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#1 Clear plastic tube running through bulkhead behind glovebox
Posted: Mon Jan 26, 2026 10:40 pm
by rdaustin
Hi all. We have a long clear(ish) plastic tube with metal fittings either end... looks like it originally came through the bulkhead through the same grommet as the heater control cables, then ran across bulkhead and down under carbs. Where it enters the bulkhead, our disassembly photos seem to show that it sat behind the glovebox, but we can't work out what it ever connected to, as we don't think it was connected when we got the car. We have a very early 4.2 RHD FHC S1 (1965).
#2 Re: Clear plastic tube running through bulkhead behind glovebox
Posted: Tue Jan 27, 2026 12:25 am
by bitsobrits
Sounds as if it might be a tube for a mechanical (wet) oil pressure gauge. Usually these are tapped into the oil gallery at the location of the original electrical sender near the oil filer adapter. A quick look at the back of your oil pressure gauge will tell you if there is a threaded male boss to accept a tube fitting or not.
#3 Re: Clear plastic tube running through bulkhead behind glovebox
Posted: Mon Feb 09, 2026 7:13 pm
by rdaustin
Hi Steve. Thanks for the tip. We thought the same, but there's no boss on the back of the oil pressure gauge, so rules that out. It honestly looks like it has never been fitted to anything where it comes inside the cabin. Really odd.
#4 Re: Clear plastic tube running through bulkhead behind glovebox
Posted: Mon Feb 09, 2026 9:57 pm
by DWW
the question is[*] what oil pressure sender/gauge are currently installed in the car?
#5 Re: Clear plastic tube running through bulkhead behind glovebox
Posted: Fri Feb 13, 2026 6:52 pm
by AshM
Maybe a temporary fix for a corroded bulkhead heater transfer pipe?
Just a thought.
Ash
#6 Re: Clear plastic tube running through bulkhead behind glovebox
Posted: Wed Feb 18, 2026 10:14 am
by tim wood
What diameter is it?
Not spare screen wash tubing?
#7 Re: Clear plastic tube running through bulkhead behind glovebox
Posted: Tue May 26, 2026 8:10 pm
by rdaustin
Sorry for slow reply, and thanks for the advice. Turns out it was a redundant oil pressure sender pipe... Our oil pressure sender is electric but some E types were mechanical, so the Browns Lane team appears to have decided to fit the tube "just in case". (Living in Coventry, working in the auto industry (incl Jag some years back, nothing surprises me!)