New Prop not getting full WOT RPM

[Jbart19]

Bman, I have the same 15x15 TP prop and was using it on a similar cruiser but with the 5.7. My experience is it holds great and handles awesome at low speed, but I think you will be dissapointed in the WOT RPM reading. It is a very heavy prop and has pretty aggressive cupping. I have 2001 Glastron GS 249 and it only spun up to 4100 RPM with just myself in the boat. I switched it out for a SOLAS RBX HR4 14.5 x 14 and jumped up to 4600 RPM with 3 adults and a bunch of stuff on board and a completely full fuel tank. The SOLAS prop was noticeabley lighter than the TP and a bit cheaper. Good thing is they use the same hub, so now I have great backup I also had great help with planing by adding Smart Tabs trim tabs. Easy install and noticeable difference in both hole shot and handling.

 

[bman1bpm]

Finally got out on the water again with the new prop. Turning point hustler 4 blade 15x15 it got me to 4400 rpm with just me and 32 mph. Id like to get closer to 4800 but it ran really well. Definitely better than the 19p I had before. The 4 blades got me on plane really quick. I'm going to install some trim tabs this winter though.

 

[alldodge]

Maybe if you ever find a 15x15.25 3-blade, give it a go, should bring your rpm up

 

[dan t.]

The prop you should try is the Quicksilver 16x16, these will outperform any15x17 as far as holeshot is concerned and will stay on plane at lower speed,.

 

[Scott Danforth]

I would still go back to the motor and check compression and make sure a flap didnt drop to the bottom of the y-pipe

wont even try to compare my ole 19' SeaRay with your 23' boat. however if your hole shot is where you need help, I would try a vented 3-blade prop.

 

[Bikestdy]

Turning point hustler 4 blade 15x15 it got me to 4400 rpm with just me and 32 mph. Id like to get closer to 4800 but it ran really well.

Sounds to me like you need to step down to a 13p 4 blade in the Turning Point to bump up the RPM so that you can attain the max 4800 RPM.