Bought a used synapse Wastegate and noticed that the top piece that houses the springs was loose where it attached to the bottom valve housing. I took it apart and saw that the 3 bolts holding the pieces together were loose. I took them out and clean the whole Wastegate. My question now is, does anyone know what grade of grease I would need to use to replace the previous grease for proper lubrication of the valve assembly.

 

if its helps, when i reassembled my tial, i didnt use any grease or lube for the small allen key screws

 

I used green high temp loctite for the screws. It's the lube for the valve that I'm inquiring about. Synapse wastegates don't use diaphragms.

 

i would email another wastegate manufactor. if i was to use something it wouldnt be something excessive or something that cant be become runny in stupid temps

 

You'll want some ultra high temp grease - those temperatures can get pretty intense. Maybe try calling Synapse and ask specifically what grease they recommend would be a good idea? You could look around for some 2000* grease, but that stuff is pricy as hell.

 

damn i thought they ran under

 

I'm no pro, and I don't know for sure, but going from this article from Turbosmart, and this interview with a Turbosmart tech who says...

Emphasis mine. If it's constructed for up to 1650ºF, then safe bet you should use lube that can also handle that temperature.