switching trs to bravo-best install height?

[johnnyexcal]

hi,im a new member with a new boat. have a few questions concerning new project. plus we need a little activity on our forum. i have a 24' am wondering best location for drive. center of gimble housing is 19" fom bottom of v on the trs. what should i install this bravo at? i have to many conflicting answers.is it true to install bravo cavitation plate 1" above bottom of v-which would put prop about 3" above bottom of v ? im sure someone else has done this. any info would help! i also have complete trs assembly{with merc II/electric shift} for sale if anyone interested-worked great all summer. thanks guys! excuse my sloppiness not to good with typing. boat has a small block if need to know.

[jdub]

I would think if your prop shaft is 3" above your keel (V) it would cause alot of problems. Did you mean 3" below? A Bravo is something like 21 1/2 to 22" from input (crank) shaft to prop shaft. If you set your X dimension at say 18" this will set your prop shaft 3 1/2 to 4" below your keel. I would think this is were you need to be. It worked for my 27 excalibur anyway

Double check my dimensions, but I'm sure someone will chime in with the exact numbers.

[johnnyexcal]

thanks for catching that i meant 3" below - thank also for the advice

[jeff1000man]

Good luck with your project.

[excalibur82]

I am in the middle of doing the same swap on my 27 speedster. What kind of speed gains did you get out of that ? My buddy told me with a notched transom you want your x-dimension to be about 19 3/4 to 20 1/2 could that be right ? It sounds a little high.

[jdub]

That sounds way high. You might run into handling issues, but you could always throw a spacer to it. PM "JERSEYDEVIL" here on the board and he can give you exact X numbers. He bought my 27. If I remember correct it was about a 18" X. Put my prop shaft 3 1/2" or so below keel. As far as speed. With about 550 hp, Bravo 1 1.5 gears, stock 26 Bravo four blade prop, three guys and 1/2 tank gas it did 81 on GPS.

Oh and a stripped cabin

[excalibur82]

I have all the parts and pulled the motor but I don,t know witch direction to go. Who did you have to glass the transom ? I found an adapter plate made by outdrives . com. Do you know anyone who's used this? And do you think it will work

[jdub]

I did the glass work myself. The adapter plate may work but I don't think it will allow you to raise your X.

[excalibur82]

Did you replace the whole transom or just patch it in and how long did it take

[jdub]

I did the whole transom, but you could piece it in. You could do it over a weekend no problem. I'm getting ready to do it to my Corsa soon.