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fredmeister fredmeister is offline
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Join Date: Oct 2002
Location: Baltimore, MD, USA
Posts: 2,232
Garage
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.
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1979 930 Turbo....3.4L, 7.5to1 comp, SC cams, B&B intercooler, Snow Perf water/meth injection, Rarlyl8 headers, Garret GTX turbo, 36mm ported intakes, Innovate Auxbox/LM-1, custom Manually Adjustable wastegate housing (0.8-1.1bar),--running 0.7bar max
---"When you're racing it's life! Anything else either before or after, is just waiting"
Old 01-22-2008, 09:02 AM
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