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View Full Version : Prop upgrade for 1979 S&S


eschind
07-18-2005, 01:43 PM
I am looking for an upgrade from the stock prop. I've read some threads that recommend 4-blade, others that recommend 3-blade. Does anyone have some suggestions / experience on performance props for a 1979 S&S? Thanks, Erik

BrianM
07-18-2005, 03:43 PM
I would highly reccomend a 3 blade CNC finished prop. Either the ACME or OJ XMP. Will make a night and day difference in performance and smoothness. Type Prop into the search function on this board and you will find lots of discussion and reviews.

eschind
07-18-2005, 10:10 PM
Thanks for the information. Is there a size you would recommend for my boat? I am unfamiliar with inboard props.

Leroy
07-18-2005, 10:25 PM
Also, you should call ACME props and OJ props and ask them. Both are very good with answers like this.

6ballsisall
07-18-2005, 10:39 PM
Eschind. I am selling my boat now and the Acme CNC 541 doesn't go with it. If the boat I replace it with doesnt take the 541 I will sell it if you are interested.

eschind
07-19-2005, 09:45 AM
Hi jrandol,
I am interested in the prop. Do you know the specifics of the prop and if it will work on a '79 S & S? Thanks for the response.

6ballsisall
07-19-2005, 09:50 AM
e,

if you have a 1:1 transmission it will work just fine. The Acme 541 is the 13" x 12.5" CNC prop that we had a (gulp) "group buy" on several months ago. The run very tight tolerances and are extremely queit props. It's night and day nicer than the stock prop or even my OJ legend 4 blade.

ssippiriverrat
07-19-2005, 10:01 AM
If you are into wakeboarding and usually drive around 20-24 I would go with a 4 fin--I recently changed over and it make a huge difference keeping the speed consistant. I think I runs smoother and easier at the slower speed--I am not really sure what it does to your top end speed but definately great for boarding.

eschind
07-19-2005, 12:41 PM
The transmission is the Velvet Drive, which I believe is 1:1. The boat is used primarily for slalom skiing - around 35 mph. Is there a way I can verify the dimensions of the prop for my boat? Also, how much would you sell it for? Thanks again, Erik

6ballsisall
07-19-2005, 12:45 PM
E, if you have the velvet drive we have the same setup. Its the size you want. Send me a PM and we can talk price. Again sale all depends on my new boat not taking this size prop, I really like this prop!!

Footin
07-19-2005, 12:45 PM
e,

if you have a 1:1 transmission it will work just fine. The Acme 541 is the 13" x 12.5" CNC prop that we had a (gulp) "group buy" on several months ago. The run very tight tolerances and are extremely queit props. It's night and day nicer than the stock prop or even my OJ legend 4 blade.

Isn't the 541 13X12? If so, I would be interested.

BrianM
07-19-2005, 12:46 PM
e,

if you have a 1:1 transmission it will work just fine. The Acme 541 is the 13" x 12.5" CNC prop

Actually the #541 is a 13 x 12. I am running the same thing on my boat and absolutely love the performance. I use my boat for skiing 34-36 mph 95% of the time and the prop is perfect for that.

If your boat is a 1:1 the stock prop was a 13x13. Going to a 13 x12 CNCd prop will get you a much better hole shot, better holding power at ski speeds, vibration free performance and no loss in top end.

Footin
07-19-2005, 01:00 PM
Overall, do you guys that changed to Acme, do you see more or less turbulance in the table of the wake?

6ballsisall
07-19-2005, 01:03 PM
Overall, do you guys that changed to Acme, do you see more or less turbulance in the table of the wake?


HUMONGOUS difference in turbelence. For footin it took my boat to a whole new level. Gotta love the white frothy water the old 86' leaves ya! :headbang:

BrianM
07-19-2005, 01:10 PM
Overall, do you guys that changed to Acme, do you see more or less turbulance in the table of the wake?

I foot behind mine with a 100' line. The wake has more froth but it is soft. It looks like there might be a bit more white water betwen the wake but it is softer and overall easier on the feet for wake crossings.

87MC Dave
07-19-2005, 02:40 PM
Where is the best place to order a new prop from. I think I want the #541 13x12, but where is the best place to order it from?

BrianM
07-19-2005, 03:16 PM
www.wakeside.com (http://www.wakeside.com) has the best price on the net for Acme

Cloaked
07-19-2005, 04:04 PM
Where is the best place to order a new prop from. I think I want the #541 13x12, but where is the best place to order it from?All of these guys are telling you good info. I too run the Acme 541 (from the stock 13x13 and it's worth the difference that is gained in performance). Nothing more to say from what everyone else has spoken, just confirming and throwing in another two pennies. I am pleased with the upgrade on the '85 model that I am using.

87MC Dave
07-19-2005, 04:28 PM
Thanks for the info