first of all sorry for my poor english

Last year I started an off road buggy (rock crawler) project based on a jaguar V12 6l and automatic transmission
I bought a complete car (4 doors XJ81 from 1993) and I removed the engine and gearbox. I took a lot of pictures with my phone, but unfortunately my mobile phone broke and I was unable to recover the pictures.

Now I am at the stage of mounting: cooling, fuel lines, brake lines and servo steering and to be honest I don't know exactly how to do it.

Now I need help with cooling lines:

1. engine oil lines are going just to the small radiator, while the gearbox oil lines are entering the small radiator and after going through the big (water/oil) radiator ?
2. near the oil dipstick is a water line that I don't know where exactly to connect

I really appreciate your help

thanks

 

Sorry, don't have a 12 but maybe studying this parts catalog will be of some help?

XJ6 & XJ12 from (V)667829 up to (V)708757 - Canada/USA | Jaguar Heritage Parts UK


Larry

 

thanks Lawrence; I searched that site, but the info is not complete
I found also a V12 6.0l manual, hopefully all models are the same.

So regarding the oil pipes is now clear, regarding the water circuit I will bypass the heater and connect directly the pipe near the oil dipstick to the radiator.

However I don't know how to connect the fuel lines. So far I connect the the fuel feed line and the fuel return line. But i saw that there is also a fuel vent line ? what is this and where should I connect ?

 

The fuel system on a 12, (if it's like the 6) would be part of a "closed" system which prevents venting fumes into the atmosphere, i.e. pollution control.

Venting (IIRC) would eventually lead back to the tank, but on the way would pass through a system of electrically controlled and vacuum valves with a carbon canister purging the fumes back into the intake - a completely closed system that uses a sealed (non-vented) fuel tank cap.

If you take a look at the site again it might illustrate the routing from the fuel tank.

I suppose if you're using a custom fuel tank with vented cap you would probably only need the supply and return lines?

No doubt most rock crawler builds out there probably aren't too concerned with things like EGR and pollution controls?

Larry

 

so will work just with the supply and return line ?
I have to check where the vent line is getting out of the engine

 

I believe it will work - my WAG is that the the vent line, at least one end of it (2 ends on the 12?) lead eventually to the intake manifold(s)?

On the 6 one line runs from the canister > purge valve > intake manifold.

Bear in mind all I'm telling you is total guesswork on my part!

Larry

 

I managed to connect the engine cooling pipes to the radiator located in the Back and also the fuel lines.

Now I am looking at the steering reservoirs: there are 2 - 1 for the steering fluid, while the second is with a green fluid - is written Castrole levelling fluid CHSM05966.
This is the suspension leveling system? uses the same pump as for steering ?

how can I disconnect ? if I disconnect directly should not be a problem as the pump will run without the leveling fluid ?

 

I have one more question please

I have the master cylinder brake and the high pressure pump; master cylinder is having 3 connection + 1 from the reservoir to the pump.
I don't know how to connect the 3 connections - one should be Input from the pump and 2 are brake lines - front and back.

Also the pump should be electrically connected directly to the battery ?

thanks

 

hello,

do you have the engine electrical ?
I have 2 ECU connected to the engine wires, and seems to have also vacuum lines

tks