prop for 88 Martinique

Hello everyone. I couldn't find much info on props for my boat elsewhere. My boat has a 13x13 prop. It has a 351 engine. I would like to first find out if the prop I have is the standard size for my boat. I have a hard time getting the boat to plane when there are alot of people riding with me. My boat is a closed bow so I can't move people forward enough. I am happy with top speed(44-45), but would like better performance. Maybe trim tabs? I really don't want to put holes in my transom. Any sugestions will be greatly appreciated.

I owned a '87 Martinique OB with a 240hp 351 PCM (I sold it 12 yrs ago). The original prop was a 3 blade 13 x 12. I believe it was a Federal prop. You may beable to get more info from MWCC. I also had a 13 x 13 that I used as a spare. Both props performed well for salom and barefooting.

have you tuned-up the motor lately?

44 at 4400 isn't bad. With a tune up and the 540 it should improve. Everyone that runs them states a improvement.

For the prop, I'd go to Delta Prop who is one of the sites sponcors. (they have a banner or go to the "links") Give them the discount code.

The code is on their banner.



Ok, who are the "jokers" you went to school with? UW Eau Claire? I've been going up all my life (my grand father bought land up there in 1940) so I do know most of them!!!

Conan wrote: I have been there many times on snowmobiles.

None ring a bell but you are younger than I am!!!
Snowmobiling to Weasel's??? - or did you have women with you!!

Hey conan, i've got the same boat as you (but an O/B) and have also been looking to reprop. acme guys recommended a 542 when i spoke with them awhile back, but i'd like to know how the 540 works for you. post your results once you get the prop on the boat. thanks

OK I put the new 540 Acme on the boat and took her for spin. The holeshot was greatly improved. This boat comes out and up right now. She runs very smooth. I have no vibrations. At wot, 42 mph(gps), 4400 rpms. My tach may be off but its probably close. My 13x13 original prop was nicked and dented a tad and did 44 mph wot same rpms. But the old prop took the boat twice the time and effort to plane out. Now with the 540, the boat will put you back in your seat even at 35mph. So, a little less top speed, but smoother, quicker and snappier. I don't know if I should have gotten the 542 instead, but definately better than the original. I will get that old prop serviced and keep it as a spare. What do you guys think about the difference between the 540 and the 542?

Conan wrote: I don't know if I should have gotten the 542 instead, but definately better than the original. I will get that old prop serviced and keep it as a spare. What do you guys think about the difference between the 540 and the 542?

The 542 has less pitch so your WOT RPM's would be up - probably too much. I feel you made a good choice.

I forgot to mention I use a 13x12 michigan prop.