View Single Post
911st 911st is offline
Registered User
Join Date: Jan 2004
Location: Sacramento
Posts: 7,269
That helps.

I had it backwards.

The exhaust pressure is trying to push the WG open. Thus, it is pushing against the surface area of the valve head and trying to open it.

I am wondering if testing on a bench or at idle installed is just a check to see if it is functioning and a rough check as to boost level.

There seems to be other variables like the quality of the WG tube connection to the exhaust manifold, spring rate, surface area of the valve, turbo configuration...

Probably the only real test is on boost with a boost gauge in place.

Old 04-18-2010, 03:18 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #11 (permalink)