in vic the emmissions relkates to the engine not the car, if most people look at this, it changed also in nsw in july last year... sneaky s.o.b's.
strip the a14 for the crank and head and put it onto the a12 block (if it's the later 120y type), machine the crank, put a15 pistons on the a12 rods and have fun.
Im still waiting more for 1200rc to tell us whats involved in the e15 head transplant.

i'm itching to build me a turbo A12....

OK, so it has to be a 120y block, are there pre-emmisions ones? How do the RWC guys know the engine build date anyway?

It will be a supercharged engine so I wanted to drop compression/add strength. I had heard E15 pistons are interchangable with A15 ones, which are the same bore as A14 ones. So Hypereutectic E15 pistons would be my choice, wouldn't they?

The A14 crank conversion will work on either early or late A12's. In fact, the only running engine that i know of was first built here, & it uses an early A12 engine block. [see the photo album "At my local service station, Apprentices coupe engine"] Just use the block that suits your chassis to save conversion work.

how far can you overbore the early A12 block though? If I can use the pre-emmisons block I have it makes everything so easy & street legal. I might just order the biggest overbore rebuild kit I can & chuck the A14 crank/rods in. Do the bearings/everything else just fit up?

Quote:

Using A14 crank rods and pistons in a A12 block
Wouldn't the pistons pop out the top of the block due to a shorter block height or are the pistons going to be modified. I want to do this mod but I want to avoid custom made pistons and try and use something straight off the shelf, or have I missed something real basic here! Either way somebody school me.

ok if using a12 block, a14 crank you must use the a12 rods and resize the piston end of the rods to fit a15 pistons, they will then fit in the bored out block and not pop out the top of the block smacking the head or valves.
Well school you good young un