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General Information => General => Topic started by: rallydiesel on December 21, 2008, 02:54:47 pm

Title: What to use to measure EMP?
Post by: rallydiesel on December 21, 2008, 02:54:47 pm

What type of sender would I use to measure exhaust manifold pressure? I haven't been able to find any senders specifically for this purpose. I can't imagine just any sender would survive in those conditions. I think it would be a good gauge to have if you were experimenting with odd turbo set-ups.

Title: What to use to measure EMP?
Post by: jtanguay on December 21, 2008, 07:03:05 pm

you could look for one off of a big rig... they have gauges for all kinds of things.

Title: What to use to measure EMP?
Post by: zukgod1 on December 22, 2008, 05:04:10 am

Can just use a reg Boost gauge. Use copper line instead of plastic. Coil about 5 or so feet of it then transition to plastic as it enters the cabin.

Title: What to use to measure EMP?
Post by: saurkraut on December 22, 2008, 06:37:46 am

I wonder how long it will work befor it soots up.  Give it a week?

Title: What to use to measure EMP?
Post by: jtanguay on December 22, 2008, 07:04:28 am

Quote from: "saurkraut"

I wonder how long it will work befor it soots up.  Give it a week?

yea... i wonder how the big rig ones don't get clogged up with them being dirty and all... or maybe they do?

Title: What to use to measure EMP?
Post by: foxracer1 on December 22, 2008, 07:12:53 am

I don't think there's enough flow in the line for soot to travel.

Title: What to use to measure EMP?
Post by: zukgod1 on December 22, 2008, 07:37:05 am

And if it did soot up you can just unhook at the plastic/ copper junction and blow through with compressed air.

Title: What to use to measure EMP?
Post by: saurkraut on December 22, 2008, 07:45:51 am

There is indeed significant flow.  I don't know if the pressure gauges we use are bourdon tubes, or aneroid bellows, but that volume has to be filled to make the gauge move.

Bourdon Tube:
(http://upload.wikimedia.org/wikipedia/commons/thumb/f/f8/WPPressGaugeMech.jpg/200px-WPPressGaugeMech.jpg)

Aneroid cell:
(http://members.rennlist.com/pbanders/manifo10.jpg)

My 1.6TD uses very little oil; 1/2 quart in 3,000 miles.  I run allot of boost, 25+ PSI.  The plastic tube that goes from my intake manifold to my boost gauge always traps oil, and oil even get into the gauge it self.  And the fitting thats in my manifold is 90 degrees to the flow, and air has to go virticle to get into the tube.

I can't imagine how much crap will go into that exhaust gauge line, and condense/coke...  Make you want to say Eeeww...

Title: What to use to measure EMP?
Post by: 53 willys on December 22, 2008, 08:48:53 am

here is what I did on my Cummins drive pressure gauge.
(http://i81.photobucket.com/albums/j240/53willys/performax/IMG_0244-1.jpg)

(http://i81.photobucket.com/albums/j240/53willys/performax/IMG_0240.jpg)
here is my set-up...I used a modified "T" to use the same hole as my pyro....electric or mech gauge it should work either way...my VW DP gauge is mech
the one in this pic is electric

1~3 feet SS tubing
2~home depot aluminum rod (drilled out/tapped to fit a 1/8" NPT compression fitting)
3~Brilo pad soot filter :lol:
4~a few 1/8" compression fittings
I have had to change the brilo 1 time since install..it was clogged up with soot.
Isspro engineer told me that for their brand gauges you DO NOT need a filter, I just felt like it could only help the sender last longer so I made my set-up for piece of mind.

Title: What to use to measure EMP?
Post by: 53 willys on December 22, 2008, 08:59:45 am

Quote from: "saurkraut"

I wonder how long it will work befor it soots up.  Give it a week?

my heavy fueled cummins clogged up a filter in about 6 months...the filter was pretty much clogged completely...

Title: What to use to measure EMP?
Post by: rallydiesel on December 22, 2008, 09:59:49 am

Thanks guys!

Title: What to use to measure EMP?
Post by: foxracer1 on December 22, 2008, 04:22:26 pm

What kind of drive pressures vs. boost do you see on your dodge? Do you have the factory turbo on it? Good exhaust?

Title: What to use to measure EMP?
Post by: andy2 on December 23, 2008, 05:51:00 pm

Quote from: "foxracer1"

What kind of drive pressures vs. boost do you see on your dodge? Do you have the factory turbo on it? Good exhaust?

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