My Impreza Type RA has one and theyre allegedly the best engines but do I fuck know what it means

 

http://legacycentral.org/library/literature/deck.htm

 

So is closed deck better than do u think Euan,doesnt sound like it judging by what I read there

 

Closed has more support around the liners so in most cases a closed deck is better.

On high power scoobs with open deck blocks the liners split above 500 bhp ish

Although im sure the meag high power skylines run open deck blocks for some reason.

 

Rover K series have got to be the worst open deck block ever...the liners just sit in place really