rs turbo mart

just wanted anyones views on weather i should do a 2.1zvh or a naughty 1600 its to go in my escort rs s2 i know how to build one of these but dont know if anyone might put me on a better route as looking for 250-270 bhp. im going to be using mfi for now and wanted to know if my standard turbo will work????? any info most appreciated

Turbocabbie

I would never personally build a ZVH as I fail to see the point of removing a perfectly good Zetec Head to replace it with a CVH head that requires a great deal of work to flow as much as the standard Zetec head which you take off, This is without mentioning costs involved with the block to make the ZVH work.
Most people of this forum with high powered ZVH's would do a Zetec if building again

CVH or Zetec are the only options imho.

I also personally would never attempt to look for 250-270 bhp on MFI as I personally believe it is the upper limit of its capability's and as such you will probably need a fifth injector kit.
I would personally look at changing the management for something that is mappable to your specification if you are looking for this kind of power. With management change, a better turbo, ported head, cam with a GRS intercooler your bang on the money imho

give Jano a shout at oddkiddcreations.co.uk for advice he lives and breathes FWD Escorts and is very helpfull

maxrs16

Exactly what i would of said.

project rs

the big problem is money. to get that sort of power your going to need steel rods(175 a piece), forged pistons(600) depending on spec, then there's the head all singing and dancing 500-700, definately a 5 injector but should go mappable for that power (300 for 5th, 1000 for mappable) plus front mount intercooler and chip if you haven't already got them plus all machining and labour costs equals a big hole. for less money you could source a old black top order bits from states to turbo it (currently round 600 for steel rods and pistons) then get all machined and built for 300 so round a grand for bare engine, next throw the mappable stuff on which your going to need either way so i'd get that done first while you decide which way to go. also depends on whether your a purist or not. personnally i.m torn at moment as this is my dilemma one side says just go zetec but i know if i go that way soon it'll be more power and bigger turbo's gearboxes and it'll spiral so soon i'll have spent even more but probably get no more buzz as if i had 250 bhp of good old useable cvh, maybe just toss a coin and see what the lap of the gods brings me.

Turbocabbie

Ive seen many CVH's doing around 250BHP without steel rods and forged pistons its ideal but its not required if the engine is good.
Simply using a better turbo, ported head, cam GRS front mount and a management system capable of being mapped accurately to the amount of boost you need to run and you can... I've done it myself with a standard block

The big issue I have with the ZVH is even though you can get all the machining done and the engine built for reasonable money, this work and costs are required to fit an inferior head to the one which came with the engine... I just do not understand this as your in effect paying to make the engine worse, its false economy
The only defence for a ZVH is that you want the engine bay to look relatively standard.

At the end of the day imho no matter what engine is being used I would not wish to be on MFI with fifth injectors at that power level and would want a management change just to make the car drivable and responsive.

Just my opinion

Turbocabbie

Ask the guys running big power ZVH's if they would do another one or a full Zetec

olek

an erst should have a 1600cvh! it's just ment to be with the car.

my old esrt made a reliable 250bhp without steel rods, forged pistons and balanced bottom end.

used it for 2 year without the engine letting me down.

the problem with so much power in a fwd erst is the traction, you should really upgrade the front suspension.

Bomber

I would not do a full Zetec Turbo - totally happy with a ZVH.

Badman38

iTrader: (2)

If i built another engine i would go 16v but thats because i would be looking at 500+ bhp and a 8v not going to produce that sort of power... but lets get one thing clear a standard zetec head does not flow as much air as a ported big valve cvh head a 2.0L zetec with a proven standard head would struggle to hit 300 bhp.. i have failed to see one produce the goods.

sean

Turbocabbie

I totally agree, but this is added expenditure and if you were going to get a head ported... which one would you want to start with.

I do not believe that a standard CVH head flows as much as a standard Zetec head and if your going to port one... removing the zetec head i believe is not cost effective.

The only thing that can justify a ZVH in my eyes is if you have a damn exceptional 8v head before you even consider a ZVH or Zetec, otherwise i would always take the zetec

boothy

iTrader: (14)

im looking to get around 200 230 with my engine ive got a turbosystems chip stage 2 turbo going to fit a fifth injector and hopefully i can get sumthing around this figure and leave it on the standard botom end will this be ok or do i need to do any thing else????any advice

project rs

boothy you would be struggling to get much over 200 if you reach that on what you.ve said. your going to need a fmic, some type of ported head/polished head and really swapping to efi so you can fuel it properly. lets face it for a fifth injector your going to pay over 350 them getting it all mapped and if you then want more bhp you'll struggle so for 750 at jamsport you get there gotech stuff all in and mapped plus you can gain valuable advice as to what you might need to improve your bhp in future of them

Badman38

iTrader: (2)

the reason i went down the zvh route was due to my expensive cvh head, A standard cvh head does not flows as much as a standard zetec head if you want to retain the original look but with a stronger cheaper bottom then zetec it has to be, a zetec bottom end capable of 500bhp with eagle steel rods and je pistons can be bought for less then £500 so in some cases its more cost effective to go zetec.
a zvh wont work properly and produce the goods without a cvh head that moves a serious amount of air..
my zvh should see a genuine 430bhp now i have rectifed most of the problems i had with my first zvh build but i would advise anyone to make a zvh work costs so much money the best way if you want huge power 16v zetec all the way..

sean

Bomber

Turboboss - what gearbox are you using?

Badman38

iTrader: (2)

cts stage two plus and a newly fitted 3.6 final drive, i just had the gearbox freshen up with new bearings hubs etc nothing was wrong with the box but due to the bc box weakness i have it looked at regularly before problems arise.. putting 400fbt through the box just wears the internals out... mtx75 is the way forward but i have spent £700 on a set of uprated shafts so i am not going to put these to waste. whats your spec engine bay looks impressive, my spec changed since last year daddy thrash

sean

Bomber

I'm not sure whether the MTX conversion is doable in a Mk1 Fiesta - the box is bigger in every way compared to a BC/IB5. I'd like a cable linkage to get rid of that ancient rod linkage, but I think a Stage 2 + BC box would be the easiest route without cutting anymore of the chasis about.

Im running a 2.1ZVH - last engine blew up when Field Motorsport were mapping it. So it came out for some proper loving in the form of Nikasil liners, XWorks inlet, Tubular manifold and new Turbo.

It was dyno'd and run-in on a base map at 380bhp with 420ft lbs torque on 26psi.

I'm just trying to sort the screamer pipe and new downpipe at the moment then I can fire her up, put some miles on it and get it along for a final map.