View Full Version : prop sizes
papadad
10-12-2007, 12:50 PM
i have a 22 foot 1986 donzi classic. right now i am running a 19 pitch clever prop. waht prop would you suggest for more speed? it is a 350 cubic inch motor and 350 hp running about 5000 rpm's and reaching speeds of upper 50mph
mrfixxall
10-12-2007, 01:18 PM
i have a 22 foot 1986 donzi classic. right now i am running a 19 pitch clever prop. waht prop would you suggest for more speed? it is a 350 cubic inch motor and 350 hp running about 5000 rpm's and reaching speeds of upper 50mph
22 pitch turbo 2+2,this should put you at around 62 mph
BigGrizzly
10-12-2007, 04:43 PM
DI would not the 2+2 Turbo There are much better props for that combination. I would do the TXP or Turbo I in 23 pitch. The 2+2 turbo was designed doe outboard with small power. I just doing a test comparing several props and that one was not that good. Budman has the same boat and runs a 23 TurboI
i have a 22 foot 1986 donzi classic. right now i am running a 19 pitch clever prop. waht prop would you suggest for more speed? it is a 350 cubic inch motor and 350 hp running about 5000 rpm's and reaching speeds of upper 50mph
You are going the right direction dumping the cleaver, I ran one on my 22 SB to me it was an evil prop. I now run a Turbo Ultima 23" 4 blade, for your setup a 23 I feel would be to much as you are only turning up 5000 with a 19, a 23 would suck your RPM down to the low 4's NG. Just for a starting point try to borrow a 21" Merc Mirage the is the same wheel I ran on mine before the stroker motor. My original setup was a 300HP Tempest, supposedly 300 PSHP not sure if that was true. It would do 61, several thousands $$$ later I can hit 65.5 on a good day.
Phil
BigGrizzly
10-13-2007, 09:22 AM
Mop may be closer to the real answer, but I wouldn't go the M
+ route.
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