The M10 / M30 Cylinder head design has very short valve guides and
a heavy valve train.
This causes the guides to wear quicker than most engines. This is
most commonly seen on tired M10 engines in 2002s that seem to be
smoking out of their tail pipe, regardless if the seals were
recently replaced.
VAC offers High Performance Valve Guides for all BMW models
(both Standard and Oversized ODs).
These M10 / M30 guides are born from superior metallurgy than the
original valve guides and offer improved wear characteristics under
the stresses of high performance use.
They also work great as stock replacements and last a very long
time.
*Please be sure to check the valve guide bores in the cylinder head
prior to ordering oversized guides and include it in the box
above.
*Our Valve Guides are Priced and Sold
Individually.*
VAC Tech Tip
Make sure you replace guides on all M10 or M30 cylinder heads when
refreshing the head. Many times we have seen “rebuilt” heads from
shops that did not have guides replaced, this is shortchanging the
customer.
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