Hello everyone!
What is max preassure for turbo for z5 engine?

We've all tried this and experimented with it..

There is none on this forum at this point in time with a working z5 turbo, some are working on it or have done it in the past. Most have tried and failed.

Now for a real answer, the z5 has not been designed as are turbo engine. Therefor it can only handle a little bit more I think a maximum of 130hp is probably possible for a few thousand miles if driven with care.

Also a word of advise.. do not post this random questions without any further info or even trying to explain anything about the project. I can assure you most people, incl myself, hate this.

I agree with Sneakz on this matter. It cost's way too much to get the Z5 in any shape to take any real boost from a turbo. You would be much better off buying a bigger or already turbo setup and dropping it in.

I found i spent a hell of a lot when i supercharged my Z5 for a while

Lerch my good friend, I may need to pick your brain about that super charging business. So expect am from me sometime matey.

It should be able to hold a decent pressure between 0.5 en 0.7 bar (7 or 10psi). Most N/A engines can deal with it, however it depends completely on the whole engine package. If the engine is in proper condition and you will use a controllable fuel management system or full standalone, it will do fine.