93 Audi urs4 pressure regulator valve problem.

[Mitch7202]

Hi guys,

New to posting on this Forum, my name is Mitch.

Just wondering if anyone else has had this problem before and if so any ideas and knowledge on whats gone wrong and how it works.

So ive done a search on the part number, 034 129 101 a and its coming up as a PRV. I had just had the car tuned after
getting the engine rebuilt with all the good stuff, forged pistons and rods and stroked it from a 2.2lt to a 2.5lt. running a gt3071 garrett
turbo at the moment. With the dyno tune finished it was running 20psi Boost.

As soon as i drove it out of the workshop it was whining when it would come on boost. I got it home and found one of the fins
on the compressor housing was bent, but after taking off all the intercooler pipes, all up there was about 300-400ml of oil in the piping.
Ive taken the PRV and PCV out of the car, PCV part number is 035 103 245 a. I can blow through both ways of the PRV. The PCV i can only
blow through one way but that did take a bit of tapping with a screwdriver to free it up.

So my question is, are you meant to be able to blow both ways of the PRV or is that meant to be a one way valve as well? Could that have
been what has let go and a piece of that has gone through the pipe that goes through the rocker cover back to the air intake and bent a
fin on the turbo?

And also is that why i have got so much oil on the intake side?

I should also tell you i did a leak down test on each cylinder and that came up ok and compression test as well.

Sorry for the long post but i hope someone can help me

Cheers

Mitch.

[varia]

Hi guys,

New to posting on this Forum, my name is Mitch.

Just wondering if anyone else has had this problem before and if so any ideas and knowledge on whats gone wrong and how it works.

So ive done a search on the part number, 034 129 101 a and its coming up as a PRV. I had just had the car tuned after
getting the engine rebuilt with all the good stuff, forged pistons and rods and stroked it from a 2.2lt to a 2.5lt. running a gt3071 garrett
turbo at the moment. With the dyno tune finished it was running 20psi Boost.

As soon as i drove it out of the workshop it was whining when it would come on boost. I got it home and found one of the fins
on the compressor housing was bent, but after taking off all the intercooler pipes, all up there was about 300-400ml of oil in the piping.
Ive taken the PRV and PCV out of the car, PCV part number is 035 103 245 a. I can blow through both ways of the PRV. The PCV i can only
blow through one way but that did take a bit of tapping with a screwdriver to free it up.

So my question is, are you meant to be able to blow both ways of the PRV or is that meant to be a one way valve as well? Could that have
been what has let go and a piece of that has gone through the pipe that goes through the rocker cover back to the air intake and bent a
fin on the turbo?

And also is that why i have got so much oil on the intake side?

I should also tell you i did a leak down test on each cylinder and that came up ok and compression test as well.

Sorry for the long post but i hope someone can help me

Cheers

Mitch.

i suggest you post this here:
http://theprojectpad.com/viewforum.php?f=10
and
http://forums.quattroworld.com/s4s6/
it will be answered in no time by knowledgeable ppl