How much boost? - PeachParts Mercedes-Benz Forum

Monomer · #1 11-18-2006, 06:25 PM

Quote:

Originally Posted by Brian Carlton

It can certainly "take" 14.5 psi.

Whether that much boost is actually doing anything is the real question. I've found that anything above 12 psi on the 617 is basically useless. I can't be sure if this is true on the 602, but, I would suspect that it might be.

It's not spooling until 2800rpm, really.

anything under that it gets around 2psi of boost.

Brian Carlton · #2 11-18-2006, 06:28 PM

Quote:

Originally Posted by Monomer

It's not spooling until 2800rpm, really.

anything under that it gets around 2psi of boost.

Well, that might be typical of the 602.

I'm referring to the max. boost of 14.5 where the wastegate opens. That figure seems to be more than required, but, it won't hurt anything.

Monomer · #3 11-18-2006, 06:30 PM

Quote:

Originally Posted by Brian Carlton

Well, that might be typical of the 602.

I'm referring to the max. boost of 14.5 where the wastegate opens. That figure seems to be more than required, but, it won't hurt anything.

That's what I needed to know.

Thanks, Brian.

Mitch H · #4 11-19-2006, 09:04 AM

The older ones shut off the ALDA if boost hit about 1.1 to 1.2 BAR, that might give you a clue. I don't know if the overboost protection kicks in at the same place on a 90-93 or not.