Zvh vs zetec turbs

[Marts]

yea, full front (airtec)

If you were logged in, you wouldn't be seeing this ad! Register your free account today, or log in if you already have an account.

[jonny s2]

Originally Posted by oranoco

keep the cvh or go full zetec mate. The normal 'put together on a driveway' zvh are so over rated. You need to spend money on them as the cvh cylinder head can't flow adequetly and power and torque die at 5.5krpm. That money could be spent getting a zetec turbo going and be of nice benefit as the zetec head is a fantastic bit of kit from the factory.

Out of interest why the 1.8 and not the 2litre?

id do the same mate just cvh or full zetec not a mish mash of engines, wouldnt be much harder fitting full engine,most people put a zvh in cause they wanna use mfi management and standard inlets an exhaust manifolds,and dont want to go to the trouble of changing all this, but if you gunna do it do it properly

[Matt carter]

Originally Posted by Marts

yea, full front (airtec)

I read your thread on boost pressure. That was a bit of a debate! Is your car basically all sorted out now? Regards to the inlet i.e decent head, decent intercooler. The manifold in the middle is not allowing the head and intercooler to do their job properly. Can you see what i mean? Get the inlet sorted out so you have got a decent flow to head. If you can get hold of a series 1 inlet manifold, even better.

[Marts]

My project has taken a standstill at present due to an issue with the metering unit deciding to pack up and chuck fuel into the lower boost pipe.... so until i finally get round to collecting my replacement, everything is on hold. I will look into getting the inlet flowed and Im guessing too, the bit between the head and inlet manifold (cant recall name of it). The head, as far as im aware has had some work down to it as the holes all looked fairly larger than the last head and were very smooth on the inside... but i aint believing nothing until i get it all checked over properly.

As for my Boost Thread Yea, it did go into a little debate stylee. Whatever tho, loads of ZVH's have been created over the past, and will still in the future... Mentioned above, its a budget engine that can produce great power and gives piece of mind knowing newer parts are being used... not starting a debate here now tho guys ok, so dont shoot me down!!!

[Matt carter]

marts

Reduilding the meter unit then.

[Marts]

I got told that there's not much to the metering unit as it is. All mechanical bits are sensors and the only moveable parts etc were the plunger and flap. Mine seems to be leaking fuel from the distributor on top to the air box below.... also told of an O-Ring that sits between the two, but talking with ford, and gaining an exploded diagram shows otherwise. I think its just fooked!

[rst in breaking]

Zetec turbo for me all the way, so simple, a simple buid using c20let psistons uprated valve springs and use arp rod bolts with rs1800 inlet and keepz it simple and less involed in my opinion

[danny_boy699]

matt zetec head is good for 300bhp, all my mates have has close to 250bhp from just fiting a 1mm decomplate. i have gonna for a 2.5mm plate and dare say i could push 250bhp spot on np, zvh are good but a zetec turbo wins hands down.

zvh will run spot on runing mfi no need to go efi.

[Red16]

Originally Posted by danny_boy699

matt zetec head is good for 300bhp, all my mates have has close to 250bhp from just fiting a 1mm decomplate. i have gonna for a 2.5mm plate and dare say i could push 250bhp spot on np, zvh are good but a zetec turbo wins hands down.

zvh will run spot on runing mfi no need to go efi.

What turbo and how much boost are they running for 250bhp?

Dont suppose you have the R/R graph to show do you? not disputing it at all, just interested to see the power/torque curves

[rst in breaking]

zetec turbo for sure in my opinion, c20let pistons, small ends machined and arps along with uprated valve springs will see 300bhp (ok rods are on thier limits but same would apply for zvh)

[©hatter Box]

i never had any trouble with my old zvh over the years my next one will be much better

[Matt carter]

Originally Posted by ©hatter Box

i never had any trouble with my old zvh over the years my next one will be much better

How is the new one coming along? Havent seen an updated thread. I was under the impression you were going 2.0 16v turbo.

[©hatter Box]

mums the word lol black one is at my work about to gointo the body shop turbo is at cr turbos and grove have my engine

[jonny s2]

i supose theres good points and bad about both conversions,different ways of getting good reliable power, but dont see the point in mating two engines together,and seems to be more hassle to build,everyone has there own way and not to forget budget

[XR2]

In earlier days there sure were some good reasons to build a ZVH engine. You got reliable capacity AND you were able to use existing injection systems (ERST, FRST) that fit plug&play to the cylinder head.

Nowadays many people in search for a maximum increase of power use mappable injection systems. So why dropping 8 valves (nearly all high power engine in modern cars use 4 valves for each cylinder) AND using a head thats already antique?

That's my opinion... Use engine capacity up to 2000 ccm AND a 16V cylinder head AND a mappable injection.

[Maki]

I think I have builed good Zvh engine, but as an upgrade I will builed full zetec now.

[G2RSR]

zetec turbo's are also overrated without spending a lot of money

take a look at this graph below 2.1 zetec turbo area six ported standard valve head T38 turbo high lift cams power only just holds on after 5.5k

[crazycage]

Originally Posted by G2RSR

zetec turbo's are also overrated without spending a lot of money

take a look at this graph below 2.1 zetec turbo area six ported standard valve head T38 turbo high lift cams power only just holds on after 5.5k

are you joking ?? look how well its holding its torque.

[jonny s2]

i wouldnt say overated,you can get far more power for alot less outlay,and that gets my vote

[sexydean]

i built a zvh in my fiesta rs, standard head, piper cam and pully, standard t3 turbo, scorpion exhaust, front mount intercooler, cossie fuel pump, beige injectors, and 19psi of boost on ofac managment, pulled in 228.1 bhp with 221.4 lb torque