Classic Mustangs List Archive

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Mail From: zrichter (Z. Ray)


If I was adding an after-market gauge (and I have) I would use a
mechanical gauge for oil pressure, not one with a sending unit.

Z. Ray
'66 GT-350


>
> Message: 1
> Date: Wed, 24 Jun 2009 23:19:56 -0700
> From: Brandon Peskin <mustang at peskin.org>
> Subject: [CM] oil pressure... stumped
> To: A list for owners of Classic Mustangs
> <classic-mustangs at lists.twistedpair.ca>
> Message-ID: <AB55F90B-0A47-40AF-BB80-CFA3C04BD70D at peskin.org>
> Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes
>
> So I'm putting in this new fandangled gauge cluster. Got the temp
> gauge, tach, fuel gauge, and voltmeter (thanks everyone) working, now
> onto the oil gauge:
>
> I have the stock-style oil gauge metal extension screwed into the
> block followed by a 1/8 NPT adapter to fit the oil sending unit.
>
> Fire up the engine and the gauge reads 50 PSI at idle. Figure the old
> wire must be brittle and providing for higher resistance so I run a
> temporary new wire to see if it helps. Same, same. Pulled the teflon
> off the threads of the sending unit (thinking perhaps there's a
> problem grounding the sending unit). Still 50 PSI.
>
> This is unusually high isn't it? I thought the operating PSI was 35-55
> PSI. In my limited experience helping a neighbor install a new oil
> gauge in his chebby, I've seen unusually LOW pressure due to
> inadequate grounding, bad sending wire, etc -- but never unusually
> HIGH pressure. If this is not considered "high pressure", then I
> apologize for my idiocy

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Mail From: gregm (Greg McArthur)

Why?



From: classic-mustangs-bounces at lists.twistedpair.ca
[mailto:classic-mustangs-bounces at lists.twistedpair.ca] On Behalf Of Z. Ray
Sent: Thursday, June 25, 2009 2:06 PM
To: gregm at xmission.com
Subject: Re: [CM] Classic-mustangs Digest, Vol 75, Issue 22





If I was adding an after-market gauge (and I have) I would use a mechanical
gauge for oil pressure, not one with a sending unit.



Z. Ray

'66 GT-350









Message: 1

Date: Wed, 24 Jun 2009 23:19:56 -0700

From: Brandon Peskin <mustang at peskin.org>

Subject: [CM] oil pressure... stumped

To: A list for owners of Classic Mustangs

<classic-mustangs at lists.twistedpair.ca>

Message-ID: <AB55F90B-0A47-40AF-BB80-CFA3C04BD70D at peskin.org>

Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes



So I'm putting in this new fandangled gauge cluster. Got the temp

gauge, tach, fuel gauge, and voltmeter (thanks everyone) working, now

onto the oil gauge:



I have the stock-style oil gauge metal extension screwed into the

block followed by a 1/8 NPT adapter to fit the oil sending unit.



Fire up the engine and the gauge reads 50 PSI at idle. Figure the old

wire must be brittle and providing for higher resistance so I run a

temporary new wire to see if it helps. Same, same. Pulled the teflon

off the threads of the sending unit (thinking perhaps there's a

problem grounding the sending unit). Still 50 PSI.



This is unusually high isn't it? I thought the operating PSI was 35-55

PSI. In my limited experience helping a neighbor install a new oil

gauge in his chebby, I've seen unusually LOW pressure due to

inadequate grounding, bad sending wire, etc -- but never unusually

HIGH pressure. If this is not considered "high pressure", then I

apologize for my idiocy



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