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best spot to tee in an oil pressure gauge
by
92EcoDiesel Jetta
on 30 Jun, 2009 10:14
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Where's the best spot to tee in an oil pressure gauge on my car? Thanks!
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#1
by
arb
on 30 Jun, 2009 10:30
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My preferance is not to Tee at all - the oil pressure at the head is subject to a crank bearing's slot - on half the bearing only.... so, I put my tap on the filter flange.
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#2
by
Rabbit on Roids
on 30 Jun, 2009 10:43
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what the hell does it matter where you get the oil pressure reading from? the turbo still takes lots of oil, and those squirters dont exactly use a teaspoon of oil either. both things are absolutely oil hungry. it doesnt really matter in my oppinion where you take a reading from. no gauges are absolutely accurate. and there are soo many variations in oil pressure too. thickness, condition of your oil galleys and passages, weather your oil pump is in good shape or not, weather your bearings are good. all ive ever used my oil pressure gauge for was just to see that my engine had some ammount of oil pressure.
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#3
by
92EcoDiesel Jetta
on 30 Jun, 2009 10:43
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I have the stock oil cooler with coolant heat exhanger. Do you mean use the connection for the idiot light sender on the oil filter flange for the pressure gauge? What kinf of fitting is it? flare? NPT?
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#4
by
arb
on 30 Jun, 2009 11:31
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I have the stock oil cooler with coolant heat exhanger. Do you mean use the connection for the idiot light sender on the oil filter flange for the pressure gauge? What kinf of fitting is it? flare? NPT?
Yes, that's what I mean and did. Its NPT. I do agree with Rabbit on Roids that we have non-calibrated gauges and in the end any gauge location will tell you if you have healthy oil pressure.
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#5
by
zukgod1
on 30 Jun, 2009 15:36
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It's supposed to be on the filter flange.
I however put mine on the head. That's the end of the oil flow so if you have good pressure up there rest assured all the places before it are good to go.
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#6
by
92EcoDiesel Jetta
on 30 Jun, 2009 16:14
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Is the circled item on the head an oil pressure sender? If so, is that a good spot for the oil pressure gauge?
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#7
by
92EcoDiesel Jetta
on 30 Jun, 2009 18:01
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Thanks Andrew! Would you know the thread size? I'd like to put a Tee there and keep the sender plumbed in.
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#8
by
Rabbit TD
on 30 Jun, 2009 18:15
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Thanks Andrew! Would you know the thread size? I'd like to put a Tee there and keep the sender plumbed in.
I once put an oil pressure sender on an aircooled type 3 with a Tee for the light but the sender was one of the electric Ford types which were pretty big. One day going about 65 on the highway the tee broke {from vibration from the big sender I suspect} and it blew out so much oil at once and got down in the heat exchangers and blew so much white smoke up through the defrosters I actualy had to stick my head out the window to see to get off the road. I was in the fast lane and just passed a semi and I bet he thought, "Damn, look at this maniac and his car is on fire too"
I think a Tee is fine though for these senders we use though and a manual pressure gauge, {non electric type}
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#9
by
flapjack
on 30 Jun, 2009 19:06
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If you connect at the head, what pressure is considered healthy for a turbo engine?
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#10
by
Vincent Waldon
on 30 Jun, 2009 19:07
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Thanks Andrew! Would you know the thread size? I'd like to put a Tee there and keep the sender plumbed in.
M10 x 1... VDO dealers sell them, among others.
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#11
by
Rabbit on Roids
on 01 Jul, 2009 07:53
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so 7-10 psi at idle is nothing to worry about then, right?
and ive got 10w30 in there for temporary, so it goes up a little with 15w40
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#12
by
92EcoDiesel Jetta
on 01 Jul, 2009 13:17
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#13
by
92EcoDiesel Jetta
on 01 Jul, 2009 13:25
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#14
by
92EcoDiesel Jetta
on 01 Jul, 2009 13:54
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The m10 x 1 thread is almost exactly the same size as 1/8NPT except it is straight instead of tapered. I don't like to thread 1/8NPT directly into the head as it will damage the threads in the head slightly, but any local auto parts store should have a metric conversion kit for gauges. It will include an adapter that goes from 1/8NPT to m10 x 1. Then go to the hardware store and get a 1/8NPT brass tee and a 1/8NPT nipple. The metric to NPT adapter goes into the head and the nipple threads into it and one of the legs of the tee. Whatever fitting you are using to go to the gauge goes into the next leg and the stock sender can screw right into the third leg of the tee. There's no need for an adapter for the sender. The threads are close enough and who cares if you muck up the threads of the sender or tee? I like to use locktight high-heat thread sealant (white paste). Be sure to think about how you are assembling it and the various clearances for the two senders.
Yeah I pulled the sender out yesterday to have a look and I said to myself it sure looks close to 1/8 NPT!. I searched Autozone for "metric conversion kit for gauges" and variations of it but did not find any. I'll try NAPA next.
