S4 boost pressure
AudiWorld Senior Member
Joined: Apr 2009
Posts: 1,901
Likes: 0
You are not going to be able to push enough from the stock turbos to damage the internals. 19psi is pretty much all they can push and this would be working them really really hard.
As for the internals, I've been told no more than 25psi, which is pushing the envelope. 23 psi is considered reliably safe. The first thing to fail are the stock piston rods, you can get stronger replacements, like pauter rods, for about 1200.
For a GT build you probably will need coated pistons. Valve upgrade is optional from what I hear but it never hurts to do the supertech if you've got the time and skill.
Your stock boost hoses, DVs and intercoolers also need to be upgraded for anything around 17psi.
As for the internals, I've been told no more than 25psi, which is pushing the envelope. 23 psi is considered reliably safe. The first thing to fail are the stock piston rods, you can get stronger replacements, like pauter rods, for about 1200.
For a GT build you probably will need coated pistons. Valve upgrade is optional from what I hear but it never hurts to do the supertech if you've got the time and skill.
Your stock boost hoses, DVs and intercoolers also need to be upgraded for anything around 17psi.
AudiWorld Senior Member
Joined: Apr 2009
Posts: 1,901
Likes: 0
I'm not sure how the FMIC job and the turbo oil lines swap are related.
My advice is to swap out the stock lines only if you notice significant wear and tear when you do the turbo swap. I kept mine because they were in good condition. If you want to go with ebay stuff then the best thing to do is see if you can get the brand name stuff there for a little cheaper. I would not buy off-brand oil lines.
My advice is to swap out the stock lines only if you notice significant wear and tear when you do the turbo swap. I kept mine because they were in good condition. If you want to go with ebay stuff then the best thing to do is see if you can get the brand name stuff there for a little cheaper. I would not buy off-brand oil lines.
Thread
Thread Starter
Forum
Replies
Last Post
audibum
A4 (B6 Platform) Discussion
14
Jan 23, 2004 02:34 PM
ToastyStage3::HCBP
S4 / RS4 (B5 Platform) Discussion
33
Jan 2, 2004 03:10 PM
CarbonFibre
S4 / RS4 (B5 Platform) Discussion
8
Dec 2, 2003 04:13 AM
