Technical 16v knocking noise from top end

[joejtss]

hi all, i need some help, i've got a problem with a 2.0 16v non turbo, its got a intermittant knockin noise coming from the top end it is quite mechanical interference noise. It has had a new inlet cam fitted as the 2nd lobe on number 1 cylinder had worn away, so i fitted a new cam and shim to that valve, my problem is the noise is still there!!! it has good oil pressure 3 bar till warm then 2.5. can anybody please point me in the right direction.
thanks in advance
joe

 

[J333EVO]

Could be camshaft end float, the cam runs in the head and this can become worn with age allowing the cam to float about this sounds like a taping coming from head.

No simple fix, new head easier, or someone who is very trick with a welder can rebuild the head back up with aluminium., then drill it back to correct size.