Oil pressure gauge fittings

[southerly95]

Where is the best place to put a hole for an mechanical oil pressure gauge fitting pipe going through the bulkhead please? The brass unions are about 5/8" wide whereas the pipe itself about 3/16".
Many thanks, John

[IslipMinor]

John,

Unless you already have a lot of additional wires going through the bulkhead where the standard wiring loom goes through, that is the easiest to use. Undo the 3 small screws that hold the triangular plates in place, they are already split to remove easily, as is the grommet. Pass the capillary tube and fittings through the bulkhead and refit the grommet and plates.

Also make sure that you route the tube (Edit: is it copper tube?), if so no tight bends and nowhere near anything electrical! Might be worth wrapping some insulation tape around the tube on the part inside the bulkhead?

Finally, before you fit the bulb (Edit: for bulb read tube fitting) to the head (Edit: for head read block), it is a good idea to make at least 1 complete circle with the capillary tube (about 4" diameter), in between the block and wherever it is supported in the engine compartment - helps to absorb vibration to avoid damaging the tube. Make sure that when fitting the bulb (Edit: read tube fitting) you do not allow the capillary tube to turn, or it is very likely to break.

[bmcecosse]

It's oil pressure - so no 'bulb' - but otherwise - wise words!
You should fit a T piece at the warning light switch location - so you can retain the warning light in addition to the gauge.

[IslipMinor]

Doooh! If all else fails read the post properly - for oil I read water and for pressure read temperature - I think I must be running a very high one!

Have edited the previous post to reflect it is an OIL PRESSURE gauge.