Rick

they dont rev.

Badman38

iTrader: (2)

with the right Components they can most zvh have just a stage three cvh head trying to feed a 2045cc engine just about helps the 1600

Rick

very true.

DazC

iTrader: (1)

The Zetec can be made to rev. But this involves "fixing the fudamental flaws" in the engine i.e stroke for one thing.

It's not that it can't be done or if you do it, the engine will give you problems, it's just that the engine is very based around ecconomy and emissions whilst being naturally aspirated.

16v heads are mainly for response due to the small diameter ports increasing gas speeds. Obviously the small ports become a restriction high up in the revs.

There are ways and means to over come most problems on most engines.

Badman38

iTrader: (2)

daz we were refering to the zvh which with a high flowing head not your normal stage three shite and different style inlet and maybe a tubular exhaust they can be made to rev.. but i see what you mean about the zetec.. to get big figures costs money

Gordon1

i would go ZT lots better

Badman38

iTrader: (2)

only reason i went down the zvh route i spent alot of money on an excellent cvh head plus a custom newman cam which i had on my 1.9cvh, far better off going full zetec

Gordon1

ZVH is a very good engine if a good bulid

Drjones

The one am looking at buying is a 1.8 bottom end with a stage 3 head and piper 285t2 cam.

So would you not go for this idea?

FULLBORE

if you've already got the head and cam mate,then your 50% commited already,i would stay 1600.The only reason i am going 16v is because i am starting from scratch.There is no point going 1800.iF your going zvh,then mate,you might as well go all the way or not at all(in this i mean 2.0 zvh). people go zvh to get the low down torque and drivability,which will be harder to get out of the 1800!!!!!!
personally i would stay away from zvh's,ive always looked at them as a bit of a bodgers market(no offence).all the agro of the SPECIAL conversion bits and pieces and work involved,you might as well stay 1600 cvh. the problem with the cvh isnt the bottom end,ITS THE HEAD AND THE OIL FLOW!!!!!!!!!!!!!!!
apparently there are a couple of well known engine builders who have said they have NEVER seen a snapped cvh standard rod! they only snap at the caps(bolts).
THE ULTIMATE engine would be a 1600cvh bottom end,with a worked Zetec 16v head.(if it could be done).
i can only imagine what it would drive like

Gordon1

the 18 zvh is very good we did one i a fiesta rst that was in performance ford in the feb 2006 it is now on gas too lol and is fine and will be for a long time yet

Drjones

its a ready made engine am looking at.

Streetracersqd;

What kind of spec was the fiesta rst???

Vampire

i was just about to ask this, can the 16v head not bolt onto the cvh bottom end?

ihave an rs turbo bottom end and a 2 litre zetec head.

Gordon1

it was running std head with accralites arps one of my T34 turbos and 15psi its only running 220bhp at the min then the gas lol

FULLBORE

i dont think it is possible to mount a 1600 bottom end to a 16v head.the oil ways wont line up for a start