Question.....
 

Need some input guys. I have a 2000 29 Outlaw. 454 mpi's with labbed 24p props. Last year I was running 72 gps. Had one of the drives replaced and now run 69. The rpms seem to be about 200 less. Same drive ratio at 1.5. I was getting about 4800-4900 on the tach now I get 4600-4700. I put my labbed 26's on and run 4500-4600 at almost the exact same speed as the 24's. Any thooughts? Thanks.


Also, any thoughts of taking 4 blades off and putting a 25p 3 blade?

Re: Question.....
 

I have a 2001 302 with same engines and dives I turn 24 4's at 4900 with no trim on the drive and 5100 with full trim. I am running about 68 GPS so your speed may be about right for the rpm but where you lost 200 rpm I have no idea. Fuel, water conditions, temp, load ect may have something to do with the loss.

Re: Question.....
 

THE 3 BLADE 25 MIRAGES WILL BLOW OUT BUT YOU MIGHT PICK UP YOUR RPMS . ARE BOTH ENGINES DOWN 200 OR JUST ONE..

Re: Question.....
 

Both are.

Re: Question.....
 

The Mirages are good props for that boat, you just need to keep the rpm's below about 3300 when getting on plane or they'll blow out.

Re: Question.....
 

Have you tuned up the engine's yet?

Re: Question.....
 

Engines are tuned. Boat runs very well. Just changed out the bad drive and since then this situation started.

Re: Question.....
 

IF IT IS BOTH MOTORS I DON'T THINK IT'S THE DRIVE
IF IT WAS IT WOULD BE THE MOTOR WITH THE NEW DRIVE.
DID YOU DO ANY PROP WORK?
NOTHING NEW SINCE LAST YEAR?

Re: Question.....
 

are they mags?

Re: Question.....
 

Yes they are mags. Adjusted the drive stops. Looking at the drives they didn't seem to be even. Brought rpms up a little with the 26's on. Seemed to run better then before with trim at about 1/4. Going to put 24's on Friday and see how it goes. Maybe that's all the problem was. Any tricks to adjusting the drives or just trial and error?