mechanical temp gauge, where is best place to splice in?

[devon.818]

so i picked up a mech. temp gauge for my m50 since the brown top connector didn't work and leads to me to believe the wiring is F'd up.

i want to know where the best spot for the temp gauge's probe to go would be...are there any smally sections of hose i could tap into? then i could get a plumbing T and use nipples/clamps for a secure hold.

[devon.818]

Que?

[Philo]

A reading from directly in the head (stock location) is the most desirable. If you have to use a hose splice, the coolant pipe for the throttle body would be a good place to use.

[nando]

I'm not sure how exactly you think a "mechanical" temperature gauge works..

[///eDirty]

I'm using a mech temp gauge as well on my s50 project. Just use the stock location on the head, on the intake side twards the front. It's a tight fit, but you wolnt have to take anything apart to reach it. Theres two ports, 1=gauge, 1= ecu. I think the front one is for the gauge. Btw I know any sunpro universal temp gauge comes with a fitting that works. Edirty..

[nando]

guys. there's no such thing as a "mechanical" temp gauge. unless you're using a mercury based thermometer, or a metal coil that expands with temp... it's electronic.

[trackjunkie21]

guys. there's no such thing as a "mechanical" temp gauge. unless you're using a mercury based thermometer, or a metal coil that expands with temp... it's electronic.

This do you mean analog? And why do you need another temp gauge? does yours not work? Tighten the nut on the back.

[///eDirty]

Yea they a long hollow brass hose, gauge on one end and sensor on the other. No power required. my wiring was f' d up and the only thing keeping me from driving was that daym gauge. I happened to have a mechanical gauge laying around from a sbc project. I used it, it worked just fine... Still using it. Idk it says mechanical gauge on the box. You can get em at autozone for like 15 bucks

[nando]

there's no way that's going to be accurate with ~4ft of brass tubing radiating heat all the way to the gauge.

I'd rather fix the damn wiring. it's literally 1 wire.

[LJ851]

there's no way that's going to be accurate with ~4ft of brass tubing radiating heat all the way to the gauge.

I'd rather fix the damn wiring. it's literally 1 wire.

The gauge is calibrated to include the tubing, silly. A non electric temp gauge can be as accurate as an electrical one.

[nando]

sorry but with changing ambient conditions, engine heat radiating, airflow through the engine bay - there's no way it's going to be more accurate than a simple electric gauge.

[///eDirty]

your probly right I'd imagine its not as accurate as an electronic gauge. It has like a steal coil that wraps around it to keep it from directly touching anything tho. idk it works fine for me, only complaint I have is knowing just how hot an engine gets after you shut it off

[MattM]

i dont see the point, the normal temp gauge is ONE wire... i could make a 'harness' for it in about 15 seconds...... lol...

[trackjunkie21]

Don't understand why you have to complicate everything.