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just buy suitable valves from head reco place, generic a/m items .

 

they the n turn and grind the valve seat angles into the valve head, only thing you need is the right dia, and length.

 

will cost just them same as buy an l-series specific item!!!

 

speak to a head place first of course, when i bent a valve in an old n42, i saw the fellow there just grab one out of a small pile and grind/shave it up to suit in a matter of 10 mins, was pretty amazed but this is what he does every day.

 

small workshop but building 750hp rb30 turbos all day, with only the stocker 2 valve heads!!!

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