Mechanical Terminology Questions

[Barry]

Mark

Lots of good info here

https://www.aircooled.net/VW-Tech-Articl...ex/4449-2/

Grab a beer and read one story each night

Anyway…..

Endfloat
When the revs it moves laterally (back and forth) in the case. 
Over time it wears the case. 
The “thrust” bearing sets the majority of movement and the 3 washers under the flywheel the rest. 
It needs to be set at ~ .004”
Any more than say .008” and work is needed. 
If it is too loose the crank starts pounding the case causing real problems

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Deck height
This is the space at the top of the stroke between the top of the piston and the top of the cylinder. 
It should be ~ 1.0mm - 1.5mm
This area is added to the head chamber volume. 
This is usually around 50cc - 55cc

Outside of this deck height and you effect the piston “squish”
Whole other conversation 

Compression Ratio
This volume above over the volume at the bottom of the stoke is the “static” compression ratio

There are compression ratio calculators where you put in
Head cc
Deck height 
Crank stroke

And it does it all for you.