MG Sports Cars

engine swaps and other performance upgrades, plus "factory" and Costello V8s

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don-ho
Don Prince
Atlanta GA
(13 posts)

Registered:
06/02/2011 10:13PM

Main British Car:
1973 RD 302 in progress

authors avatar
302 oil pressure sense line
Posted by: don-ho
Date: October 16, 2012 07:39PM

Hello all, I am beginning to connect gauges on my 302 conversion and was wondering what is the easiest way to plumb the stock oil pressure gage? Engine builder left a 2" extension ( riser) with what appears to be npt threads ( female) at the end. I've seen this on many conversions but am unsure on what to do next. I've seen a few that appear to be Teflon hose with a compression fitting, is this a suitable method? Any advice/help is greatly appreciated. Thanks in advance......Don Prince


DC Townsend
David Townsend
Vermont
(406 posts)

Registered:
11/21/2007 12:22PM

Main British Car:
'78 B (almost done) 30-over SBF, dry sump

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Re: 302 oil pressure sense line
Posted by: DC Townsend
Date: October 16, 2012 08:12PM

The extension is there to prevent the sender from interfering with the oil filter or filter adapter if you're running a remote filter (as I would guess you are). There may also be a 45º fitting on the end into which the sender fits. So, I would say, the easiest way to plumb the gauge is to simply screw your sender into the fitting, run the sender wire to the appropriate gauge. It's a good idea to use a small bit of thread compound (not thread locker of teflon tape) on the fitting to help create a firm seal.


don-ho
Don Prince
Atlanta GA
(13 posts)

Registered:
06/02/2011 10:13PM

Main British Car:
1973 RD 302 in progress

authors avatar
Re: 302 oil pressure sense line
Posted by: don-ho
Date: October 16, 2012 08:31PM

Thanks for the reply. Doesn't the oil pressure gauge simply take a small oil line from the oil system, I was unaware of any wires ( other than the light) that are run to the stock gauge? I am running a remote filter, might it be easier to run a line from there?
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DC Townsend
David Townsend
Vermont
(406 posts)

Registered:
11/21/2007 12:22PM

Main British Car:
'78 B (almost done) 30-over SBF, dry sump

authors avatar
Re: 302 oil pressure sense line
Posted by: DC Townsend
Date: October 16, 2012 09:11PM

Are you running a mechanical or electric gauge?


don-ho
Don Prince
Atlanta GA
(13 posts)

Registered:
06/02/2011 10:13PM

Main British Car:
1973 RD 302 in progress

authors avatar
Re: 302 oil pressure sense line
Posted by: don-ho
Date: October 17, 2012 08:00AM

Mechanical. Sorry, I should have specified the car is a 73 MGB.


DC Townsend
David Townsend
Vermont
(406 posts)

Registered:
11/21/2007 12:22PM

Main British Car:
'78 B (almost done) 30-over SBF, dry sump

authors avatar
Re: 302 oil pressure sense line
Posted by: DC Townsend
Date: October 17, 2012 10:04AM

Mechanical line should still be taken from the provided riser to assure accurate reading. Threaded fitting on the end of the capillary should screw into the end of the riser although, depending on the gauge you're using, you may need an adapter.


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