Thread: Schizoid Boost
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WinRice WinRice is offline
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Join Date: Jun 2005
Location: Colorado
Posts: 700
Originally Posted by j8tg View Post
Engine oil up to normal temp--2nd gear roll on and wonderful .8 all the way to near red line. Backed off and did it in another 60 seconds or so---same engine oil temp reading---and right back to .6! Stayed there on 3 or 4 more runs before back home.
Just for fun, try to duplicate the above test, but roll the window down and listen for the waste gate as you roll into boost. Can you hear the wastegate open at 0.8? Then at 0.6? Is the wastegate stock?

When it consistantly won't boost high, stop the car and put your hand by the wastegate outlet and see if there is leakage from a stuck WG valve.

Does the car run differently each time, or about the same? What are you using to measure boost? The max boost pressure could be fine, but the gauge or sensor could be wacky.
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 08-13-2010, 01:12 PM
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