S4 Wastegate flapper arm material
#1
S4 Wastegate flapper arm material
So, what is the flapper made of? Its non magnetic, but cant be aluminum cause aluminum melts at ~1200 degrees F. Perhaps a Non-ferrous steel? Im in the process of getting a washer welded to the door cause I ported my wastegate, but the guy I brought it to said it was Alum. but I dont think it is. So anybody know for sure what it is? I want to get this done with tomarrow cause this is going onto day 3 of this crap. Thanks in advance
#5
I wish I was driving!
Originally Posted by FCKing1995
you sure? doesnt look much like iron and its pretty light weight
#7
I'm a boost creep...
Join Date: Jan 2002
Location: Auckland, New Zealand
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The Yamaguchi book says the twin-scroll flap in the manifold is made from "HK35 heat-resistant cast steel alloy", and it's likely the wastegate flap is made of something similar.
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#8
Originally Posted by NZConvertible
The Yamaguchi book says the twin-scroll flap in the manifold is made from "HK35 heat-resistant cast steel alloy", and it's likely the wastegate flap is made of something similar.