Need guidance on 1996 super sport trans issue
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=50203
Printed Date: January-15-2025 at 10:04pm
Topic: Need guidance on 1996 super sport trans issue
Posted By: 81Sid
Subject: Need guidance on 1996 super sport trans issue
Date Posted: September-07-2021 at 10:42am
|
Good morning. I am having an issue with my NEW to me 96 super sport. When I throttle up, the boat goes fine until I get to about 3k rpm. Then the rpm's keep climbing but the boat isn't keeping it momentum. I pull off the throttle and the boat slows. I throttle up again and it fine until again around 3 k rpm. If I go slowly with the throttle i can get the bot up to around 25mph, but no more. Things i have tried: Filled the trans oil and checked it every use. Trans oil is not burned or smells bad, still red when I check. I needed to add a touch the last time i took the boat out. Switched the prop back to the original 3 blade prop and problem persisted. Not sure which direction to move to next. The prop I removed (acme 1578 heavy load prop) had a very small ding but there is no vibration at all when we are under way, so I dont believe the drive shaft is out of alignment, but will have it professionally checked. Does this sound like it is more transmission or v drive? Any guidance form you guys is invaluable! Your advise has always been very helpful. Thank you in advance! ------------- '81 CC 20th Anniversary hull Making it my own... '96 Super Sport |
Replies:
Posted By: 8122pbrainard
Date Posted: September-07-2021 at 5:03pm
|
Sounds like the trans (not the V drive) is slipping. ------------- /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: MrMcD
Date Posted: September-07-2021 at 7:07pm
|
Did the prop have a key in it? If the keyway is missing and the prop is not lapped to the prop shaft it will slip on the shaft. Properly installed a prop is hard to remove from the shaft, you need a puller. How did yours come off? ------------- |
Posted By: KENO
Date Posted: September-08-2021 at 6:10am
|
You have a Walter v drive in that boat. The only way it can slip is if the teeth are being ground off the gears, it has no clutches or clutch plates of any kind. The transmission has clutch plates that can slip. The slippage is most likely to occur when load is the heaviest and that's when taking off from a dead stop with a lot of throttle. So......what happens if you do a full throttle takeoff? Has it been this way since you bought the boat? |
Posted By: 81Sid
Date Posted: September-09-2021 at 12:19pm
|
Morning. Thanks for the replies! 1. Yes the prop had/has a key in it and i use a puller to get it off. It was difficult to get off as well. 2. At full throttle it hesitates and the rpm's shoot up, so I am feeling the same thing then. I first day I got the boat it did not do anything and I went full throttle a couple times. The 2nd day is when I stated experiencing this. I think i got dupped a litte with this purchase. The rest of the boat is in good shape, and I expected to have to fix some things on a 25 year old boat. Live and learn. I am still excited to have a super sport! Just got to get it up up to speed!!! Thanks again for your all of your insights! I have decided to send the trans off to Joe at FFI for a rebuild! I found his info on the site in other posts! Sid ------------- '81 CC 20th Anniversary hull Making it my own... '96 Super Sport |
Posted By: KENO
Date Posted: September-09-2021 at 12:39pm
| So when you give it full throttle from a stop, you must get some pretty much gawdawful extra slipping noises? |
Posted By: 81Sid
Date Posted: September-09-2021 at 1:21pm
|
Not so much noises, just one and the extra rpm's that are alarming at first. ------------- '81 CC 20th Anniversary hull Making it my own... '96 Super Sport |
Posted By: MrMcD
Date Posted: September-09-2021 at 2:06pm
|
Fix it and it will be your boat, I bought mine with no water test since it was December at the time, it only had 100 hours on it. First water test found vibration, needed new Prop, Prop Shaft and strut alignment. Boat was in great shape once fixed but buy a used item and it is always a crap shoot. I think getting the tranny out of a V drive is quite the task but there is help on here to walk you through should you decide to fix it yourself. ------------- |
Posted By: 81Sid
Date Posted: September-09-2021 at 2:33pm
|
Thanks for the positivity! Definitely a crap shoot. I'm a couple fixes away from it being mine to enjoy for a long time! Love the hull of this boat. Have a great weekend! ------------- '81 CC 20th Anniversary hull Making it my own... '96 Super Sport |
Posted By: KENO
Date Posted: September-09-2021 at 3:28pm
That's the sound of the forward clutches slipping Here's a link to a recent thread that might help you some with removal and reinstallation of the v drive and transmission http://www.correctcraftfan.com/forum/forum_posts.asp?TID=50048&title=oily-mess" rel="nofollow - link
|
81Sid wrote:Posted By: Gary S
Date Posted: September-09-2021 at 5:27pm
|
Dont know if your pulling it yourself but after you pull the upholstery out I laid HF moving blankets on the floor to keep oil off carpet and had several 2x6's across the opening so that i would keep off the fuel tank. Also gave me a place to set the vdrive on since there was no reason to remove it from the boat. Prop up the input side of the drive so that the oil doesnt leak out. Think about changing the dampner while all that is out too if you can get one.
------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1711&sort=&pagenum=1&yrstart=1966&yrend=1970" rel="nofollow - 69 Mustang HM SS 95 Nautique Super Sport |