1990 Ski Nautique Overheating |
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11045 |
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Posted: May-29-2017 at 3:00am |
Being a 1990 you probably have a LH rotation engine and a RH prop due to your transmission being a PCM 1:23 to 1
Looking at your transmission fluid thread, it doesn't say for sure what you have but the 1.23 to 1 is pretty likely. If that's the case then you look at the picture at the LH drawing and the screw head will be facing in. Keep in mind, If you have it installed backwards, it won't move any water To verify your ENGINE rotation you could look and see which way the pulleys are turning. Looking at the pulleys from the front of the engine they will turn CLOCKWISE for NORMAL rotation If it's reverse rotation they'll turn COUNTERCLOCKWISE. There are other ways too, but this works and is easy to look at with the engine running. Based on what you've posted earlier in this thread, it sounds like you have it installed correctly. |
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Greektique
Newbie Joined: May-15-2017 Location: Charlotte, NC Status: Offline Points: 29 |
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It is a 1990 Ski Nautique I am not certain how to state the rotation
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Greektique
Newbie Joined: May-15-2017 Location: Charlotte, NC Status: Offline Points: 29 |
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I have a PCM 351. I have a sherwood raw water pump. I looked at a previous post it said the cam screw on the side of the pump should face the engine. Then today I found a post the had a sketch that showed the cam screw on the outside for a RR351, and The screw on the inside for a LH(GT-40) How should I have the pump installed?
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Thrace,
The hose route doesn't matter. |
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Greektique
Newbie Joined: May-15-2017 Location: Charlotte, NC Status: Offline Points: 29 |
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does the intake hose have to go under the tranny on its way to the strainer or can i take it over the tranny to the strainer and then to the transmission oil cooler.
' |
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Greektique
Newbie Joined: May-15-2017 Location: Charlotte, NC Status: Offline Points: 29 |
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Does the hose from the intake have to go under the tranny to the strainer or can it go over the tranny to the strainer. It seems to be a mute point because the pressure wold not change, but i want to make sure
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Gary S
Grand Poobah Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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No back pressure since all extra water goes out thru the exhausts,thermostat only lets water out of the block.. What I'd try before I'd take anything else apart would be to remove the hose that the red arrow points to, put it in another bucket . Connect and fill your bucket connected to your intake hose,start the engine and see if the raw water pump is pumping. Don't run it long, just enough to see if its pumping and report back.
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Greektique
Newbie Joined: May-15-2017 Location: Charlotte, NC Status: Offline Points: 29 |
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New oil cooler on. New RWP impeller installed All hose clamps tightened and Strainer seal done. It still does not suck water up from the bucket. Any ideas? on what I can Check Can back pressure come from thermostat not opening. I have not replaced thermostat, but plan to tomorrow. Intake is open and clear. All hoses are open and clear. .
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Greektique
Newbie Joined: May-15-2017 Location: Charlotte, NC Status: Offline Points: 29 |
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Great point about pressure test
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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I suggest pressure testing before you install it on the engine. The typical failure is from freeze damage from improper winterizing. Even though it's the outer shell that seems to split first, you what to make sure the inner tubes that circulate the ATF are good. so you don't end up with water in the trans. |
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Greektique
Newbie Joined: May-15-2017 Location: Charlotte, NC Status: Offline Points: 29 |
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I also had a friend that gave me an oil cooler from his mastercraft PCM with a powerslot transmission. Its longer, and thinner than mine but it has the same fittings. Can I use it so I can take the boat out sooner. not tags on either tootle me about pressure or cooling capacity.
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Greektique
Newbie Joined: May-15-2017 Location: Charlotte, NC Status: Offline Points: 29 |
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I had a friend braze the seal. He is bringing it by so I can have as a spare if it holds. If i change my mind you can have it.
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Greektique
Newbie Joined: May-15-2017 Location: Charlotte, NC Status: Offline Points: 29 |
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Sorry, the garden hose was what was collapsing. The intake hose was fine.
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Duane in Indy
Platinum Member Joined: October-26-2015 Location: Indiana Status: Offline Points: 1578 |
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If you decide to pitch it, then pitch it my way. I will pay shipping charges. Duane |
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Keep it as original as YOU want it
1978 Mustang (modified) |
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Hollywood
Moderator Group Joined: February-04-2004 Location: Twin Lakes, WI Status: Offline Points: 13513 |
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water hose = garden hose?
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Jonny Quest
Grand Poobah Joined: August-20-2013 Location: Utah--via Texas Status: Offline Points: 2955 |
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Your raw water hose is starting to collapse? The hose from the water intake should be a wire reinforced water hose. The purpose of the wire reinforcement is to prevent hose collapse. Hose collapse and air leaks are a good recipe for over-heating. 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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bb12
Senior Member Joined: March-24-2009 Location: Kansas, USA Status: Offline Points: 355 |
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I believe you need PCM # R147003, the 5" one, but someone else will confirm... or call Vince or Richard at SkiDim in the morning.
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1989 Ski Nautique 2001
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Greektique
Newbie Joined: May-15-2017 Location: Charlotte, NC Status: Offline Points: 29 |
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I will install new tranny cooler and get back to this thread with results.
Can anyone verify which tranny cooler I need for a 1990 Ski Nautique. |
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Gary S
Grand Poobah Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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Check here about 5 posts down---
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bb12
Senior Member Joined: March-24-2009 Location: Kansas, USA Status: Offline Points: 355 |
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Go to google and type in "Timmy T correctcraftfan"
It's basically a homemade hose adapter you can plumb into your cooling system to easily run your boat out of water. Pretty handy and costs about $12 to make. |
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1989 Ski Nautique 2001
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Greektique
Newbie Joined: May-15-2017 Location: Charlotte, NC Status: Offline Points: 29 |
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Thanks, Just ordered from SkiDim. What is a Timmy T?
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Gary S
Grand Poobah Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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Yes much like trying to drink thru a straw with a hole in the side of it. Impellers can go in any way,if the vanes are backward to the rotation they will quickly flip over with no harm done. |
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bb12
Senior Member Joined: March-24-2009 Location: Kansas, USA Status: Offline Points: 355 |
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If it were me I would just get a new cooler. They are a fairly inexpensive part...Nautiqueparts.com or SkiDim has them.
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1989 Ski Nautique 2001
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Greektique
Newbie Joined: May-15-2017 Location: Charlotte, NC Status: Offline Points: 29 |
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The cooler itself the hose connect to the cylindrical end, and then the cylindrical end forms a cone the attaches to the body of the cooler. There is a seam there and a similar seam at the top The bottom seam is leaking, I checked transmission, no water in tranny. No Tranny oil in water either. so it looks like I need a new tranny oil cooler or can I braze that seam and seal it?
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bb12
Senior Member Joined: March-24-2009 Location: Kansas, USA Status: Offline Points: 355 |
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The cooler itself is leaking or the hose connection?
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1989 Ski Nautique 2001
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Greektique
Newbie Joined: May-15-2017 Location: Charlotte, NC Status: Offline Points: 29 |
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Ok thanks everyone. I just started following the hoses and found that the transmission cooler has a small leak on the bottom side of the cooler near the hose connection. Water is spraying out a fine mist. I had my girlfriend rev the engine and the leak stopped I think I found the problem Correct me if Im wrong but a leak that disappears when I rev engine means that the raw water pump is pulling more water and thus reduces the water available to leak pout and would allow for air leak into the system at the lake thus breaking the suction. Does that sound right?
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bb12
Senior Member Joined: March-24-2009 Location: Kansas, USA Status: Offline Points: 355 |
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Yes you can eliminate the strainer and test in the driveway to see if that's your culprit. I wouldn't put it in the lake without it though.
Run the boat in the driveway by filling a 5 gallon bucket full of water and stick the intake hose in it. You'll have to keep the garden hose running in it to keep it full. Once you get your overheating issue resolved you can install a Timmy T. |
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1989 Ski Nautique 2001
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Greektique
Newbie Joined: May-15-2017 Location: Charlotte, NC Status: Offline Points: 29 |
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Just hooked hose up to intake.
Started engine and then turned on hose The water is flowing through the engine and it is heating up. It is controlling at about 155 degrees. The risers and manifold outlets are cool and water is coming out of the exhaust I rev the engine and I can see the water hose start to collapse and I return to idle so as not to starve the pump of water is there anything I should look for while doing this that will tell me what the problem is when in the lake |
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Greektique
Newbie Joined: May-15-2017 Location: Charlotte, NC Status: Offline Points: 29 |
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Are there any pics of impeller installed correctly I have a pic of how I installed that I can compare to.
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velde99
Platinum Member Joined: November-04-2012 Location: Tampa Florida Status: Offline Points: 1108 |
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Check impeller is installed properly. Check for any clogged hoses, and then I'd check the thermostat. If Iran not opening all the way- engine may over heat?
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