View Single Post
911nut 911nut is offline
Metal Guru
911nut's Avatar
Join Date: May 2001
Location: Michigan
Posts: 2,513
Originally Posted by Rob 930 View Post
There's no question that the shorter one will be stiffer, but if the longer (and less stiff) spring is able to be compressed enough, it may exert more force. So this isn't as simple as it looks...
Having installed a 1 bar spring in a stock wastegate, I know this to be true!
This is where Hooke's Law makes perfect sense. Two spring of different length that are compressed into the same space. When I say different length these different grades of springs varied by 1/4 inch in length per 1/10 bar rating. In this case I think we can safely discount the "shorter is stiffer" argument as being trivial.
Paul B.
'91 964 Turbo
Port matched, SC cams, K27/K29 turbo, Roush Performance custom headers w/Tial MV-S dual wastegates, Rarlyl8 muffler, LWFW, GT2 clutch & PP, BL wur, factory RS shifter, RS mounts, FVD timing mod, Big Reds, - 210 lb
Old 02-21-2009, 07:05 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #34 (permalink)