cozz-uk

turbo went so had a brand new turbo put it all back together yesterday and theres a loud tapping from engine thought it was timeing timed it up 3 times so isnt that what could the problem be :s the engine ran sweet as a nut before it had the new turbo

cossieDavedree

hi there just asking few questions without offending your competance.

why would you think the timing had adjusted all of a sudden?
its non adjustable. Do you mean cambelt timing??

have you done a cambelt before??

Does it sound like tappets? or does it sound like a knock like valve slightly brushing piston??

Do you have an oil pressure gauge? whats it giving out ????
Did the turbo go because the bearings in turbo made a noise ???
It sounds like you have an oil pressure problem and no oil is getting to head and turbo??? (ie oil pump ?
let me know how you get on matey.

cozz-uk

took head off and its either the crank or bigends as its been throwin the pistons up and they have been hitting the head/inlet valves thankfully it hasnt done any damage

cossieDavedree

ok but did the engine run fine before you took the head off??

The reason I ask is if you timed the engine up did you time tdc on the pulley to the actual peg or to the white grooved line on the pulley??

I'm not trying to take the mickey its just i know a lot of people who have timed tdc to the groove, and that groove isnt tdc on the pulley the peg is.

cossieDavedree

and so with it being out of time by a few teeth the piston makes slight contact with the valves.

saff cosworth

there might not be anything wrong with your torbo
by the sound of what your saying

get someone to time up the engine and see if that'll sort the
problem

cozz-uk

nah the turbo was nakered there was alot of play in the fan and yes it was timed up properly theres alot of up and down play in the pistons wich was causing the problem and no the engine didnt run fine before i took the head off only reason i came on here and asked is because the sound was a bit unusual i work on cosworths qwite alot the engine will be out and stripped tomorrow so will find out what is wrong with the bottom end hopefully nothing to drastic

saff cosworth

all going well, nothing too serious i hope

let us know the verdict when you get a chance