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fredmeister fredmeister is offline
Smart quod bastardus
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Join Date: Oct 2002
Location: Baltimore, MD, USA
Posts: 2,238
You guys have to remember that the area under the rubber diaphragm in the WG housing multiplies the pressure of 1 bar to get force to open the valve. If you look at the cross sectional area of the the WG housing, multiply that by 1 bar and that gives you a ruff idea of the actual spring preload you need to overcome to open the valve. Alot more than 14.5 lbs.
The best solution is to order a new 0.7 or 0.8 bar spring to be sure.
Make sure you run a boost gage in the clock hole tee'd into the brake booster for accuracy. Tach gage is useless.
1979 930 Turbo....3.4L, 7.5to1 comp, SC cams, full bay intercooler, Rarlyl8 headers, Garret GTX turbo, 36mm ported intakes, Innovate Auxbox/LM-1, custom Manually Adjustable wastegate housing (0.8-1.1bar),--running 0.95 bar max
---"When you're racing it's life! Anything else either before or after, is just waiting"
Old 01-22-2008, 08:02 AM
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