I know that people like putting large tranny coolers if they put one on. But the more fluid you need to cool(increased volume) the less line pressure you have. This means fluid is moving through slower, and so could take longer to cool the fluid in the transmission. What do you think? But then the increased surface area of the cooler helps it cool faster. What do yall think?

 

Where did you get the idea that line pressure and fluid volume in the system are related?

 

It's only going to decrease if you do not put more fluid in. If you fill the tranny to the correct level after adding a cooler the pressure will be relatively the same, you may lose 1 or 2 psi given the size of the cooler.

You really don't need a cooler if you aren't towing anything and don't have a VB mod. The tranny needs to operate at a certain temperature and it has been designed that way for stock. However you need a tranny cooler with a VB mod because the VB mod increases the temperature of the tranny significantly.

 

you know, I was thinking that because there was more fluid to move, and more area to move it through that it would affect the line pressure, but considering how much fluid is in a system, and the difference, I don't think it would make much. Thanks for the thoughts.

Now I am planning on towing a 2000 lb trailer from san antonio to Atlanta. (atlanta here I come) I'm thinking about installing a atf cooler and a temperature gauge. I haven't done so yet.

Does anybody know which atf line for the cooler is leaving the transmission and which one is going back into the transmission? One has a banjo bolt(lower one) and the other one is just a line.

 

Perhaps this would help? An under-utilized part of maxima.org:
https://maxima.org/shoptalk/sub_modi...er/index.shtml

 

I have one on my 88 maxima. I have a Hayden 404. SMX here on the org in Atlanta helped me install it about 4 years ago. Tranny perfectly fine! They take about 30 to 45 minutes to install and cost about 30-35 bucks. Smaller sizes maybe less than that though.

 

The line with the Banjo bolt is the outgoing line.

 

Another thing you might want to consider, IMO, would be where you live. I mean, it'd make little sense to put one on if you're in a part of the nation that has predominantly cooler weather.

 

Well I'm going to be towing a trailer which is why I want this cooler. I really want to install a inline atf temperature gauge with a t-fitting to make sure my tranny temp is ok. I went to autozone and all of theirs install directly into atf pan. I know that the t-fitting could be done, but do not know if I have to custom make it. I could just install the tranny cooler for just the tow and take it off if I'm not towing. I'll be towing from san antonio to atlanta

 

Well, I live in Texas now since late 2000. You might as well keep it on. In Central Texas it gets hella hot!!

 

I have one because I drive my Max kind of hard and it gets hot here (MA) in the Summer.

 

Does anybody know the size of the lines for the outgoing line and in the in going line? I'm wondering because I'm trying to figure out the size of the t-fittings that I need for in-line temperature gauge.

 

i totally bypassed the stock cooler but im using the B&M with bypass valve. 130k miles and still shifts good. Its only been on for about 40k so far. Winter time it feels a little harsh but once it starts warming up it feels great