[Mk2] [Turbo] It is possible to obtain 300 cv/224 KW with ct26?

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st185l
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[Mk2] [Turbo] It is possible to obtain 300 cv/224 KW with ct26?

Post by st185l »

Good evening, I would like to know what power approximately it is possible to extract to one 3sgte Rev 2. With ct26, original injectors (original bomb or there would be necessary to mount walbro 255?), original cams.

I want to mount downpipe, exaust, head gasket rev 3 (on having had major thickness I think that it might increase more of 1,1bar), that better is to mount a frontal intercooler, but it would increase the turbocharger lag, I will leave the original one and hereinafter it will mount of st205 watercooler

What more might it do to come to them 300cv? Or to the approximate 270?
There are possibilities of obtaining a few cams of rev 3 without spending a lot of money?

Would it be possible to mount cams of 264 without mounting ECU?

Thank you very much and you forgive for my Englishman. I use translator of google
Al-sw20
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Re: [Mk2] [Turbo] It is possible to obtain 300 cv/224 KW with ct26?

Post by Al-sw20 »

CT26 is a terrible turbo it's dated 1980s technology. Hybrid ct26s are a waste of time as well because you have to push them to something like 1.6 or 1.7 bar of boost to get some performance from them, all the while increasing lag and the need to build the engine to withstand the cylinder pressure created by this bottleneck turbo.

If you wanted a bolt on solution, the ct20b is the best stock fuel system turbo.
androo007
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Re: [Mk2] [Turbo] It is possible to obtain 300 cv/224 KW with ct26?

Post by androo007 »

I'd be surprised if the stock injectors can do 300 without high duty
mr2magic
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Re: [Mk2] [Turbo] It is possible to obtain 300 cv/224 KW with ct26?

Post by mr2magic »

no, it's not possible to reach 300whp on stock turbo and fuelling.
st185l
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Re: [Mk2] [Turbo] It is possible to obtain 300 cv/224 KW with ct26?

Post by st185l »

And with another fuel system would it be possible?

What injectors would be needed?

I have heard that the original pump can be removed from the limitation and gives some more flow or pressure

What power can be reached with ct26 by mounting another fuel system
Al-sw20
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Re: [Mk2] [Turbo] It is possible to obtain 300 cv/224 KW with ct26?

Post by Al-sw20 »

If you need a new fuel system, you need a new ECU. Which gets very expensive, very quickly. You will never run out of fuel with the CT26 on stock fuelling. It won't flow enough. You would be lucky to see 230rwhp from a CT26.
pbmr2
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Re: [Mk2] [Turbo] It is possible to obtain 300 cv/224 KW with ct26?

Post by pbmr2 »

How much loss from the transmission is there?

Not sure he was after RWHP numbers, think he was thinking crank.
Much easier than wheel hp.
Al-sw20
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Re: [Mk2] [Turbo] It is possible to obtain 300 cv/224 KW with ct26?

Post by Al-sw20 »

pbmr2 wrote:How much loss from the transmission is there?


Pick a number from a hat, the only way to know for sure is to remove the engine and put it on an engine dyno, then compare with figure at the wheels.
alanmr2turbo
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Re: [Mk2] [Turbo] It is possible to obtain 300 cv/224 KW with ct26?

Post by alanmr2turbo »

st185l wrote:And with another fuel system would it be possible?

What injectors would be needed?

I have heard that the original pump can be removed from the limitation and gives some more flow or pressure

What power can be reached with ct26 by mounting another fuel system


Go for the REV3 fuel management which also gets rid of the AFM. The whole kit will set you back around £300-£350
gavsdavs
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Re: [Mk2] [Turbo] It is possible to obtain 300 cv/224 KW with ct26?

Post by gavsdavs »

pbmr2 wrote:How much loss from the transmission is there?

Not sure he was after RWHP numbers, think he was thinking crank.
Much easier than wheel hp.

Somewhere between 15 and 20 percent I believe.

Someone quotes 300 at the wheels - the engine is probably producing 350 at the crank

Mine is ~292 at the fly and ~245 at the wheels.

I think most of the numbers you'll see people quoting each other will be calculated crank values (because most people don't get access to an engine dyno)
androo007
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Re: [Mk2] [Turbo] It is possible to obtain 300 cv/224 KW with ct26?

Post by androo007 »

15% is the usual realistic amount. 20% for 4wd.
SonicSW20
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Re: [Mk2] [Turbo] It is possible to obtain 300 cv/224 KW with ct26?

Post by SonicSW20 »

Yeah, most dyno's seem to give the calculated flywheel figures, I guess because their customers typically want the bigger pub talk bragging rights number :roll:
st185l
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Re: [Mk2] [Turbo] It is possible to obtain 300 cv/224 KW with ct26?

Post by st185l »

alanmr2turbo wrote:
st185l wrote:And with another fuel system would it be possible?

What injectors would be needed?

I have heard that the original pump can be removed from the limitation and gives some more flow or pressure

What power can be reached with ct26 by mounting another fuel system


Go for the REV3 fuel management which also gets rid of the AFM. The whole kit will set you back around £300-£350


Thank you very much, what is this REV 3 and what brand is it?

Where could I find it?

What could you do to the engine without changing the turbo ct26?
Odin_S
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Re: [Mk2] [Turbo] It is possible to obtain 300 cv/224 KW with ct26?

Post by Odin_S »

st185l wrote:
alanmr2turbo wrote:
st185l wrote:And with another fuel system would it be possible?

What injectors would be needed?

I have heard that the original pump can be removed from the limitation and gives some more flow or pressure

What power can be reached with ct26 by mounting another fuel system


Go for the REV3 fuel management which also gets rid of the AFM. The whole kit will set you back around £300-£350


Thank you very much, what is this REV 3 and what brand is it?

Where could I find it?

What could you do to the engine without changing the turbo ct26?


Oh wow... :lol: much reading you have to do. Rev 3 means, revision 3 MR2 i.e. the face-lift model. The one with the better turbo (ct20b ) and fueling (540cc as opposed to 440cc injectors )

Going from your username it seems you're coming from a GT4? Either way, as many have said the best course of action is to wait for a CT20b turbo to come up for sale.

Any other thing before this ( providing you've got a downpipe, uprated intercooler and exhaust ) is a waste of money imo.

You'll be looking at around the 260-270 bhp fly
st185l
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Re: [Mk2] [Turbo] It is possible to obtain 300 cv/224 KW with ct26?

Post by st185l »

Sorry, I'm Spanish, I use the translator so the expression and reading is difficult for me

I understand, you mean I changed injectors, Rev 3 bomb. But for that I would also need ECUs. But to mount an ECU Rev 3 you have to modify the motor wiring REV 2 True?

Where could I get a kit like the one you tell me.

Many thanks
Al-sw20
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Re: [Mk2] [Turbo] It is possible to obtain 300 cv/224 KW with ct26?

Post by Al-sw20 »

Are you also going to change the turbo?
Odin_S
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Re: [Mk2] [Turbo] It is possible to obtain 300 cv/224 KW with ct26?

Post by Odin_S »

JimGTS will be able to tell you better because he is only of the only owners to do a rev 3 conversion.

Your changes must start with CT20b.
st185l
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Re: [Mk2] [Turbo] It is possible to obtain 300 cv/224 KW with ct26?

Post by st185l »

I would like to keep the original turbo

Still, where can I buy a ct20

Thank you
Al-sw20
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Re: [Mk2] [Turbo] It is possible to obtain 300 cv/224 KW with ct26?

Post by Al-sw20 »

If you are keeping the original turbo then forget all of the above.

Fit a downpipe, 2.5", exhaust and fit a boost controller and run it at 1 bar.
outrun
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Re: [Mk2] [Turbo] It is possible to obtain 300 cv/224 KW with ct26?

Post by outrun »

st185l wrote:
alanmr2turbo wrote:
st185l wrote:And with another fuel system would it be possible?

What injectors would be needed?

I have heard that the original pump can be removed from the limitation and gives some more flow or pressure

What power can be reached with ct26 by mounting another fuel system


Go for the REV3 fuel management which also gets rid of the AFM. The whole kit will set you back around £300-£350


Thank you very much, what is this REV 3 and what brand is it?

Where could I find it?

What could you do to the engine without changing the turbo ct26?


To convert your Rev 1 or 2 Turbo (CT26 car) to Rev 3+ (CT20b car) you will need (aside from the CT20b turbo);

Engine loom, or modify your own
Injectors
Injector resistor pack
ECU
Igniter
MAT sensor
MAP sensor
IAT sensor

You will also need to modify your fuel rail as Rev 3 rail won't fit Rev 1/2 cylinder head and purchase a plate to mount the MAT sensor, as this replaces the old cold start valve.

Pretty sure I have listed everything.
As the lads say, you will never make 300 BHP, otherwise.

I can supply all of the above parts, as I have a car for breaking (Including a CT20b turbo that had very little play in the shaft, but has a damaged wheel, from taking it apart).
This is a good time to uprate the original ceramic internals to steel (something else you really should do for safety and safe power.)

I converted my own Rev 2 turbo to a complete Rev 3 turbo setup, but modified my original wiring loom.

Let me know if you want anything. :thumleft:
Rev 2 GT - Forged Rev 3 Conversion
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