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Dec 30th, 2023
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 Water Pressure SHO 225
#13294408
09/27/19 01:15 AM
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Joined: Sep 2011
Posts: 5,396
Minner Bucket
OP
TFF Celebrity
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OP
TFF Celebrity
Joined: Sep 2011
Posts: 5,396 |
What’s good pressure at WOT on a SHO 225? I noticed today I was at 13/14 running about 71 mph. It seemed low to me but I don’t usually pay attention to water pressure. Just had annual service done by dealer and water temp was 97, air was about the same. Anything to be concerned about?
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Re: Water Pressure SHO 225
[Re: Minner Bucket]
#13294441
09/27/19 01:44 AM
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Joined: Feb 2002
Posts: 2,960
Txduckhunter
Extreme Angler
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Extreme Angler
Joined: Feb 2002
Posts: 2,960 |
Pretty close to where my 250 is.
At idle, it's terrible but my mechanic says that it's pretty normal. I watch the temp and it never has run hot in the years I've owned it. I'm over 550 hrs and it's never missed a beat.
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Re: Water Pressure SHO 225
[Re: Minner Bucket]
#13294506
09/27/19 02:44 AM
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Joined: Oct 2003
Posts: 962
Jobie99
Pro Angler
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Pro Angler
Joined: Oct 2003
Posts: 962 |
Sounds about right. Another thing to pay attention to is when you start your boat it won’t squirt water right away. My mechanic says you should be patient and wait until water comes out before blasting off. He thinks it’s important because of the size of the engine block.
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Re: Water Pressure SHO 225
[Re: Minner Bucket]
#13294692
09/27/19 12:45 PM
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Joined: Sep 2008
Posts: 1,801
Tx Tree Grower
Extreme Angler
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Extreme Angler
Joined: Sep 2008
Posts: 1,801 |
That is about where my 250 runs. Even in the heat of the summer I almost never get it to temperature where the thermostat actually opens. It takes a long hard run to get it there. In the winter I don't think I have ever opened the thermostat. When I first bought mine I had the same concerns listed above. I actually took it back to the dealer and said "psi is way low and it takes forever to start pissing water". Mechanic told me the same. That's normal. I'm at about 285 hours now and no issues, at least not related to the water pump or temp.
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Re: Water Pressure SHO 225
[Re: Minner Bucket]
#13294764
09/27/19 01:46 PM
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Joined: May 2002
Posts: 5,025
leethefishking
TFF Celebrity
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TFF Celebrity
Joined: May 2002
Posts: 5,025 |
Your fine. Low pressure, high volume pump.
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Re: Water Pressure SHO 225
[Re: leethefishking]
#13295260
09/27/19 09:40 PM
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Joined: Jul 2011
Posts: 9,198
the skipper
TFF Celebrity
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TFF Celebrity
Joined: Jul 2011
Posts: 9,198 |
Your fine. Low pressure, high volume pump. Yep. I'm pretty sure it's only required 11 psi at wot. Some of them dont even register on a gauge at idle.
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Re: Water Pressure SHO 225
[Re: the skipper]
#13295378
09/27/19 11:44 PM
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Joined: Nov 2014
Posts: 23,362
SteezMacQueen
TFF Guru
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TFF Guru
Joined: Nov 2014
Posts: 23,362 |
Your fine. Low pressure, high volume pump. Yep. I'm pretty sure it's only required 11 psi at wot. Some of them dont even register on a gauge at idle. This is what I was told as well. But, mine gets around 10-13psi at idle and around 25-30psi at WOT.
Eat. Sleep. Fish.
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Re: Water Pressure SHO 225
[Re: SteezMacQueen]
#13295432
09/28/19 12:54 AM
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Joined: May 2002
Posts: 5,025
leethefishking
TFF Celebrity
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TFF Celebrity
Joined: May 2002
Posts: 5,025 |
Your fine. Low pressure, high volume pump. Yep. I'm pretty sure it's only required 11 psi at wot. Some of them dont even register on a gauge at idle. This is what I was told as well. But, mine gets around 10-13psi at idle and around 25-30psi at WOT. There is a good chance you gauge is off. Are you sure it’s a zero when off?
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Re: Water Pressure SHO 225
[Re: Minner Bucket]
#13295550
09/28/19 03:18 AM
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Joined: Nov 2014
Posts: 23,362
SteezMacQueen
TFF Guru
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TFF Guru
Joined: Nov 2014
Posts: 23,362 |
Yes. The gauge is zero psi when off. If I over trim the motor, it will dip severely. When I raised the motor to 2-1/2” below pad, it dipped down to 10-15 psi on plane. I dropped the motor back down a half inch to restore the water pressure to it’s previous reading. I haven’t changed my impeller in two years, but I use the boat 3-4 times a week, year round and flush the motor monthly.
Eat. Sleep. Fish.
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Re: Water Pressure SHO 225
[Re: leethefishking]
#13295595
09/28/19 06:31 AM
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Joined: Apr 2009
Posts: 4,346
elkhartdom
TFF Team Angler
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TFF Team Angler
Joined: Apr 2009
Posts: 4,346 |
Your fine. Low pressure, high volume pump. +1
at the sound of my name, fish tremble HI HO SILVER AWAY!!!ranger Z521,250 sho,black and silver TD: BMET 6263 http://theboatcentertx.combmoet@facebook "I humble myself before God, there the list ends" Sam Houston
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Re: Water Pressure SHO 225
[Re: Jobie99]
#13296371
09/29/19 01:32 PM
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Joined: Jan 2018
Posts: 2,561
Jeff From Iowa
Extreme Angler
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Extreme Angler
Joined: Jan 2018
Posts: 2,561 |
Sounds about right. Another thing to pay attention to is when you start your boat it won’t squirt water right away. My mechanic says you should be patient and wait until water comes out before blasting off. He thinks it’s important because of the size of the engine block. Actually you shouldnt be BLASTING off EVER before your engine is up to operating temperature. Absolute minimum would be 100 if you wanted a number. A cold piston will stick to the cold cylinder wall and scuff it or tear the top of the piston off destroying your engine entirely.
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Re: Water Pressure SHO 225
[Re: Jeff From Iowa]
#13296421
09/29/19 02:46 PM
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Joined: Jun 2012
Posts: 20,698
Douglas J
TFF Guru
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TFF Guru
Joined: Jun 2012
Posts: 20,698 |
Sounds about right. Another thing to pay attention to is when you start your boat it won’t squirt water right away. My mechanic says you should be patient and wait until water comes out before blasting off. He thinks it’s important because of the size of the engine block. Actually you shouldnt be BLASTING off EVER before your engine is up to operating temperature. Absolute minimum would be 100 if you wanted a number. A cold piston will stick to the cold cylinder wall and scuff it or tear the top of the piston off destroying your engine entirely. 120 degree min operating temp with the SHO is what I was told by the Yamaha factory
#MFGA
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Re: Water Pressure SHO 225
[Re: Tx Tree Grower]
#13296604
09/29/19 08:05 PM
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Joined: May 2008
Posts: 10,253
Rayzor
TFF Guru
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TFF Guru
Joined: May 2008
Posts: 10,253 |
That is about where my 250 runs. Even in the heat of the summer I almost never get it to temperature where the thermostat actually opens. It takes a long hard run to get it there. In the winter I don't think I have ever opened the thermostat. When I first bought mine I had the same concerns listed above. I actually took it back to the dealer and said "psi is way low and it takes forever to start pissing water". Mechanic told me the same. That's normal. I'm at about 285 hours now and no issues, at least not related to the water pump or temp. Not doubting your word; just want to know. How do you know whether or not your thermostat is coming open or not? Do you have temperature gauges for each bank?
Be safe, Rayzor ![[Linked Image]](http://i418.photobucket.com/albums/pp267/JLedbetter/th_Boatpics036.jpg) 2001 Triton Tx-21/225 Mercury EFI
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Re: Water Pressure SHO 225
[Re: Rayzor]
#13296759
09/29/19 11:28 PM
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Joined: Jan 2018
Posts: 2,561
Jeff From Iowa
Extreme Angler
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Extreme Angler
Joined: Jan 2018
Posts: 2,561 |
That is about where my 250 runs. Even in the heat of the summer I almost never get it to temperature where the thermostat actually opens. It takes a long hard run to get it there. In the winter I don't think I have ever opened the thermostat. When I first bought mine I had the same concerns listed above. I actually took it back to the dealer and said "psi is way low and it takes forever to start pissing water". Mechanic told me the same. That's normal. I'm at about 285 hours now and no issues, at least not related to the water pump or temp. Not doubting your word; just want to know. How do you know whether or not your thermostat is coming open or not? Do you have temperature gauges for each bank? I can tell you from experience if one is stuck open say w debris that side of the engine will stay cold and it wont last long a blast off or two cold and youll hear some clanking.. Happened to me 17 hours from home...
Last edited by Jeff From Iowa; 09/29/19 11:29 PM.
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