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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
Lets see, the wastegate can or diaphragm diameter is roughly 3 inches in diameter. Cross sectional area is then Pi *d^2/4 or 7 square inches.
Multiply that by 14.7 psi and you get about 104 lbs of force needed to crack open the wastegate valve. Seems reasonable you aint gonna do that with your thumb.
Alan L measurements seem in the ballpark then. My dimensions are just a guess from memory.
Pretty cool stuff.
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 02-11-2008, 04:33 PM
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