fiestaturbo.com

[dobo]

hi all,im new here so i dont know if this is the right place but here it goes. i have a xr2i 8v cvh lump in my mk3 van,but looking for a bit more power,im already looking out for a 2.0l zetec bottom end (zvh?) and a 4-1 manifold.I have a full system exhaust and a k&n,anything else i can do to gain the bhp, got a mate of mine in a french gti,and im fed-up with him goin past me

any help will be very welcome

[SiZT]

try and get a new cam kit and try a bit of home brewed head porting

[Chris 2i]

chip and cam would be next after the exhaust and air filter

[dobo]

oh sounds like the cam is the one to go for

is the bottom end easy to fit? do i get cams for a xr2i or 2.0l??

[Oranoco]

To be honest if you're going to fit the 2 litre Zetec bottom end you might as well fit the head as well and have a full 2 litre Zetec conversion. The key to getting a ZVH to deliver the goods is getting the head right. Saddly most people don't bother due to the costs.

I would suggest either tuning the existing CVH motor or ideally perform the Zetec conversion in full with all of its 16 valves and both camshafts

[hb69]

ideally perform the Zetec conversion in full with all of its 16 valves and both camshafts

best move i ever made, with reguards to tuning my old 8v 2i

[Xtreem]

If i was you and u are not making the 2l conversion. Here is what i might do for the CVH engine.

Skinn the head 1mm
Bigger inletvalves, max 43mm if i remember right exhaust doesnt need anything
Peugeot 205, 405 1.6 XU engine valve springs are good, dont take too stiff in general
Mechanical valve lifters, then you can rev it over 7kRPM whit no problem
New cam, but dont be too greedy by the degrees + this is a must, adjustable camwheel or what ever it is in english
a bit bigger injectors and rized petrol pressure
lightened flyweel, 1kg off here is near same as removed 10kg from the car.
and some own head porting, REMEMBER its not the looks or how much you take metal off from it, its the shape that matters!

And after that you need to get that power to ground. And its not all about the power - but driving properties.

[dobo]

yeh i have been thinking of doing the full 2.0l zetec,
would i need to change the loom?? and any mounts or is it the same?
and get a 2.0l ecu & lump,then run it off the xr2i gearbox??

[hb69]

yeh i have been thinking of doing the full 2.0l zetec,
would i need to change the loom?? yes, you will need to change the engine loom
and any mounts or is it the same? you will need to drill a new hole for the engine mount
and get a 2.0l ecu & lump,then run it off the xr2i gearbox??yes, i used the cvh gearbox on my 2.0 without any issues

[dobo]

that simple!

can i use a 1.4 16v loom out of a si,a mate of mine has stripped and sold bit but left the loom?

is there a list guide on how to do the zetec conversion?? i dont want to keep bugging you lot with a load of questions

[hb69]

that simple!

can i use a 1.4 16v loom out of a si,a mate of mine has stripped and sold bit but left the loom? no that wiring loom wont work unfortunately, if its a mk3 si it will be an 8v, and if its a mk4 si it will be a 16v but i havent heard of anyone using the loom from one of them

is there a list guide on how to do the zetec conversion?? i dont want to keep bugging you lot with a load of questions yes there is, http://www.fiestaturbo.com/forums/1-6-8v-cvh-2-0-16v-zetec-engine-conversion-new-06-04-07-vt92943/im happy to tell you all i know about the conversion if you find any bits you dont understand in the guide, im not that clued up on the wiring aspect though

[dobo]

lol thanks alot mate

[dobo]

my 2.0l bottom end came today at work,WHOOOO

someone said about its not worth doing the zvh because the head needs upgrades??

what needs doing,port & polish??

i think im going with the zvh for now

[hb69]

my 2.0l bottom end came today at work,WHOOOO

someone said about its not worth doing the zvh because the head needs upgrades??

what needs doing,port & polish??

i think im going with the zvh for now

Why would you go for a zvh? who is fitting the cvh head to the zetec bottom end?

it really isnt worth it over a full 2.0 conversion.

[Oranoco]

my 2.0l bottom end came today at work,WHOOOO

someone said about its not worth doing the zvh because the head needs upgrades??

what needs doing,port & polish??

i think im going with the zvh for now

The problem is getting the head to flow correctly for the ZVH which is far more involved than a quick port and polish. The best man to speak to is Ian Howell at Area Six but make sure your wallet is heathy. You can build the engine without doing the headwork but expect power to go flat after about 5krpm.

[dobo]

a mate of mine who is a big cossie nut,said he will fit it n time it up,up you guys are putting me off the idea now,

[FlashXR2i]

a mate of mine who is a big cossie nut,said he will fit it n time it up,up you guys are putting me off the idea now,

Build a proper ZVH is far more complicated then just drop in 2,0 Zetec.

[dobo]

ok? shall i tune up the cvh first ,(cam chip ect) and if im still not happy then go for the zetec

what sort of power al i looking at if i chip,cam,remap,manifold back ashley exhaust,piper inclosed filter???

130bhp?

[Oranoco]

My old XR2i made a smidge over 130bhp with:

Ashley 4-2-1 manifold
Custom exhaust system (not crappy PowerFlow)
Reworked head (polished ported etc)
Piper cam and vernier
Superchip
K&N 57i
Fuel pump (not needed but added as original failed)

Think there was a couple of other bits but it was a few years ago now.

[Mizka]

Maybe you should forget those induction kits and think about how to get more revs out of the engine. Read again what "Xtreem" wrote ^^ earlyer. Hydraulic lifters are the main restriction (valves goes crazy after 6500 rpm) and stock ignition system puts the curtain down at same rpm. After that you should figure out how to make the engine breath better (inlet/outlet, cam etc).

Dont't take it personally, but u UK-guys seem to focus too much on those nonsense "stage this and that" and forget the basics of 4-stroke engine tuning.