open deck or closed deck?
30 January 2013, 01:02 PM
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open deck or closed deck?
Hi all, could someone techy explain whats an open deck engine and a closed one. As haven't got a clue? I have a blob Wrx.
Cheers Phil
30 January 2013, 01:06 PM
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open deck on the left closed deck on the right closed deck is a stronger block and can handle big power due to having less space around the bores if that makes sense
30 January 2013, 01:18 PM
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Thanks Craig. I would assume a std Wrx would be an open type and sti closed?
30 January 2013, 01:22 PM
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nope, sti's were either open or semi closed.
older wrx's had closed deck blocks, look for a cross hatch on the block that denotes closed
30 January 2013, 01:25 PM
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Thanks mate will have a look at mine. But as newage can probably guess
30 January 2013, 01:33 PM
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Surely though piston and rod quality would be the bigger deciding factor up to a point?
30 January 2013, 01:36 PM
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A well put together open deck block is good for 450 bhp anyway.
30 January 2013, 04:17 PM
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As above Open Deck block is not the problem,we are run Open Deck Block at 490bhp plus NOS.
If its Open Deck Block put together properly and right parts should be OK up to 500-550bhp
Jura
30 January 2013, 04:23 PM
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Quote:
Originally Posted by
craigybaby
open deck on the left closed deck on the right closed deck is a stronger block and can handle big power due to having less space around the bores if that makes sense
That's Semi closed on the left.
30 January 2013, 06:00 PM
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oops you are correct i'll get my coat lol
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