Need new Acme prop, recommendation? |
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Netdewt
Senior Member Joined: February-15-2010 Location: Minneapolis Status: Offline Points: 222 |
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Posted: September-06-2020 at 7:39pm |
I have a 1989 Ski Nautique 351W. I currently have (had, we found some rocks) an Acme 2068 that was installed by the previous owner for max speed (I could almost get it to 50mph).
Can you recommend a prop for best performance at 15-25mph? We trick ski and wakeboard, not much slalom speed needed. I’ve seen 422 and 1868 recommended. There are so many variables I don’t know how to choose. My understanding is this boat is the first year with the 1:1.23 trans, and so uses different props than other 2001s. Anyone have a favorite? |
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1989 Ski Nautique 2001, 940 hours
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MrMcD
Grand Poobah Joined: January-28-2014 Location: Folsom, CA Status: Offline Points: 3764 |
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I have the 422, it is a nice prop, tops out around 46 with the 310 HP Pro Boss. Very strong out of the hole and quiet always.
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Jonny Quest
Grand Poobah Joined: August-20-2013 Location: Utah--via Texas Status: Offline Points: 2995 |
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654 is a good choice as it’s a “tweeter” in between the 422 and 1868.
JQ
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Current
2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum |
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Netdewt
Senior Member Joined: February-15-2010 Location: Minneapolis Status: Offline Points: 222 |
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Good call. I think Acme is recommending this also. Is 4 blade going to benefit me? I don’t do ballasts. I’m hoping for better speed control in the 17-22mph range, but maybe that’s always an issue without Perfect Pass. |
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1989 Ski Nautique 2001, 940 hours
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Jonny Quest
Grand Poobah Joined: August-20-2013 Location: Utah--via Texas Status: Offline Points: 2995 |
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4 vs 3 blade is always a fun discussion. That being said...how many LARGE wake boats are sold with a 3-blade prop as stock configuration? Go with the 4-blade. If you really want low-end grunt and slower speed performance, consider the 1868. Just watch the tach as you can over-rev by several hundred RPMs with a good engine and the 1868 (voice of experience). Hole shot will be very strong...
JQ
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Current
2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum |
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Netdewt
Senior Member Joined: February-15-2010 Location: Minneapolis Status: Offline Points: 222 |
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I went for the 654. The 2068 is not repairable (not surprised).
So my spare is an old non-Acme that was lightly repaired by my uncle. It works but it’s rough. Do you all keep nice spares? What is your max RPM for a 351W? I stay under 4500, and that’s just short bursts for fun. Daily usual RPM is under 3000. |
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1989 Ski Nautique 2001, 940 hours
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halfnelly
Senior Member Joined: January-14-2013 Location: Maitland, FL Status: Offline Points: 253 |
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You'll get better performance if you let it spin a little, 5000 is safe. My 1600 hour 351 will turn my Acme 422 to 5400 and my 1868 to almost 5600. The 1868 is a bit too short, I try not to run WOT on the top end. It's a great low speed and holeshot prop, though. You can also see in the photos how off the stock tach is compared to the PerfectPass. 422: 1868:
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SNobsessed
Grand Poobah Joined: October-21-2007 Location: IA Status: Offline Points: 7102 |
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I had ACME 1442 on my 1989 2001 & it was just right for us (wakeboarding with moderate ballast). The 422 was just too much prop.
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“Beer is proof that God loves us and wants us to be happy.”
Ben Franklin |
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desertskier
Platinum Member Joined: December-19-2006 Location: Az Status: Offline Points: 1116 |
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My '89 had the 240hp 351w. I tried the 422 and as mentioned it was too much prop. I went back to the OJ that came with it. Don't remember exactly what it was but it worked better.
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92 SN - Owned since 93
99 Pro Air 89 SN - Went to live on a lake in Texas 75 Donzi 16 - Sold in 93 |
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MrMcD
Grand Poobah Joined: January-28-2014 Location: Folsom, CA Status: Offline Points: 3764 |
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Nelly, what HP engine sins a 422 to 5,600 rpm? In what hull? My 310HP in the 95 196 only turns around 5,000, maybe a touch more on a good day.
I used to spin 5,300 rpm when I ran the acme 224. I liked that prop but had it repaired again and it is not the same.
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TRBenj
Grand Poobah Joined: June-29-2005 Location: NWCT Status: Offline Points: 21192 |
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*not the stock tach
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Faceplant
Senior Member Joined: July-27-2013 Location: Otter Lake , Mi Status: Offline Points: 420 |
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Curious. What do you mean when you say - too much prop ?
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Feels like I am hanging 10 but in reality - probably hanging 6.
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SNobsessed
Grand Poobah Joined: October-21-2007 Location: IA Status: Offline Points: 7102 |
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The engine did not have good throttle response at wakeboard speeds 18-20 mph.
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“Beer is proof that God loves us and wants us to be happy.”
Ben Franklin |
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halfnelly
Senior Member Joined: January-14-2013 Location: Maitland, FL Status: Offline Points: 253 |
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94 Sport, 351 Pro Boss carb. The Sport rides a little less bow heavy than a Ski, probably worth a couple of MPH. My 422 has been repaired a handful of times, I'm sure that's not helping the RPMs stay down, either.
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MrMcD
Grand Poobah Joined: January-28-2014 Location: Folsom, CA Status: Offline Points: 3764 |
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Thanks
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halfnelly
Senior Member Joined: January-14-2013 Location: Maitland, FL Status: Offline Points: 253 |
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Good eye, it was replaced about 6 or 7 years ago. Closest one I could get from NautiqueParts, I think.
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