Engine Temp

[Jasper]

Hi All,
My 53 Convertible has arrived home after a long journey etc.
I have the following question:
Engines are:12V71N 525 HP
After repairing the lift rails, new anti-foul and prop speed, I got a good 17.5 knots out of her against the tide.
But the starboard engine temp rose to about 225. What should the ideal temp be be at it’s top?

 

[rsmith]

Hi All,
My 53 Convertible has arrived home after a long journey etc.
I have the following question:
Engines are:12V71N 525 HP
After repairing the lift rails, new anti-foul and prop speed, I got a good 17.5 knots out of her against the tide.
But the starboard engine temp rose to about 225. What should the ideal temp be be at it’s top?

Mine run in the 180 range 225 is too high. check your water flow first then the coolant concentration raw water pump inpeller then pull the heat exchanger and clean it out. Mine will push 190 in 90*+ water. We do get that here in Fla in the summer.

 

[Jasper]

Thanks RS

 

[yachtsmanbill]

Dont trust the gage on the Dash!! ws

 

[Glory]

Mine run in the 180 range 225 is too high. check your water flow first then the coolant concentration raw water pump inpeller then pull the heat exchanger and clean it out. Mine will push 190 in 90*+ water. We do get that here in Fla in the summer.

90 degree water, this tIme of year that make me sick. Just two weeks the harbor here in Northport, NY wasn't even wet, It was frozen.

But I'm counting the days.

As far as 225 degrees goes, that is bad. I hope the engines have alarms that went off before the 225 temp.

JM

 

[REBrueckner]

rsmith:

Isn't this speed about in line with the one I posted for a new prospective buyer looking at a 50C when you told me "not to post about sometjing I know nothing about "???

I think in that post I suggested a cruise speed of about 15/16 knots....ok so maybe I was a knot or two high....

Or is Jasper wrong too??

 

[MikeP]

If the gauge showed 225 but the alarm didn't go off and the engine didn't "complain", I'd say the gauge was wrong! Shoot the thermostat housings from a couple of inches away with an IR temp gun and see what sort of reading you get.

 

[rsmith]

rsmith:

Isn't this speed about in line with the one I posted for a new prospective buyer looking at a 50C when you told me "not to post about sometjing I know nothing about "???

I think in that post I suggested a cruise speed of about 15/16 knots....ok so maybe I was a knot or two high....

Or is Jasper wrong too??

Rob your comments based on reading magazines and taken from what you've read on websites and Pascoe without any actual experience many times are just wrong.Just because you pump yourself up using others experiences impresses no one.Maybe you can explain how a boxy 48yf only 2 ft shorter with way more interior wood cabintry staterooms and other bs and 180less HP can be 7kts faster than a Conv.
BTW jasper was quoting cruise speed.

 

[REBrueckner]

"Rob your comments based on reading magazines and taken from what you've read on websites and Pascoe without any actual experience many times are just wrong. Just because you pump yourself up using others experiences impresses no one."

And yet you have never given an example...If I take something from a magazine, I post the article reference...and the same for Pascoe.... The vast majority of my posts are personal experience I try to share....

ok so maybe I was a knot or two low instead of high ....No one else posted ANYTHING about speed for that inquiry so I did the best I could....You never posted anything specific for that prospective buyer to help him/her either.... just criticisms of what I said. If this 53C cruises at say 17 knots at 2,000 RPM that's faster than a 50C I was aboard in the early 1980's....

"Maybe you can explain how a boxy 48yf only 2 ft shorter with way more interior wood cabintry staterooms and other bs and 180less HP can be 7kts faster than a Conv."

Not completely ..but you have the weight comparison backwards: The brochure weight of a 53C is 11,000 lbs heavier than the 48 YF and the 53C another almost foot and a half of additional beam .....(I don't have any 50C data.) If I did not have some experience/data to the contrary, I'd also likely think they are within a few knots of each other and maybe the 50/53 would be faster....

 

[rsmith]

"Rob your comments based on reading magazines and taken from what you've read on websites and Pascoe without any actual experience many times are just wrong. Just because you pump yourself up using others experiences impresses no one."

And yet you have never given an example...If I take something from a magazine, I post the article reference...and the same for Pascoe.... The vast majority of my posts are personal experience I try to share....

ok so maybe I was a knot or two low instead of high ....No one else posted ANYTHING about speed for that inquiry so I did the best I could....You never posted anything specific for that prospective buyer to help him/her either.... just criticisms of what I said. If this 53C cruises at say 17 knots at 2,000 RPM that's faster than a 50C I was aboard in the early 1980's....

"Maybe you can explain how a boxy 48yf only 2 ft shorter with way more interior wood cabintry staterooms and other bs and 180less HP can be 7kts faster than a Conv."

Not completely ..but you have the weight comparison backwards: The brochure weight of a 53C is 11,000 lbs heavier than the 48 YF and the 53C another almost foot and a half of additional beam .....(I don't have any 50C data.) If I did not have some experience/data to the contrary, I'd also likely think they are within a few knots of each other and maybe the 50/53 would be faster....

Isn't this speed about in line with the one I posted for a new prospective buyer looking at a 50C when you told me "not to post about sometjing I know nothing about "???

"I think in that post I suggested a cruise speed of about 15/16 knots....ok so maybe I was a knot or two high....

Or is Jasper wrong too??"

Wow now youve got me down to 13kts.

Rob, that the trouble with getting all your info from brochures. Exactly how fast was the 50c you were on? Didnt you say the only one you ever saw was when you were a kid? Did you use the GPS with a NSEW speed run average?
Oh no wait, we didnt have GPS in the 80's. Well not quite we had a Magnavox unit on a Hinkley I sailed on but that only got a fix every several hours when the satelite flew over and the LORAN C was only accurate if the TD lines were close to 90*. Exactly how did you calculate those speeds?
Inquiring minds want to know.

 

[Jasper]

If the gauge showed 225 but the alarm didn't go off and the engine didn't "complain", I'd say the gauge was wrong! Shoot the thermostat housings from a couple of inches away with an IR temp gun and see what sort of reading you get.

Hi Guys,
Many thanks for all the advice.
IMPORTANTLY: NO ALARMS went off, so either the alarms are not operating or the gauges are wrong (Hopefully!)
At this temp, I was running only a few minutes (10max) before I noticed and pulled the pins back. Would any damage have been done?
Regards,
Jasper

 

[Glory]

Hi Guys,
Many thanks for all the advice.
IMPORTANTLY: NO ALARMS went off, so either the alarms are not operating or the gauges are wrong (Hopefully!)
At this temp, I was running only a few minutes (10max) before I noticed and pulled the pins back. Would any damage have been done?
Regards,
Jasper

You might want to remove the temp switche(s) wires and short them out to check the alarm curcuit. If that is good then you could wire them up to an ohm meter and toss them in a pot of water and heat them on the stove and see what temp they close, compared to the temp ingraved on the switch on the switch. If the results are NG replace them.

JM

 

[Canuck Dennis]

always remember.....Diesels..(.not like men.)..do NOT like it hot....they really like 185-190 and..talk to them when in the engine room..give them a little pat now and then...be surprised how well they respond...specially DD's

 

[Jasper]

always remember.....Diesels..(.not like men.)..do NOT like it hot....they really like 185-190 and..talk to them when in the engine room..give them a little pat now and then...be surprised how well they respond...specially DD's

I like your analogy!
My wife already calls the boat my "new Woman!....hehehh"
and I certainly caress those engines PLENTY!

 

[Canuck Dennis]

Now is the time to be really careful, new women are not usually very welcome..".is that an understatement or what."..suggest you find a different, non homo sapiens type as a reference. Just tell her it only responds to that yuckky diesel fuel stuff which real women don't.