conor.rst

iTrader: (3)

Been thinking about building a zetec turbo at some point in the future after my car is painted and i have a few questions.

What mods need to be done to the engine ? as far as im aware you need to

make a oil feed and return for the turbo.

Change the thermo for a rst item.

Low comp pistons .

Any others.

What gear box ? is it poss to fit a 6speed.

How do you go about mounting the box

As far as im aware you can use the existing engin mount with some mods?

What about the engin loom can you use the existing loom.

What sort of spec will you need for around 350-400.

Cheers Never really looked into is so bear with me lol

studabear

manifold, either re tap head or adapter plate and use erst exh manifold

Upgraded valve springs, from whatI've read on here

chaffe

Dont re drill the head on the zetec, ive done it before, its not thickenough in places, even with helicoils, and the oil always seeps out, burning on the exhaust and running down the head. It annoyed me soo much i changed the head and bought an adaptor plate.

chaffe

plus for 400 bhp you will need an mtx75 gearbox conversion and an uprated frs clutch if you plan on using the car at all

JayCC

Thought about fitting a MK1 Focus RS engine and box? Shouldn't take much effort to get to 350 brake. If I was going to be fitting another engine, it'd be one of those.

QplateRST!

I run a mk6 escort diesel gearbox with quaife atb not had any issues with the box but it chews driveshafts and engine mounts alot running around 320bhp zetec turbo at a ruff estimate

I ran a modified escort turbo manifold with zetec exhaust flange welded to it then had it skimmed still going strong on my mates zetec turbo Orion it's never cracked and looks better than an adaptor plate or taping the head

chaffe

mk6 escort turbo diesel box? what management you running

QplateRST!

Ofab efi , got the gearbox out of a mk6 diesel van

dave_s2_rst

iTrader: (2)

Can mods make a dedicated thread on this as we all seem to be posting our individual posts up?

may help??

cheers

StephenC

What box will that be in mk6 van then? does it need same mods as MTX?

chaffe

nope its an ib5, will bolt straight in, but no better than a BC box stregth wise really. The best box is an mtx75 or some people have used the getrag six speed with good results, the bc/ib5 is a four speed box designed with around 90 bhp max in mind, fifth gear was added OUTSIDE the box, the diff bearings are weak, the first motion shaft bearing is way undersized and fails, and the gears are very small for big power. Ford put an mtx in all its big engined cars for a reason.

JesseT

It is a MTX75, practically the same as an RS2000 MTX75.

chaffe

must be a TURBO DIESEL then not a "diesel box"

StephenC

so which is it? IB5 or mtx???

chaffe

Ibx75bct

QplateRST!

The only reason i havnt changed to an mtx is because it hasnt broke yet if it does its an option i would consider but i dont like the slopy gear changes that you get with an mtx

And it would cost me around a Ł1000 to do this for no real gains other than strenght

StephenC

Qplate, it sounds intresting as weve all seen the abuse you give it and it seems to be doing very very well. Be nice if we could get a positive ID on it.

chaffe

cool, i made my own linkage for both my mtx conversions and they felt more like a quick shifted bc TBH, maybe some of the mtx conversions being sold use an inferior linkage? If it aint broke done fix it then i suppose

conor.rst

iTrader: (3)

Okay so a adpter plate for the manifold if your using a erst one

What about fitting a oil feed how do you go about that.

and with a mtx75 is it a direct fit to the block ? i take it i will need custom shafts etc ..

QplateRST!

My gearbox is an 1b5 i think it's out of a p reg non turbo escort diesel van as turbo diesels run mtx I think

I had to use a diesel one and because the starter is at the front unlike the mark 6 escort gearbox where the starter is at the rear on petrol models

I think the only reason it hasn't broke yet is because I think the shafts are breaking before the gears on my last outing at pod I ripped a vibertechnic mount in half

Also I think the main shaft bearings are bigger in mark 6 boxes so this may help

StephenC

You say that about the shafts but I dont know any escort lads that break shafts but do break gearboxes. Strange one, unless its the weight of the festa?

QplateRST!

My mates Orion zetec turbo runs the same box as my fiesta and also breaks shafts? As does my mates zetec turbo puma

massivewangers

iTrader: (1)

IB5 just has stronger bearings doesn't it? It's better than the old RST boxes, but once over 200bhp, I still think you're riding on a prayer a bit really.

MTX is the way forward. I've got one out of a MK6 TDI Escort to go on my ZT engine. Has slightly longer ratios than the RS box so shouldn't be so buzzy on the motorway. Though I'm not sure how well it will take over 300bhp, but we'll see I guess

To be honest, if you're going Zetec, I can't see the point in using CVH manifolds. And if you want over 350bhp, they definately aren't the way forward. If you want to stick to a standard inlet, just fit the cast 130PS item, but I think it will be out of its depth at the level you want to go. And there's plenty of Zetec turbo exhaust manifold options out there, think it would be money better spent myself!

XRT_si

iTrader: (2)

Oil feed fits into the rear of block and T pieces off current oil pressure switch.

Do you mean change the thermostat housing? No need, though fitting a CVH is relatively easy and does help.

Totally depends on power as to what you want to do about bottom end, but steel rods and forged pistons are basically what you need.

The Getrag 6 speed from an ST170 does fit, though clutch costs a bit unless you use a machined XE clutch. Also not as strong as MTX.

Mounting the box can be done a few ways; depends what you fabrication is like.

Engine mount needs modifying yes, there's a few guides on the internet to show you what you need to do.

Engine loom totally depends on what management you choose.

350-400bhp? Forged pistons, steel rods, ported head, decent inlet and exhaust manifolds, decent managment, something like a GT28 turbo are the basics. Plus loads extra on maching and other parts like injectors/gaskets etc... Budget around Ł2500-5000 depending on what you do yourself and what you can get cheap/secondhand or new.



As Chaffe said do NOT drill and tap manifold. It leaks oil.

The IB5 boxes have bigger and better bearings

Totally agree though, get an MTX in there. The 6-speed Getrag boxes are not as strong as the MTX and clutch options cost a fortune unless you adapt an XE clutch.

As I've said before it's really strange your car (and others)do that! Only Turboboss with the 440bhp Mk3 Fiesta ever broke shafts before, but Mk3 ones are tiny in comparison.

Liams

My old conversion on my fiesta rst consisted of,

Forged cp pistons
Steel h-section rods- standard are only good up to 280ish i believe
lightened and balanced bottom end
Rst flywheel, bolt holes had to be made slightly larger if i remember correctly
helix paddle clutch
You take oil feed from your main gallery, mine was T'd of my pressure switch union
You need to have an outlet welded on the sump for your return
I also had a breather return going to the sump (iirc this goes below oil level)
Rst exhaust manifold requires different stud pattern but as said above you need to be carefull with these as theres not alot of meat on a few of them, I know as i pulled 2 of them out!
4x4 t34 @ 20psi
If you run the standard manifold you need to block the breather off on the front of the zetec block and have one tapped in the rear of the block instead
An efi rst inlet manifold needs a adaptor plate and spacer plate to fit over the zetec head.
As it was a frst it was on ofab management already so management wise it it needed was a chip from ahmed and bigger injectors then a bigger map sensor.
I ran a stage 2+ bernie box on mine which i broke
I never had a problem with my driveshafts and the car was driven hard!!

All parts after this are really cosmetic and how far you want to go!
Mine was around the 300bhp mark (engine built by ian howell)

My engine is now 451hp and 420ftlb with big valve head, bigger turbo and so on!
Dont be fooled though, unless you want to break records or just go silly out and out power 300-350-400 are big jumps apart and do get quite undrivable.... you driven a frontwheel car with 350hp of roar ford unsmooth power lol?! Although it is fun!!

Hope this helps

QplateRST!

Here's a quick spec of my mk2 fiesta,

2.0l zetec bored to suit vauxhall z20let pistons
standard crank and rods
standard silver top zetec head except for piper valve springs
area six inlet cam
ofab mangament with msd chip
fiesta turbo efi inlet manifold with adaptor kit
fiat coupe beige injectors
cosworth 3 bar map sensor
Nissan 200sx exhaust manifold adapted for zetec flanges
Volvo t3 turbo with escos t34 front and cosworth 55 rear housing cosworth downpipe setup
demon 38 mm external wastegate
cosworth 4x4 intercooler setup
fiesta 1.1 radiator
bosch 044 fuel pump
fiesta centre fuel tank


Gearbox m6 escort van ib5 box with quaife atb diff
xr2 driveshafts
helix 4 pad high grip clutch kit
the car is fully polly bushed and on avo coilovers
tyres r888's

The car runs 26 psi and is around 320 hp at a ruff quess
and is more or less undriveable on the road if you put your foot down! cruising is also a nightmare!

Nothing special really all can be done on a budget hope this helps!

12_Second_rst

iTrader: (1)

fuck ur putting down good times for your spec mate

ive been fitting a zetec in a mk1 fiesta xr2 today

QplateRST!

I think weight plays a big part in my times aswell but you dont need massive power to run good times allthough it would help alot lol!

My mates orion is a very similar spec and runs a 12.7 1/4 mile as does the puma with a 12.8

The only thing that lets me down are engine mounts and shafts ive broke one innerwing mount to vibertechnic cradel mounts to 3 small drive shafts and one large driveshaft bent two cradles and snaped mounts off gearboxs,

In respect my times arnt that good comparing them to the vauxhallboys!!

conor.rst

iTrader: (3)

Brilliant info.

The reason behind all this is becuase my current project is going to be a good car but after spending so much money on the shell theres no way im taking it on track. so the plan is to finish my current car get it to a safe 250 and then build a zturbo for a track slag. Really just chansing figures and numbers but i would like 350-400 Cheers.

I am right in thinking you get the engine from a mondy ?

jamie rst

iTrader: (1)

Conor speak to jano about this and look on his site there is a thread just on mtx conversions and alot about zetec turbos as well

creator

My old zetec turbo engine had a drilled head for this and I never had a problem in around 9000miles driving

jonny s2

iTrader: (12)

if you dont want to use the esrst exhaust manny, you could source a focus jobbie, Qplate your car is impressive,similar spec to paul ripleys old fez, well done pal

QplateRST!

Thanks mate,

Also before I changed my valve springs to piper ones I couldn't run above a bar if boost without getting a misfire I think this was due to week valve springs causing valve bounce

chaffe

you must of been lucky

dave_s2_rst

iTrader: (2)

How about the flywheel and clutch?

Reason being i've only just put in a 4paddle on my zvh running on a BC box. Would the clutch/flywheel/housing be rendered useless on a mtx box?

I too am in the situation whereby im unsure whether to go ahead with a zetec or remain on the zvh


cheers

Rick

That only applies to rod change boxes!

phil_rs

iTrader: (3)

The cheapest option for 350-400bhp would be to source a full Focus RS mk1 running gear and go from there IMO.

jonny s2

iTrader: (12)

change the rods and your away

yeah valve springs become a real issue at about the 8 psi in most cases,i went and got some area six jobbies, dont tap the head we did this years ago and ended up scrapping the head

as for inlet, 130 spec manny is good for over 300

chaffe

yes, but then you will get some real power from a zetec

conor.rst

iTrader: (3)

Stupid question. but im looking for a silver top 2.0l from a mondeo yes ?