NX Tacoma

I asked where I can get a Hayden 1678 tran's cooler, but when I saw the 1679 I bought it. Is it too much or just right for my tacoma with 125 shot of nitrous?

Thanks'
NX Tacoma
:pat:

MTL_4runner

If you are putiing nitrous on they bad boy be sure to do the valve body upgrade or you will smoke that tranny of yours, cooler or not. Also make sure todo ome hefty fuel upgrades (I suggest installing the URD upgrade kit to make sure you don't turn your engine into a cutting torch.

midiwall

_WOW_ that must be fun to drive!

You can't get "too much" of a tranny cooler for the truck. Sucking heat out of the transmission isn't like sucking heat out of an engine. You can get an engine too cold, but short of dunking a tranny in liquid nitrogen, it's not going to be a problem.

For reference, tranny coolers are rated by the load on the transmission, expressed in gross vehicle weight. So, referencing:

http://www.bulkpart.com/cgi-bin/miva...egory_Code=HCS

The 1678 is rated for trucks to 24,000 lbs, while the 1679 is rated to 30,000lbs.

The added load of a 125 shot should of course be factored in as additional stress on the tranny. But since you're not running it all the time, the cooler is only there to cool things down _after_ the WOT run, not really during.

Is this an auto? If so, then one thing you should do (if you haven't already) is to do a valve body upgrade. That's going to be more help in keeping the tranny together.

Transdude

A 1679 should work fine if you have the room to fit it.

I'm also going to agree that you will hurt the transmission if you don't do anything with the valve body.

-John

okie81

Old thread, but I just wanted to confirm that the Hayden 1679 will fit into a
3rd gen. It's a little tight, but nothing complicated.