right so far

rs turbo head ,loom and ecu
t3 turbo and manifold
tap a oil return in the block
st170 gasket ?

dont really understand the oil part of it and the intercoolers and stuff so all info will be good as i no not alot

Oil is to cool and lube the turbo. Intercooler is to cool the air going into the engine, making it more dense, so more goes in, resulting in more power.

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Intercoolers can vary, a good budget one is the standard cosworth gear, as many upgrade they can be had cheaply and are good for big power. The intercooler coolers the intake air before it gets to the inlet as it can get hot going through the turbo. I may still have a cossie cooler in the garage from my cancelled turbo build.

the oil return is becuase the turbo needs oil, essentially plumbing it in.

You will need a decomp plate (can't remember the exact size).

The standard RS turbo injectors will only get you so far, a set of beige injectors is the way forward.

It can be done with the standard RS turbo T2 but a T3 is recommended.

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so the feed for the turbo would come from where ? and the return is tapped into the block at the back if correct ?

plus what gasket would u use to lower the compression instead of skimming the pistons

so what feeds the intercooler and where does the return go

or is it just collecting the air like a air filter

pretty sure the cossie cooler can take 200+ bhp as that would be the power i would like hopefully

so i am best getting a rs turbo head and rebuild that for now and get the beige's and looking for a loom and ecu

how easy is it to fit the intercooler and plumb in

and the idea of the decomp plate is to make more room in the bore (as in spacing the head from the block a little more )same as getting the pistons skimmed as surely that the point of that is it makes more room in the bore aswell but on the piston if u no what i mean

both the oil feed in and out to the turbo are into the block, the out (from the block) needs to be below the normal oil level (i think) to make sure it flows well all the time. look on fiestaturbo.com they have a guide from start to finish (although that is a zetec turbo).

decomp plate does just like it says and lowers the decompression to stop it from blowing up under the pressure. if your feeling frisky with the pennies get forged pistons and rods and it will take the heat well over 350

I'm not sure about the intercooler's plumbing but they dont work like air filters but more like a radiator (in reverse), as the air from outside passes through the intercooler it transfers heat cooling its contents down, the bigger/better (because size isnt everything here ) the intercooler the more air can pass through and cool it down, giving you better o2 density (which is what we all want).

on my turbo build i'm using a 1.8L block with a 2L head and decomp plate to lower the pressure, its way more complicated than i thought and even though i budgetted high for it i guess i was like all chancillors of the exchequer i cocked it up somewhere along the way. mine like Tango's before me has gone on hold while I try and save up more monies

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Why bother doing ZVH???
I don't understand the point.
You would have to get the RST ECU remapped anyway, so you might as well do a full ZT.

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Daily isn't so Special. And it makes me sad.
Need space and time and I'll crack on with Jams si!

Catch me on Facebook as I'm rarely on here.

cvh or zetec

I cba to explain how an intercooler works, so heres a simple diagram

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Good diagram there Danny.

I was going to say you may need to do a bit more research on how a turbo engine works and then it will all make sense.

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If you dont understand how it all works and what you need, just buy a full RST setup and bolt it in

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Daily isn't so Special. And it makes me sad.
Need space and time and I'll crack on with Jams si!

Catch me on Facebook as I'm rarely on here.

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dont really want to dump the whole rs lump in as would like to stick with the zetec

so i might aswell just do it to a 2.0 and turbo that but i just thought it might of been easier using my 1.8 lump as i could use the pistons and it seemed abit easier

If you want to stick with a zetec, there is no point sticking the RST head on it lol.

Either way, all you are doing is adapting bits and bobs, so you may as well stick with the zetec engine, and go from there like you said yourself

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just thought it sounded easier to do the zvh and turbo that


would i be right in thinking i would need after market management to turbo the zetec

just want the simple route really

cause if i had to buy new pistons i would might aswell get the calibra pistons and over bore it but that would be the expensive route but if i can get away with using 1.8 pistons that would off saved me money

Well using the 1.8 pistons stands if you go ZVH or ZT its down to the strength of the pistons.

In either case a decomp plate makes sense as if you pop the bottom end another standard one can be fitted with little work.

Now a ZVH will need headwork where a ZT potentially doesn't so if you pop the head on a ZVH it will be more painful than a ZT.

As you say the management gets interesting, as you guess a ZVH is a CVH with a better bottom end so 'standard' RS turbo management can be used (but will need mapping). To go zetec turbo I don't believe the standard RS turbo ECU/loom is upto the job I think it can be hobbled on and may work but it isn't ideal.

There is no single correct answer.

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I believe the 1.8 is a very good engine to turbo as standard, on youtube i have seen escort 1.8 engines turbo'd, mainly over sees, but it would be interesting to find out whats been done in terms of work because i would imagine it wouldnt have had loads spent on the conversion, i would expect it just to have a turbo fitted and adapted, perhaps different injectors and something done with the management, basically a budget ZT conversion.

Im interested to find out myself just out of knowledge how they do it just to see if its different to a normal 2.0 zetec turbo - which guides are out there for. I might even make my 1.6 zetec a zetec turbo engine for a project and see how well it goes lol.

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best guide for budget 1.8 zt was turbo.me.uk which has closed now.

All in all its a simple mod, you just need to do it correctly.

I know it all off the top of my head and Ive probably typed out the list 20 times on the forum so I'm not doing it again

Aftermarket management will be needed, but I know that the RST ecu has been used on a ZT before... but the user of that mapped cars himself so I suppose he had the time to make it work.

Cheapest, megasquirt.. but hardly anywhere maps them... you could map yourself but mapping a turbo engine is a big risk IMO

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Daily isn't so Special. And it makes me sad.
Need space and time and I'll crack on with Jams si!

Catch me on Facebook as I'm rarely on here.

Mapping megasquirt and megajolt for that matter is the easiest thing to do in the world. There is even a function on the software which maps it for you (to values which it thinks it should be), all you do it take the car for a drive, 10mins or so, all through the rev range, all different types of load, basically a general drive, the software then creates a map for you based on that drive, the values its seen and puts it into the perameters of what it thinks it should be for best result - the ideal air/fuel ratio; 14.7:1, you then use it, and go from there, it will either then adjust it again for you if its out or you can change it yourself, do it while your driving along or back at home, then load that map up and keep playing with it until its right.

Idealy a rolling road is good for this as it simulates driving, but it can be done on the roads.

I have mapped many many kit cars with zetec engines and pinto engines. Megajolt using carbs, and megasquirt using throttle bodies. As I say its piss easy, its just the fine tuning which takes the time.

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I want to start collecting parts... hmmmmmmm

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