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Old 07-13-2018, 06:32 PM
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fishEH fishEH is offline
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Best way to install a fuel pressure gauge on my '94 D1 with no schraeder valve?
I know I can cut the flexible line and install a Tee, but I thought it'd be cleaner to thread a Tee right into the stock fitting?
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'95 D1 Project Truck.
'94 D1 Too good to pass up. OME lift, 265/75/16 BFG AT's, Detroit/TruTrac, etc

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Old 07-13-2018, 10:53 PM
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I would think something like the below would be the way to go. Theoretically, you should be able to screw it in between the fuel line and fuel rail.


https://www.summitracing.com/parts/cei-102071
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  #3  
Old 07-14-2018, 12:02 AM
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This doesn't answer the question but it's an option that you could work into the mix.


https://discoweb.org/showthread.php?t=61690


As the owner of a RRC sans fuel rail valve I would also be curious to know of a modification to install a port to test for fuel pressure.
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Old 07-17-2018, 12:51 PM
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Unfortunately both of those options require use of the schraeder valve which my truck does not have.
Anybody know the size or thread/pitch of the compression nut in my above picture?

Quote:
Originally Posted by Agent View Post
I would think something like the below would be the way to go. Theoretically, you should be able to screw it in between the fuel line and fuel rail.


https://www.summitracing.com/parts/cei-102071
Quote:
Originally Posted by Tugela View Post
This doesn't answer the question but it's an option that you could work into the mix.


https://discoweb.org/showthread.php?t=61690


As the owner of a RRC sans fuel rail valve I would also be curious to know of a modification to install a port to test for fuel pressure.
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'98 D1 Trail Rig. Lockers and whatnot. Retired
'96 D1 Daily Driver. OME lift, 235/85/16 Toyo AT's.
'95 D1 Project Truck.
'94 D1 Too good to pass up. OME lift, 265/75/16 BFG AT's, Detroit/TruTrac, etc

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No matter how hard you stir it you won't make chocolate ice cream out of a bucket of shit
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Old 07-17-2018, 04:55 PM
robertf robertf is online now
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you could use this one after the fuel filter if its just temporary

https://www.summitracing.com/parts/a...SABEgIVS_D_BwE
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  #6  
Old 07-17-2018, 04:56 PM
p m p m is offline
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Can you just swap in a fuel rail with a Schrader valve?
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Old 07-17-2018, 07:11 PM
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Quote:
Originally Posted by p m View Post
Can you just swap in a fuel rail with a Schrader valve?
Yeah. But if I'm going to go through that effort I may as well just replace the engine.
I have a loose fuel rail. Maybe I'll take it to the hardware store and see if I can match the thread.
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'98 D1 Trail Rig. Lockers and whatnot. Retired
'96 D1 Daily Driver. OME lift, 235/85/16 Toyo AT's.
'95 D1 Project Truck.
'94 D1 Too good to pass up. OME lift, 265/75/16 BFG AT's, Detroit/TruTrac, etc

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No matter how hard you stir it you won't make chocolate ice cream out of a bucket of shit
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Old 07-17-2018, 07:50 PM
p m p m is offline
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Quote:
Originally Posted by fishEH View Post
Yeah. But if I'm going to go through that effort I may as well just replace the engine.
There's a bit of a difference in the level of effort, unless I am missing something badly. Especially on a 14CUX truck.
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Old 07-17-2018, 09:07 PM
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I know the 3.9 and 4.0 disco is interchangeable. I may have done the swap to get the schrader valve on my 95. It has one now

Should take less than an hour to change
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  #10  
Old 07-18-2018, 09:28 AM
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Quote:
Originally Posted by p m View Post
There's a bit of a difference in the level of effort, unless I am missing something badly. Especially on a 14CUX truck.
I know, I'm just exaggerating. I have a 4.6 14CUX in my garage that my plan is to rebuildand drop in this truck, so my level of dedication to fixing the current engine is not high.

Quote:
Originally Posted by robertf View Post
I know the 3.9 and 4.0 disco is interchangeable. I may have done the swap to get the schrader valve on my 95. It has one now

Should take less than an hour to change
I've got a 3.9 and 4.6, both 14CUX, in my garage. I was hoping for a thread on solution. :/
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'98 D1 Trail Rig. Lockers and whatnot. Retired
'96 D1 Daily Driver. OME lift, 235/85/16 Toyo AT's.
'95 D1 Project Truck.
'94 D1 Too good to pass up. OME lift, 265/75/16 BFG AT's, Detroit/TruTrac, etc

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No matter how hard you stir it you won't make chocolate ice cream out of a bucket of shit
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Old 07-18-2018, 10:00 AM
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I think Agent's post makes sense. In this case you are ADDING a schrader between the fuel line and the rail.

It looks like the top of the T goes between the fuel line and the fuel rail while the bottom of the T is a schrader. Maybe I'm reading it incorrectly though.
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RAVE in pdf:
https://drive.google.com/open?id=0By...FdyX1VQMS1iN00
Discovery I exploded parts diagrams....
http://www.allbrit.de/NAV.cfm?SPRACHE=EN&PAGE=491338
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Old 07-18-2018, 11:11 AM
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Quote:
Originally Posted by WaltNYC View Post
I think Agent's post makes sense. In this case you are ADDING a schrader between the fuel line and the rail.

It looks like the top of the T goes between the fuel line and the fuel rail while the bottom of the T is a schrader. Maybe I'm reading it incorrectly though.
That's not how I read it....
"Description: Caspers Electronics fuel line tap Schrader tee fittings attach to the fuel rail and allow the addition of a fuel pressure gauge, while also allowing access to the fuel port. They are designed to depress the valve in the fuel rail, eliminating the need to remove the valve for fuel pressure measurement."
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__________________
'98 D1 Trail Rig. Lockers and whatnot. Retired
'96 D1 Daily Driver. OME lift, 235/85/16 Toyo AT's.
'95 D1 Project Truck.
'94 D1 Too good to pass up. OME lift, 265/75/16 BFG AT's, Detroit/TruTrac, etc

Quote:
Originally Posted by discostew View Post
No matter how hard you stir it you won't make chocolate ice cream out of a bucket of shit
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Old 07-18-2018, 11:59 AM
p m p m is offline
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BTW, I have three 14CUX engines, all with Schrader valve on the fuel rail - but all were 1995. Same fuel rail as 96 GEMS.
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  #14  
Old 07-18-2018, 04:47 PM
mearstrae mearstrae is offline
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I have seen "Saddle Taps" used by air conditioning techs with various size Schrader valves, to allow for use of a gauge, or charging of a system. Maybe a HVAC supplier would have something that would work on a fuel rail. If there's one available, you could install it where ever the best access is. These things just clamp around the pipe and presto you have a Schrader.



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  #15  
Old 07-18-2018, 06:10 PM
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Quote:
Originally Posted by WaltNYC View Post
I think Agent's post makes sense. In this case you are ADDING a schrader between the fuel line and the rail.

It looks like the top of the T goes between the fuel line and the fuel rail while the bottom of the T is a schrader. Maybe I'm reading it incorrectly though.
That was my though too, but the discription doesn't seem to match with what it looks like in the picture.
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  #16  
Old 07-19-2018, 09:09 AM
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Yeah, it appears to be different. It looks like a solid idea if the right type of T can be found.
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1997 Discovery I SE - 150k miles

RAVE in pdf:
https://drive.google.com/open?id=0By...FdyX1VQMS1iN00
Discovery I exploded parts diagrams....
http://www.allbrit.de/NAV.cfm?SPRACHE=EN&PAGE=491338
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