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Author: Subject: zetec turbo
mcramsay

posted on 29/8/12 at 06:52 PM Reply With Quote
zetec turbo

hey guys, i posted up on the wanted section for a t3 turbo for a zetec turbo conversion im looking to do over the winter, however im not having much luck with a turbo for my budget at the moment, so i wanted to ask a bit of advice

basicially this is what i want to achieve

i want to convert my 2.0 blacktop to run with a turbo to produce 240 BHP. im picking this figure as i want to keep the engine internals standard (all i will be doing to the engine is fitting a decompression plate) im also going to be having a max boost of 8PSI, i believe the standard zetec internals will be able to handle this (please correct me if you think that is wrong).

obviously the turbo to go for is the Garrett t3, however these are quite hard to find for my budget, i would really like to find a turbo for under £100, as i trying to do the install on a tight budget, firstly there seem to be a few of these kind of "fake" looking turbos on ebay:

T3/T4 Turbocharger Turbo A/R .50 27PSI T04E | eBay

im guessing these are going to be cheap chinese rubbish and i should stay away?

what i really wanted to know what alternative turbos there are out there that i could use, and pick up a second hand one cheaply off ebay, ive seen quite a few GT17's from 2.0 SAABs but im not sure if these would be suitable, then again there is the k03 turbo from the 1.8T golfs,

at the end of the day i want a cheap turbo, (if i can get it cheap because it needs a rebuild then even better, im a mechanical fitter on a nuclear powerstation and often have to rebuild pumps on a slightly larger scale) that will give me the power that i want, any body got any ideas of suitable turbo candidates?

im not planning to do the install until the winter, but i cant get the exahust manifold or anything done without first having the turbo so i can work out where everything is going to go!

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daniel mason

posted on 29/8/12 at 07:16 PM Reply With Quote
is there a particular reason for wanting a zetec turbo? just curious as you could probably buy a nissan 200sx engine and box for less than you could sell the zetec for! that would be sufficient power wise. or a saab turbo lump is dirt cheap and has huge potential. 350bhp plus, and im sure they mate to vauxhall rwd box






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mcramsay

posted on 29/8/12 at 07:20 PM Reply With Quote
I have a brand new zetec fitted in my gbsc zero, on jenvey throttle bodies with an emerald ecu, I'm not looking for a major engine swap project, I would like to work with what I've got
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six mad

posted on 29/8/12 at 08:07 PM Reply With Quote
Hello

I,m currently in the same boat although I have most of the parts other than a decompression plate.

From what i have researched standard internals are ok up to 250bhp.

The t3 apparently may be a slow to spool a T25 is better suited something from a 200sx although that said I am
going to try the turbo i have, its series 2 RST unit, although i believe its a hybrid of some sort.


Any way here is a link to a turbo in your budget.


FORD ESCORT RS TURBO SERIES 1 S1 TURBO UNIT AND MANIFOLD | eBay

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mcramsay

posted on 29/8/12 at 08:17 PM Reply With Quote
Thanks I will keep an eye on that one, what's the max boost you can run with standard internals? Spool time isn't a great issue as I want to use the emerald ecu to control an electronic boost controller to give gear driven boost, as in no boost in 1st gear so that I can get off the line and then the boost coming in part way through 2nd and full boost in 3rd and 4th.... I think I can do that unless I have completley misunderstood the emerald ecu manual
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austin man

posted on 29/8/12 at 08:25 PM Reply With Quote
I think Coozer had some bits for sale





Life is like a bowl of fruit, funny how all the weird looking ones are left alone

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six mad

posted on 29/8/12 at 08:29 PM Reply With Quote
As a guide 11-12 psi depending on what compression ratio you end up with, i have read some people up to 15psi
but a suspect the engine is stressed running this amount of boost.

I guess the mapper will govern boost level subject to any det.

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mcramsay

posted on 29/8/12 at 08:37 PM Reply With Quote
Fair enough, haha time to bite the bullet and spend money on a turbo
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madteg

posted on 29/8/12 at 09:14 PM Reply With Quote
RS turbo manifold
subaru td04 turbo because you can turn the housings around to get what you want and it spins up quick
2.0mm decompretion plate
adaptor plate for turbo
bosch green injectors
Have a look at my Archive
If i can help in any way just U2U me. Kev.

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mark chandler

posted on 29/8/12 at 09:36 PM Reply With Quote
Have a look here

http://locostbuilders.co.uk/viewthread.php?tid=68802

I watched Tom drive up the road with this, it kept spinning the wheels as boost cut in

Regards Mark

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froggy

posted on 29/8/12 at 10:05 PM Reply With Quote
you cant get cheaper injectors than the vxr astra ones which come with a rail and reg for £117 annd are 440cc





[IMG]http://i144.photobucket.com/albums/r187/froggy_0[IMG]

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madteg

posted on 30/8/12 at 09:39 AM Reply With Quote
Got my injecters from scrappie of a 760 turbo volvo for 8 pounds.
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froggy

posted on 30/8/12 at 10:25 AM Reply With Quote
Saab reds or the Volvo ones are ideal for a low power turbo , I meant that the vxr are a bargain compared to the green giant 440,s





[IMG]http://i144.photobucket.com/albums/r187/froggy_0[IMG]

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mcramsay

posted on 30/8/12 at 04:41 PM Reply With Quote
Managed to get my hands on a Subaru impreza wrx td04 turbo last night for 50 quid, and it will easily give me the power I'm looking for at the correct boost. Once that arrives I can start modding the standard zetec exhaust manifold to take the turbo! Once that's done I need to manufacture some kind of plate and spacer so I can bolt my Nissan gtir plenum chamber on to the jenvey throttle bodies! So far I've spent 110 on two major components! My budget is looking good! Once I get the turbo it will be having a full strip, clean and rebuild with new seals, bearings and thrust ring.
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six mad

posted on 30/8/12 at 06:27 PM Reply With Quote
quote:
Originally posted by madteg
RS turbo manifold
subaru td04 turbo because you can turn the housings around to get what you want and it spins up quick
2.0mm decompretion plate
adaptor plate for turbo
bosch green injectors
Have a look at my Archive
If i can help in any way just U2U me. Kev.



Kev


Will the td04 fit straight on to the RST manifold?

I have looked at your inter cooler location, do you get sufficient air flow on the scuttle?

I,m also looking to source injectors which are best/cheapest for up to 250bhp?

One last question did you use a 2mm de compression plate with a metal gasket either side?

Thanks John

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six mad

posted on 30/8/12 at 06:29 PM Reply With Quote
mcramsay sorry to hi jack your thread btw, I am am a NOObie
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BaileyPerformance

posted on 30/8/12 at 08:07 PM Reply With Quote
quote:
Originally posted by madteg
RS turbo manifold
subaru td04 turbo because you can turn the housings around to get what you want and it spins up quick
2.0mm decompretion plate
adaptor plate for turbo
bosch green injectors
Have a look at my Archive
If i can help in any way just U2U me. Kev.


You do not need a decomp plate - this is a bodge and is not required anyway upto 16PSI on 98RON.

For example the Mk1 focus RS used 9.5/1CR and 14PSI as stock.

The stock engine will take 250BHP all day without a problem.

You do need to be careful when mapping it, if you need anymore info please contact us.

www.baileyperformance.co.uk

NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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six mad

posted on 30/8/12 at 08:37 PM Reply With Quote
quote:
Originally posted by BaileyPerformance
quote:
Originally posted by madteg
RS turbo manifold
subaru td04 turbo because you can turn the housings around to get what you want and it spins up quick
2.0mm decompretion plate
adaptor plate for turbo
bosch green injectors
Have a look at my Archive
If i can help in any way just U2U me. Kev.


You do not need a decomp plate - this is a bodge and is not required anyway upto 16PSI on 98RON.

For example the Mk1 focus RS used 9.5/1CR and 14PSI as stock.

The stock engine will take 250BHP all day without a problem.

You do need to be careful when mapping it, if you need anymore info please contact us.

www.baileyperformance.co.uk


Interesting, no de compression plate!

I am currently running a megasquirt ecu custom intake with a st 170 throttle body
and looking for injectors will 350cc or 380cc be up to the job?

After i have purchased my injectors i am nearly there how much is a mapping session and wher are you based?

Thanks John

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BaileyPerformance

posted on 30/8/12 at 09:20 PM Reply With Quote
Hi,

Yep - we have used stock CR all our zetec turbos without a problem. We are building a zetec now for a supercharge autograss car with 10/1 CR, this engine will run 20PSI and make 400+BHP (full race)

380cc injectors are fine for 250BHP (but dont be tempted to use old cosworth ones, these are poor) Bosch gen3 injectors are the way to go. Saab / Rover tomcat turbo injectors work well also.

We are in Shropshire, have a look at our website www.baileyperformance.co.uk

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mcramsay

posted on 30/8/12 at 09:22 PM Reply With Quote
thats really interesting about the decompression plate, can you explain a bit further why it is not needed? most people seem to use it, im guessing by lowering the compression you decrease the point at which detonation occurs, so rather than lowering the compression if you use a higher octane fuel and having the timing mapped correctly again you will achieve the same result as a decomp plate? ie lower the point at which detonation occurs?

at the end of the day, i want a reliable and relatively unstressed engine. so 230-240 BHP is my target, and that will be more then plenty.

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BaileyPerformance

posted on 30/8/12 at 09:43 PM Reply With Quote
quote:
Originally posted by mcramsay
thats really interesting about the decompression plate, can you explain a bit further why it is not needed? most people seem to use it, im guessing by lowering the compression you decrease the point at which detonation occurs, so rather than lowering the compression if you use a higher octane fuel and having the timing mapped correctly again you will achieve the same result as a decomp plate? ie lower the point at which detonation occurs?

at the end of the day, i want a reliable and relatively unstressed engine. so 230-240 BHP is my target, and that will be more then plenty.


The decomp plate is a really crap way of lowing compression on an engine anyway, but assuming you are running the engine on 97/98 fuel and limit boost to 16PSI you will be no where near detonation at stock CR of 9.5/1.

As you say the key to it is to carefully map the timing and fuelling. Cold air is also important so a decent intercooler is required. As i said before Ford managed to do this on the Focus RS (i had one for 7 years) but the owners manual stated 97RON must be used.

We have ran 20PSI into a stock engine (just for fun, it was out development car) it made over 300BHP with no det.

Keeping the CR stock and carefully mapping the engine keeps the throttle response good, lowering the CR makes the engine lazy and MPG suffers. The old skool way of very low comp and loads of boost is a think of the past - for example Mountune cosworth YB turbo rally spec engines run at 10/1. ( a stock YB is 8.3/1!!)

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