Back cutting inlet valves to improve airflow on your classic Mini cylinder head.

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This one simple modification shows a dramatic increase in airflow for a small amount of work. Increase cylinder head airflow and improve the performance of your A-series engine & Classic Mini.
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I wanna do this on my aermacchi now lol

staggerdagger
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How much does this cost mate? For a set of 12g295 valves. Cheers

GaryTillman
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Where to get that valve grinding machine ?

Shinichi
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Back cutting valves can HURT low and mid lift flow numbers on certain heads with certain seat angles and short side shapes by a lot and may only gains airflow in the mid to high lift areas from .400"on up.
Do back to back flow testing and you will see with certain head, seat and short side shapes.

bigdogsportingtonyb
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MORE PLEASE! The secret to YT success > P R O M O S M !

thomasfoley