Need help finding engine No.

[wombat2509]

Hello All
I have a '72 Capri 1600 it has a 691M block I am having trouble finding the engine no. .I have 2 spare 681 blocks & the no's. are punched into the block just above the oil gauge outlet it is not there on the 691.One suggestion was that it could be on a machined shelf on the top but there is no marks there either.

Does anyone have any other suggestions,this was one only 4 problems for a blue slip but seems to be the biggest if I can find this I will be on the road in a couple of weeks HELP

[R0BD0G]

between cyl 2/3 on the rhs top of the block?

[wombat2509]

Thanks for that,but the block (it is a 691M block)must have been decked &the number taken with it ,I have 2 other 681F blocks the same ,I draged one out into the sun the other day & went over it with a magnifing glass in the end I gave up when I went to put it away I noticed a mark above the hole where the oil guage comes out one engine no.,checked the other block the same may be it is a secondary stamping spot? no idea,the only trouble is there is no markes on the engine in the car :evil3:,but thanks for your help it is appreaciated.

[R0BD0G]

hmm.. go and talk to a local copper?? he he.. dont they have some dye or something that allows them to see an engine number even if the block has been decked? or is that i myth?

[graham7773]

Acid or X-ray depending on the metal thickness where the number is stamped. You may need a police number but you will have to show the history of the motor

[JamesR]

get the number stamp out, and stamp it the same number as your spare engine...

;)

[wombat2509]

I have old rego. papers & a reciept type thing from when the motor was put in as it is a recoditioned motor with a engine no's on them thorght I would take James's suggestion and use that no. local blue slip place just wants to find the engine no. happy to help :

[wombat2509]

Know you will all be as excited as I am or not,I spent the last 3 days trying to apply an engine no. to the block of the Capri today after 3 attempts at various engineering shops and 1 by myself I stumbled across the number covered in oil and crap on the front of the block above the fan almost impossible to see. :