PDA

View Full Version : Prop selection 1992 PS205


TXMCfan
04-19-2011, 05:25 PM
Can anyone help me understand exactly what prop would have been OEM on my 1992 PS205? Engine is 351 HO with 1:1 trans. Prop that is currently on it is silver, three blade and is stamped MACH MASTER 13x13 LH Thanks!

east tx skier
04-19-2011, 05:29 PM
Your OEM prop was a 3 blade NiBrAl OJ legend (13x13x1).

TXMCfan
04-19-2011, 05:44 PM
Thank you. How do I know if the pitch is correct and does it make any sense to go to a newer style 4 blade OJ?

gotta_ski
04-19-2011, 11:59 PM
The first number is the diameter. The second number is the pitch. As eastie said, the size is the stock size. Unless you're trying to win a speed race or weighting the boat down with a bunch of ballast, the stock should work fine. It sounds like someone upgraded to a stainless prop at some point. Nice upgrade.

As far as upgrading to a four blade, the other guys on here can chime in. Everyone who's called Eric at OJ Props seems to have had a great experience. I'd call him and see what he says.

BrianM
04-20-2011, 10:59 AM
Call Eric at OJ. I am personally not a fan of the four blade props. Now the new CNCd three blades will make a huge difference over what you are running now. A 13x12 or 13x11.5 OJ XMP three blade or Acme 541 three blade will wake that boat up performance wise.

Try before you buy. Call Eric and have him send you a few, try them out and keep what you like and send back the rest. You won't be disappointed.

etduc
04-20-2011, 12:05 PM
Can anyone help me understand exactly what prop would have been OEM on my 1992 PS205? Engine is 351 HO with 1:1 trans. Prop that is currently on it is silver, three blade and is stamped MACH MASTER 13x13 LH Thanks!

Acme 541, makes a huge improvement. It is not just the number of blades. It is how they are built. I have a remanufactured, and like new 541(used one weekend) for sale if you're interested. PM me.

Double D
04-20-2011, 01:53 PM
Thank you. How do I know if the pitch is correct and does it make any sense to go to a newer style 4 blade OJ?

Check with Eric and OJ Props. I did because I wanted to get a quicker pop out of the water and have been pushing a 3 blade around for 10 years. I have a 1994 PS 205 with a 350 Indmar, 275 HP, with 1:1 transmission. He recommended and sent me a 13 X 13 LC 1" FORCE 4-blade that I just got last week and have yet to try it.

My goal, weather permitting, is to take the boat out with the 3 blade and run some timing and speed tests. Pull the boat, replace the prop, and do it again. From there I will decide if I want to buy it.

east tx skier
04-20-2011, 03:29 PM
Both OJ and Acme make great CNC'd props.

This can provide some insight to your application as well.

Prop Test (www.tylerskiclub.com/proptest.pdf)