Hi,

Somebody can tell wich power can wistand the td04 without damaging?

Is it possible to hybidize this turbo like tdo5/06 conversion?

Thanks

 

The 04 exhaust housing is too small to make any custom work worthwhile IMO. Depending on who you talk to, or which rolling road you visit, anywhere between 260 and 300 hp is possible on this turbo. I suggest anything mush more than 280 will be the exception rather than the rule.

Get yourself a td05 or vf34/35.

Richard

 

Thanks very much this will help me, I've be quoted for about 270bhp.

Do you know where can I buy the tdo5/06 and its price?

Thanks

Daniel

 

am running a td04 on 1.3bar and getting about 270 - you can really feel it running out of puff above about 5300rpm.....

 

Heu maybe we haven't the same tdo4 turbo cause it still pushing till injection cut so.

Do you have some ECU reprogrammed or some kind of piggy back box?

I've one remapped, maybe your fuel injection isn't copping with all this boost.

Daniel

 

With aftermarket headers, full decat, turbo inlet hoses and probably better air filter or cone you can easily go at 300 or more IF you have the required fuel (injectors-fuel pump) as what counts is volumetric efficiency and not only the turbo!
JIM

 

TD05 F/E 16g - £300 + shipping.

 

The td04 hampers volumetric efficiency to a very large degree because of the excessive backpressure caused by the small exhaust housing, that's the point.

I haven't mapped that many cars (50-60 total), but regardless of other breathing mods; if they had the stock td04 none showed signs of breaching 300 hp (I doubt any had a real 280 either, but a few achieved above this on some rolling roads ). The TD04 chokes things, big time.

Richard

 

Allegedly, the later TD04s (as fitted to bugeye onwards) were slightly less restrictive that those fitted to classics.

Regards power output - yes, the exhaust housing hampers things. However, best I have ever heard of on a TD04 was 312bhp on PE's rollers (which I know tend to be more optimistic than most). Whilst this might be marginal for a "real" 300, I'd say it managed a real 280. I also know of 2 others who achieved high 290s at PE - one with OEM headers, one with equal length. My bugeye runs mid 280s on PEs rollers with this turbo, as are a lot of exhaust/mapped cars; would probably be in the mid-low 260s at powerstation.

The secret of the guy with 312? The only real big difference over several others was a heavily uprated TMIC, which drops 1-2psi less than the OEM bugeye unit, and therefore allows more boost and flow for a given turbo load site (and hence back pressure), plus a TEK3 map with lower safety margins than some I believe.

Admittedly, with that set up, a similarly agressive map and a fe TD05 I expect he'd have seen 40bhp more easily enough. Benefit of a well sorted TD04 is of course getting lots of boost by about 2500rpm, VF35 or TD05 are a few hundred revs slower to spool up - you don't often get something for nothing!

 

P S - A well sorted TD04 running 1.1-1.2 bar - especially with uprated TMIC - will hold power through to much higher revs - mine keeps ~280 from 5800 until nearly 7000 revs. HOWEVER, if I look at a delta dash, the boost starts to drop off before 6000rpm, and I'm only running 1.18 bar peak/1.15 held boost in the mid range - dropping to 0.9 at ~6800 IIRC. Therefore not surprising if the turbo can't push more than 5300rpm whilst maintaining 1.3 bar.

 

The WRX's seem around 5-10 hp up on their classic cousins, which almost makes up for their weight penalty I stick to my statement on the cars I've mapped.

I should add that I'm not slagging the TD04 - while it's easy for us to say that Subaru made a big mistake specifying such a small turbo, I'm sure 70% of Scooby owners would rather the 1 bar at 2k5 and 270 hp than 3-500 rpm later and 30-40 hp up on power. Horses for courses....

Richard

 

I agree Richard about your comment!
JIM

 

Hi Hades,

First thanks for all the infos :-)
Like your turbo mine is normally running 1.35bar but start drop off just after 6000rpm after that it runs 1.25bar dropping to 1.1bar till red line

 

Mark (R19KET) at Lateral Performance does a TD04 Hybrid that I've got. A couple of years ago, it was £500 exchange item. John Banks also had one and rated it.

Mine pulls just as hard low down as the stock TD04, but has a lot more midrange and keeps going longer at the top. I'm well pleased. I would guess my peak power to be over 280bhp, but this turbo is not about peak power. It is probably close to 280lbs/ft in torque, and that's what I bought it for.

Richard.

 

Do the mechanic have to change something to swap both turbos?
Do you know where I can get the tdo4 hybrid like yours but keeping in mind that I'm from Belgium :-)?
thanks

Daniel

 

If you want Mark aka R19KET try e-mailing him at mark@lateralperformance.co.uk

Cheers

 

As Delboy says, Mark's the man. I'm sure he can supply you and he is also generally regarded as the leading Subaru turbo-God, so if you want 600bhp...

Mark likes to talk, so give him a call on 0044 20 8420 5444.

You will also need a remap.

 

Thanks very much for all

Cheers :-)

 

Mark's a top bloke - he rushed me out an uprated fuel pump for a tek3 BEFORE I could get a cheque out to him.

Thanks again Mark.