Engine Temperature when gauges don't work

[foothilltom 33]

Howdy gents, I'm in something of a pickle here.

 

I'm having some electrical issues to my instrument cluster and cannot trust my engine temp gauge at this point. Yet, I'd really like to let the motor run to dial in the carb, test for vacuum leaks, timing, etc.

 

Is there some kind of external sensor I can directly attach to give me an idea if my motor is going super-nova? Or, is there some "home remedy" for knowing when your motor is running hot other than it bursting into flames? I've run the motor for about 30 seconds now and again, but I'm hesitant to let it go too long w/out some sense of engine temp.

 

Thanks in advance!

 

Tom

[6T9Mach1 12]

Just buy a $20 mechanical gauge at Autozone and hook it up while your tuning your carb if that is all you want it for. I installed one in my car because my stock one stopped working; I mounted it under the dash, below the ignition. There is a bolt there that this attached to a brace that is perfect for mounting a single gauge...best part is most people dont even notice it because it is so low. Now I know exactly what temp I'm running.

[coz 108]

I don't really trust my sweep gauge so I bought something similar to this... But much less costly. I think I paid $20.

 

http://www.tunerzine.com/view_news/news_general/mishimotos-new-radiator-caps-with-temp-gauge

 

good because you can see it as you work in the engine bay.

[foothilltom 33]

Thanks guys! I'll go get one of these ASAP. Once again, I am in your debt.

 

TD