Hi Bill.
Fill in the blank spaces (XX)...........clever clogs
Originally Posted by icecossie
What does the YBB, YBD, YBB, YBJ and YBT
Stand for???
They were Cosworth's own internal/build project codes..........
YAA March 1983.........this was the original factory proto-type using the T88 16 valve head on a pinto block.
YBA October 1985........A development of the above engine with a turbo bolted on, and quite a few internal changes to suit....The first production YBB's were built at the new purpose built Wellingborough factory......18,990 units built
YBC January 86..........Group A rally engine.
YBD June 87......these were "recycled
YBB stock" converted to RS500 spec.....525 units built.
YBE March 87......built for comercial sale for non Ford road car use.
YBF April 87......Race RS500 engine = 560 BHP !
YBJ October 89....."green top" and
YBG......"red top". total of 12,515 units built.
YBT March 92......"blue top" big turbo Es Cos engine, total of 5,186 units built.
YBP June 94......"silver top" small turbo Es Cos.