Abstract:
An aluminum alloy valve lifter comprises a valve lifter body made of Al-Si (5-20%) type alloy, having silicon average grain diameter of 2 to 40 micrometers, and consisting of a cylindrical portion and a disc portion; an Fe-C type sprayed coating formed on the peripheral surface of the cylindrical portion, containing 0.1% or more of carbon and having a hardness of 300 Hv or more; a wear-resistant chip fixed on the underside of the disc portion; and an adjusting shim set on the upper side of the disc portion.
Abstract:
A valve tappet arrangement for an overhead camshaft internalcombustion engine including a tappet-setting member adapted to be inserted into an opening in the valve tappet for adjusting the effective thickness of the tappet, the tappet setting member being in the form of a self-locking pallet so that when it is fully inserted into position in the valve tappet it is locked against direct withdrawal from the valve tappet.