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RST Turbo upgrade

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Old Jun 24, 2012 | 10:10 AM
  #1  
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Default RST Turbo upgrade

Hi

I have a series 2 Escort Turbo, i have done a fair bit to the engine and now i'm ready to upgrade the turbo.

Can anyone answer the following...

What PSI will a standard turbo run at before struggling?
Is there an easy upgrade or should i go to turbo specialist and have one built?

Also i am considering a straight cut gearbox but on my last trip to Burton Power the two chaps behind the counter tried to talk me out of it. Has anybody had a straight cut box? Is it that unbearable - it's a second car and mainly used for santa pod
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Old Jun 24, 2012 | 10:34 AM
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What's been done to the engine, are you still on the standard injectors?
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Old Jun 24, 2012 | 11:07 AM
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I think 18psi is the limit but have heard of people pushing past this,
Depends on what you want really alot of people are putting the mtx box or even a later box, my mate runs a straight cut box and it's the only one that's lasted years, his is a daily car
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Old Jun 24, 2012 | 03:58 PM
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Default thanks for your replies

I have been running 22 psi for about two years and not had any problems - that being said though i don't even give it full throttle.

I have a steel bottom end, "stage 3" head - larger valves and a standard cam. bigger inter-cooler and just fitted but not tested an aqua mist kit.

It is still a mfi head, and i havent changed the injectors but i am all ears for suggestions ...

As for the straight cut box - i think i am sold it sounds like it will be a good investment.

Do you know what brand of box he had?
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Old Jun 25, 2012 | 08:55 AM
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i'd bin the mfi stuff first
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Old Jun 25, 2012 | 03:44 PM
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Ok

I have found an old thread on how to change from mfi to efi and have started keeping an eye out for the bits.

Keeping in mind that i will now be going efi can i upgrade my turbo now for one that will still be compatable once i do the efi conversion?
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Old Jun 25, 2012 | 05:23 PM
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what sort of power are you aiming for?
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Old Jun 25, 2012 | 05:35 PM
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I'm not really sure - i'd like to do a sub 13.5 at santa pod.

To be honest i haven't used a my rst in about three years its just been sitting in a garage. Last time i used it i hung around with a crowd of boy racers and we all had big plans for our motors but little budgets. I do see that crowd anymore but have some cash to spend and am bored sh*tless of driving a freelander.

I would like as much power as possible but i don't want to have to rebuild every time i use it.
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Old Jun 25, 2012 | 05:52 PM
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Originally Posted by wez smith
I'm not really sure - i'd like to do a sub 13.5 at santa pod.

To be honest i haven't used a my rst in about three years its just been sitting in a garage. Last time i used it i hung around with a crowd of boy racers and we all had big plans for our motors but little budgets. I do see that crowd anymore but have some cash to spend and am bored sh*tless of driving a freelander.

I would like as much power as possible but i don't want to have to rebuild every time i use it.
I would service it before you do anything,If the petrol is from 3yrs ago then drain it,

Have you put a m.o.t on it,could be just remains now

you can't upgrade the injectors on MFI

std turbo I would say don't push it anymore than 13-14psi,do you have a chipped ECU and a uprated -31 actuator?

even with the right spec and a setup the mfi will limit you at best to around 230bhp without messing with silly 5th injectors,but that won't be on a std turbo,will need at least a stage 2 T3.

I would say if your chasing power then either efi or zetec turbo.
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Old Jun 25, 2012 | 05:54 PM
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If I were you I would go for a decent stage 3 T3, a set of 55's and some standalone management that a tuner of your choice is happy to map.

Edited to say you will probably want an EFI head too..

Last edited by Nick.W; Jun 25, 2012 at 05:55 PM.
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Old Jun 25, 2012 | 06:15 PM
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lol yeah i have started a major service.

I have taken the head off to have a look at bores etc all looks good. Drained all the oil and change of filters. There was fcukall petrol in there anyway but before i change i want to think about changing the tank for a lightweight foam filled one.

There was a bit of rust on it but i have provisionally booked it in with a refinishers for when i have completed all the work.

I do have a -31 actuator.

I think i have decided that i will be going efi and also a custom spec turbo but the bank manager will decided for sure.

SORRY FOR THE IGNORANCE but what are 55's

Cheers
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Old Jun 25, 2012 | 06:25 PM
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Originally Posted by wez smith
lol yeah i have started a major service.

I have taken the head off to have a look at bores etc all looks good. Drained all the oil and change of filters. There was fcukall petrol in there anyway but before i change i want to think about changing the tank for a lightweight foam filled one.

There was a bit of rust on it but i have provisionally booked it in with a refinishers for when i have completed all the work.

I do have a -31 actuator.

I think i have decided that i will be going efi and also a custom spec turbo but the bank manager will decided for sure.

SORRY FOR THE IGNORANCE but what are 55's

Cheers
Siemens Injectors.
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Old Jun 25, 2012 | 06:53 PM
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cheers mate - guessing i need to do the efi conversion first.
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Old Jun 25, 2012 | 08:57 PM
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If your driving a freelander at the moment just get the thing on the road. You will love it! Went from a 3i cab / auto mondeo, back to my series 1 running 180 ish brake and its the nuts!!!! 200bhp is a sensible limit for fwd anyway, unless your chasing numbers and #uarter mile times! Spend the money on suspension and brakes it will be a more all round fun car for a b road blast!
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Old Jun 26, 2012 | 05:25 PM
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Your not wrong mate - just been to look at my rst and its 3/4s rust that bad there isnt really enough to weld to ...

so i bought a new one on the way home will have a busy weekend swapping everything over but just cant wait anylonger to get it back on the road!!!
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