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t3/t4 .57 trim and 38mm wastegate

Old 09-02-2010, 05:35 PM
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Default t3/t4 .57 trim and 38mm wastegate

I have a jdm t3/t4 .57 trim turbo with a 20mm port on the exhaust housing for the wastegate. I have a 38mm dual port wastegate with a 6# spring. If I run my 6- stage boost controller, how much boost can I run before the 20mm hole becomes too restrictive and causes boost creep. I don't really want to port the housing if I don't have to beacuse I don't want to weaken the housing, but I can weld a pipe to the the header. This is on a hayabusa so room is limited and I'll only need 18-20 psi out of it.
t3/t4 .57 trim and 38mm wastegate-100_1147.jpg

t3/t4 .57 trim and 38mm wastegate-100_1148.jpg

t3/t4 .57 trim and 38mm wastegate-100_1139.jpg

t3/t4 .57 trim and 38mm wastegate-100_1143.jpg

t3/t4 .57 trim and 38mm wastegate-100_1149.jpg
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Old 09-03-2010, 11:39 AM
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the more boost you run, the less exhaust gas goes through the wastegate.
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Old 09-03-2010, 09:20 PM
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thanks, I was thinking bass ackwards.
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