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Author Topic: Thermostat mod cooling system  (Read 40670 times)
69 Merc
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« Reply #30 on: June 14, 2013, 09:10:21 am »

my caps are 6 yrs old


Are they rubber or nylon caps?
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Robert's 1969 Mercury Montego (FordStrokers 408W, QFT 850cfm RQ-AN, Super Victor, 1" aluminum open spacer, CamMotion HR .624"/.609" 251*/256* 108* LSA, 1-3/4"x3-1/2" headers, Dynomax Ultra #17224 mufflers, C6/4R100 trans, 8"/9" 5500 converter, Broader Performance manual V/B, 9" 4.56 Detroit Truetrac, Hoosier Pro Street 31x12.5R15 on 10" rims)

The Merc started here = http://sbftech.com/index.php/topic,27178.0.html  Now = http://sbftech.com/index.php/topic,34648.0.html

Thanks to Jim "Woody" and Nicole Woods @ FordStrokers 408W, Westminster Performance Transmission (W.P.T.) transmissions, TCS Performance converters, Broader Performance valvebodies and last but not least a BIG thanks (always) to my friends here and abroad in the World!
wywindsor
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« Reply #31 on: June 14, 2013, 07:56:17 pm »

I took the t stat out and went for a drive. It runs about 200 most of the time and 210 with ac on. Don't know where to go from here other rhan taking off the supercharger and go test it.
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turbo2256
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« Reply #32 on: June 15, 2013, 07:22:30 pm »

One issue with the SBF set up is the impellor cavity of the water pump doset fill completey unless a bleeder valve is added or, you have a way to vacuum fill the engine coolant the way the factory does. With air in the impeller cavity pump efficency is lost also causes the coolant to boil at a lower temp due to cavitation.
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turbo2256
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« Reply #33 on: June 15, 2013, 07:24:19 pm »

I took the t stat out and went for a drive. It runs about 200 most of the time and 210 with ac on. Don't know where to go from here other rhan taking off the supercharger and go test it.

Try a restrictor plate in place of the thermostat. Start with about a 5/8 hole.
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wywindsor
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« Reply #34 on: June 16, 2013, 09:54:02 pm »

What is the bleeder valve mod?
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wywindsor
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« Reply #35 on: June 17, 2013, 08:30:13 pm »

Installed a restrictor plate with a 11/16' hole. I now run abou 185 low side and 198 on the high side. This is on the throttle up hill at about 4o mph and coasting down hill. On the high way about 190 at 60 mph.

                        This I can live with. It's 89 degree's out now so we will see.
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69 Merc
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« Reply #36 on: June 17, 2013, 09:06:20 pm »

Installed a restrictor plate with a 11/16' hole. I now run abou 185 low side and 198 on the high side. This is on the throttle up hill at about 4o mph and coasting down hill. On the high way about 190 at 60 mph.

                        This I can live with. It's 89 degree's out now so we will see.


How long did it take to heat-up after a cold start?
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Robert's 1969 Mercury Montego (FordStrokers 408W, QFT 850cfm RQ-AN, Super Victor, 1" aluminum open spacer, CamMotion HR .624"/.609" 251*/256* 108* LSA, 1-3/4"x3-1/2" headers, Dynomax Ultra #17224 mufflers, C6/4R100 trans, 8"/9" 5500 converter, Broader Performance manual V/B, 9" 4.56 Detroit Truetrac, Hoosier Pro Street 31x12.5R15 on 10" rims)

The Merc started here = http://sbftech.com/index.php/topic,27178.0.html  Now = http://sbftech.com/index.php/topic,34648.0.html

Thanks to Jim "Woody" and Nicole Woods @ FordStrokers 408W, Westminster Performance Transmission (W.P.T.) transmissions, TCS Performance converters, Broader Performance valvebodies and last but not least a BIG thanks (always) to my friends here and abroad in the World!
z-adamson
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« Reply #37 on: June 17, 2013, 09:06:28 pm »

Installed a restrictor plate with a 11/16' hole. I now run abou 185 low side and 198 on the high side. This is on the throttle up hill at about 4o mph and coasting down hill. On the high way about 190 at 60 mph.

                        This I can live with. It's 89 degree's out now so we will see.

Just to be clear, you went from no thermostat/no restrictor to a restrictor with an 11/16 hole and it runs cooler with the restrictor in place.
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z-adamson
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« Reply #38 on: June 17, 2013, 09:10:02 pm »

How long did it take to heat-up after a cold start?

Hey merc, remember when you said that slowing down coolant going through the radiator could not possibly increase cooling capacity? That this whole idea is a myth?

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69 Merc
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« Reply #39 on: June 17, 2013, 10:23:28 pm »

How long did it take to heat-up after a cold start?

Hey merc, remember when you said that slowing down coolant going through the radiator could not possibly increase cooling capacity? That this whole idea is a myth?




Yes, because when you are slowing down coolant in the radiator you are also slowing down the coolant in the block because it is a CLOSED system that is UNDER pressure.

Think about it ...
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Robert's 1969 Mercury Montego (FordStrokers 408W, QFT 850cfm RQ-AN, Super Victor, 1" aluminum open spacer, CamMotion HR .624"/.609" 251*/256* 108* LSA, 1-3/4"x3-1/2" headers, Dynomax Ultra #17224 mufflers, C6/4R100 trans, 8"/9" 5500 converter, Broader Performance manual V/B, 9" 4.56 Detroit Truetrac, Hoosier Pro Street 31x12.5R15 on 10" rims)

The Merc started here = http://sbftech.com/index.php/topic,27178.0.html  Now = http://sbftech.com/index.php/topic,34648.0.html

Thanks to Jim "Woody" and Nicole Woods @ FordStrokers 408W, Westminster Performance Transmission (W.P.T.) transmissions, TCS Performance converters, Broader Performance valvebodies and last but not least a BIG thanks (always) to my friends here and abroad in the World!
mxracer652
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« Reply #40 on: June 17, 2013, 10:26:29 pm »

Hey merc, remember when you said that slowing down coolant going through the radiator could not possibly increase cooling capacity? That this whole idea is a myth?
You are so fucking dense & simplistic, it borders on idiocy.
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z-adamson
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« Reply #41 on: June 17, 2013, 11:08:14 pm »

Yes, because when you are slowing down coolant in the radiator you are also slowing down the coolant in the block because it is a CLOSED system that is UNDER pressure.

Think about it ...

I have slowed to the coolant and seen a lower operating temp, wywindsor just did the same thing to his engine and saw the same result, juicedcoupe has seen the same thing at his work.
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z-adamson
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« Reply #42 on: June 17, 2013, 11:13:17 pm »

You are so fucking dense & simplistic, it borders on idiocy.

At least I can get a simple ignition system to work...
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69 Merc
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« Reply #43 on: June 17, 2013, 11:24:10 pm »

Yes, because when you are slowing down coolant in the radiator you are also slowing down the coolant in the block because it is a CLOSED system that is UNDER pressure.

Think about it ...

I have slowed to the coolant and seen a lower operating temp, wywindsor just did the same thing to his engine and saw the same result, juicedcoupe has seen the same thing at his work.


On a closed system how do you "slow the coolant" by adding or removing a restricting device?

Pressure goes up or pressure goes down.

Changing the water pump and/or pulley can slow or speed up your system, right?
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Robert's 1969 Mercury Montego (FordStrokers 408W, QFT 850cfm RQ-AN, Super Victor, 1" aluminum open spacer, CamMotion HR .624"/.609" 251*/256* 108* LSA, 1-3/4"x3-1/2" headers, Dynomax Ultra #17224 mufflers, C6/4R100 trans, 8"/9" 5500 converter, Broader Performance manual V/B, 9" 4.56 Detroit Truetrac, Hoosier Pro Street 31x12.5R15 on 10" rims)

The Merc started here = http://sbftech.com/index.php/topic,27178.0.html  Now = http://sbftech.com/index.php/topic,34648.0.html

Thanks to Jim "Woody" and Nicole Woods @ FordStrokers 408W, Westminster Performance Transmission (W.P.T.) transmissions, TCS Performance converters, Broader Performance valvebodies and last but not least a BIG thanks (always) to my friends here and abroad in the World!
wywindsor
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« Reply #44 on: June 18, 2013, 08:40:31 am »

It did take a hellva long time to come up to temp. I don't recall the exact time but a lot longer than normal.
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