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RE: [T3] Oil pressure/temperature installation


On 23 Aug 2006 at 21:05, Keith Park wrote:

> First off, use Brass elbows as they will transmit heat to the temp sensor
> much better than cast iron, you need 2 elbows with the temp sensor and
> second elbow in the first, then the idiot light sender and pressure line in
> the second.  I don't trust the accuracy of the electonic oil pressure gauges
> so I use a mechanical one and an oil line but you cant use the littl one
> that comes with the gauge as its too long for the thick oil to get quick
> response.  I use a copper line instead, I think its 1/4", copper is a must
> where it goes into the engine as the plastic will die from heat in a year or
> 2.

The response time will bo fine as long as you bleed the air out of 
the line. Plastic line certainly has some potential problems, but 
copper will also work harden and break, AND it will short out the 
starter if you run it by there. (Had a friend who did that.)

The down side of all of this is that none of the affordable gauges, 
either mechanical or electric, are very accurate and most of this 
extra gauge stuff is just for show anyway. You're really better off 
just learning to listen to your engine and developing an 
understanding of what's good for it and what's bad for it. Keep in 
mind that temps and pressures are just data unless you know what's 
really important. That kind of understanding doesn't come 
automatically when you install a gauge.  

It's just too easy to confuse data with understanding.

I put an oil pressure gauge on my first square. It was cool at first, 
then I got bored with it. After the line kinked, broke, and leaked 
about a quart of engine oil out around the battery, I took it out and 
never put it back in.

YMMV.

-- 
*******************************
Jim Adney, jadney@vwtype3.org
Madison, Wisconsin, USA
*******************************

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