View Single Post
WinRice WinRice is offline
Registered User
Join Date: Jun 2005
Location: Colorado
Posts: 700
Originally Posted by 911st View Post
Control pressure flows from the lower chamber to the area above the Control Plunger.

If you block off the CP line you will probably hydro lock the Plunger and not be able to advance it quickly.

You could leave the WR in place and it would act as a hydro spring. Then make your own arm to work against the plunger via the steeper motor. No need to mod the plunger.
Very true! "Blockoff' wasn't a good choice of words, more like reduce the CP as low as possible so the stepper wasn't working against the pressure.

The only reason I would pull the WUR is to make sure I have nothing else in the system that would control the plunger, except the stepper. So maybe the WUR gets replaces with a fixed pressure regulator so it's always constant?

Using the arm would be slick, because you could vary the arm to pivot length to fit whatever the stepper throw you have.
1986 911 Turbo
3.3L, K27HFS, Tial 46mm, TurboKraft Intercooler, 964 Cams, Monty Muffler, MS3Pro Evo, M&W Ignition, Zietronix WBO2 Data Logger, Wevo shifter, coupler and motor mounts.
Old 09-23-2010, 01:37 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #282 (permalink)