TRANS TEMP GUAGE - Team Camaro Tech
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post #1 of 10 (permalink) Old May 27th, 00, 12:29 PM Thread Starter
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Drake
 
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Anyone running a transmission temp. guage?ATI says it would be a good idea so I can keep an eye on it with my new converter(over 3000rpm stall).I want to,if possible mount it somewhere stealth,I'm thinking maybe in the counsole?I heard you can mount the sending unit in the outgoing cooler line,or tap a sensor into the pan.Anyone done this?Any ideas welcome!Thanks,Drake

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post #2 of 10 (permalink) Old May 27th, 00, 02:28 PM
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I have a trans temp guage in my 700R4. It came with a fitting in the pan but it was too small for the guage I got. I took it to a local welding place and they put a bigger fitting in for me for cheap. I think a guage is a lot cheaper than a new trans.
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post #3 of 10 (permalink) Old May 27th, 00, 03:17 PM
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I rigged up a tiny toggle switch on my console temp guage and added a second sender on my diff. I was worried about the temp on it. It works fine. The only trouble is the console guage on my 67 has no numbers on it!
David

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post #4 of 10 (permalink) Old May 28th, 00, 04:55 AM
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I did the same thing as DavidPozzi when I installed an Autometer temp gauge (along with other gauges).

When I purchased the gauge, I just ordered an extra sending unit. With the sending unit are several brass adapters. I took one and ground it down so that there was a shoulder on it. I then soldered it in the pan.

Make REAL sure that there is room for the sending unit inside the pan and also that the sending unit will not hit the exhaust or shifter.

This was done on a TH350.

As a bonus, this also serves the function as a drain for the trans.

One other thing that I did was wire up a "indicator" led so that I could remember that I was looking at the trans temp. Just use a "double pole" switch.

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post #5 of 10 (permalink) Old May 28th, 00, 05:52 AM Thread Starter
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Drake
 
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Interesting ideas guys.So is the sending unit the same or similar for the water temp and trans?Otherwise wouldn't you have to recalibrate the guage to read on two different scales?If I remember right ATI did say not to let trans temp get over 220deg,so I would think both units should be on a close scale.If I did use the stock temp. guage in the factory cluster,I have the same problem because it's also a 67' with a 350.Thanks for the ideas!

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post #6 of 10 (permalink) Old May 28th, 00, 09:35 AM
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David Pozzi
 
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I used a replacement gm water temp sender, the same as is in the engine. I'd allways thought of getting numbers printed on my console temp gage.
You could also get a warning light sender and install a small led hooked to it. The warning light senders are just a temp switch that connects to ground. Run from hot to the led to the sender, which is grounded. I'd look at the 80's type small temp switch used for cooling fans.
I'd do some investagating on what trans temp is max.
The trans usually is cooled by the engine coolant which can get to 220 degrees at times.
David

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post #7 of 10 (permalink) Old May 28th, 00, 05:31 PM Thread Starter
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Drake
 
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Thanks for the info.I have the temp.info around here somewhere ,it came with the torque converter.BTW I run the trans. fluid through a huge cooler after it goes through the stock one.

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post #8 of 10 (permalink) Old May 29th, 00, 05:21 AM
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67drake;

Yes, the sending unit HAS to match the gauge unit!

If you look at the autometer catalog, I think that the transmission gauge that they sell goes to something like 250. Just order the engine temp gauge that goes to the same range.

One word of caution! I ordered autometer's phantom gauges and the extra sending unit through PAW (we had to call autometer in order to get everything straight, we thought) about 3 years ago. At around that time, they changed the sending units that they were using. It ended up that I got the wrong "extra" sending unit. When I found out about the problem and contacted them, they promptly sent me out the correct one without any problems, questions, or cost. If you look at the color of the insulation on the sending units, they should match! If it doesn't, it may be one of the older sending units that was sitting on a shelf.

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post #9 of 10 (permalink) Old May 29th, 00, 05:39 PM Thread Starter
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Thanks for the tip.

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post #10 of 10 (permalink) Old May 29th, 00, 05:52 PM
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67Drake,

The ideal Trans fluid temp is a constant 185-190 degrees. This is ESPECIALLY important on the R700's. They are the LEAST resistant to high temperature. You can quickly tell if you T.V. cable is not working properly by keeping an eye on the temp. You can absolutely cook a R700 in a VERY short time if the cable is mis-adjusted.

I would suggest putting the trans temp gauge in the glove box. Vintage Air has a plastic glove box that replaces the original paper one and makes for a good mounting spot for the gauge. You can use a small sheet of sheet metal and attch it to the plastic glove box. In my glove box I have a Nitrous arming switch, a NOS botte heater switch, A remote Nitrous activation switch, a Nitrous gauge, and a purge Valve switch and I have room for more!!!
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