Gentleman,

I am looking to get a fuel pressure gauge and a Transmission temp gauge. Do I want Mechanical or Electrical?

Thanks in advance,

David

 

electric you dont want fluids in the cab

 

Thank you Nocal Brother!!

 

Mechanical. For the fuel pressure you mount the isolater (fuel runs to this) on the firewall then you run a small oil pressure line into the cab. You fill the line with silcone spray so thers no fuel in the drivers compartment. Mechanical are much more accurate. For the trans you have to have an electrical wire.

 

Whatever floats your boat. I like mechanical gauges because the wide sweep is easier to read.

 

Like Dave said, mechanical gauges have a 270* sweep; whereas, electricals are limited to only a 90* sweep.

I much prefer mechanical gauges; the factory gauges are electrical and no one really trusts them; why should they trust another electrical gauge any more than the factory ones??

 

My Isspro EVs have a full sweep to them.and I have checked them against mechanicals and see no differance at all the temps read the same

 

Part of the attraction to first gens in my opinion is the fact that they are almost 100% mechanical in operation. When you start throwing electrical components on them it kind of ruins the "old school" factor. Just my 2 cents

 

I have heard that isolators are a pain, and are really sensitive. I have heard they are easy to break too. I am going with an electric one if that helps at all.

 

I'd just run mech. I don't really care if diesel is in a tube in the cab to be honest. Not a big deal if it leaks imo, it's not volatile like gasoline is. I'd never run gas into the cab.

 

You can get most of the better name electric gauges with a 270* full sweep or in a traditional 90* with an air core movement.

The 270* full sweep use a microprocessor and a stepper motor to drive the pointer instead of a traditional air core movement which drives the 90* style.

http://www.autometer.com/cat_gaugeop.aspx?sid=61

I like mechanical temperature gauges because you can monitor heat soak temperatures that occur after the engine is shut down however they are a pain to install with the attached sensing bulb,
I also like electric gauges because you can monitor more that one heat source with additional senders and a switch.

I once had to replace a mechanical temperature gauge on a transit coach; the coiled probe was 50’ long.

Also I haven’t seen these for Autometers but I used to only run Stuart Warners and they used to have a small pointer that clipped over the bezel and you could set them at your target points on the dial, this was easy to see at a glance as the pointer approached the set point.

In racecars they will orient the gauge with the target number at 12:00 o clock position, easier to read when the pointer is straight up.

Jim

 

I always install gauges that way. That way I can just glance at them and if they are straight up they are OK.

 

Me too, mostly; but, with about twenty of them looking back at me, one or two may have escaped such treatment.