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       #Post#: 65359--------------------------------------------------
       tdi oil pressure thread 
   DIR By: Lurch
       Date: June 22, 2013, 9:07 am
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       I have a capillary oil pressure gauge I intend to fill a hole in
       the dash with
       It would be nice if it actually worked as a gauge rather than a
       draft excluder so I need a T piece to plumb it in
       Merlin Motorsport have several but i dont know which one to buy
       Does anyone know the thread of the oil pressue switch on a disco
       200tdi?
       ???
       Ive read on the web somewhere, M16 X 1.5 but that sounds large
       to me,can anyone confirm?  ???
       #Post#: 65375--------------------------------------------------
       Re: tdi oil pressure thread 
   DIR By: clunk
       Date: June 22, 2013, 12:39 pm
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       I've got a t piece ready to fit  came with a pair of TIM gauges
       from I think Merlin  ...  putting a ruler to the oil t piece
       it is  10x1 mm    .... the water temp  sender is 16 x1.5.  I
       rang Merlin before ordering  they were very helpful,  but don't
       do the water temp fitting.
       
       #Post#: 65376--------------------------------------------------
       Re: tdi oil pressure thread 
   DIR By: Lurch
       Date: June 22, 2013, 12:46 pm
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       Thanks for that Dave, I'll order one up  :thumbs:
       #Post#: 65560--------------------------------------------------
       Re: tdi oil pressure thread 
   DIR By: Glen
       Date: June 23, 2013, 5:07 pm
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       Its definately M10x1 as I put an oil pressure switch from a VW
       on my 300 when the original broke.  The spin on oil filter
       housing on my 2.25 diesel which came off a 2.5 petrol is also
       M10 so maybe all 2.5's are?
       The VW link is useful as some VAG cars have VDO oil pressure
       sender/switch combined units on them which are worth over £50
       new but cheep from the scrappy - you can use them with a VDO
       electric gauge (if your lucky the car might have one of them
       too) thus its a cheep way of building an electric system (less
       prone to bursting a hose and filling the dash with oil).  The
       only problem with VW senders is they often triger at about
       0.5bar, which is too low for your main warning but would be okay
       suplimenting a gauge.  VWs actully have 2 oil pressure switches
       but the higher one works backwards (closes with pressure) so
       itsn't so useful.  I think the LR switch works at about
       1...1.4bar and its what I refitted to mine once I'd found a good
       second hand genuine one (am much better bet than wasting money
       on a useless new pattern one).
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