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post #1 of (permalink) Old 01-06-2002, 05:45 PM Thread Starter
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Your thoughts on:

Oil pressure gauges, is mechanical better than electrical? Is one more accurate or dependable than the other?

'84 CJ-7, 4.2, 3.5" Lift, 31's, YJ tub, TR upgrade, Moser 1 piece, LED's.
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post #2 of (permalink) Old 01-06-2002, 05:48 PM
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Re: Your thoughts on:

The best ones are mechanical. Period. Look in any NHRA,nascar, ect. Even aircraft use them as much as possible. There are good electrical ones to as well as crappy mechanical ones, but the best of the best are mechanical.

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post #3 of (permalink) Old 01-06-2002, 05:52 PM
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Re: Your thoughts on:

Mechanical by far ! You generally know without a shadow of a doubt what your engine is up to. If you're going aftermarket, the prices are normally about the same for mechanical or electric. I've found most mechanicall run cheaper. There's a simple piece of mind that goes along with a mechanic guage too. I'm sure you will come up with the same 5/6 different manufacturers that most folks like, how deep is your wallet ?

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post #4 of (permalink) Old 01-06-2002, 05:54 PM
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Re: Your thoughts on:

Electrical oil pressure gauges are fine, it's the sending units that suck. Go mechanical.

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post #5 of (permalink) Old 01-06-2002, 06:00 PM
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Re: Your thoughts on:

I like mechanical better than electrical...and I always use copper line...on my jeep I tee'd the line and put in a seven pound presure sender...if the presure drops below seven a big red light comes on on my dash...I once knocked a hole in an oil filter and lost the oil never saw the presure drop till the rods knocked then it was to can't go wrong with stewart warner gauges

post #6 of (permalink) Old 01-06-2002, 06:22 PM
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Re: Your thoughts on:

If you absoloutly, beyond the shadow of a doubt, need to kow EXACTLY what temp/pressure you are reading, then go mechanical. And as stated above, only use copper line. The vinyl line that comes with the gauges is crap and will break when it gets too hot/cold/rubbin' up against something! For a daily driver/mostly street vehicle though, I like a good quality electric gauge. No mess in the interior if a line does leak at a fitting (and it will), and I'm really not concerned if I have 65 or 67 psi of oil pressure. IMHO you can not buy a better gauge, mechanical or electric, than Auto Meter.

Mike H.
1983 CJ-7 Laredo
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post #7 of (permalink) Old 01-06-2002, 08:47 PM
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Re: Your thoughts on:

There are pros and cons both ways. The mechanical is more accurate, but can also be dangerous if that line blows out. Personally, I won't use them because I know someone who killed an engine when the line blow off on the interstate and emptied the crankcase at 70MPH. This was on a car, the risk is a lot greater on a jeep because of the vibration.
The problem with electric is the sending units tend to go bad and give inaccurate reading or stop working all together.
My vote is for electric, but if you do get an electric, don't buy junk, get a good name brand like Stewart Warner or VDO.
If you use mechanical, stay away from the plastic line and use copper.

-Derek Schwab
'97 Sidekick Sport
'83 CJ-7
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