g'day guys

my 272 is doing something real interesting twice now on the way to work its lost oil pressure the first time about 3-4 weeks ago then today. today i put a pressure gauge on it & 0 pressure i pulled the pump the drive shaft was in the pump i turned it by hand & it spat oil out so not the pump i got a socket to fit the drive shaft pushed it up into the distributor and tried to turn it not slipping in the dissy put the pump back in & i had oil pressure 45psi at idle same thing happened the first time only i pulled the dissy.

i know its between the dissy & oil pump but the shaft looks fine except for some wear marks each end its also 8 inches long is that the right length guys your help is most welcome as i would like to solve this before my engine with its new crank go bang.

moz. geelong victoria australia.

graduate 1980, bus, truck, car, hot rod, boat, submarine, hovercraft, hydrafoil, firetruck, mobile home, jet, helicopter, cruise ship, motorcycle, bicycle, santa's sleigh, clock, alloy bullbar, alloy fuel tank, lens, dr who's tardis, matter - anti matter warp drive buffer & y-block lover

yeah sorry i forgot to say the dial gauge i have is for testing oil pressure & screws into the block

moz. geelong victoria australia.

graduate 1980, bus, truck, car, hot rod, boat, submarine, hovercraft, hydrafoil, firetruck, mobile home, jet, helicopter, cruise ship, motorcycle, bicycle, santa's sleigh, clock, alloy bullbar, alloy fuel tank, lens, dr who's tardis, matter - anti matter warp drive buffer & y-block lover

Hello All:Just my 2 cents worth but there is a pressure relief valve in pump.Is it possible it is sticking in "relief" position?Mark

  

yeah i thought of that but when i pulled the pump it was fine

moz. geelong victoria australia.

graduate 1980, bus, truck, car, hot rod, boat, submarine, hovercraft, hydrafoil, firetruck, mobile home, jet, helicopter, cruise ship, motorcycle, bicycle, santa's sleigh, clock, alloy bullbar, alloy fuel tank, lens, dr who's tardis, matter - anti matter warp drive buffer & y-block lover

Moz,

          Is the allen in the bottom of the distributor ok? Or has it rounded out and occasionally slips?

Frank/Rebop

Bristol, In ( by Elkhart) 

g'day frank

thats what i was thinking but with the sizzy still in place i put the shaft back in put a socket & ratchet on it worked it both ways & couldnt get it to slip at all im thinking of getting a new shaft just to be on the safe side.

moz. geelong victoria australia.

graduate 1980, bus, truck, car, hot rod, boat, submarine, hovercraft, hydrafoil, firetruck, mobile home, jet, helicopter, cruise ship, motorcycle, bicycle, santa's sleigh, clock, alloy bullbar, alloy fuel tank, lens, dr who's tardis, matter - anti matter warp drive buffer & y-block lover

sorry sposed to be dissy not sissy

moz. geelong victoria australia.

graduate 1980, bus, truck, car, hot rod, boat, submarine, hovercraft, hydrafoil, firetruck, mobile home, jet, helicopter, cruise ship, motorcycle, bicycle, santa's sleigh, clock, alloy bullbar, alloy fuel tank, lens, dr who's tardis, matter - anti matter warp drive buffer & y-block lover

moz it,s not a faulty oil filter ,or something floating in the pick up causing it to block the flow of oil some times.

    RAY. Y,S ALWAYS

g'day ray

my thoughts exactly it had a valvolene filter i changed it to a ryco a couple of months back i had the sump of & cleaned the pickup none the less i blew throug it & it was ok as well.

moz. geelong victoria australia.

graduate 1980, bus, truck, car, hot rod, boat, submarine, hovercraft, hydrafoil, firetruck, mobile home, jet, helicopter, cruise ship, motorcycle, bicycle, santa's sleigh, clock, alloy bullbar, alloy fuel tank, lens, dr who's tardis, matter - anti matter warp drive buffer & y-block lover

Make sure you are not using a distributor gasket because some rebuild kits give you a thick one and the distributor tends to cock when you tighten it and plus it gives you more distance on the pump shaft