well i just finish building a new block and turbo set will post pics soon.... anyways i know these early 1.8 blocks have a oil galley for a feed on the exhaust side.. i see theres two bolts there... one small one big.. witch one is the correct one... and what the thread is it if you happen to know. it would save me a lil time.

 

Its the small one.

 

oright cool thats the one closest to the end of the block any i deal what the treading??

 

10mm x 1.5

 

Did you bother reading the sticky FAQ at the top of this forum secton? There is even a picture shown there ...