Is there a problem of hooking up 2 Tru-Cool 4590 transmission coolers in series? The reason I am asking is I thinking about replacing my Tru-Cool 4739 with 2 smaller 4590's. I want to have one of coolers in use during the winter months and add the second cooler for towing during the summer months. I was wondering by doing that would I have any flow problems or anything with the transmission?
Thanks,
Griz
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95 F250, 4X4, E4OD, 4.10, Hypermax DP and Tymar 4" Exhaust System, Tymar Air & Coolant Filters and HPX Kit, Tymar fuel fill mod, External Transmission Filter, Schaeffer's ATF. Add-a-leaf, Redline Differential gear oil and Redline ATF in Transfer Case. OilGuard By-pass oil filter. Schaeffer's 5W-40 in the engine. A-Pillar...Autometer Boost, Pyrometer and Trans. Temp. Gages, Under dash...Oil Pressure and Water Temperature gages, 1705 Superchip Tuner, Stancor GPR, Factory Tech Valve Body, Evans Waterless Coolant, Two 4590 Tru-Cool Transmission Cooler in series, Explorer Overhead Console, Diesel Turbo Lifesaver, Tymar Fuel Filler Mod.
I don't have a problem with cooling I have a problem with over cooling during the winter months. I bought a thermal bypass unit and installed it in line with the cooler but than I have problems during the summer months when I tow slow up mountain roads. So my thought was to use one 4590 during the months I don't tow and use two 4590 hooked up in series when I do tow. The BTU rating of these two units together are slightly more than the 4739 but I was more worried about flow restrictions than added cooling with two units hooked up.
Griz
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95 F250, 4X4, E4OD, 4.10, Hypermax DP and Tymar 4" Exhaust System, Tymar Air & Coolant Filters and HPX Kit, Tymar fuel fill mod, External Transmission Filter, Schaeffer's ATF. Add-a-leaf, Redline Differential gear oil and Redline ATF in Transfer Case. OilGuard By-pass oil filter. Schaeffer's 5W-40 in the engine. A-Pillar...Autometer Boost, Pyrometer and Trans. Temp. Gages, Under dash...Oil Pressure and Water Temperature gages, 1705 Superchip Tuner, Stancor GPR, Factory Tech Valve Body, Evans Waterless Coolant, Two 4590 Tru-Cool Transmission Cooler in series, Explorer Overhead Console, Diesel Turbo Lifesaver, Tymar Fuel Filler Mod.
It's your truck so you are the one that has to be happy. But here is my suggestion. First, install all 3/8" lines. Next, make sure the cooler in the radiator flows well. What type, brand, of thermal bypass do you have? Mine is fully open at 180°, maybe sooner. Anything over 200 isn't bad. I'd be comfortable at 201° all day.
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2000 F250 Lariat CC SB 4x4 PSD Auto
What type, brand, of thermal bypass do you have? Mine is fully open at 180°, maybe sooner. Anything over 200 isn't bad. I'd be comfortable at 201° all day.
I have used the thermal bypass unit supplied by Tru-Cool and another from Perma Cool and wasn't happy with either.
Thanks for the info...I am back to the drawing board
Griz
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95 F250, 4X4, E4OD, 4.10, Hypermax DP and Tymar 4" Exhaust System, Tymar Air & Coolant Filters and HPX Kit, Tymar fuel fill mod, External Transmission Filter, Schaeffer's ATF. Add-a-leaf, Redline Differential gear oil and Redline ATF in Transfer Case. OilGuard By-pass oil filter. Schaeffer's 5W-40 in the engine. A-Pillar...Autometer Boost, Pyrometer and Trans. Temp. Gages, Under dash...Oil Pressure and Water Temperature gages, 1705 Superchip Tuner, Stancor GPR, Factory Tech Valve Body, Evans Waterless Coolant, Two 4590 Tru-Cool Transmission Cooler in series, Explorer Overhead Console, Diesel Turbo Lifesaver, Tymar Fuel Filler Mod.
1. Hook them up in parallel rather than in series. That way, you won't be worried at all about flow restriction, because there should be less flow restriction with two in parallel than you would have with only one.
2. Install a valve in the line leading to one of the coolers. That way, you won't have to remove one of the coolers during the winter. Just shut off the valve to one of the coolers in the winter so that only one is open during the winter. In the summer, open the valve to use both coolers. This will work if they are in parallel.
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2001 F350 XLT 4X4, shift on the fly, 38 gal fuel tank, running boards, sliding rear window, black, crew cab, long bed, 4.10, automatic transmission, 11,500 gvwr, 20,000 gcwr, 7500 gvw, dual rear wheels, 7.3l turbo diesel, completely stock, 114,00 miles when purchased, now has 125,000 miles, repairs so far: starter, batteries, cps.
2005 Nomad Rampage toyhauler made by Skyline. 11,500lb gvwr.
1. Hook them up in parallel rather than in series. That way, you won't be worried at all about flow restriction, because there should be less flow restriction with two in parallel than you would have with only one.
2. Install a valve in the line leading to one of the coolers. That way, you won't have to remove one of the coolers during the winter. Just shut off the valve to one of the coolers in the winter so that only one is open during the winter. In the summer, open the valve to use both coolers. This will work if they are in parallel.
You know you might be right. Thinking about it with them hooked up in parallel instead of in serial there shouldn't be any more flow restriction than there would be with one unit...maybe even less. And with the shut off valve in line with one of them, you could shut it Off when two cooler are not needed or On as needed.
Would tees as the connection points work for hooking them up in parallel? Right now I was planning to mount the coolers side by side in front of the A/C unit with their input/output lines facing down.
Griz
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95 F250, 4X4, E4OD, 4.10, Hypermax DP and Tymar 4" Exhaust System, Tymar Air & Coolant Filters and HPX Kit, Tymar fuel fill mod, External Transmission Filter, Schaeffer's ATF. Add-a-leaf, Redline Differential gear oil and Redline ATF in Transfer Case. OilGuard By-pass oil filter. Schaeffer's 5W-40 in the engine. A-Pillar...Autometer Boost, Pyrometer and Trans. Temp. Gages, Under dash...Oil Pressure and Water Temperature gages, 1705 Superchip Tuner, Stancor GPR, Factory Tech Valve Body, Evans Waterless Coolant, Two 4590 Tru-Cool Transmission Cooler in series, Explorer Overhead Console, Diesel Turbo Lifesaver, Tymar Fuel Filler Mod.
You know you might be right. Thinking about it with them hooked up in parallel instead of in serial there shouldn't be any more flow restriction than there would be with one unit...maybe even less. And with the shut off valve in line with one of them, you could shut it Off when two cooler are not needed or On as needed.
Would tees as the connection points work for hooking them up in parallel? Right now I was planning to mount the coolers side by side in front of the A/C unit with their input/output lines facing down.
Griz
Yes, you are going to have to put tees in there somewhere in order to hook them up in parallel. You could put a tee at the connection point of the input to one of the coolers. Run a line from the tee to the input of the other cooler. Put a second tee at the connection to the outlet of one of the coolers. Run the line from the outlet of the other cooler to the tee at the outlet of the first cooler.
Yes, you are right to put the input/output lines facing down so that contaminants do not collect in the coolers.
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2001 F350 XLT 4X4, shift on the fly, 38 gal fuel tank, running boards, sliding rear window, black, crew cab, long bed, 4.10, automatic transmission, 11,500 gvwr, 20,000 gcwr, 7500 gvw, dual rear wheels, 7.3l turbo diesel, completely stock, 114,00 miles when purchased, now has 125,000 miles, repairs so far: starter, batteries, cps.
2005 Nomad Rampage toyhauler made by Skyline. 11,500lb gvwr.
Yes, you are going to have to put tees in there somewhere in order to hook them up in parallel. You could put a tee at the connection point of the input to one of the coolers. Run a line from the tee to the input of the other cooler. Put a second tee at the connection to the outlet of one of the coolers. Run the line from the outlet of the other cooler to the tee at the outlet of the first cooler.
Yes, you are right to put the input/output lines facing down so that contaminants do not collect in the coolers.
That is what I did. I hooked them up and went for my first test drive. No leaking, no runs and no errors Thanks for the great idea
Griz
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95 F250, 4X4, E4OD, 4.10, Hypermax DP and Tymar 4" Exhaust System, Tymar Air & Coolant Filters and HPX Kit, Tymar fuel fill mod, External Transmission Filter, Schaeffer's ATF. Add-a-leaf, Redline Differential gear oil and Redline ATF in Transfer Case. OilGuard By-pass oil filter. Schaeffer's 5W-40 in the engine. A-Pillar...Autometer Boost, Pyrometer and Trans. Temp. Gages, Under dash...Oil Pressure and Water Temperature gages, 1705 Superchip Tuner, Stancor GPR, Factory Tech Valve Body, Evans Waterless Coolant, Two 4590 Tru-Cool Transmission Cooler in series, Explorer Overhead Console, Diesel Turbo Lifesaver, Tymar Fuel Filler Mod.
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Thanks for the great idea 
Linear Mode
