Small turbo to big turbo conversion
#2
right you need:
turbo
inlet manifold and throttle body
injectors
crank pulley and sensor
ecu
coil
ignition leads
dizzy
air charge sensor
water temp sensor
and while your there you might as well stick 3 bar and some greens in
turbo
inlet manifold and throttle body
injectors
crank pulley and sensor
ecu
coil
ignition leads
dizzy
air charge sensor
water temp sensor
and while your there you might as well stick 3 bar and some greens in
#5
Originally Posted by Azrael
AFAIK swapping inlet has no sense as small turbo one is better. Fitting dizzy doesn't make much sense to me either.
wether it makes sense or not that is what u need to do the easiest and cheapest conversion.
#6
Originally Posted by Azrael
AFAIK swapping inlet has no sense as small turbo one is better. Fitting dizzy doesn't make much sense to me either.
#7
slightly obtuse i realise - but there is always the route of buying a big turbo in the first place ? - they're cheap enough! but the more that get converted to big turbo the rarer the damll ones are becoming!! so the value must go up!!! lol i hope so anyway
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#9
Originally Posted by Glenn5
isnt the exhaust manifold different aswell i remember a friend having trouble when he converted his
#11
Only if your going into 400+bhp you should change the exhaust manifold to a 2wd one. Keep the small turbo inlet as it IS the best one!!
Ive priced this conversion up quite a few times, you could do it for about £1300 with used parts, but I wouldnt go down that route.
Ive priced this conversion up quite a few times, you could do it for about £1300 with used parts, but I wouldnt go down that route.
#13
Originally Posted by Ryan_Belfast
Only if your going into 400+bhp you should change the exhaust manifold to a 2wd one. Keep the small turbo inlet as it IS the best one!!
Ive priced this conversion up quite a few times, you could do it for about £1300 with used parts, but I wouldnt go down that route.
Ive priced this conversion up quite a few times, you could do it for about £1300 with used parts, but I wouldnt go down that route.
#14
Originally Posted by Power Engineering
worth considering changing to a aftermarket managment system, lot less agro & keep most of the origional parts.
#15
Originally Posted by wimwerf
Originally Posted by Power Engineering
worth considering changing to a aftermarket managment system, lot less agro & keep most of the origional parts.
Ehhh theres a bit more to it than that winwerf.
#16
Im mid way through mine now,The exhaust manifold is definitely different as the hole where the turbo bolts to is smaller. You can use the downpipe off a small turbo as its the same. When you price it up an after market system is actually cheaper and brand new rather than using all second hand bits which still fetch a lot of money. I have been quoted approximately a grand for omex ecu and adapter plug which uses most of the original sensors and loom. I will need a differnt map sensor and have purchsed a set of focus rs injectors which i have been told can take a focus to near 380bhp. Hope this helps, either way once u have ditched eeciv ecu its gonna be quicker
#17
Originally Posted by tim10_10
Im mid way through mine now,The exhaust manifold is definitely different as the hole where the turbo bolts to is smaller. You can use the downpipe off a small turbo as its the same. When you price it up an after market system is actually cheaper and brand new rather than using all second hand bits which still fetch a lot of money. I have been quoted approximately a grand for omex ecu and adapter plug which uses most of the original sensors and loom. I will need a differnt map sensor and have purchsed a set of focus rs injectors which i have been told can take a focus to near 380bhp. Hope this helps, either way once u have ditched eeciv ecu its gonna be quicker
#18
I've also priced this conversion using an after market ECU as I couldn't see the point, in my view, of taking the retrograde step of fitting a distributor and was is an old ECU by todays standards. Much better to keep the coil packs.
For most of the ECU's I looked at they used the existing Loom and only required one sensor to be changed. Then it's only your choice of injectors, turbo, head gasket and setup to be paid for.
My personal choice was between the Altronic, which required an interface loom between its self and the cars loom and the EECIV version of the SCS ECU which is a straight plug in.
I haven't done it yet as the car still scares me (I am 51 after all) and I started building a xpack which now takes all my spare cash!
For most of the ECU's I looked at they used the existing Loom and only required one sensor to be changed. Then it's only your choice of injectors, turbo, head gasket and setup to be paid for.
My personal choice was between the Altronic, which required an interface loom between its self and the cars loom and the EECIV version of the SCS ECU which is a straight plug in.
I haven't done it yet as the car still scares me (I am 51 after all) and I started building a xpack which now takes all my spare cash!
#19
Originally Posted by Ryan_Belfast
Originally Posted by wimwerf
Originally Posted by Power Engineering
worth considering changing to a aftermarket managment system, lot less agro & keep most of the origional parts.
Ehhh theres a bit more to it than that winwerf.
we done the managment conversion on a small turbo a few weeks back, the managment conversion & mapping was about £2000 + injectors & a few sensors, the guy kept it on the T28 for now, when he has a bit more cash he is going to change the turbo aswell, it will need a quick remap when the big turbo is fitted, but it will still keep it under the £4000 he was qoated for a marelli system & T34.
#20
Ive got a small turbo converted to t34, only problem i have got is the rev counter jumps and skips i ve heard this is something to do with the change of loom ?
can anyone help ?
can anyone help ?
#23
Originally Posted by steanosport
Ive got a small turbo converted to t34, only problem i have got is the rev counter jumps and skips i ve heard this is something to do with the change of loom ?
can anyone help ?
can anyone help ?
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