im trying to figger something out here, im pritty sure im on the ball but just want second opinions bassically ive drilled all my S1 na block to accept the turbo lines now with the oil feed hole ive drilled it a bit but i not sure how much is too far, if i was to blow compressed air into the oil feed hole and if it blows out the top of the rocker cover it would mean ive drill into the gallery......correct?

or else u would be blowing into the case, seems about right

Quote: Originally Posted by legal6 im trying to figger something out here, im pritty sure im on the ball but just want second opinions bassically ive drilled all my S1 na block to accept the turbo lines now with the oil feed hole ive drilled it a bit but i not sure how much is too far, if i was to blow compressed air into the oil feed hole and if it blows out the top of the rocker cover it would mean ive drill into the gallery......correct? place an oil pressure gauge in the newly drilled hole and start the car, make sure it doesn't leak, you should see about 60 or so psi on start up and bout 20ish when warm depending on your engine

only one way to find out...

also it would blow into the sump and throught the dip stick if i removed it? Quote: Originally Posted by vltrb-0 place an oil pressure gauge in the newly drilled hole and start the car, make sure it doesn't leak, you should see about 60 or so psi on start up and bout 20ish when warm depending on your engine should also have mentions car aint running, it wont be running for while, still need to finish wiring, fuel system and a few other things first

i hope you are going to clean out all the metal from the oil gallery before you assemble or fire up the engine..

yerp have been, using lubication on the drill bit to draw it out, running a magnet into the hole to pick up little fillings and filling the system with compressed air so it will blow out how far do you need to drill??????? anyone got a idea? is the oil gallery on the oppsite side of the block? which runs down along with the pressure sensor and filter? have drilled 117mm in so far and its still drilling solid cast iron, compresed air into it and its just blowing back out, hasnt breached anything just been up to u pull it and checked the depth of 5 diffrent s2 vl blocks all measured up to 175mm deep that sound about right?

no idea mate. sounds very deep.

has to go all the way to other side of the block just get a s2 block dude or bridge off the original oil pressure sensor and run a braided hose

Yep **** drilling and taping a block just go get a s2 block.

Quote: Originally Posted by rusty577 Yep **** drilling and taping a block just go get a s2 block. on the money there .drilling and tapping holes in the block is a c!@t of a job.especially the drain because of its size.starting with a s2 block is the way..

Quote: Originally Posted by 86 gmh on the money there .drilling and tapping holes in the block is a c!@t of a job.especially the drain because of its size.starting with a s2 block is the way.. yeah i also agree, if you dont drill spot on in the right spot it could weaken the block and crack. series 2 is the go..