[adieu]

Here ya go the post made by Dan from TT:

The turbo is built to handle 22psi all day. While the 19T is a good turbo for a standard car, i would not recommend it to be used for running high boost. Yes, they come with a 360 degree thrust bearing as standard, but it really isn't up to the job of handling much more than standard boost. There is also the problem of the old comp wheel design and it's narrow working range.

To be honest, it is nearly impossible to use a standard turbo as an uprate in place of another standard turbo. While the 19T is the closest match you would find with regards to size (although it is still quite a bit smaller), it is not built to handle high boost pressures, nor is it specifically designed for the job you want it to do. It would be nearly impossible to put a warranty on a standard unit being run above its recommended boost pressure. We can offer a two years warranty with our hybrids.

I would just like to point out, as well, that it has been mentioned that a Standard unit can run up to 26psi. This is true of most turbos, and if that is the case, what is the need for hybrids? A standard unit can not run much more than standard boost EFFICIENTLEY. Tuning cars is more than just how much boost you can run. You need to take into consideration things like heat as well. A standard turbo will get extremely hot at 26psi, thus counteracting the compressing effect and therefore reducing power and creating dangerous knock as the intercooler struggles to cool the charge air back down. You also encounter the problem of overspeed, due to the turbine side being too small. This will cause premature wear on the bearings, hence the need for a larger turbine side.

And alittle more:


The T28 would be more responsive, has a substantially larger compressor wheel. In fact, to get technical, the diameter of a Td04hl wheel is 56mm with a 43.4mm inducer, whereas the T28 wheel is 60mm diameter and has a 46.4mm inducer. Therefore the T28 is 14% larger which would roughly equate to a 40bhp higher maximum working range. A 15G is capable of not much more than standard power, efficiently. The Mitsubishi compressor design is very old with a full blade design, which gives a very narrow operating range, and a common side-effect is the inducer chokes up. The T28 uses a new half blade design.


Our hybrid also comes with a substantially larger turbine side, designed by us for the Volvo, not a standard T28 housing. Yes, it does require a fitting kit, but this is supplied. Yes, it does away with the dump valve, but this is not a necessity. Dump Valves are only needed on the standard Mitsubishi turbos due to there compressor design. The narrow operating range can cause surge, and a dump valve is used to help counter-act this problem. If the user would like a dump valve, it can be plumbed in elsewhere very easily.

There ya go new I could find it.....Hope that answers your questions.

Regards

Iain