how to tell ZC from SI

How do you tell the difference from a ZC and an Si engine??
the block of my new motor has ZC printed on it with some numbers and whatnot.

if it has zc on it is a ZC

are they imprinted in the steel. or just written on the head? If its imprinted and says ZC, then its a ZC, and i'm pretty sure an Si engine would come as a D series

its printed in the steel. thx for the help.

Also, ZC is DOHC and Si is SOHC

well...there is an SOHC ZC as well...

:werd: My car originally came with an Si motor which was the d16a6 and when that blew I replaced it with the SOHC ZC which is almost the same motor, but supposably has like 10hp more.

I have a SOHC ZC. or could it be a ZC block with Si Head?

never got the point in zc, not enough of a power gain for the money/trouble

never got the point in zc, not enough of a power gain for the money/trouble

More torque?

Only reason I got a sohc zc was because my motor blew and we were going to get an a6 but we found a sohc zc for cheaper...thats why I got one. Also it could be a hell of a step up if you have a hf crx or somethin.

yeah, zc has quiet a following though.