[TR] [6pack] decking

[Robert Lang]

On Fri, 22 Feb 2008, j randolph sandner wrote:

> morning vance,
> to the uninitiated in engine machining, what is 'decking'?

decking is the process of cutting the BLOCK to optimize the combustion 
chamber volume. In short, you cut the block down so the block to the 
top of the piston at TDC is reduced / eliminated. There are instances in 
the extreme where decking can make the pistons stand clear of the block, 
but we don't want that. On a TR6, using the Kastner suggestions, you 
reduce enough unswept area to gain about .3 of a compression ratio (e.g. a 
head milled to 10.0:1 becomes 10.3:1 when the block is decked.

> TIA
> randy

regards,
rml
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