[DeTomaso] Any Issue with using an Oil Pressure Gauge for Fuel Pressure???

[Ken Green]

Hi Boyd,
 
    Basically, I plan to have a cage built into the body as tightly as possible, and build a new dash inside the cage.  I want to keep dash as close to stock as works, but sitting in the car and looking forward, I don't like having critical gauges as far below the windshield as the stock design.  It looks like there is only room for two 5 inch gauges (speedo and  MSD tach/boost gauge) I can see through the steering wheel, but I'd like the rest of the gauges to the left and right of the speedo and tach at the same height so I don't have to look down to see them.  I think there is plenty of room for the 2 5/8 gauges in that layout.
 
   I also bought a couple of the 2 1/16 MSD trans temp gauges so I can use one for oil temp.  Looking at the MSD gauge faces, I think it will be easy to print an overly on my PC to change the labels to what I want, mainly because of their unique design (no needle).
 
Ken  (it must be the agent orange finally getting to my brain after 40 years)




--- On Mon, 3/16/09, boyd casey <boyd411 at gmail.com> wrote:

From: boyd casey <boyd411 at gmail.com>
Subject: Re: [DeTomaso] Any Issue with using an Oil Pressure Gauge for Fuel Pressure???
To: kenn_green at yahoo.com
Cc: detomaso at realbig.com, JDeRyke at aol.com
Date: Monday, March 16, 2009, 5:02 PM



I bought all new MSD LAZER gauges for my car. The one problem i see is that the oil pressure sending unit has a specific place to screw in to get a pressure reading. My fuel pressue gauge (which is not MSD reads the pressure by being "inline " in other words the fuel line goes right through the fitting. Where would  you screw in the sending unit to get a reading for the fuel pressure. And as mentioned earlier my car which is not EFI only gets around 6psi on the fuel pressure . If you have an appropriate place to plumb in the sending unit (which comes with the MSD LAZER oil pressure gauge )the specs say it is accurate from 0 to 100 PSI. Another issue is that the MSD oil pressure gauge is 2 5/8" while standard Pantera gauge panel openings are 2 1/8" so you also have to figure out wher you will put it. They do make a dual sweep gauge  that is Vacuum and boost that is only 2 1/16"  . That might be better suited to your purpose the boost range is 0 to 30
 psi. Their dual sweep gauges are very cool. They read one value on the left half and one on the right. 
Boyd
On Mon, Mar 16, 2009 at 7:24 PM, Ken Green <kenn_green at yahoo.com> wrote:

Jack,
 
    The MSD gauges are "suppose" to be super accurate.  This is a turbocharges injected application, so fuel pressure will be about 43 PSI + boost (using a boost reference pressure regulator).  All the Autometer fuel pressure gauges are 15 PSI for carbs and 100 PSI for EFI.
 
Ken


 


--- On Mon, 3/16/09, JDeRyke at aol.com <JDeRyke at aol.com> wrote:

From: JDeRyke at aol.com <JDeRyke at aol.com>
Subject: Re: [DeTomaso] Any Issue with using an Oil Pressure Gauge for Fuel Pressure???
To: kenn_green at yahoo.com, detomaso at realbig.com
Date: Monday, March 16, 2009, 4:01 PM




In a message dated 3/16/09 3:38:54 PM, kenn_green at yahoo.com writes:

> The very cool MSD gauges being sold for about 1/4 retail include a 100 PSI

> oil pressure gauge.  Is there any obvious reason why it couldn't be
used as a
> fuel pressure gauge?
>
None except for an accuracy issue- gauge accuracy is usually 2% or 5% of FULL
SCALE deflection, so a 0-15 psi carbureted gauge will be much closer to
correct than a 0-100 psi gauge if both were connected to the same fuel pump.
You
might be able to 'tweek' the accuracy in the gauge works if it makes
any
difference to you. FWIW- J Deryke


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