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Re: [T3] Compression Ratio Recommendations


<x-charset iso-8859-1>Hello-

> > just an FYI, with our 94mm SS Cs (Cima makes As, Bs, and we make a 
super
> > stroker C)
> 
> What do the A, B, and C signify?

Just to add to what John said...

What they physically refer to is the compression height of the 
piston.  That's the distance from the piston crown to the center of 
the wrist pin.  When you build a stroker (often accompanied by longer 
rods), it's preferable to decrease the compression height to keep the 
engine from getting too wide.

For super-dooper-wild applications (beyond even what John's "C" 
pistons are), we can specify pistons for our custom sets that require 
you to put on the oil ring AFTER the wrist pin!  This can put 
compression height below 1".  This is NOT recommended unless you have 
a big enough engine to actually want it, as the life of components 
like that does decrease.  Then again, for someone with a 90mm stroke 
and a 5.7" rod, you aren't looking for long life... :-).

Take care,
Shad Laws
LN Engineering
http://www.lnengineering.com

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