Thanks, would really be interested to confirm who actually supplies Rotax their
OE hydraulic lifters.
The wear pattern upon the camshaft is indicating correctly on all lobes. So I am
placing the root of all issue upon the tight bore clearance only and not the
lifter unit itself.
Need to have a custom sized ream ground up to reset the bore clearances.
There is one guy here in Australia currently building a big bore 912ULS on a
TBO'd
2015 production engine base. The camshaft has been reground and nitrated and
Johnson HT-900 lifters fitted.
Good service dodge on removing valve caps to see if pushrods spin. It will be
messy
though :)
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http://forums.matronics.com/viewtopic.php?p=511404#511404
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