99 tr21 prop help

[denneyboy81]

I have a 99 tr21 with a 225 optimax turning a 25p tempest plus that has some wear. I can turn 5400 rpm but boats only running mid 60s loaded or not. Also has a 6inch jack plate at 2.5 prop to pad. What can I do to make the boat run in the 70s

[Jason Hale]

First thing I would do is send your prop to Mark and see what it does when it comes back.

[Savage]

225 HP Standard Optimax on a 1999 Tr-21 will run 70 MPH ALL DAY LONG with a 25P Trophy Plus.......2-men Tournament loaded.

[Onebass]

10 in plate and a 25 trophy, pretty dinged up. 2 poles. She would run if I would let her

[tsurratt51]

I have 99 tr21 3.0 225 25pitch no jackplate just can't get out of hole. Would the 10" plate be the best. Any help would be appreciated.

[Savage]

8"-10"

[mdtritn21]

First do everything that's listed in this thread about fuel lines. http://www.bbcboards.net/showthread.php?t=22490 It sounds more like a fuel delivery at high speed problem.

[MYRX]

My 99 TR21 has a 12" jackplate and 26P Bravo. She does 74-76 when I have the guts to drive her. 225 Yamaha rebuilt in 2015.

[Savage]

I would suggest NOT going with a 12" jackplate with a Mercury Optimax motor.

[pablo_velazquez]

I'm having the same problem . Tr21,99,merc 225.
Let me know what prop you end up getting

[jrspop]

Like savage says, that is a 69-70 mph loaded with 2 ppl all day long. I ran an A45 trophy and 26 Bravo 1XS with my 225 opti, 10" plate

[pablo_velazquez]

What did you end up doing, I have the same issues

[pablo_velazquez]

Anyone run a 25p tempest plus?

[Savage]

I had the same motor......25P Trophy Plus is what you need, and will do 70 MPH, once you learn how to drive the boat.

[clayc]

My dad has a '00 TR21, 225 Opti, 25p Tempest+, 2 1/2 ptp, 10" jp, prop has not been worked,, 68-70 loaded heavy all day long.

[mdtritn21]

25 trophy plus

[GLOCKMEISTER]

I used to run the same motor back in the day on mine. The 25 trophy plus it the way to go. I’d have Mark Croxton tweak it too.