RE_TurboFB

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!!

RussellTT94

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.

RE_TurboFB

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