Compression test

[Patrick Bitton <pbitton@axess.com>]

Can someone tell me how to perform a compression test? What is passable? And
if not passable does that mean the engine is worthless?

Thanks

Patrick

1970 TR-6 1rst Yellow, then Blue, Now Red
CC 52138 0(the crappiest one)
1974 TR-6 Orange
CF-13548 U