Best choice for repowering 20' MA

[gofastsandman]

Originally Posted by Snookerd

Have the Jedi’s and David Copperfield been notified about the magical 12 mph planing ability?? Congrats Sandy. The CSC Bible is never wrong.....

In all fairness, I think my gps is set to kts.

I kinda fell into this Danny.

I changed my prop to on ole SST 1 15 x 16p.

I remembered the discussion w 76Redseacraft years ago.

The exhaust gate you speak of is called the rave on Ski Doos.

Remember, pipes and chambers on the old RD 350s and 400`s would wake
up but you could only tune for high or low end HP. The rave gate closes at low rpm
and opens on the high rpm step.

The SST1 has an exhaust diffuser ring design that I`ve not seen on other designs.
I feel this is the magic bullet. The HP bell curve in my factory manual
shows max at 5k. Above that you are just over spinning the engine.

I had the prop collecting dust and just changed it out for the west coast bent prop
award. I brought the trophy, but nobody grounded out, so no award was presented.

The prop just feels so good and linear. I`ve tried a bunch of props over the years.
It is also light and shifting was much improved as far as my clutch dogs sounded.

No heavy clunk like the 10+ lb props.

[Snookerd]

Nice Sandy. Knots not mph...12 is magic. Sounds like a winner with that prop.

[Bigshrimpin]

Originally Posted by Snookerd

Nice Sandy. Knots not mph...12 is magic. Sounds like a winner with that prop.

My 23 will slow down and hold 12 - 13 mph in any sea. This particular day was calm. Torque curve of the Merc 150 peaks at 3000rpm.
https://www.youtube.com/watch?v=g00ui60dc60

[Snookerd]

Originally Posted by Bigshrimpin

My 23 will slow down and hold 12 - 13 mph in any sea. This particular day was calm. Torque curve of the Merc 150 peaks at 3000rpm.
https://www.youtube.com/watch?v=g00ui60dc60

Tim-Nice!! That’s what I’m talking about! Sandy was just saying his setting were on knots....My Zuke DF 300 transom mounted planes at 12 knots. I was referencing a post where Kmoose did not think that we could plane at that speed in a 23. See below....

Originally Posted by kmoose

I don’t think it’s a stretch for a twenty but for a 23 with the added dead rise... 10-12 would be some David Copperfield shit.

[Bigshrimpin]

That's some classic Moose!!

[gofastsandman]

Originally Posted by Bigshrimpin

That's some classic Moose!!

Moose on pics of the ole 21 next to his 23.

I call this pic 21 My Ass!

[Topflitegraphics]

Back at it again - had to take time off from the boat to take care of other things. The 130 Etec ended up being a total turd. Needed WAY too much work.

Considering the following:

2003 Yamaha 150 HPDi with 461 hours - asking $3650

or
1998 Yamaha 175 SWSii OX66 Unknown hours asking $2500

or

1996 Yamaha 130SWS owner asking $2500

also

2004 Suzuki 140 4S w about 350 hrs - asking $3500

Thoughts?

[bgreene]

For etec, try ARG Marine, FLA, top notch - no junk, will warranty and ship in crate.
I bought from them. On web site - ask for Victor, they sell a lot of motors.

The OX66......really old tech, lots of fuel and oil burn.

Better if you can get a newer used technology.

[Topflitegraphics]

Originally Posted by bgreene

For etec, try ARG Marine, FLA, top notch - no junk, will warranty and ship in crate.
I bought from them. On web site - ask for Victor, they sell a lot of motors.

The OX66......really old tech, lots of fuel and oil burn.

Better if you can get a newer used technology.

Old tech does not really bother me. I figure this is just going to be a 1 or 2 season thing for me while I squirrel away some cash for a new 140 4-Stroke... I did not boat at all last summer with the old motor crapping out, transom needing to be redone, buying a house and then having a heart attack. Given all of that, I REALLY want to get out on the water this summer!

[erebus]

Originally Posted by Topflitegraphics

Thoughts?

Stay away from the HPDI.
I'd go for the OX66 way before the HPDI.
Although, a 175 OX66 seems like a bit too much motor for a 20.