EoinXR3

Was looking to fit a 1.8zvh with ported flowed head, stage 3 turbo and mega squirt or similar.

Whats the most bhp I would get?

Cheers in advance

studabear

what injectors?

EoinXR3

Not sure as yet. Suggestions?

Robmatheson

You're being too vague mate , a bit more info will help a lot

EoinXR3

Vague's about all I got! I should have said in my first post that I'm looking for opinions on what to use, I've only had cvh's before. So I'm pretty green on the Zvh front, once I know what works I'd be getting someone to build it.

DazC

iTrader: (1)

Stick with a proper spec 1.6 CVH or build a full Zetec.

oVerboostUK

Don't write off the CVH just yet, my fiesta has a very potent engine kicking out 204bhp @ 14psi with 210 ft. Lb torque which gives me 255bhp per ton! (can safely run 21psi) but it depends on your budget, the condition of your current engine etc...

Karlos G

iTrader: (4)

Agreed, dont waste your time with a half arsed job... Either stay CVH or go full ZT.
But either Zetec bottom end will handle about 250bhp, (silver top or black top) so that will be your limit on a ZVH or ZT unless you change rods and pistons.

DazC

iTrader: (1)

And you'll hit the same brick wall with power due to the head ports by using the same head (CVH) but the Zetec based engine (the ZVH) will produce all the power lower down then run out of steam at about 5k where the CVH will want to keep going.

ZVH engines drive like a diesel. Loads of power all at once (gearbox breaking torque spikes) then they're out of steam because they suffer from a long stroke bottom end and a head designed to flow on a lower capacity engine. Some of this can be got around by using a big valve big port CVH head but you would still be better using the CVH bottom end.

EoinXR3

I just thought the Zvh would give me more reliable power being slightly more cc's than the 1.6 cvh.
What's needed to get the cvh to around the 200 mark? I don't really want it all on boost. The cvh I have had a rebuild before I got it, it's chipped and a Kent cam,adjust cam pulley, think it's around 10 psi boost.

oVerboostUK

I've got a Kent cv35k cam, vernier pulley, ported and polished head with 3 angle valves, re ground crank, Jam sport custom inlet, mahle oversized pistons, beige injectors, uprated fuel and oil pump, ofc management, superchip 195 chip, hybrid t3 turbo with custom manifold and a scorpion exhaust system, forge motorsport front mount intercooler, AH motorsport custom radiator. Reliable (touch wood) and very usable power with a strong punch from low revs all the way to the red line without much turbo lag. But you can get a cvh engine to 200bhp fairly easily tbh, I've just been over cautious and built it to be strong enough to take more power in the future.

RS-Rikki

I like the way everyone Slags zvh I got a 2.1 with lightened balanced bottom end,knife edged crank faradon rods custom Ross racing pistons my head been ported n polished gaslfowed correctly for my engine with a nice t2 cam and I love mine to bits IMO if ur putting zetec in put it in a focus or summit when I open my bonnet I still wanna see a oil leak and a old school engine this is only in my opinion though

EoinXR3

If I was going to do the Zvh can I still use the standard injectors? The mfi runs out of puff around 200bhp does it not? So to take it further I would then need to change injectors and go to a efi setup?
Also would I need a fifth injector?

zetec-Sam

iTrader: (2)

Man up! Zetec it!

EoinXR3

Straight to the point zetec-Sam!

EoinXR3

Does anyone know ashcossie who's selling the zetec turbo engine? I've sent some pm's but no response

Jamie_EscortSport

personally i wouldn't say your limited to 200 bhp on mfi but it depends how far you are willing to go, overall efi would be better as you can fine tune a lot easier but there is manya ways of pushing mfis further

EoinXR3

I thought if I could run a Zvh or a zetec turbo on mfi for a while then ungrade to efi or aftermarket setup, it would be easier to learn what's what, rather than stick every upgrade on at once and no have a clue

Jamie_EscortSport

you can run mfi on a zvh, my mates doing it until he sorts cossie management

DazC

iTrader: (1)

My suggestion...

If your engine is in good health (not knocking or smoking like a Red Arrow) speak to this man Big Will and ask him about swapping your management over onto something like Omex.

A management swap with a bigger turbo (stage 3 T3 hybrid or similar) and a decent size cooler will see you with a reliable 210-230ish horses on the 1.6 CVH. The capacity has no bearing on how reliable the engine will be so don't keep thinking that you will end up with a more reliable engine than the CVH (a ZVH is the worst of both engines!).

Get a ported big valve head on it and you could be up to 250ish but may be restricted due to the compression ratio so probably a true 230bhp. At this point you would need a set of lower compression ratio pistons and a set of H section rods inside the engine and a bigger turbo to go further as you're borderline on the strength of the rods (same goes for a Zetec and ZVH engine although the compression ratio of the Zetec is against it a lot sooner).

G2RSR

get a mental cvh head on a zvh, newman cam cosworth 4x4 turbo 260 @ 8 psi so far now

Canada1

Wow

What rpm?
2100cc engine?
Nitrous oxide?

I don't know of any well built Zetecs that make 260 HP at 8 psi.

This is certainly a CVH for the record books.

Karlos G

iTrader: (4)

I agree, no offence to the guy but it sounds like BS to me... 4x4 Turbo is a .48/60 IIRC? So 260bhp @ 8psi with the CVH's poor VE (even with a decent head)... Impossible.

RS-Rikki

Forged zvh with a ton of boost u know it's right is a rs turbo not a focus

craig rst kid

+1 I personally would stay cvh unless your going for crazy power then go forged zetec turbo or go mad and stick an frs lump and box in as theres one on ebay for 1000 at the min and they come with wrc pistons and rods as standard .The cvhs have strong little bottom ends on them though

mgtkr1

shirley you mean 18psi?.

i have that turbo and twice that boost im maybre getting 200hp, at a push i reckon. albeit on an otherwise std car.

i agree though, either zt or big power cvh. theres summat cool about a well specced cvh, until you reach traffic...

Fiesta_Jed

There is nothing wrong with a ZVH.

They just have to be spec'd correctly.

Adam.

Who told you Jamsport built the inlet? as the inlet was designed by John (the last owner) and welded together by my mate Stu, (search for SF designs on facebook)

oVerboostUK

John told me it was a Jam sport inlet... He also claimed this in the advert when selling. Hmmm, not that it bothers me either way lol.

Adam.

Ah well he may of changed it since

JoshXR2

He told me it was jamsport as well but I didn't see under the bonnet before he sold it

Karlos G

iTrader: (4)

No one is saying you can't make good power if spec'd correctly and you throw loads of money at them, but whats the point?
They are just a bad engine and really expensive, bigger displacement bottom end on an already very weak head! Throwing away a nice 16v head that flows for 400bhp as standard! lol

A ZT will do your power using standard engine parts and just the right turbo, costing maybe Ł400 (complete engine)... Your complete head must of cost about Ł1000 as my NMS CVH one did and you'll have had more port work done than me, then there's the pistons and rods so say another Ł800.... Big waste of money IMO, could of built four 350bhp capable ZT engines!

Canada1

Absolutely nothing wrong with a highly modified ZVH. 300+ hp at high boost and 6500+ rpm I believe.

But come on - who really believes a 2.1 ZVH makes 260HP at 8psi boost?
Not even 100% efficiency gets you close.
260 hp at 9500rp maybe - but what cvh head or zetec bottom end goes to 9500 rpm?"
A 2liter Honda would have a tough time getting 260 HP at 8 psi boost - and they have a head capable of 9000+ rpm air flow.

craig rst kid

+1 better to stay cvh or go ZT

Canada1

I agree totally with Karlos and Craig,

The zetec is certainly a better engine than the old cvh - and it should be - it's a much newer design.
Power is much easier to come by on the 16 valve zetec - don't even need a camshaft change.
Camshafts don't wear out, parts are the same price or lower than cvh and so on....

I like the look of a cvh in an Escort - even though it has much lower performance potential.

cheers

craig rst kid

[quote=Canada1;6016758]Wow

What rpm?
2100cc engine?
Nitrous oxide?

I don't know of any well built Zetecs that make 260 HP at 8 psi.

This is certainly a CVH for the record books.
+1 i do also find this really hard to beleive no offence intended but as said by canada 1 was there some nitrous involved ect ect not a chance on 8 psi with out something else added to the frame

G2RSR

ZVH 2.0, Head flows 143 cfm @ 10 , and no im not giving the port sizes sorry

and for the combustion chamber, you need the right shape pistons.

estimate 500 @ 25 psi with the right turbo, but the 4x4 turbo @ the min as a ported compressor housing

wedge07

i have a zvh converted bottom end 2.1 ready to take my stage 3 efi head, its got cosworth forged pistons and mondeo rods, all bits have been converted ready.
i want to use my cvh head as i wont need to change alot of stuff, all bolts roughly in place, and i aint got loadsa money left lol.
but if i ever did wanna go full zt wat prices am i looking at and what mods?

Canada1

Not sure if I believe you. A standard Zetec doesn't flow anywhere near your 143 cfm @ 10"
45mm intake valve, maybe some creative welding and raising the inlet port - I might think it could be true. But this would be a very $$$$$ cylinder head.
A very custom high duration camshaft would also be required to get the rpm well above 7500 rpm to make anywhere close to 260 HP at 8 psi.

Even so, this would be a record breaking, very high rpm ZVH, and very,very expensive.

luke19790_3

Got a dyno printout?