bumble zee Posted May 25, 2010 Share Posted May 25, 2010 Should I just drill into the compressor housing and put them in, or can I use a port on my manifold with a check valve so the waste gate wont see vacuum? Quote Link to comment Share on other sites More sharing options...
slownrusty Posted May 25, 2010 Share Posted May 25, 2010 What kind of turbo and pics? Quote Link to comment Share on other sites More sharing options...
Tony D Posted May 25, 2010 Share Posted May 25, 2010 No check valve! Simple port on the manifold will work, turbo may initially overspeed due to the plenum volume getting filled, but it results in quicker spool as the wastegate is held closed slightly longer. On drop-throttle if the plenum goes into vacuum, this will also slam the puck on the wastegate closed helping keep exhaust flowing through the turbine and keep turbine shaft speed up compared to a torus-mounted pressure sensing point. I would not alter the casting of the turbo, simply from a 'what if warranty' standpoint. Heck, the only thing I use those ports for on the STOCK turbo is as a source for Idle Air Bypass! The other one (if it's there) gets plugged. My stock wastegate is plumbed off the manifold. Quote Link to comment Share on other sites More sharing options...
bumble zee Posted May 26, 2010 Author Share Posted May 26, 2010 Its a T3/T4. Thanks Tony. Quote Link to comment Share on other sites More sharing options...
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