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  #1  
Old 11-03-2021, 09:38 AM
jneves's Avatar
jneves jneves is offline
 
Join Date: Aug 2021
Location: Livermore, CA
Posts: 62
Default JPI 350 - Using a VDO Oil Pressure Sender Instead

Randomly thought I'd ask the knowledge base on VAF.

I recently purchased a JPI EDM-350 with full capabilities, but only added RPM sensor to the 4 CHT and EGT probes that come with it. This gets me the wire harness for CHT/EGT as well as the one for RPM, MAP, and Oil pressure. I would not mind bringing over MAP and Oil-P to the EDM, but would rather not spend $270 for the JPI Oil-Pressure sensor.

My current Oil-P is taken on a 20 year old mechanical gauge that is fed from an off the shelf VDO sender (the $40 kind you can get at any auto parts store). These are tried and true senders with years of use.

My question (because JPI says no to everything)...
- Has anyone used any non JPI sensors with any success? Oil-P is what I'm interested in now, but any input on any sensors would be great since that will open up the possibility of expanding the JPI use and removing more of the analog gauges from the panel at a much lower cost.
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  #2  
Old 11-18-2021, 05:10 PM
Cumulo Cumulo is offline
 
Join Date: Apr 2015
Location: KHMT
Posts: 91
Default Amazon?

This may be helpful
I looked at the on-line manual for your monitor.
From that it looks like the type of oil pressure sender/transducer the EDM-350 uses is 5 Volt solid state of a common sort. So an old style auto resistance type is not directly compatible.

However, I found several units of similar type to the factory unit that might work quite well.

There are several listed by various vendors on Amazon. Here is one:
https://www.amazon.com/AUTEX-Pressur...dp/B00NIK98O8/

This one is rated for 125 deg C as are the others listed that provide that spec.
The install manual shows the oil sender mounted away from the engine and connected by hose - to reduce the heat the unit is subjected to, I assume.

Since these sensors are available, accurate, reliable, cheap, and easy to interface to glass, I wonder why your post was not swimming with responses? I'll await the avalanche of real experience reports.

Ron

Last edited by Cumulo : 11-18-2021 at 05:16 PM.
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  #3  
Old 11-18-2021, 05:29 PM
blaplante blaplante is offline
 
Join Date: Jan 2010
Location: Southern California
Posts: 352
Default

Did JPI change the type of oil pressure sender between the EDM 730 and the 350? The 730 uses a standard resistive sender. You can PM me for the details.
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  #4  
Old 11-18-2021, 06:01 PM
Cumulo Cumulo is offline
 
Join Date: Apr 2015
Location: KHMT
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Quote:
Originally Posted by blaplante View Post
Did JPI change the type of oil pressure sender between the EDM 730 and the 350? The 730 uses a standard resistive sender. You can PM me for the details.
Yep, looks like it. The on-line install for the 730 shows the resistive can type with 2 connection posts, while the 350 is a 3 wire connector with 5 volts, ground and output.
Ron
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  #5  
Old 11-18-2021, 06:35 PM
blaplante blaplante is offline
 
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Huh. At https://www.jpinstruments.com/wp-con...06-2017jfp.pdf
Page 12, it says "sensor 2 wire VDO"
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  #6  
Old 11-18-2021, 07:24 PM
Cumulo Cumulo is offline
 
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Quote:
Originally Posted by blaplante View Post
Huh. At https://www.jpinstruments.com/wp-con...06-2017jfp.pdf
Page 12, it says "sensor 2 wire VDO"
Well, looks like they have made a change. The doc for the 350 on their website is updated to 2021 and shows a solid state 3 wire oil pressure sensor..

https://www.jpinstruments.com/wp-con...7-10-21Joe.pdf

So, obviously two versions.

Would have to do some research to know what will work with what.

Ron
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