why would this tool be used on a V12 M70 engines?

[Mordan]

Petrol Engine Timing Tool - BMW M40/M43/M70/M73 Sealey VSE118


http://www.justoffbase.co.uk/Petrol-...-Sealey-VSE118

I learned though that the M73 is used on a Roll Royce

Is the M40 similar to the M70?

[shogun]

yes,
Suitable for setting the camshaft in the timed position on BMW M40/M43/M70/M73 petrol engines.
Camshaft alignment tool for BMW M40/M43/M70/M73 petrol engines.
Contents: Camshaft Setting Plate, Locking Pin

For V 12 engines you must have 2 blocks and the locking pin for this procedure

http://www.zdmak.com/wbstore/main.as...CTMP=1&LowCt=0

[Jon K]

OP: M70 is SOHC - thats a "cam lock" tool for an SOHC motor.