[DeTomaso] Compression ratio

[JDeRyke at aol.com]

Practically speaking, no. Disassembly and actual volume measurement is the 
only way to be anywhere near accurate. 

But compression ratio is only a number maybe good for bragging rights; the 
engine doesn't know or care, so why worry? If it runs and doesn't rattle on 
the crap-gas we're being sold today, you're lucky. If you think you left 
some power on the table when you rebuilt last time, after your Income tax 
refund arrives you can think of a top-end rebuild and check it the right way 
then. 
While you're waiting, make yourself a transparent combustion-chamber cap 
and buy a 100-cc plastic burette. The average closed chamber Cleveland (iron 
or alunimum) will need at least 64-68cc so buying a 50-cc burette means 
you'll need to refill once during the check, introducing more errors. And a 
plastic burette will live awhile in the average car owner's garage, unlike 
fragile glass ones! I've busted at least 3 glass ones just moving things around my 
1000-sq. ft shop.
Good luck- J Deryke