(March) Thunder Press.
Anyone aware of these?
It is in the Motorhead Memo section and this month he talks about some modifications to Sportster rocker "boxes" to help with rocker box noise and also oil control.
The interesting part is the addition of "sleeves / shims(?)" in the rocker box bolt holes that fills up the excess diameter of the bolt holes and reduces the play between the bolt and the rocker shaft.
Thus reducing noise from the rocker boxes of the upper end.
So here is the link to one company that makes them for twin cam engines...
http://www.rockout.biz/
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