I'm doing the VB upgrade and want to do the cooler at the same time.

Jim

Jim...
 

Transmission Cooler
carparts.com:
B&M Supercooler Type #130-70264 (#70264 in carparts.com database)
19,000 GVW 11 x 7.5 x 0.75" $40
Will need 4 feet of 3/8" hose
Hayden:
#403 $40

AutoZone carries Hayden coolers


And, Jim, please get the B&M model. It's received much better reviews over the Hayden. Seems to be of better quality. I'll try to see if someone local carries those things as well.


I smell another sticky coming up in the near future....:)

Hmmm...now I'm not sure which one to buy. I haven't read any postings that say B&Ms are better. I've seen the B&M cooler at a speed shop and its chunkier than the Hayden model. Is installation and mounting any easier than the Hayden? As space is limited in front of the radiator wouldn't the Hayden fit better? Thanks for your opinions!

Ugh....
 

people....please use the search feature......it's there for your benefit.

Here's a good topic explaining this:

http://forums.maxima.org/showthread....ler#post240191

Here is
 

the search results I did for "supercooler". brubenstein and others have good info in many posts.

http://forums.maxima.org/search.php?...der=descending

And Greg's excellent write-up:

http://www.greghome.com/Greg's%20Gar...n%20Cooler.htm

I will make a sticky post within the week.

Re: Ugh....
 

I was under the impression that the search utility was not yet up to snuff. Has this been fixed? Maybe I missed the post that said so. Thanks for the info Bill!

Jim

Thanks for the links, guys!
I'm picking up a B&M tonight!

Yeah guys
 

search has been working for about a week now, at least for me. Come to think of it, there wasn't an announcement that I'm aware of.

Good luck with the new tranny, Jim!

Are you going synthetic fluid as well?

Re: Yeah guys
 

I'm going to get a case of something when I get the cooler, hose, gaskets, etc. for the VB upgrade. What do you recommend?

Jim

Not sure.....
 

I would get Amsoil ATF or Redline D4 ATF. Don't know if one is better than other as I am still in initial driving period with Amsoil.

If you would like to Paypal me some funds, I'll order Amsoil and have it sent to you since I'm a preferred customer and get Amsoil for a dab cheaper (for JJW95SC only; please NO other inquiries). Do you just need 12 quarts?

As far as a cooler is concerned, the bigger the better. I think the Haydne 404 or 405 is the biggest one you can get in the space in front of the AC core and radiator.

I'm not sure about B&M, I'm sure it works but I don't know if the name B&M lowers the temps any better than another piece of aluminum tube with fins on it :)

Most parts stores carry the Hayden (or similar)

I recommend Redline D4 ATF, but I usually tell my VB customers to use cheapy stuff installing the VB, then make sure its all ok (so you don't have to drain $100 worth of fluid in 20 minutes), then re-fill with synthetic after its all running good.

The best time to drain and re-fill is after its been sitting ALL night, most of the fluid will have dropped to the pan overnight.

Don

A good explanation
 

of the difference between B&M and Hayden:

*************************
Originally posted by brubenstein
First of all, the stock setup does not have a cooler in the radiator; it is a heat exchanger. While the car is warming up, passing the transmission fluid through it warms it up. This is done to get the transmission fluid up to its proper operating temperature and viscosity. The transmission has its own temp sensor and won't do things like lock up the torque converter until the temperature reaches 176 F.
On a hot day, with the engine at its equalibrium point of 195 F, the radiator is too hot to cool the fluid much at all. It's under these conditions where a real cooler is needed, so the temp can be dropped 30-40 degrees.
Now when a real cooler is put in (in series, after the radiator) it will take longer for the fluid to heat up. There are two good solutions to this: synthetic ATF and B&M cooler. The synthetic ATF doesn't increase its viscosity as much as regular ATF when it's cold. The B&M cooler has a termostatic feature to internally bypass the cooling section when the fluid is thick (cold). The B&M cooler is also a more efficent design than the Hayden "fin and tube design". If you live in the norther part of the country, I would get the 5 3/4" x11" one, and the 7" x 11" one for warm areas.
Using a cooler and synthetic ATF (replaced every 30k miles) can double the life of the transmission.
*************************

Two things about the B&M that I like are:
1. Sheet metal around the perimeter to protect the fins.
2. Plenty of hose in the kit. It's not easy to find hose for the a/t. The only thing auto parts stores carry now is fuel line.

Question sinewave....
 

How much hose comes with the B&M kit?

The coolers are different types. The B&M is not a fin and tube type; it is a a stacked plate construction (similar to a radiator). The B&N is 30% more efficent, for a given size, than a fin & tube one. Hayden sells both types, BTW.
The size of the cooler has to take into account local weather, because fluid temps below normal operating range can be an issue. Some of the racing, synthetic ATF has a higher viscosity, and probably isn't appropriate for northern climates in the winter.

403 seems fragile, bugs hurt the fins :D

hmmmmm...
so for some people that get cold weather for some parts of the year they should get a smaller cooler???
what could happen if it cools to much?????
since i live in an area that has bad winters should i stay away from synthetic atf?

I picked up the B&M model #7255 for $72.00 Cdn last night. It comes with 4 ft of hose and the mounting hardware, clamps, etc. I was a bit surprised at the size of the cooler but its made for 13,000 to 16,000 gvw types. It certainly looks of pretty solid construction compared to the Hayden.

Re: Question sinewave....
 

It's been a couple of years since I installed it, so I couldn't tell you. I did mount mine pretty high on the radiator and still had plenty of hose left over.

I helped a friend install a Hayden on his Maxima a couple of months ago. We mounted it in the vertical position, with the taps down, so we wouldn't have to purchase more hose.

I think my tranny cooler is too big ->
 

My tranny temp never reach over 180F. It's between 150F-165F during the summer and never reach over 150 during winter. I guess the torque convertor never locks up. This probably hurts my gas mileage. Maybe I will switch it out for the B&M since it has the bypass function when the fluid is cold. I had Redline D4 ATF in it for the past 23K miles, but just recently flushed it out for Mobil 1.

I live in NY so I installed the B&M 70255 (5 3/4" x 11"), which is smaller than the other common one (7" x 11"). Synthetic ATF (Mobil 1) is better in cold climates, because it doesn't thicken the way conventional ATF does at low temp. The only downside to the cooler (now) in cold weather is that it takes longer for the fluid to reach 120F (50C), which is the minium temp needed for OD to engage.

Re: I think my tranny cooler is too big ->
 

Has this been confirmed? I wonder which models have it? I didn't think it was an issue at the time I bought mine since I live in New Orleans, so I didn't pay attention to the box.

On the B&M box as well as the B&M brochure there's no mention of a thermostat-type device on the supercooler. It says instead that overcooling is prevented by the viscosity of the tranny oil when cold. The inlets prevent thick oil from entering the cooler until it is warmed up to the right temperature. Check www.B&Mracing.com for more details.

Sorry...that should have been www.BMRacing.com

Question for you, Brubenstein...
 

Did you mount your B&M vertically as in the attached photo with the hose attachements up or do you have it upside down? I'm just wondering which is the proper method or if there is a proper method. Thanks!

Here's the info from the B&M website on the Supercooler:

"B&M's SuperCooler low pressure drop coolers reduce the risk of lube system failure. A controlled amount of ATF is allowed to bypass the stacked plate core, passing through a self-regulating orifice which monitors resistance to flow. Controlled by viscosity, the thicker ATF is returned directly to lube through two open bypass openings in the stacked plate core. As operating temperatures increase, more of the ATF flow is directed through the core. Resulting in a highly efficient cooling technology that combines improved protection against lube system failure with the required levels of optimal heat transfer."

Re: Question for you, Brubenstein...
 

I mounted it fittings up. I don't think orientation makes any difference.
BTW, the nominial operating fluid temp range is 50 - 80 C (122 - 176 F).

Where in N.Y. are you????
the cooler can be bought for 40.00 where???

Brubenstein, what year Maxima do you have?

Jim

1990 GXE