I installed my auto meter mechanical gage to the front of the engine by the oil pump. Is this the correct way? I was reading an article that said i should put it in the rear of the motor because the oil pressure is different at the back of the engine. Is this true and if it is My motor idles at 20PSI i wonder what it has at the #5 saddle? Also is it normal for the gage to take about 3 seconds before it reads pressure? thanks
Its more accurate to take the pressure off the back of the block, but you have to tap a new hole to put you line. I think most of the people with drivers run it from the stock location, I do......HERE is an article on how to do it :TU:
Andy's right, only people that race or are worried about the durability go through the trouble of putting it in the rear, I have mine in the front too. It should take a little whiles before it reads pressure, mine takes about 1-2 seconds when the engine is warm or when its warm out, when its real cold it takes what feels like 10 seconds to even start moving.
10-12 psi difference in pressure from a front mounted gauge to a rear mounted one.I run off the rear in the race cars. gary
Well, no tapping needed... If you install the 2nd method using a 90* elbow, that is where I put mine, easy. :bglasses:
Most guys mount it at the front. The ultimate is to have 2 gauges, one mounted at the front, one at the rear. If you know the normal readings for your engine, you can really see a problem coming should the numbers change. The pressure difference, between front and rear can be as little as 4-5 psi, or as much as 12 psi or more, depending on bearing clearances and such. Putting a gauge inthe rear rquires removing the transmission and flywheel. The article describes what needs to be done. It is normal to see a delay on a mechanical gauge. I have one on my 98 Riv, with the SC3800. They use an updated oil pump on the 3800's that is excellent. I have 37 psi at a 600 RPM idle, in gear, hot with 5W/30 Synthetic. 60 psi going down the road at anything above 1000 RPM. The other morning it was 5*, it took a good 30 seconds for the gauge to move up to it's normal 70 psi cold reading.
I run two gauges off the back of the motor, one passenger side and one driver's side. I also run an auxiliary oil line from the front sending unit location to the rear passenger's side so as to equalize the pressure in the main oil galley. I wish I had borrowed a camara when I was doing it so I could share pictures...but, alas I did not. ou: :grin: :TU:
There is a small orifice at the back of most oil pressure gauges that acts as a dampner. You can enlarge (drill) it larger to quicken the response time and 'see' the oil pressure much sooner.
