I currently have one 20K el cheapo trans. cooler mounted in front of the AC condenser thinking of adding a B&M 24K super cooler mounted dope stlye.

? will having 2 coolers be better than just one keeping fliud cooler?if so by how many degrees?

I'm also considering adding a cooling fin for my extrenal trans. fliter are these any good for extra cooling?

Thanks

 

Yes, put 5 on it.

 

any sugestions on where to mount them enstien

 

5!?! Ha! Im thinking two will cool more than one, but will that help the tranny? i could be wrong but im thinking more than one would be over kill for a DD, doesnt the 4L60e have a optimum temp range? maybe just replace the el chepo?

 

Unless you run them in parallel (splitting the flow some that some goes directly to each cooler), you are best off using one large cooler, because liquid-to-air coolers (all coolers really) work most efficiently with the highest temperature differential. Let's say you have 2 coolers where the flow comes out of 1 into the other (which is what I think you were asking), each 60% efficient. Let's say your oil is 250 degrees going into the 1st one and it is 80 degrees outside. At 60% efficiency the oil will come out of the cooler at 148 degrees (250-80ambient = 170 degrees of heat above ambient air. 170 x .40 = 68. Output is 80ambient + 68degrees=148degrees).

Now you run the 148degree oil into another 60% efficient cooler:

(148-80ambient = 68degrees. 68 x .40 = 27.2. Output is 80ambient + 27.2 degrees=107.2degrees).

So you've added the weight and compexity of an additional cooler but only got a 40degree drop for your trouble, where the 1st one gave you a 102degree drop.

If you started with one large cooler that was 85% efficient, like B&M's stacked-plate SuperCooler (more efficient than the curved tube and fin cooler, more like your car radiator), and the same 250degree oil and 80degree ambient air, you would get:

250-80ambient = 170 degrees of heat above ambient air. 170 x .15 = 25.5. Output is 80ambient + 25.5degrees = 105.5degrees.

So less weight and complexity of 1 cooler with a larger temp differential wins the day. Remember the weight has to include a full cooler's worth of oil for every cooler, plus hardware and tubing.

If you ran a parallel install with the two coolers, you would have to do some testing to find the efficiency, but it might turn out to have similar results to the one large cooler. This is useful when your space available fits 2 smaller coolers over 1 large. But don't run them serially!

And all coolers need good airflow in and out - not just exposure to air.

Jim

 

Well..........for another 40 deg drop, I would do it.

Mec

 

One is more than enough. I have one and my temps spike at 150 and drop big time below 120 when Im moving.

 

I run 2 in series on my 97' C5............I also road race and want to make sure I keep my Rossler stage III in good shape, this set-up does great and adds a little more fluid to the system

 

What tranny oil temps do you see, and what is the outside air temp?

 

Now I think I need another one?

 

I can hot lap the car 9 times drag racing in 90+ degree heat before I get to 270..........with dex 6. Regular driving~700 mile trip 160-180 at 75-80 mph in 80 degree heat. Road racing max of 240~ in 70 degree with a 25 minute HARD session.
I will be road racing at VIR (4 mile road course) in July.........this will be the real test

all with an iron block 417 stroker to boot

 

I was thinking where I had my cooler was the key to cooler efficency maybe it's mounted to high on the AC cendenser?


installing a heavy duty cooler dope style (to the air deflector under the car) would work more efficent. I could get away w/ this using the B&M since it's durable but not w/ the el cheapo I think rocks would mess it up.

my current 20K cooler works fine on the expressway temp. usally never exceds 100 degrees even when outside temp is 80-90 degrees,(I installed it high hopping the hood opening would flow more air over it)


it's the big city traffic that causes the temp. to rise 180 -220 on hot days.

what do you guy's think of the finned device that fits over the external fliter I'll post a image of this device.

Paul nice setup w/ coolers.
?. is the B&M attached w/ a plastic tie wrap?

Thanks

 

If you can make one bigger cooler work, the fluid dlow is generally more efficent than flowing through 2 coolers. A 160 T-Stat with matching fan settings normally helps too as the fans run more and you are not adding 200* heat from the engine to the fluid.

I'd look at 2 coolers for more extreme situations such as road racing described above.

 

If you run 2, take the time to plumb them in parallel. The payoff in efficiency is well worth a little extra tubing and a couple Y-blocks. If you want to save a little money, you can use a T-fitting on the outbound oil, but I wouldn't do it on the inbound. Y's aren't that expensive.

Jim

 

Jim where can I purchase these Y fittings?

Thanks

 

Adding another cooler was one of my best mods. I run a 24k and an 18k they are both connected to each other with one line off the trans going to both. I can beat on mine for about 1hours with a 4000 stall and does go over 190.

 

2nd trans cooler is helping. B&M super cooler 24K nice sturdie piece.

I mounted it just above the air deflector.

intended to connect both in parraelle but can't find a Y connector Summit only had AN type stuff I want to use brass barbed type fittings so as for now there connected in series.

? what do you guy's think about me covering my external fliter with a finned device for more cooling I've sean them on the Jegs site but Jegs has discontinued them.

Thanks

 

I had two, a cheapo and the B&M supercooler. Took the cheap one off and the trans ran cooler.