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Cylinder head oil ways

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Hi, just asking for info.

Just recently bought a mk3 import with siezed pistons and chewed up exhaust Rockers, have now freed the pistons but when changing the exhaust Rockers I noticed that there are no oil drillings to the exhaust Rockers, has this been missed out at the factory.

Regards Graham

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Can we see some more pix, including ones showing surrounding parts? Quite hard to tell what we're looking at — but that drill bit looks nasty; what on earth has been going on?

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Pulled all 4 rocker spindles & appears it came from the factory with no oil ways to the exhaust spindles apart from the one with a broken drill bit.

With the use of an extra long 3mm drill bit & a bit of careful drilling, it now has the missing oil holes, tested on the bench and oil now flows to all 4 spindles.

 

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There were a lot of MK3's made under the receiver in 76 and 77 from part laying around, a rejected head was used in your bikes case without being fixed.

 



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