wastegate spring test

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turboef87

New Member
im checking my wastegate spring b 4 i put it in my car.. what do i need??? im just checking when the wastegate actually starts to open.. and i wanna kno were i can buy what i need to test it
 
yeaa at what psi does the spring open the wastegate... can i hoook it up to a pump with a pressure gauge then just addd presssure tilll the wastegate cracks that should telll me ritee
 
put in your car and hit full boost! rep+ me!
 
put in your car and hit full boost! rep+ me!

:slap:

Find someone with an air compressor with a regulator. Hook the boost only port on the wastegate to the hose on the air compressor (using a nozzle or whatever). Set the regulator on the compressor to about 50psi and try it. Keep in mind that there will be no pressure on the wastegate from the exhaust so whatever pressure you use on the compressor divide that by two and that will be right about where it'll open. You can do this on or off the car. On the car might give you a more accurate idea.
 
wam bam thanks man......lol but honestly i looked all my springs up from color codes and i never get exactly what they say it is. always close but never exact.
 
it also will depend on how you have vac. setup and where. also where your waste gate sits on the mani. several variables involved. just because it tests at 89psi doesnt mean thats what you get when you hook it up.
 
it also will depend on how you have vac. setup and where. also where your waste gate sits on the mani. several variables involved. just because it tests at 89psi doesnt mean thats what you get when you hook it up.

Notice how I said its approximate. There's no possible way to manipulate it exactly. But driving the car and figuring out where it opens is not a good idea. Especially because from the sound of it the car isn't tuned. Bad idea.
 
well get it tuned ofcourse. my s100 has a cutoff @20psi
 
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