Need new Acme prop, recommendation?
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Boat Maintenance
Forum Discription: Discuss maintenance of your Correct Craft
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=49195
Printed Date: January-16-2025 at 8:44am
Topic: Need new Acme prop, recommendation?
Posted By: Netdewt
Subject: Need new Acme prop, recommendation?
Date Posted: September-06-2020 at 7:39pm
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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? ------------- 1989 Ski Nautique 2001, 940 hours |
Replies:
Posted By: MrMcD
Date Posted: September-06-2020 at 8:29pm
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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. ------------- |
Posted By: Jonny Quest
Date Posted: September-07-2020 at 12:36am
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654 is a good choice as it’s a “tweeter” in between the 422 and 1868. JQ ------------- Current 2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum |
Posted By: Netdewt
Date Posted: September-08-2020 at 12:29pm
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. ------------- 1989 Ski Nautique 2001, 940 hours |
Jonny Quest wrote:Posted By: Jonny Quest
Date Posted: September-08-2020 at 4:41pm
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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 ------------- Current 2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum |
Posted By: Netdewt
Date Posted: September-10-2020 at 1:17pm
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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. ------------- 1989 Ski Nautique 2001, 940 hours |
Posted By: halfnelly
Date Posted: September-10-2020 at 2:12pm
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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Posted By: SNobsessed
Date Posted: September-10-2020 at 4:18pm
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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. ------------- “Beer is proof that God loves us and wants us to be happy.” Ben Franklin |
Posted By: desertskier
Date Posted: September-10-2020 at 5:09pm
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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. ------------- 92 SN - Owned since 93 99 Pro Air 89 SN - Went to live on a lake in Texas 75 Donzi 16 - Sold in 93 |
Posted By: MrMcD
Date Posted: September-10-2020 at 7:01pm
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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. ------------- |
Posted By: TRBenj
Date Posted: September-10-2020 at 7:35pm
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*not the stock tach |
Posted By: Faceplant
Date Posted: September-10-2020 at 7:56pm
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Curious. What do you mean when you say - too much prop ? ------------- Feels like I am hanging 10 but in reality - probably hanging 6. |
Posted By: SNobsessed
Date Posted: September-10-2020 at 9:17pm
The engine did not have good throttle response at wakeboard speeds 18-20 mph. ------------- “Beer is proof that God loves us and wants us to be happy.” Ben Franklin |
Posted By: halfnelly
Date Posted: September-10-2020 at 10:55pm
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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Posted By: MrMcD
Date Posted: September-10-2020 at 10:57pm
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Thanks ------------- |
Posted By: halfnelly
Date Posted: September-10-2020 at 10:57pm
Good eye, it was replaced about 6 or 7 years ago. Closest one I could get from NautiqueParts, I think.
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