Good luck with the project. Keep us posted on the repower. The boat will need a re shafting for use. The current shaft is most likely 1 3/8 or 1 1/2. Either one will not work well with 350+ HP & and 2:0 gear. The boat will run like a rabbit with a 23 X 24 four blader. That will require 380 HP.
Thanks guys for all the support, the boat is in south Carolina right now.
trying to get it back as soon as I can,
Capt. Larry, I don't want the rabbit I want the old beagle chasing him, no back tracking or loosing the scent. I am a 15 knot guy so the 1-1/2" shaft will probably be ok.
looking at a few RTO'S right now mostly cats 300hp or under. the old boat is under contract so until it sells 8 to 9 knots here we come
Fine looking boat. A friend of mine had a 35 that he used as a charter boat for years. I always admired that boat. It's nick name was "sling queen" cause it had a tall tower and would sling you all over the boat in rough water. It was top heavy. I would have taken the tower off if it were mine.
The original power in my JC was a 320 Cat-T. The boat had a 23 X 23 propeller she ran 16 knots. I snapped 2 & cracked one 1.5 shafts all A-22. With 1.5 shafting based on my track record I would not use a propeller larger that a 22 X 21. You could still go with 300 HP but you would need a 1.75 gear to keep the shaft in one piece. JCs need large wheels to perform well. The larger wheel gives you better control over the vessel large keel when running in a sea and carrying load.
On my repower with the 370 Yanmar I went with a 22 X 19 wheel. The boat ran well in the beginning, but once loaded up and in a sea she lost speed & performance. I pulled out the 220a 1.75 gear and replaced it with a 2:0 220a. My wheel went to a 23 X 21. The performance was a world of difference and the speed was excellent.
Shop for a nice light weight diesel in an in-line 6 configuration it will give you the best performance.
the plans include a repower of some kind to get the speed up a bit not looking for 20+ knots (would love to just not in the budget) then goes to general clean up and repairs and hopefully a lot of fishing. just sold my twin gas sportfish so going from 20+GPH to single digit GPH sounds good to me.
yes I know diesel repairs are far more expensive than gas but it pays to have friends in the trade!!
what they were asking for the JC and what they got was a lot different.
and forgot to mention I will be going to 1-3/4" shaft (Capt. Larry) take a look at the blue seas 31' in the found boat section, any questions about that one PM me.