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External wastegate Help!

Old 12-29-2005, 09:16 PM
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I'm buying a new external wastegate and I need a little info. .. How do the spring rates relate to boost??? How do I know what size to buy??? (50mm)?? ANY info on this would be a big help!!
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Old 12-29-2005, 09:23 PM
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what turbo are you running, how much boost do you plan to run, etc?



the spring rate is when the wastegate opens to vent excess exhaust. for example, a .5 bar spring would open the wastegate when you see .5 bar of boost. you could always change when the wastegate opens with a boost controller, but you cannot go below the spring rate.



if you need a really inexpensive wastegate, i have an old HKS one that's been rebuilt, but was too small for my application. i can't recall the diameter or spring rate, but if interested, i could check.
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Old 12-29-2005, 10:01 PM
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the compressor is A/R .60 and the turbine is A/R 1.15 and I plan to run 2 boost settings low: 15PSI and a high: 25PSI
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