Originally Posted by throttlebodiedzetecturbo
JanWRC Blocks have liners
and all the blocks have a part number that begins with YC do yours
I know the lads that brought all the last remaining genuine WRC blocks and they look nothing like yours
would you like some pics so that you can see one for the first time........................
Just out of curiousity after reading this thread I decided to speak to m-sport regarding this matter as they would obviously be able to clarify things.
This is the information from m-sport
I am afraid that I cannot give you any specific information on the CGI enquiry however I can tell you that the base block was the same Zetec unit for all Focuses. The engine was originally developed by Mountune and did not have liners. The engine was then redeveloped by Cosworth and they introduced a liner to the block. The YC that you refer to is the model number used by Cosworth for this engine and is the prefix for all part numbers that relate to this engine.
The engine which did not use liners was developed by mountune who clarified when asked that this was a compacted graphite iron block (CGI) but would not provide additional information.
Considering that both these blocks were used in the WRC focus I feel it is impossible and wrong to state for a fact that ALL WRC Focus blocks have liners