That's the way I ended up going, I'm working on an update with some pictures, this boat was overhauled this summer after a rocky trip earlier in the season. Topped out at 30 upstream and 35 downstream. Although, I think that number is bit higher now. I'm not 100% certain, but is similar to this...

Calgary, Alberta

Brand new RRP Trim kit with cable, lever and all the hardware. I can't make it work on my boat, so trying to recoup the cost. $650 + Shipping from Canada.

I need to apologize for my misinformation. I followed up with the guy who built the engine and modded the pipe to fit my boat. It is a R&D Superjet pipe and has had the stinger cut and clocked to fit for my application. Anyways, the way it is setup in my last drawing has worked wonderfully. I...

I can't speak to that part. But, this is a Kawi pipe on a Yamaha engine. The bolt pattern works, the reason I have it mixed and matched like this is for the space I have in my mini boat. I'm limited to what would fit in it. Superjet pipes all seemed to be to long past the flywheel side of the...

Yes, it is. It also fits the Yamaha flange. Yeah, that's how it's setup. How do you measure the exhaust temps? With a gun or an added sensor somewhere?

Definitely sounds right, it just falls on it's face till it clears in the upper RPM's. I'll give this a go. Thank you! Just knowing the pipe model has helped with my researching. Makes sense, the head pipe has a water jacket internally to keep water out of the actual exhaust, I will try the...

Bump, anybody have any suggestions? I ended up setting it up like this diagram. It's really sluggish out of the hole, but clears out in the midrange then it's fine. Any help would be appreciated, I know lots of tuning 2 stroke bikes. Nothing about skis though.

Can anybody shed some light on which pipe this is and maybe help me get it set up? Check out the diagram I drew up, it's my best guess and a starting point of how I figured it should be hooked up. But, really I have no idea as I'm left with the two stinger fittings and the straight fitting...

Dang, definitely won't fit. Thank you for checking for me, appreciate it.

Thank you, specifically looking at the flywheel side exhaust flange to the furthest point of the expansion chamber heading past the flywheel.

Any chance you can tell me if the protec pipe has the same dimensions as the stock or close too? I have an oddball application it might work for.

Sounds good, I'll give him a call. It's a ton of fun! I've had a bunch of different toys over the years and this one offers the most smile per gallon so far.

Thanks for the input! The boat has a fairly tight grate on the bottom to stop any larger than 1/2" rocks and junk from entering the pump housing. So far, maybe 10 hours on the river since the SS wear ring and it still looks pretty good. Might be worth keeping a spare rebuildable one in the boat...

Hello, first post here. I've been browsing the forum since I bought this boat this seems to be the best place for Yamaha engine info that I've seen on the web. Wasn't exactly sure where to post this, so please move it if I got this wrong. The boat is a 10ft aluminum hull with 1/2" UHMW...