Yes complete transmission is removed, homemade drive system installed.
The TL engine is just one of a few options. They are still in the early stages of designing a new boat, will be for 2018 probably.
The son of my friend is now European champion with his GSX-R1000 engined boat, he sold the boat and now they think about making a new one, using a TL1000 engine this time.
Since the rules don't allow EFI (the GSX-R engine has a bank of Keihin Flatslides for this reason) he asked me what are the biggest available carbs suitable for this engine. I told him the VTR1000F has 48mm CV's, but surely there must be other carbs available?
Anybody has any experience with carbs on a TL engine?
first find out what carbs you have exactly. On the left side of the left carb body there should be a code, 17D30 for example.
With that code and the factory service manual (which I have here) we can find out what emulsion tubes and jets etc should be ordered.
I have a set of 38's from a 750M (for parts), the code on the carbs is 17D30, and AFAIK the emulsion tubes are still original, with 1 X 1 and 3 X 2 holes. Code on the tubes is 64B and 0-B (I think, eyesight is slightly affected by beer consumption). Hole for the needle is the smaller one like on your new tubes.
powerjet, idle adj. cable, choke knob on carb bodies, 38mm, all the signs of being 750 L/M carbs. 750W has choke lever on handlebars.
They could be from a USA bike in which case the jetting is completely different (127,5 main jets for example).