Picked up a 2 5/8 trans temp gauge. Just wondering where I should connect the temp sensor? Right to the tranni (700r4) or on the line out of the tranni going to the trans. cooler or elsewhere?

Thanks all!
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I recommend installing it in the pan. If you install a drain plug kit, most senders use the same threads, and you can kill two birds with one stone.

I have a B&M deep chrome pan, you think I can adapt to that? It does have a drain plug on the bottom.

Clearance do the ground raises a flag of concern to me.

Any thoughts?

Mine is located in the drain plug hole but it's on the side of the pan. The head on the sending unit I have isn't much larger than a male plug and had need be I would have put it on the bottom without concern. I guess that deep pan would make a difference. Maybe a new hole like BPOS suggest in the side of the pan.

[ 04-01-2003, 01:26 PM: Message edited by: rojo ]

I'd go into the pan. Add a drain plug and sender bung to it, that way you dont screw up the sender from using it as a drain plug. I'd insatll the drain on the back corner....so if you jack-up the car to do an oil change or what not, it will be at a better place for it. I wouldnt put it on the bottom either as stated by the others.

[ 04-01-2003, 04:38 PM: Message edited by: chicane67 ]

The pan sounds like the logical place to put it, that's where I'd want to know the temperature. hmmm...although the bottom of the pan, as stated, causes some concerns... :rolleyes:

I'd add a drainplug kit to the side...the kits are cheap. I wouldn't want the sender hanging straight down. If one is good, then two is twice as good!

The temperature on the out-bound cooling line should also be representative of the internal temperature. Pessurization will heat the fluid and converter heating are the biggest heat sources and will contribute to a higher reading than what's in the pan. The exception being the instant between gear changes where frictional heating is high.

I don't have any particular objections to pan sensing, but the cooler line is also a reasonable choice. I'm playing devil's advocate. It's a lot like the thread that goes "where should I install my temp sensor (in the block)". Different locations will give different results. The important thing is, as the operator, you known what the guage is telling you.

-dnult

If you really want to be scared, use an infrared temp gun on a 7" race converter at the top end right after a run.....LOL. The fluid will be very hot in the converter, this is a moot point, and a good reason to use synthetic, I saw a 20-25 degree drop in temps in the pan with Mobil 1 in a 'Glide behind a 1200+ HP motor, with NO cooler (did not want lines out there to ever fail, they were between my legs in the car!). Thus, the real number I want to see is the temp in the pan, since this is the fluid being pulled into the pump and sent to the tranny. Temp will still drop even after the fluid has returned to the pan, I have tested this myself to see so, thus the temp reading at the cooler line is not an accurate picture of what the trans really sees. smile.gif