Thread: New td5INSIDE turbo from stock 2052 to 20XX

Jose
How much and do you upgrade the exhaust manifold??

Duane

At the risk of starting a fight.

Clipping turbines is the worst thing you can do for them. It is a trick used by petrol engine tuners 20 years ago to get more flow through a turbine (at the expense of low end response and efficiency). They did this because larger A/R's weren't available.
However for a diesel we don't want more flow through the turbine. We instead require the turbine to work harder and produce more boost at the same rpm.

A GT2056 turbine CHRA will plug straight into a TD5 GT2052 turbine housing. Giving a compressor capable of 30psi boost and delivering a safe and clean ~160kw worth of airflow at ~17:1 A/F ratio.
Low end response will improve over stock.

Maybe Jose can post up some dyno figures when he has one completed

LOOOLLL

When I was posting this thread I was with one of my co-workers and I´ve said to him " there is a guy name Dougal, wich is gona be the first one to write something about this, and believe me, he his not gona say positive things"

Well...here it is! You are not gona start a fight because I still think the same I´ve said to you in other discussions: go out there, make it better and then you prove a point! Till then, you are just theory and no real td5 world.

For the record the company that makes this turbo has:

- European record of the fastest diesel car going in to santa pod - That is a 1.9tdi car making 400 meters @ arround 10 seconds!
- Diesel 3.0 Isuzu´s winning Fia Bajas Races;
- Diesel 2.7 Nissans winning 4x4 24h endurance races;
- Turbocharged Toyota Supras twinning drift championships all over Europe, etc etc

So again, its a case of a company that make things happen everyday and prove himselfs right...

Some of their work and attention to details:

















So, we have made very specific request to them... They have answered asking If some things could be done in the map files... we gave them an answer and they have given us solutions... We are now starting to try those solutions and are gona decide wich are better. This is called development Simple as that!

Regards,

P.S. 1 - I dont know if you noticed the XX on the 20XX numbers This maybe means that the turbo is now a 2056 ;

P.S. 2 - I also dont know if you noticed that the turbo wheels are bit different form standart... so, maybe, this wheels can produce more boost at same or lower revs... 30 psi is guaranteed by the makers of the turbo, but they claim we can use the turbo to 2.5 bars If we want and dont have to worrie about turbo failure...

P.S. 3 When a company is devoloping something, you should not expect them to tell you everything about theyr product ... so, maybe you are missing some things!

Regards,

Originally Posted by djam1

Jose
How much and do you upgrade the exhaust manifold??

Duane

Exhaust manifold will be the stock one! We will also try the turbos with differente exausths types and sizes.

We expect them to be available for Australia @ arround 1200AUD - In Europe they will be a bit cheaper because we can have the old turbos as an exchange! Sorry for that guys

Originally Posted by djam1

Maybe Jose can post up some dyno figures when he has one completed

We will do that...

GT2056 #751578 specs: https://www.turbobygarrett.com/turbo...charger#GT2056

Compressor map:


Turbine map (not butchered):


About $US800 complete genuine turbo. I've been recommending them for a year or so. Simply use your original TD5 turbine housing and it'll plug straight in.

Of course this turbo still doesn't have the surge resistance for 500Nm on a TD5.

Your recomendation is based on ...?!! Have you tried that on your td5??
Do you have a remap to match it?? Logs, data and figures about how it goes in the td5!!?

So 800 USD = 900 AUD + 340 AUD (remap to match the turbo) = 1240 AUD (already more expensive) ... and you still have to fit it to the original td5 turbine and for 100% accurate work, calibrate it! Still more 100 AUD for a boost box ( wich should be free of charge in our turbos)!


P.S. - We did tried a simple 2056 in 2010 and the result was not brilliant. Lots, and I mean lots of turbo lag... was like an on/off button ( nothing and sudently everything)!!!There should be a thread here where we talk about it...That´s why we are now trying a new aproach, using differente compressor wheel!
We have also tried ballbearing turbos, and we found them fantastic on a 300tdi but not brilliant in a td5!!

And, we have also tried and use some ballbearing VNT turbos , but there are a lot of changes to be made for the fittment and we only do that in house...
Next to be tested is the 1756VK VNT turbo from the 2.7 tdi Audi which we think is gona be excelent at down low torque!

Originally Posted by td5inside

Your recomendation is based on ...?!! Have you tried that on your td5??

Full engineering analysis including turbine side matching to predict boost using exhaust temperature and flows.
It's about 10 years of my own work. Yeah I know a little bit about turbos.

Have I tried it on my Td5? Nope. I didn't try an HX30 on my 4BT either, but the boost results matched within ~2psi across the working range.

Originally Posted by td5inside

Do you have a remap to match it?? Logs, data and figures about how it goes in the td5!!?

If I had a TD5 I'd have my own remap sorted inside a week. I do my own engine tuning. Including remaps.

The only holdup would be finding and fitting a MAP sensor capable of covering the turbos pressure range. I notice there's no mention of this by you!

Originally Posted by td5inside

P.S. - We did tried a simple 2056 in 2010 and the result was not brilliant. Lots, and I mean lots of turbo lag... was like an on/off button ( nothing and sudently everything)!!!There should be a thread here where we talk about it...That´s why we are now trying a new aproach, using differente compressor wheel!
We have also tried ballbearing turbos, and we found them fantastic on a 300tdi but not brilliant in a td5!!

Right. So you think a GT2056 is laggy. Then you're trying to sell a GT20XX with a bastardised clipped turbine?

I'm guessing you don't understand what clipping does. It kills turbine efficiency and low end response. Introducing a lot of lag, but slightly increasing top end flow.

You do also realise there are many GT2056 turbos with different A/R turbine housings?