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Author Topic: cooling problem with v8 pinto  (Read 7075 times)

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Offline pegasus2050

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cooling problem with v8 pinto
« on: April 22, 2006, 12:22:03 PM »
my son's pinto has a 3 row radiator in it but still reaches about 220 to
230 degrees in hot weather unless running about 30 to 40 mph. we
also have a 16 inch electric fan mounted in front of the radiator push-
ing air. not enough room to mount it behind the radiator to pull air. any
help with this problem would be welcomed. thanks pegasus.

Offline turbopinto72

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Re: cooling problem with v8 pinto
« Reply #1 on: April 22, 2006, 01:07:04 PM »
Try using a "water wetter" in the coolant.
Brad F
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Offline Prostreet49335

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Re: cooling problem with v8 pinto
« Reply #2 on: April 22, 2006, 01:07:24 PM »
Try a 190 thermostat I ran a160 in my pinto when i had a 302 in it ran hot put a 190 in it ran 190 all day in stop&go traffic

Offline 80pinto302

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Re: cooling problem with v8 pinto
« Reply #3 on: May 03, 2006, 07:25:50 PM »
Do You have a cowl induction style hood? if so the air is wanting to excape there and its an induction area too so if the air is trying to excape and enter at the same time its like a brick wall of air..WOO IM SMART 15 years old and look what i thought of god someone give me a cookie
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got my full lisence! wooo

Offline turbopinto72

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Re: cooling problem with v8 pinto
« Reply #4 on: May 03, 2006, 11:14:23 PM »
Do You have a cowl induction style hood? if so the air is wanting to excape there and its an induction area too so if the air is trying to excape and enter at the same time its like a brick wall of air..WOO IM SMART 15 years old and look what i thought of god someone give me a cookie

What.......... :what: :what:
Brad F
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Offline wagonmaster

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Re: cooling problem with v8 pinto
« Reply #5 on: May 03, 2006, 11:24:21 PM »
I'm with you Brad!!!  ??? ???
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Offline madmax96101

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Re: cooling problem with v8 pinto
« Reply #6 on: May 03, 2006, 11:37:55 PM »
Do You have a cowl induction style hood? if so the air is wanting to excape there and its an induction area too so if the air is trying to excape and enter at the same time its like a brick wall of air..WOO IM SMART 15 years old and look what i thought of god someone give me a cookie
this makes no sense at all. it would be forcing hot air out of the engine compartment which would help keep it a little bit cooler. or it would pull more air in and down past the motor. either way it helps cool it a little.

Pintony

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Re: cooling problem with v8 pinto
« Reply #7 on: May 04, 2006, 12:27:52 AM »
my son's pinto has a 3 row radiator in it but still reaches about 220 to
230 degrees in hot weather unless running about 30 to 40 mph. we
also have a 16 inch electric fan mounted in front of the radiator push-
ing air. not enough room to mount it behind the radiator to pull air. any
help with this problem would be welcomed. thanks pegasus.

 If you have room put a plastic mechanical fan back on the waterpump.
 The electric fans will not pull the kind of air that a mech. fan will pull.
 You might also try a shroud.
 Also bump your timming back a bit.
 If your engine is running rich at idle?
 That will cause excess exhaust temps.
 From Pintony
 From Pintony

Offline Gaslight

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Re: cooling problem with v8 pinto
« Reply #8 on: May 04, 2006, 07:49:34 AM »
my son's pinto has a 3 row radiator in it but still reaches about 220 to
230 degrees in hot weather unless running about 30 to 40 mph. we
also have a 16 inch electric fan mounted in front of the radiator push-
ing air. not enough room to mount it behind the radiator to pull air. any
help with this problem would be welcomed. thanks pegasus.

  This is something I get involved with all the time on hot rods.  My first question would be have you had the system pressure tested to make sure that it will hold the required pressure at all?  Same goes with the cap.  What cap are you running?  Is it a lever-vent?  Do you have an overflow bottle or ar you allowing it to just over flow onto the ground?  Are you running a coolant mix or just straight water?  These are questions to ask and answer before really running onto the mechanical parts.  Also which fan are you using?  There are a couple of fans that have been tested to actually push and pull air as well as a mechanical fan and none of them are made by Flexlite.  Also what are you using to control the fan as far as on and off?

Jake
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Offline 80pinto302

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Re: cooling problem with v8 pinto
« Reply #9 on: May 04, 2006, 11:38:52 AM »
it makes sence though its such a small engine compartement and it cant excape anywhere else so the cowl is a like high presure zone and the scoop would be trying to induct the air right? so the air is just stuck there i dunno i might be wrong but i think it makes sence.. but yeah i see what you mean im not an expert so..
1980 pinto 302 c4 auto 4:10's
got my full lisence! wooo

Offline fast34

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Re: cooling problem with v8 pinto
« Reply #10 on: May 07, 2006, 03:17:35 PM »
If there is a fan pushing/pulling air, through the radiator, then why would it try and do the same through the cowl???  It is impossible to do what your speaking of.

Offline goodolboydws

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Re: cooling problem with v8 pinto
« Reply #11 on: May 22, 2006, 02:24:05 PM »
Just a shot in the dark here, because the same thing happened to me once and it took a while to track it down.

Check for a VERY slow leak of coolant from the cooling system.

I needed a cooling system pressure tester and patience to find mine, as the engine would evidently only ordinarily lose the coolant above a certain temperature and PRESSURE, (which was not being reached unless the car was being driven). Even with the pressure tester, the radiator cap was fine, and the system initially looked to be leak free, but after leaving the tester pressurized to approximately the upper limit of the standard radiator cap, and taking a short break, the leak began to be noticible. This time lag may well have been because the coolant was not hot at the time the testing was being done and differential thermal expansion was not taking place . (In my trucks' case, it turned out to be just a very slightly too loose hose clamp on a radiator hose which had been replaced several months earlier.)

If there is a leakage path for coolant, the same passage can admit air once the engine is shut down and cools, as then the coolant volume decreases. (This is when the coolant is normally sucked back into the engine from the expansion/overflow tank.)

This results in some air being trapped in the cooling sysyem.  On many engines, when air is trapped in the cooling system, the internal metal of the engine adjacent to the area where the air is, can get much hotter than if it was in continuous, direct contact with the coolant, so, when coolant DOES contact that area, that coolant can get superheated and turn to steam, which will raise the temperature (and pressure) of the rest of the coolant. If the leak is severe enough to allow a lot of air to be trapped, the resultant pressure buildup can blow off a hose or a fitting, or even burst a radiator, whichever is the weakest link in the system.

Offline wantapinto

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Re: cooling problem with v8 pinto
« Reply #12 on: May 26, 2006, 06:31:14 PM »
Not trying to be know it all but..I believe the Water Wetter that Turbopinto72 mentioned before is ment to solve the problem of steam pockets you are mentioning. Something about reducing surface tention of the water .OLD BMW's had a lot of cooling problems and water wetter helped a lot!!

Newer Camero's are a pain in the butt to bleed bubbles out to when changing thermostat..I found water wetter helped even the bleeding of air bubbles before vacumn Cooling System Fillers came around.

Try the water wetter first....Cheap est try..might as well give it a whirl.

Oh Yeah..on the cooling system pressurizing method...Pump up to 13 lbs of so ...if no leaks found and you have the time...leave the system pressurized and put a dry 2 foot by 4 foot or so piece of cardboard under the engine...leave overnight and check for marks on the cardboard in the morn.Hope it helps, Dave
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