<VV> Oil Pressure Gauge
Sethracer at aol.com
Sethracer at aol.com
Sat Oct 22 01:11:19 EDT 2005
In a message dated 10/21/2005 9:17:52 AM Pacific Standard Time,
tampatexan at earthlink.net writes:
What are the pros and cons of using a mechanical oil pressure gauge with
the necessary 15 foot oil pressure line?? Electric gauge isn't much
more expensive, but I already have a mechanical gauge... comments??
Jim Houston
'65 Monza Coupe
If it is a street car, I suggest going to a nice electric gauge. On a race
car, you have other options. I ran a 1/4" tubing from an oil cooler line in the
front, directly to the gauge. In reality, you will only have the oil in the
whole line if you do have a leak. The pressure will compress some of the air
in the line and the oil will move some of the way up, but not too far. The
most important thing about installing an electric oil pressure gauge is the
manner and location of the mounting of the sending unit. Remember, the stock
pressure switch "feed" is located "inside" the fan belt. You will need to mount
the sender in a location safe from fan belt attack (this holds true for the
tubing as well, if you run a mechanical gauge.) I have seen a nice, short
tube from the motor to the frame rail, where the sender was mounted. Don't use
hard tubing for this run, the movement of the motor could eventually crack it.
If you run plastic tubing to the sender, be sure to ground the body of the
sender, simulating the mounting into the oil filter adapter. If the body is not
grounded, you will have erroneous readings. If you count on the threads to
be the ground, don't use teflon tape. Oh, be sure to install the original
pressure switch, or an equivalent replacement. Don't rely on seeing the gauge.
You still need the warning/idiot light! One other note on the mechanical
gauge. Feeding a couple of wires through the underside passages of the Corvair
is a lot easier than feeding a piece of tubing. - Seth Emerson
More information about the VirtualVairs
mailing list