propeller
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=36551
Printed Date: November-17-2024 at 3:15am
Topic: propeller
Posted By: wesley64
Subject: propeller
Date Posted: June-27-2015 at 5:37pm
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hello all,i have a 1991 sn 351 pcm and 1.23-1 trans.my prop is a 3 blade 14rh16. is this the correct prop?just wondering. thanks brett |
Replies:
Posted By: MrMcD
Date Posted: June-28-2015 at 12:14am
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It may be the correct one but many have found improvement with the 4 blade acme. I run a 224, I think many more prefer the 422. In my case the 4 blade Acme is quieter, smoother, faster and has more torque pulling load. I don't know an objection other than the $450 to buy one. PS: I should note this is with the 310 HP 351 Pro Boss and it will RPM over 5,000 with this combo. |
Posted By: Jonny Quest
Date Posted: June-29-2015 at 3:13am
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OJ 14 X 16 3-blade was the standard prop back in the day. The new CNC props will be a noticeable improvement. I'm at high altitude (4,000+ feet) with the High Output 351W. I run an Acme 654 4-Blade 12.5 x 15 RH 1" Bore .105 Cup. At sea level, I run an Acme 422 4-Blade 12.5 x 15.5 RH 1" Bore .105 Cup Which engine do you have? If it is a "PLD" engine (260 H.P.) then you may want to consider the Acme 654. Do some searches in General Discussion and you will find many threads on props. JQ ------------- Current 2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum |
Posted By: wesley64
Date Posted: June-30-2015 at 2:09am
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thanks,it is the 351 pcm that came with the pcm engine management system. 240hp? brett |
Posted By: wesley64
Date Posted: June-30-2015 at 2:11am
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the max rpm is about 3600 roughly 45mph brett |
Posted By: TRBenj
Date Posted: June-30-2015 at 8:19am
I don't think so... Better check your gauges. |
wesley64 wrote:Posted By: JPASS
Date Posted: June-30-2015 at 8:38am
+1 May RPM on my '92 is roughly 5000 RPM. ------------- '92 Correctcraft Ski Nautique |
Posted By: 8122pbrainard
Date Posted: June-30-2015 at 7:54pm
WOW! Bret, is that what you are getting on the tach? If so, as mentioned, somethings wrong. Get a shop tach hooked up and find out. The only 3600max engines I know of are old flat head 4's, 6's and 8's. ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: Jonny Quest
Date Posted: June-30-2015 at 9:47pm
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Per PCM Owners Manual: 4,400 RPMs as a max intermittent cruise 3,600 RPMs as continuous cruise In a properly set-up boat, you should be able to turn maximum RPMs with your propeller. If not, something is wrong, such as propeller diameter/pitch or engine problems. I'd double check the tachometer first. Take a GPS unit and see what the wide open throttle speed is per the GPS unit. ------------- Current 2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum |
Posted By: wesley64
Date Posted: June-30-2015 at 10:55pm
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i used gps on my phone but maybe the tach is not correct. maybe i will check again tonight. brett |
Posted By: wesley64
Date Posted: July-02-2015 at 2:22pm
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checked it again on phone gps.3800 rpm 41-42mph.wide open i will see if secondaries are opening all the way brett |