DV and N75 change.

[bilko0795]

Been reading a few posts on here ref diverter valves i have decided to do mine as part of a little tlc for the engine Not sure yet whether to go for Oem or Am one. I am also proposing to change the bleeder valve, pressure regulator, the small T hose and i am also thinking N75, would it be better to go for the N75j as to the N75, and what diff would it make. I am also doing the hoses. Is there any where else that can cause boost leaks.

[prj]

Pressure test first, then swap components.
There is no need to change any of this unless it's giving problems...

Only thing I would take a look at is dump valve, if that's still the original one, fit the Bosch 710N instead.

[Drummer87]

And when I finally got my leak tested found my dump value and n75 to be leaking air like crazy!! Also my isv wasn't clamped together

[prj]

N75 shouldn't leak, if you mean that you heard a hiss through the wastegate, which stopped when you pinched the hose on the short end of the N75, then they all do that.
However, if the plastic has become brittle and cracked, then it can leak.

As I said, it's a good idea to leak test and locate the faulty components.
Otherwise you end up blowing lots of money on the car and often accomplishing absolutely nada, swapping out perfectly good parts.

[Drummer87]

Yeah we blocked off the wastegate and plumb a gauge into that line. Sprayed soapy water and the n75 is leaking all around it. The hoses were nipped up etx. But defo n75 leaking air.

I wasn't tripping had a few with me who checked and checked again

[prj]

Yeah we blocked off the wastegate and plumb a gauge into that line. Sprayed soapy water and the n75 is leaking all around it. The hoses were nipped up etx. But defo n75 leaking air.

I wasn't tripping had a few with me who checked and checked again

If it's still the original one, they can get brittle after 15 years.
But I've seen many that are fine as well.
Not saying it's impossible, just saying check first! Obviously yours leaked, and you've sorted it - so good job

[Drummer87]

Ain't sorted it just yet dmitri. Waiting on replacement. Hoping fingers crossed is the cause of my running issue.

Swapped dv for original, and clamped isv. Tested again and all leak free. Then noticed the n75 is leaking. Thought was the hose inlet to maf turbo hose. But after removing and checking for splits turned out to be the unit.

Hope this is the end of my woes

[bilko0795]

Pressure test first, then swap components.
There is no need to change any of this unless it's giving problems...

Only thing I would take a look at is dump valve, if that's still the original one, fit the Bosch 710N instead.

Cheers
Rusty is lending me his leak test kit will defo check first.
Will change DVD anyway was looking at a forge one but may just get 710N one.

[prj]

710N has better response than forge and seals better.

[bilko0795]

710N has better response than forge and seals better.

Cheers again Dimitri 710N it is, will be ordering it tomorrow

[Acidburn]

as above, 710 is definately better, i've heard a few people having issue's with the forge one's.