Perkins 4.108 overheating

Posted by michel.capel (michel.capel@…>)

Guys, lend me your brains for a minute.

Yesterday I had my first trip - under engine - with my half
refurbished F44 catketch. We went from Goes to Strijensas. In
Zeeland, the Netherlands, that is. A 7 1/2 hour trip under engine
with fairly good conditions. Earlier, I had engine overheating
problems, so I replaced the thermostat, cleaned the heat exchanger
and checked if the water was being pumped around in both the fresh
water and the seawater cooling system. It did. I test ran the engine
under load tied to the dock up to 2200 revs without problems.

Yesterday, everything went well up to 2600 revs. But we could only do
about 5.5 knots, with 15 knots of wind on the quarter 6.2 kts.
Revving up to 3000, the engine began to overheat soon. However, the
seawater side of the cooling system remained cold; as cold on the
exhaust injection side as on the intake side. The freshwater cooling
system got hot. The expansion tank was hot and blowing out boiling
water and steam. The heat exchanger was not as hot as the expansion
tank, so some heat exchange to the seawater was happening.

What could be the problem?
I did not take apart the fresh water pump (yet) so I don’t know how
the fins are. And I know I need to replace the V-belt, it’s worn,
although it still works.

Any clues?

Thanks for thinking along with me.
Michel Capel

Posted by Herman and Gail Schiller (hschiller2@…>)

Michel,
I’m guessing that the freshwater pump belt is slipping (without
squealing) at the higher RPM. Centrifugal force increases the
belt’s diameter and the pump requires more power, too. Certainly
it’s the easier item to replace first. Herm

At 06:04 PM 2/24/2007, you wrote:

Guys, lend me your brains for a minute.

Yesterday I had my first trip - under engine - with my half
refurbished F44 catketch. We went from Goes to Strijensas. In
Zeeland, the Netherlands, that is. A 7 1/2 hour trip under engine
with fairly good conditions. Earlier, I had engine overheating
problems, so I replaced the thermostat, cleaned the heat exchanger
and checked if the water was being pumped around in both the fresh
water and the seawater cooling system. It did. I test ran the engine
under load tied to the dock up to 2200 revs without problems.

Yesterday, everything went well up to 2600 revs. But we could only do
about 5.5 knots, with 15 knots of wind on the quarter 6.2 kts.
Revving up to 3000, the engine began to overheat soon. However, the
seawater side of the cooling system remained cold; as cold on the
exhaust injection side as on the intake side. The freshwater cooling
system got hot. The expansion tank was hot and blowing out boiling
water and steam. The heat exchanger was not as hot as the expansion
tank, so some heat exchange to the seawater was happening.

What could be the problem?
I did not take apart the fresh water pump (yet) so I don’t know how
the fins are. And I know I need to replace the V-belt, it’s worn,
although it still works.

Any clues?

Thanks for thinking along with me.
Michel Capel

Posted by svfantasy@… (svfantasy@…>)
Michel,
I recently flushed my fresh water system and cleaned the heat exchanger on my 4-108. When I replaced the coolant my mechanic advised about air being trapped while refilling the coolant. An old trick he uses is to fill the header tank, then as disgusting as it sounds, blow into the filler port and listen for gurgling sounds. Add more coolant and repeat until you no longer hear the gurging sounds. This purges the system of trapped air. It worked for me. So, if you recently replaced your coolant you might have air trapped. Another mechanic I know has never heard of this practice, so it might not be accurate. But try it, it ay help.
Jay Glen
F40 CK “Fantasy”
San Francisco Bay

Posted by Herman and Gail Schiller (hschiller2@…>)

This is a common enough problem in automotive cooling systems. The
Chrysler 2.5 liter four-cylinder engine has a plug near the
thermostat specifically for releasing air from the system. I’d look
for a plug near the top of the cooling system, suitable for bleeding
air from the cooling system. Herm

At 09:58 PM 2/24/2007, you wrote:

Michel,

I recently flushed my fresh water system and cleaned the heat
exchanger on my 4-108. When I replaced the coolant my mechanic
advised about air being trapped while refilling the coolant. An old
trick he uses is to fill the header tank, then as disgusting as it
sounds, blow into the filler port and listen for gurgling sounds.
Add more coolant and repeat until you no longer hear the gurging
sounds. This purges the system of trapped air. It worked for me. So,
if you recently replaced your coolant you might have air trapped.
Another mechanic I know has never heard of this practice, so it
might not be accurate. But try it, it ay help.

Jay Glen

F40 CK “Fantasy”

San Francisco Bay

Posted by Van Taiariol (vtaiariol@…>)

— In freedomyachts2003@yahoogroups.com, “michel.capel”
<michel.capel@…> wrote:

Hi Mike,

I assumed that when you replaced the coolant, you diluted it
50/50 with water. Heat transfer of pure Glycol is not as good as the
mix.
BTW: Lugger recommends using distilled water to dilute.
They have had problems with precipitates forming when people
use tap water.

Regards,

Van, also in SF

Guys, lend me your brains for a minute.

Yesterday I had my first trip - under engine - with my half
refurbished F44 catketch. We went from Goes to Strijensas. In
Zeeland, the Netherlands, that is. A 7 1/2 hour trip under engine
with fairly good conditions. Earlier, I had engine overheating
problems, so I replaced the thermostat, cleaned the heat exchanger
and checked if the water was being pumped around in both the fresh
water and the seawater cooling system. It did. I test ran the
engine
under load tied to the dock up to 2200 revs without problems.

Yesterday, everything went well up to 2600 revs. But we could only
do
about 5.5 knots, with 15 knots of wind on the quarter 6.2 kts.
Revving up to 3000, the engine began to overheat soon. However,
the
seawater side of the cooling system remained cold; as cold on the
exhaust injection side as on the intake side. The freshwater
cooling
system got hot. The expansion tank was hot and blowing out
boiling
water and steam. The heat exchanger was not as hot as the
expansion
tank, so some heat exchange to the seawater was happening.

What could be the problem?
I did not take apart the fresh water pump (yet) so I don’t know
how
the fins are. And I know I need to replace the V-belt, it’s worn,
although it still works.

Any clues?

Thanks for thinking along with me.
Michel Capel

Posted by Thomas Wales (twales@…>)

My overheating problem resulted from an airblock between the hot water
heater and the circulating pump. While the engine is running, we “burped”
the system by loosening the hose that exits the hot water tank and
releasing the air. Hope your problem is that simple
Good luck
TW
F32 #20



At 11:04 PM 2/24/2007 +0000, you wrote:

Guys, lend me your brains for a minute.

Yesterday I had my first trip - under engine - with my half
refurbished F44 catketch. We went from Goes to Strijensas. In
Zeeland, the Netherlands, that is. A 7 1/2 hour trip under engine
with fairly good conditions. Earlier, I had engine overheating
problems, so I replaced the thermostat, cleaned the heat exchanger
and checked if the water was being pumped around in both the fresh
water and the seawater cooling system. It did. I test ran the engine
under load tied to the dock up to 2200 revs without problems.

Yesterday, everything went well up to 2600 revs. But we could only do
about 5.5 knots, with 15 knots of wind on the quarter 6.2 kts.
Revving up to 3000, the engine began to overheat soon. However, the
seawater side of the cooling system remained cold; as cold on the
exhaust injection side as on the intake side. The freshwater cooling
system got hot. The expansion tank was hot and blowing out boiling
water and steam. The heat exchanger was not as hot as the expansion
tank, so some heat exchange to the seawater was happening.

What could be the problem?
I did not take apart the fresh water pump (yet) so I don’t know how
the fins are. And I know I need to replace the V-belt, it’s worn,
although it still works.

Any clues?

Thanks for thinking along with me.
Michel Capel

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3:16 PM

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PM

Posted by michel.capel (michel.capel@…>)

Herm,
I’m going to change the belt this Friday. I’ll keep you posted to
what happens next.

Michel


— In freedomyachts2003@yahoogroups.com, Herman and Gail Schiller
<hschiller2@…> wrote:

Michel,
I’m guessing that the freshwater pump belt is slipping (without
squealing) at the higher RPM. Centrifugal force increases the
belt’s diameter and the pump requires more power, too. Certainly
it’s the easier item to replace first. Herm

At 06:04 PM 2/24/2007, you wrote:

Guys, lend me your brains for a minute.

Yesterday I had my first trip - under engine - with my half
refurbished F44 catketch. We went from Goes to Strijensas. In
Zeeland, the Netherlands, that is. A 7 1/2 hour trip under engine
with fairly good conditions. Earlier, I had engine overheating
problems, so I replaced the thermostat, cleaned the heat exchanger
and checked if the water was being pumped around in both the fresh
water and the seawater cooling system. It did. I test ran the
engine
under load tied to the dock up to 2200 revs without problems.

Yesterday, everything went well up to 2600 revs. But we could only
do
about 5.5 knots, with 15 knots of wind on the quarter 6.2 kts.
Revving up to 3000, the engine began to overheat soon. However, the
seawater side of the cooling system remained cold; as cold on the
exhaust injection side as on the intake side. The freshwater
cooling
system got hot. The expansion tank was hot and blowing out boiling
water and steam. The heat exchanger was not as hot as the expansion
tank, so some heat exchange to the seawater was happening.

What could be the problem?
I did not take apart the fresh water pump (yet) so I don’t know how
the fins are. And I know I need to replace the V-belt, it’s worn,
although it still works.

Any clues?

Thanks for thinking along with me.
Michel Capel

Posted by andre laviolette (andrelaviolette@…>)
I had the same problem on my old Westerbeke. The hoses between the hot water tank and the engine would colapse at a certain temperature i.e.hi speed. The rubber on the inside of the wire core would separate from the rubber on the outrside, restricting the flow. Bipassing the hot water tank with a radiator hose elbow solved the issue. New hot water tank hoses were replaced later. Is your hot water tank higher than the header tank on the engine?Thomas Wales <twales@…> wrote: My overheating problem resulted from an airblock between the hot water heater and the circulating pump. While the engine is running, we “burped” the system by loosening the hose that exits the hot water tank and releasing the air. Hope your problem is that simpleGood luckTWF32 #20At 11:04 PM
2/24/2007 +0000, you wrote:>Guys, lend me your brains for a minute.>>Yesterday I had my first trip - under engine - with my half>refurbished F44 catketch. We went from Goes to Strijensas. In>Zeeland, the Netherlands, that is. A 7 1/2 hour trip under engine>with fairly good conditions. Earlier, I had engine overheating>problems, so I replaced the thermostat, cleaned the heat exchanger>and checked if the water was being pumped around in both the fresh>water and the seawater cooling system. It did. I test ran the engine>under load tied to the dock up to 2200 revs without problems.>>Yesterday, everything went well up to 2600 revs. But we could only do>about 5.5 knots, with 15 knots of wind on the quarter 6.2 kts.>Revving up to 3000, the engine began to overheat soon. However, the>seawater side of the cooling system remained cold; as cold on the>exhaust injection
side as on the intake side. The freshwater cooling>system got hot. The expansion tank was hot and blowing out boiling>water and steam. The heat exchanger was not as hot as the expansion>tank, so some heat exchange to the seawater was happening.>>What could be the problem?>I did not take apart the fresh water pump (yet) so I don’t know how>the fins are. And I know I need to replace the V-belt, it’s worn,>although it still works.>>Any clues?>>Thanks for thinking along with me.>Michel Capel>>>>No virus found in this incoming message.>Checked by AVG Free Edition.>Version: 7.5.446 / Virus Database: 268.18.4/702 - Release Date: 2/25/2007 >3:16 PMNo virus found in this outgoing message.Checked by AVG Free Edition.Version: 7.5.446 / Virus Database: 268.18.4/702 - Release Date: 2/25/2007 3:16 PM
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Posted by michel.capel (michel.capel@…>)

Andre,
My hot watertank is mounted lower that the expansion tank. I’m quite
positive the hoses are okay; they heat up as quickly as the rest of
the tubes and hoses.
Michel


— In freedomyachts2003@yahoogroups.com, andre laviolette
<andrelaviolette@…> wrote:

I had the same problem on my old Westerbeke. The hoses between the
hot water tank and the engine would colapse at a certain temperature
i.e.hi speed. The rubber on the inside of the wire core would
separate from the rubber on the outrside, restricting the flow.
Bipassing the hot water tank with a radiator hose elbow solved the
issue. New hot water tank hoses were replaced later.
Is your hot water tank higher than the header tank on the engine?

Thomas Wales <twales@…> wrote:
My overheating problem resulted from an airblock between the hot
water
heater and the circulating pump. While the engine is running,
we “burped”
the system by loosening the hose that exits the hot water tank and
releasing the air. Hope your problem is that simple
Good luck
TW
F32 #20

At 11:04 PM 2/24/2007 +0000, you wrote:

Guys, lend me your brains for a minute.

Yesterday I had my first trip - under engine - with my half
refurbished F44 catketch. We went from Goes to Strijensas. In
Zeeland, the Netherlands, that is. A 7 1/2 hour trip under engine
with fairly good conditions. Earlier, I had engine overheating
problems, so I replaced the thermostat, cleaned the heat exchanger
and checked if the water was being pumped around in both the fresh
water and the seawater cooling system. It did. I test ran the
engine
under load tied to the dock up to 2200 revs without problems.

Yesterday, everything went well up to 2600 revs. But we could only
do
about 5.5 knots, with 15 knots of wind on the quarter 6.2 kts.
Revving up to 3000, the engine began to overheat soon. However, the
seawater side of the cooling system remained cold; as cold on the
exhaust injection side as on the intake side. The freshwater
cooling
system got hot. The expansion tank was hot and blowing out boiling
water and steam. The heat exchanger was not as hot as the expansion
tank, so some heat exchange to the seawater was happening.

What could be the problem?
I did not take apart the fresh water pump (yet) so I don’t know how
the fins are. And I know I need to replace the V-belt, it’s worn,
although it still works.

Any clues?

Thanks for thinking along with me.
Michel Capel

No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.5.446 / Virus Database: 268.18.4/702 - Release Date:
2/25/2007
3:16 PM

No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.446 / Virus Database: 268.18.4/702 - Release Date:
2/25/2007 3:16 PM


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