I recently fitted the Quality Classic mechanical oil pressure gauge kit to my 3.8S and found the easiest way to run the tube was through a hole about an inch to the right (looking from the front of the engine bay) of the rubber hose that feeds the scuttle vent and just above the VIN plate top edge. This hose is visible in the engine bay as well as behind the folding dash. It is necessary to poke it though the Hardura insulation but it is conveniently located just behind the gauges.
Not sure you could get to the trunk in a panic. It doesn’t take long for a car to burn to a point where a fire extinguisher won’t work. I carry two, one behind each seat. I once had to use one a short circuit with plenty of smoke. Make sure you remove all of the caustic powder shortly after extinguishing the problem. I went to a gas station and used the tire inflation machine to blast away as much as possible. The powder plays havoc to this day on electrical connections.
John, you wrote “the easiest way to run the tube was through a hole about an inch to the right (looking from the front of the engine bay) of the rubber hose that feeds the scuttle vent and just above the VIN plate top edge. This hose is visible in the engine bay as well as behind the folding dash.”
I have attached a photo I took a few minutes ago. I have been poking around under the dash etc but I don’t see any hole about an inch to the right of the hose for the scuttle vent.
I’ve been trying to find an extra hole, and I’m wondering if you made an extra hole? Or perhaps a previous owner made an extra hole? Or do you mean you ran your tube through the same opening as the scuttle vent vacuum hose?
I’m seeing a missing bolt in the bracket on the top-left center of my photo. I am wondering if I could feed the wire through that. Probably not the best idea, since a bolt belongs there.
Mark, that is the exact location but you have to drill a hole, there is no existing one there. You’ll see the rubber hose behind the center instrument panel. You will have to poke your wire through the Hardura insulation however. Let me know If you want a photo.
Here you go. This is a hole for the nylon tube that feeds my newly installed Classic Quality mechanical oil pressure gauge, recently featured on this forum. You will not need as large a hole as this since I had to push through a brass fitting to attach to the gauge. If doing again I would move it up 3/4 inch to not interfere with the VIN plate. Hole is protected by a rubber grommet. BTW, the new mechanical gauge is one of the best things I have done to that car in my 57 years of ownership. Highly recommended.
Fire extinguishers have powder which will settle over time. Discharging will result in more gas than powder. It is a very good idea to frequently turn them over until you hear the powder rush to the other end. You can do this several times and it will “fluff” up the powder adequately. Most have a tag noting the charge and recharge date on them. Good ones can be recharged and safety checked by those in the know.
Nitrous Oxide bottles need to have the nozzle pointed upwards so gas rather than fluid gets to the motor. Anyone running Nitrous in their Jaguars?