This has probably been answered before but which cylinder bank is number 1? Is it the one towards the front of the car or the one towards the firewall?
Thanks

 

I guess I get to answer my own question but all this became moot when after changing the lower IMT O ring I discovered I now had a P0174 code for bank 2. Luckily I had the foresight to buy two O rings, just in case, from the Jag dealer yesterday. It's obviously smarter to just plan on replacing both O rings even if you're only getting a code for one bank as the other one is sure to follow sooner than later. All better now.

 

Stickman, bank one is the side nearest the firewall. Cylinder 1 is the cylinder furthest from the transmission on the bank 1 side.

Firewall
b
e 1 2 3
l
t 4 5 6

Radiator

 

Thanks Thermo. It took longer to figure out which bank was which than to replace the O rings.
Frank

 

Interesting. Aside from the orientation that's how Porsche numbers their cylinders on 911 engines. But then Porsche originally designed this engine.