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To maintain proper rocker assembly geometry it is imperative that the distance from the camshaft to the top surface of the cylinder head be kept as near as possible to original. You'll note that if the block or cylinder head have been surfaced the pushrods now effectively rise further even in the "down" position. This does not give you more lift, in fact in severe cases it will reduce lift, and in any case it will increase wear and noise. The easy and only solution to this dilemma is to raise the rocker assembly by shimming the rocker pedestals. These shims are .090" thick and can be stacked to the height necessary. Sold individually. Will fit all A series motors.
Classic Austin Mini Cylinder Head Rocker Shaft Pedestal Shim .090 Thick

Classic Austin Mini Cylinder Head Rocker Shaft Pedestal Shim .090 Thick

Classic Austin Mini Cylinder Head Rocker Shaft Pedestal Shim .090 Thick
Part No: C-2A516
This item is not available.
Fits the following:
Classic Mini
Sprite & MG Midget
Morris Minor
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Classic Austin Mini cylinder head rocker shaft pedestal shim .051 thick
$5.68 Classic Austin Mini cylinder head rocker shaft pedestal shim .051 thick
To maintain proper rocker assembly geometry it is imperative that the distance from the camshaft to the top surface of the cylinder head be kept as near as possible to original. You'll note that if the block or cylinder head have been surfaced the pushrods now effectively rise further even in the "down" position. This does not give you more lift, in fact in severe cases it will reduce lift, and in any case it will increase wear and noise. The easy and only solution to this dilemma is to raise the rocker assembly by shimming the rocker pedestals. These shims are .090" thick and can be stacked to the height necessary. Sold individually. Will fit all A series motors.
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