Duduglanza Posted November 4, 2016 Share Posted November 4, 2016 Decided to take my wastegate off my car since after so many years of work it got stuck open one day! Tought i give it some testing with a regulated compressed air. Connected the hose to the bottom nipple and as opened the air to around 10psi air strarted to leak right round the valve , out the exhuast chamber. As i continued to increase to 20psi air was getting out more and more. May i ask is it normal? Tought that a wastegate cannot leak from nowhere. Thanks Quote Link to post Share on other sites
adzy Posted November 4, 2016 Share Posted November 4, 2016 Sounds like you need to lap the valve to create a better seal Quote Link to post Share on other sites
Duduglanza Posted November 4, 2016 Author Share Posted November 4, 2016 Could you explain whats " lap the valve " mean? Quote Link to post Share on other sites
adzy Posted November 4, 2016 Share Posted November 4, 2016 https://youtu.be/iS2q6G6kmB4There's a guide mikey on here made Quote Link to post Share on other sites
akyakapotter Posted November 4, 2016 Share Posted November 4, 2016 What pressure spring do you have inside the waste gate? Cheers nick Quote Link to post Share on other sites
Duduglanza Posted November 4, 2016 Author Share Posted November 4, 2016 Got 12psi springs. Quote Link to post Share on other sites
adzy Posted November 4, 2016 Share Posted November 4, 2016 Just realised I misunderstood your 1st post.But yeh that's not ideal as you could end up making more boost than your spring is intended for if here is a leak.Prob worth taking the spring out and checking the diaphragm for any damage then Quote Link to post Share on other sites
Duduglanza Posted November 5, 2016 Author Share Posted November 5, 2016 The diaphram is intact and sure there are no holes or any tares... if so it would leak air from the upper nipple... but instead its leaking from the shaft. Maybe by time the clearance got a bit bigger ... Quote Link to post Share on other sites
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