Honwave T38 Transom height and motors

[DumperDriver]

I have the trim pin one hole away from being completely vertical if that makes sense. Not sure if this means its trimmed in or out

Thanks for the info. Going to assume your running one hole out from nearest the transom then. I’d call that position 2 and also say that’s trimmed quite far in...all depends on transom angle though.

Yep, position 2 it is then. I've never tried 3 and 4...maybe I should..it might go even better

[harrison]

Yep, position 2 it is then. I've never tried 3 and 4...maybe I should..it might go even better

Yeah, definitely worth a try.

Keep trimming out one hole at a time till prop loses grip, then trim back in one notch.

Think our Suzuki ran well on notch 3 and 4 on both our Zodiac and Aerotec boats.

[Bigplumbs]

Well for the first time I got the Cavitation issue and could not get on the plane.It was with the T38 with me and her indoors in it and the 9.8 hp Tohatsu 2 stroke........ It was fine going one way but later massive cavitation. I put the trim from position 2 to trimmed in all the way at position 1 and all was OK

First time it has ever happened to me..... Most odd

[cpt-cod]

Hey - thinking of a Mariner 20hp EFI 2019 model.

Does anyone have one and di they ventilate a lot with the t38 air deck.

Worried about them as it's a good engine but concerned about the length.

[ChrisParish]

@harrison has that setup. It does ventilate a bit but if you trim it in it runs fine.

[harrison]

Yeah well summed up Chris....”it does ventilate a bit but if you trim it in it runs fine”.

Would I recommend running a current Merc/Mariner 20 on a T38......No

Excessive ventilation more a foible of the hull rather than the motor, but they just don’t work that well together. Motors with a longer leg and larger AV plates perform more consistently .... like the Suzi 20

All well documented in this and other threads.