Quote:
Originally Posted by Spyderman
• for the modification of the bore or for sleeving if the
original block is not fitted with sleeves.
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it says you can sleeve it only if the block was not sleeved already and porsches gt3 block is sleeved
from the new gt3 "The cylinder cases are made of a light alloy featuring aluminum, with Nikasil®-coated liners. For improved efficiency, including better fuel economy, the engine's compression ratio was raised to 12.0:1."
I guess those aluminium nikasil liners were not strong enough so they put in steel ones wich is against the rules, the parts must remain original