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Does anyone perhaps know the exact length of the stock driveshaft when the coupler is removed. Tried searching everywhere but no joy yet. Tks very much

Background......Engine is a JM781 dual 38's, prepped by Blue some years ago. It has run flawlessly in both surf and bouy chasing.. We did a river dash around 50 miles 2 weeks ago and every now again we would go WFO for a few minutes and then back off a bit ....just before the end my ski died at...

Hi guys A few of us did a long range river dash a few days ago....full flooded winter river upstream 70 miles with 2 refuel stops... Ski ran very well but the last 10 minutes we were WFO and after running flawlessly (for years) my ski just died. Weather was reaaly cold...8 degrees celcuis. I...

Hi My bendix trashed the one flywheel with the 4 separate magnets....can I bolt on the one with the full circle magnets...both are from 62T motors. I already put in the full circle one and the ski starts up fine...just wondering what the difference might be between them.

Hi guys This is likely a question for the carb tuner peeps and everyone else who know enough about this subject to offer insights. The newest Jetsurf motorised surfboards since 2021 all have DFI fuel injection on the 100cc single 2 stroke engine....its basically a small jetski and I was...

and should I mount them flush with the bottom lip or half inch up from the lip (don;t want the dreaded chine wobble on flat water)

I have pulled more than a few bendixes and repaired them with bits and pieces of others over many years...I understand 99 % of how the bendix does its job, but I cant fathom how the centrifugal weights with that crappy liitle spring helps it to do its job.....I am tempted to delete that whole...

Too lean ?

Hi I am getting ready to do a top end refresh and just realised i never ordered a TPE 1105 cylinder base gasket.....I have a spare DASA base gasket for my DASA 900, ....anyone know if it will work.....dont want to strip motor if I have to wait 2 weeks to get a TPE gasket from the US tks a mil

Anyone know where to get new two sealing outer rubber bands that get squeezed between the front and rear cups.....they are not typical o rings i.e. rounded..these have square edges...any advice very welcome...thank you

I bought a krash 50kal hull which had the pump included.....dropped in my DASA900 bpioe, etc, and it feels way over-propped......engine can’t pull into the upper range except on flat sections.....looking for instant hit and rev-ability for surf riding, hard turns, white water mounting...

Does the KRASH 50CAL RTR trim system work with or without a spring to hold the nozzle firmly down.....mine came with nothing in place, but I have yet to ride it after just completing my build....any pics would help...tks

need some decent opinions please.....Is the performance of a F B pipe significantly better than a Riva pipe bolted to a 900 DASA dual 48 mm Novis, MSD enhancer. (and at what RPM) I have a spare Riva in hand but would still need to find a clean B pipe (if its waaaay better) to drop into my...

Hi In the pic you can maybe notice that the jbweld is slightly lower than the surface of the casing where the port job has taken away almost all of the alumium...its the same on the other piston hole.....leak developed and caused a runaway condition.....question is ...which sealer to use to fix...

I am swoping out my stock 144 pump and putting in a new 148 H2O setback.....thing is I really really dont want to take the motor and midshaft housing out and use my cold fusion alignment tool just get the new pump aligned even though I suppose its the " right way to do it"....anyone have a...

Hi I have a trim lever next to my start stop housing on a normal straight handle bar setup, however on my RRP taper bars the start stop housing does not fit on the bars where I need them in order to fit a trim lever Do i have to grind / ream the inside hole in the start stop housing until it...

Is this wear pattern abnormal....any ideas on what caused this..its on an H20 148 setback stainless pump

I was looking to buy an 1100 short block and did a lot of research before pulling the trigger .eventually spotted his ad and we bounced a few pms after which i felt confident to part with my cash in exchange for his high dollar baby to be then sent to a fedex collect address in New York, after...