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mark houghton mark houghton is offline
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Join Date: Jul 2008
Location: Central Washington State
Posts: 3,883
Originally Posted by JFairman View Post
I have the adjustable WUR from Brian Leask and with that one you tap in the large center thing on the bottom to lean out boost enrichment by raising boost control pressure but then you have the option of pulling it back out with a little tool he supplies with it to get the exact pressure you want using a 4mm allen wrench.
He also puts warm steady cruise control pressure and boost threshold adjustments on the bottom along with the cold start control pressure adjustment on the top.

All that said and having adjusted the thing alot and watching pressures with the correct CIS gauges, I use the opposite end of dial calipers for measuring depth and tapping it in .005" at a time makes a noticeable difference. I wouldn't move it more than .010" at a time and .040" is 1 mm and thats too much adjustment at a time unless you got lucky.

Also for every adjustment you do on the bottom of the WUR for warm steady cruise, boost enrichment, or boost enrichment threshold you will affect and change the cold start control pressure setting on the top so you'll have to go back and set that again.
I'm expecting the tooth fairy to deliver my Leask WUR this afternoon. Your comments here help to paint a picutre of what I'm in for. Doesn't sound too awfully complicated. What, though, is the boost threshold exactly...and how does it relate to the boost enrichment? It must not be a delay as to when the enrichment begins (as the word threshold suggests?), otherwise the need for RPM controlled delay would not be necessary.
Mark H. 1987 930, GP White, Wevo shifter, Borla exhaust, stock everything else. The result of a massive Pelicanite good will fire recovery effort. Truely an open book, ready for the slippery slopes to modification.
Old 03-13-2009, 12:04 PM
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