External Wastegate size

[neal1980]

I have been given an external wastegate and want to know what size it is, What do you measure on the wastegate to get this?? common ones I have seen talked about are 38mm, 44mm, 50mm and 60mm..

Cheers

[neal1980]

Cool i thought as much but wanted to check.

Many Thanks

Also it has a large yellow spring in does that mean a particular psi rate ??