B&M Transmission Cooler; Location & Size & Orientation

[UTEP]

Hmmm, that's odd, since their instructions clearly state the cooler should fill from the bottom. Maybe there was a confusion of terms over the phone? Here's the link to their instructions. IMO, I'd trust their written instructions over the guy on the phone.

http://bmracing.com/wp-bnmcont/uploads/bm_cooler_techdoc.pdf

I think the guy on the phone might have been wrong, or was referring to the tranny inlet and outlet (which are opposite of the cooler inlet and outlet).

You are referring to an artistic graphic showing horizontal. Rotate clockwise it's in the top; rotate counter clockwise it's the bottom...

It's a cartoon illustrating the circuit; out to radiator first.

Warren

 

[Robb235]

"When mounting the cooler with the fittings on the right or left side, the lower fitting must be the inlet with the top fitting routing the fluid back to the transmission."

 

[quicksilvr]

I ran a 70268 for a year on one of my 4runners, a '99. Temps were monitored with a ScanGauge II. I was satisfied with those temps, but wanted a little more cooling.

I have been running a 70264 on my current 2001 Supercharged 4runner, and am VERY happy with the ATF temps I see. It very rarely touches 170, and is usually between 140-160.

My experience shows the 70264 as the best cooler for bypassing the radiator on a 3rd gen 4runner. At least in the midwest, with a highly variable climate. 100 degree's in the summer, 0 degrees in the winter.

 

[Robb235]

I ran a 70268 for a year on one of my 4runners, a '99. Temps were monitored with a ScanGauge II. I was satisfied with those temps, but wanted a little more cooling.

I have been running a 70264 on my current 2001 Supercharged 4runner, and am VERY happy with the ATF temps I see. It very rarely touches 170, and is usually between 140-160.

My experience shows the 70264 as the best cooler for bypassing the radiator on a 3rd gen 4runner. At least in the midwest, with a highly variable climate. 100 degree's in the summer, 0 degrees in the winter.

What did your temps look like before you bypassed the radiator?

Do you tow?

 

[mmml4]

From the B&M instruction sheet.

● Mount the B&M SuperCooler with the fittings on
top or on the sides. It is not recommended to
mount the cooler with the fittings pointing down as
this may create an air pocket in the cooler resulting
in reduced cooling efficiency. When mounting the
cooler with the fittings on the right or left side, lower fitting must be the inlet with the top fitting routing the fluid back to the transmission.

 

[UTEP]

From the B&M instruction sheet.

● Mount the B&M SuperCooler with the fittings on
top or on the sides. It is not recommended to
mount the cooler with the fittings pointing down as
this may create an air pocket in the cooler resulting
in reduced cooling efficiency. When mounting the
cooler with the fittings on the right or left side, lower fitting must be the inlet with the top fitting routing the fluid back to the transmission.

...sigh...

Why can't B&M be consistent... No where in my directions is this stated...

Oh well not too hard to switch.

Thanks for pointing this out.

W

 

[Nelsonmd]

...sigh...

Why can't B&M be consistent... No where in my directions is this stated...

Oh well not too hard to switch.

Thanks for pointing this out.

W

Yeah, that's why I try to reference the same instructions every time this comes up.

Plus I just reference the one that I know is right :hatsoff:

 

[quicksilvr]

What did your temps look like before you bypassed the radiator?

Do you tow?

Temps were very similar (to the 70268) using the factory cooler in the radiator. Usually around 160, but would get up to 180-190 if very hot outside and driving around town/sitting in traffic.


I don't tow much, and when I do it's usually just a little trailer, with about 500lbs loaded on it. As long as you use overdrive wisely, I never was in a towing situation that caused the temps to spike at all. Again though, I don't really tow much.

 

[Scalded_Dawg]

Stock Radiator Trans cooler void...

Curious:
What are you guys doing then with the stock trans cooler void that is left in the radiator?
It was discussed that the air space creates an in-effecient cooling device. Would this not be creating an air gap in your radiator? ...:noidea:

Also, maybe I'm not seeing some of the stock trans cooler internal piping but it has both in and out tubes on the bottom (on my '95 anyway)... again providing the possibility for empty air space.

 

[JBurt]

I just put a hose from the outlet to the inlet on the stock cooler. That way if the seals fail it won't leak. I don't think the air space makes any significant difference. They are completely separate systems.

I've had it that way for over 2 years and there haven't been any overheating issues and where I live we see triple digit temperatures 7 months a year.

 

[Scalded_Dawg]

I just put a hose from the outlet to the inlet on the stock cooler. That way if the seals fail it won't leak. I don't think the air space makes any significant difference. They are completely separate systems.

I've had it that way for over 2 years and there haven't been any overheating issues and where I live we see triple digit temperatures 7 months a year.[/QUOTE]

Good idea on the connector hose. And ^^^ that was all I needed to know. Thanks!