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wastegate size?

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Old 10-03-2012, 12:42 PM
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Default wastegate size?
trying to determine what size wastegate i need? how does one go about doing this?
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Old 10-03-2012, 12:59 PM
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I have a gauge for that
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What engine? How much boost? What turbo?
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Old 10-03-2012, 01:02 PM
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cammed 5.3 76mm turbo and probably around 14-15psi

im assuming the saying "bigger is better" applys here?
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Old 10-03-2012, 01:03 PM
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What 76mm turbo?
And are you dump waste gate to atmosphere and how big of an exhaust are you gonna run.
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Old 10-03-2012, 01:05 PM
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The higher the boost the less wastegate you need...

a 38mm will probably be fine for that, but a 50mm wouldnt be bad
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Old 10-03-2012, 01:05 PM
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to be honest not sure.. recomendations? i know exhaust would be atlest 3"
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Old 10-03-2012, 01:06 PM
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so maybe run like a 40mm or 45mm?
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Old 10-03-2012, 01:21 PM
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you can run the 3" but id dump the wastegate to the atmosphere or run a muffler on it..
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Old 10-03-2012, 01:47 PM
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what do think the hp limits are with 3" and the wastegate dumping into it
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Old 10-03-2012, 01:49 PM
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you just start getting boost creep.. and then it cant flow enough as it is so the boost keeps on creeping up from the backpressure..

i have no clue on the HP limits.
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