wastegate signal question
#1
wastegate signal question
so, i know the greddy wastegate has a reputation of dropping boost in the upper RPM ranges. now, i thought i read somewhere that it could potentially be attributed to the location of that nipple on the compressor housing that is used as a signal line. idea being that it's not in an ideal place to be used as a signal line.
would plugging that nipple and taking a vac signal from somewhere else help the issue, potentially?
would plugging that nipple and taking a vac signal from somewhere else help the issue, potentially?
#2
Boost Czar
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no, it has everything to do with the weak diaphragm.
moving it to the IM might help, but i doubt it will do anything. Your biggest allie in the battle for cheap fixes will be a helper spring. This will provide more preload on the wastegate so it doesn't get blasted open and over-powered. It should fight spikes and dropping boost at redline.
moving it to the IM might help, but i doubt it will do anything. Your biggest allie in the battle for cheap fixes will be a helper spring. This will provide more preload on the wastegate so it doesn't get blasted open and over-powered. It should fight spikes and dropping boost at redline.
#5
you can take apart the actuator and replace the internal spring with something stiffer if you don't want to install a helper spring. i have tried doing this before to a different actuator (actually, i installed a softer spring because i wanted less boost) and they are designed in very similar ways. it is a bit of a pain because once you get the canister apart you have to worry about sealing it back up.
a helper spring would be much easier. to install it, all you need to do is put the spring in such a location that it helps to hold the wastegate flapper shut.
a helper spring would be much easier. to install it, all you need to do is put the spring in such a location that it helps to hold the wastegate flapper shut.
#6
Supporting Vendor
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You don't want to source from the IM because then your actuator sees both boost and vac, which will shorten it's life.
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