TOMMY_TURBO

Hi every1 I haven't been on here for a while as been rebuilding my saph had 4 new sleeves new crank bearing seals ect ect the problem I'm having is the car runs perfect and engine is silent but when engine warms up its gets a rattle that's is similar to rod knock but no we're near as bad and it looks like oil is getting very thin when warm but if I let it cool down and start from cold it's perfectly silent again iv always used same oil without problems before 10/40 but Is this to thin for a freshly rebuild yb?

luke_rs1800

have you done an oil pressure test ? when warm ?

TOMMY_TURBO

Na mate ain't got oil pressure gauge plumbed in yet

luke_rs1800

i suggest you do one mate. when i rebuilt my rst crank regrind etc etc i had the same problem! i changed everything! and then finally found out that the main bearings were the wrong size block side! im not saying this is your problem but you need to know if its actually dropping pressure or not. if not then you know to look down other paths.

TOMMY_TURBO

Can't get my pressure sender to fit anywhere lol

luke_rs1800

remove the standard oil pressure switch and fit it there.

TOMMY_TURBO

Tried that but different size thread was told it was a cosworth 1 aswell lol

luke_rs1800

get an adaptor then. or just borrow an oil pressure tester kit if you can. but if it is low oil pressure then it will be causing damage when it drops. from what your saying tho i would say its the wrong bearings fitted.