Thread: BOV orientation
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911nut 911nut is offline
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Originally Posted by 911st View Post
There is another step up from this to an anti-lag stragy where the turbo blead between shifts can be sent to the exhaust primary tubes to further energize and spin up the turbo in reserve. Some of the early non Porsche street turbos were even delivered with the plumbing in place so it could be use in racing. Could hook it up to the exhaust air injection manfold.
I concur with JFairman on this.
The volume of air from this system wouldn't be enough to make a noticeable difference. If you could burn some fuel and air during this period, the expanding gases would indeed drive the turbo.
That's what the factory did on the 965 LM car to keep the turbo spolled up. It wasn't incorporated into the road cars because of the negative impact on fuel consumption.
As for the heat killing headers, I would bet the Suburu headers were made from Inconel (as are a lot of high end racing headers are), which is a nickel superalloy which will withstand a lot of heat.
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'91 964 Turbo
Port matched, SC cams, K27/K29 turbo, Roush Performance custom headers w/Tial MV-S dual wastegates, Rarlyl8 muffler, LWFW, GT2 clutch & PP, BL wur, factory RS shifter, RS mounts, FVD timing mod, Big Reds, - 210 lb

Last edited by 911nut; 12-08-2009 at 03:17 PM..
Old 12-08-2009, 03:13 PM
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