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WinRice WinRice is offline
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Join Date: Jun 2005
Location: Colorado
Posts: 700
Originally Posted by 911st View Post
Just keeping the WUR or replacing it with a fixed rate fuel pressure reg is a lot easer than doing surgery on the FD to block the restricter that feeds control pressure.

Also, do you recall what the hot and cold control pressure range is about?
I wouldn't want to do surgery on the FD just yet, but if the stepper system works well, that might be the next step in development. Get down to the least parts.

The 'white' book for 78-81 3.3L shows this:

CP Warm -- 3.65 +- 0.20 bar
Full Throttle Enrichment -- 2.90 +- 0.20 bar
Cold -- 1.0-1.45 @ 10C to 2.6-3.0 @ 35C

So using Jim's dia of 17mm, and a warm CP of 3.65 bar, that gives 18.62 lbs of force on the plunger. That's still a pretty good force.
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 09-25-2010, 07:34 AM
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