AY12
April 17, 2010
Ian has kindly sent me some large scans of the AY12 tech drawing from the Autotechnic issue he got his hands on. Cheers Ian. I think if I had unlimited funds, a KB110 with an AY12 would be the power plant of choice. Oldschool tech at it’s best. Note the 90* banked distributor, the inverted oil filter and tall sump.
After the jump is a design drawing of an AZ12 which I haven’t seen before. A LZ head on an A series. The LZ head was a twin cam cross flow head originally designed for the L-series. Coool.
Beeoneoneoh 
That AY drawing must be for a Cherry (E10) hence the tall sump with engine mount lugs on it. Cool drawings!
does this mean its possible to build ur own az12? like building a 30det
haha yeah bro like a 30det
the AZ12 head exists its owned by a person in new zealand by the name of wayne mckinnon was last working at a chop shop somewhere in NZ
Crazy, never seen/heard of a LZ head on an A series. It must be a different casting, bore centres between an L and A are mucho different. Look at that port angle, so epic. I wonder if it is a short stroke LZ14. Any more info Chris?
Oh yeah and dont confuse LZ with Z. The Nissan Z motor is effectively an L block with a crossflow head. This is an LZ head, racing only and worth a fortune now.
Not unless you can read Japanese, may look into it however. Yeah LZ =/= Z head, didn’t really even think about the Z.
Beautiful technical drawings. I think I could even convince my girlfriend to hang these in the hall.
You got a great blog here, thanks for putting in the time.
C.
[…] AY12! If the LZ14 that I posted yesterday was rare… this is unobtainable. As of now this is the only footage I’ve seen of this engine and only touches of information exist. Ian took some scans of the TS Cup issue of Autotechnic a while back which featured some information and tech drawings of the AY12 and even an AZ12, click here. […]