Perkins 4.154 mixing elbow blocked

[GILow]

Originally Posted by Bill O

Matt,
Your explanation was thorough and was what I assumed you did to determine the elbow was blocked.


I'm certain everyone was just trying to helpful.

Well, yes, but I’d rather they just addressed the question.

I know, it’s the internet, you get what you paid for, but really, it’s tiring.

Oeanda’s post made the whole thing worthwhile though. What a great contributor. They actually read my question, didn’t assume I was an idiot, and shared their experience of the very same fitting,

On happier news, I’ve got a forecast of 10 to 15 knots breeze, on the port quarter, deep reaching or running the whole way home. I’ve packed the smaller asym from my Swanson so I have two sizes of asym to choose from. Both have socks.

This should be fun.

[GILow]

Originally Posted by more

you say you change engine. remove small 3/4 eblow (very careful and slow)

drill couple hole total 20mm +



second what temperature you sea when you say engine overheating. is water in engine boil

for this engine is normal temperature 85-95°C everything under this range is cold

on engine not instruments.who care for instruments all this reading is usually huge +- on old + 2-3 year i use Automotive Infrared Thermometer

and my eyes .

eyes is best. if engine boiling this is not good

Thanks mate, all good advice.

The gauge is accurate. The engine boiled exactly when the gauge said it would.

[Nicholson58]

Originally Posted by GILow

Hi all,

Delivering a very neglected Kelly Peterson 44 at the moment. It has an original Perkins 4.154 which what I assume is a Bowman heat exchanger.

Raw water cooling flow is pretty poor, I’ve tracked it down to the mixing elbow which seems very restricted. Can’t see anything in the pipe itself and I’ve tried poking various wires down it to see if I can clean it out without any luck so far.

Any suggestions? I am tempted to drill straight through into the exhaust stream and bypass what looks to be some kind of Venturi style mixing passage.



Over to the brains trust…Attachment 252417

This is a known common problem. Two cruisers here in the Caribbean encountered this on the same Perkins.

Get a SS replacement and spare or remove and clean annually.

[AKA-None]

Originally Posted by Jim Cate

Ummm, Peter, hidden in every one of Matt's posts is t he following text, just below his screen name and avatar photo:



oin Date: Sep 2008

Location: On the boat, somewhere in Australia.

Boat: Swanson 42

Posts: 7,861



How much of a breadcrumb do you need?



Jim

To be fair you need to click on the user name to get the info if your in the app 8-)

[GILow]

Originally Posted by AKA-None

To be fair you need to click on the user name to get the info if your in the app 8-)

Well, to be totally fair, you shouldn’t ASSUME someone is from anywhere.

I always look to see before I recommend anything with geographical relevance. It is, after all, an international forum.

[alankeene]

Originally Posted by GILow

Sorry mate, I missed this one.

Happy to say that was Farenheit. 140 Celsius would have been a bit serious.

I'll will do an engine swap soon and in the process the boat will get metric instruments,

Water will never get any higher than 100 degrees C. (Grade 10 science). Thats why and when it turns to steam

[kmacdonald]

Originally Posted by alankeene

Water will never get any higher than 100 degrees C. (Grade 10 science). Thats why and when it turns to steam

Yes it will. Boiling point is a function of pressure and hence the radiator cap pressure relief settings.

[alankeene]

Originally Posted by kmacdonald

Yes it will. Boiling point is a function of pressure and hence the radiator cap pressure relief settings.

Ah yes. Thanks Kmacdonald. I should have attended those science classes a bit more diligently!!

[GILow]

Originally Posted by alankeene

Water will never get any higher than 100 degrees C. (Grade 10 science). Thats why and when it turns to steam

Along with science I suggest you take irony lessons.

[Wotname]

This whole 140 degrees F or C thing was pretty clear from GILow's post

Temperature steady on 140, I will wait another hour and if the temperature has not moved I will add 100 rpm.

if one stops to think.

Engine is Perkins 4.154 i.e. old school coolant cooled engine.
Pressure cap would be less than 15 psi

With the best engine coolant and the best pressure cap, the boiling temperature would be ~125C but given the description of the boat, very likely to be more like 110C.

No way could it be steady at 140C and still be running, ergo 140 was F.

[GILow]

Originally Posted by Wotname

This whole 140 degrees F or C thing was pretty clear from GILow's post

if one stops to think.



Engine is Perkins 4.154 i.e. old school coolant cooled engine.

Pressure cap would be less than 15 psi



With the best engine coolant and the best pressure cap, the boiling temperature would be ~125C but given the description of the boat, very likely to be more like 110C.



No way could it be steady at 140C and still be running, ergo 140 was F.

I think we just need an irony font.

Although a statement like “140 Celsius would have been a bit serious” should have been self-evidently ironic.

[alankeene]

Originally Posted by GILow

Along with science I suggest you take irony lessons.

All I was trying to point out was that the 140 degrees that was questioned was obviously Farenheit. Pressure wouldn’t bring the water temp to 140 C. The cap would pop before then. Nothing to do with irony

[Nicholson58]

Got a love this generator exhaust. Lovely steam cloud including continuous hissing noise.

Jolly Harbor, Antigua

[GILow]

Originally Posted by Nicholson58

Got a love this generator exhaust. Lovely steam cloud including continuous hissing noise.



Jolly Harbor, Antigua

Jet boat?