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Fuel rail to Gauge adapter

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Old 04-22-2007, 12:44 AM
  #16  
testarossa_td
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Pretty. I am just scared to death of any fuel line in the engine bay, then running them by sparky mc spark there.....
Though you are the master of fuel lines. How comfortable do you feel with the connection at the end of the fuel rail?
Old 05-11-2007, 02:28 PM
  #17  
nickhance
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I'd like to find an adapter as well since I've got plenty of fuel pressure gauges (with their own assortment of adapters).

Does anyone know the thread measurements that I'd need to find the proper adapter, or a place that has one? It shouldn't be more than a few bucks to convert one thread to another...
Old 05-11-2007, 02:59 PM
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Dr.Porsche
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what cap do you take off/on to check feul pressure?
Old 05-11-2007, 04:38 PM
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sweet9fortyfour
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this one
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Old 05-11-2007, 04:59 PM
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Dr.Porsche
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Thank you.
Old 05-11-2007, 06:14 PM
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yoyoguy2
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i'm interested in an adapter too... i have a gauge that fits the rail on my jeep but it doesn't fit the 944. i was just looking at this the other day as i think my fuel pump check valve is bad.
Old 05-11-2007, 07:34 PM
  #22  
Dan Shea
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Originally Posted by Pauerman
Here's what I use on my car. I can splice in a "T" adapter and add a fuel pressure sensor if I want to datalog this value.



That engine is soooo clean... i'm jealous.
Old 05-14-2007, 10:42 AM
  #23  
nickhance
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So no one has measurements that will let us fit a standard gauge?
Old 05-14-2007, 11:50 AM
  #24  
sweet9fortyfour
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The nipple on the rail is 12x1.5 mm thread.
Old 05-14-2007, 12:45 PM
  #25  
nickhance
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Yay!

Thanks sweet9.. Unfortunately, I'm not near the car often enough to measure it, so that's really helpful.
Old 05-14-2007, 06:28 PM
  #26  
yoyoguy2
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i would be interested in an adapter that fits that to a schrader valve... that is (was?) standard on a lot of american cars, autozone/advance/etc usually stock schrader valve fuel pressure gauges.
Old 05-14-2007, 06:31 PM
  #27  
yoyoguy2
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from wikipedia:

The standard Schrader valve has the following thread:

External Thread.

METRIC: 7.7 mm OD, thread root diameter is 6.9mm x 0.794 mm pitch.

IMPERIAL: 0.305" OD, thread root diameter 0.302" x 32 tpi (threads per inch)


Internal Thread. (the valve itself)

METRIC: 5.30mm OD x 0.706mm pitch

IMPERIAL: 0.209" OD x 36 tpi.
Old 05-14-2007, 10:32 PM
  #28  
dan476
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Originally Posted by sweet9fortyfour
The nipple on the rail is 12x1.5 mm thread.
are you sure about that? Haynes states its 11x1.5 mm.
Old 05-14-2007, 10:39 PM
  #29  
Van
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Here's how I mounted mine:
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Old 05-14-2007, 11:05 PM
  #30  
sweet9fortyfour
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yep I'm sure
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