Engine Valve Loose and Shaky: Please help

[arwynkumardjokovic]

hi guys please help!

After removing the engine head,i realised one of the valve is shaky.Meaning even after tightening it,it has a little freeplay...and this can cause lost of compression and kncking...my mechanic told me that the head needs to be changed...Is there any other way?

I hav a whataspp video in my handphone but dunno how to upload liao..

thx guys

 

[dking91]

Not very clear how the valve loose..it still loose even with valve spring on? Valve seat problem?

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[vr2turbo]

Yup, if loose will make louder noise (tappets) but valve springs should hold them in place for compression......

 

[^pomen_GTR^]

need to change valve guide...

that could becomes worst when valve floating and snapped....in the end major overhauls including replacing piston and conrod and bearings maybe

 

[dking91]

Sifus alrdy answered the question...what ur pomen said true so btter change head...cheaper then changing valve seat or send to engineering see if can just repair the valve seat

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[Izso]

Sifus alrdy answered the question...what ur pomen said true so btter change head...cheaper then changing valve seat or send to engineering see if can just repair the valve seat

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I guess it sorta depends on what sort of head this is. If it's super stock then changing a newer one (halfcut) would cost the same as sending to a machine shop to fix the seat. But if it's already ported and polished, it's probably more worthwhile machining it.