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cole930 cole930 is offline
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Join Date: Mar 2000
Location: Auburn,In. U.S.A.
Posts: 2,449
The 930 wastegate is not a precision instrument it's a simplified pressure actuated relief valve. Functionally it works quite well under extreme conditions but
practically it is a step or two above the flush valve in your toilet. In most cases it will keep the heads from blowing off you engine but, if it were perfect, you wouldn't have an overboost switch.

You can spend $400-$600 and buy a polished, pretty, painted one that does exactly the same thing in exactly the same way but it looks much better doing it.
If it's a real concern to you, your best bet is probably an electronic boost controller that uses a solenoid valve that keeps boost pressure from reaching the wastegate until a preset is reached and then blows the wastegate open almost instantly.

Now, this runs us all the way around the barn and back to the door. There is probably a perfect solution that totally escapes me but in the words of my wise Grandfather "with perseverance and a little sweet oil you could f--- a cat" But in the interim make sure your overboost switch works.

Cole
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Cole - 80 930 "The Old Sled"
Mods: TurboKraft Custom IC, 934 Headers, GSX 61, Zork, Port Work, SC Cams, Air Mod Fuel Dist Relocated, Water Meth Injection, BL WUR, MSD 6530, Greddy EBC, Synapse Bov, Short 2nd & 3rd with 8:37 R&P, Wevo Shifter, Coupling, and Mounts, MTX-L SSI-4, Big Brakes, Rebel Coilovers, Bilstein Sports.

Last edited by cole930; 06-10-2010 at 01:22 PM..
Old 06-10-2010, 07:41 AM
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