No smaller then a inch. 1 inch and half for the WG tubes should do.Originally posted by gryphon
That is the actual pic off of HKS USA's site... *shrug*
I'm thinking of sourcing some small diameter SS and having a shop weld it on if possible. I wonder how much that would cost.
Any idea how big the wastegate dump tube should be?
You'll also need to fabricate the DP flange to make room for the WG door to swing open, roughly 90- degrees of swing.
Are you thinking of modifying the HKS DP or fabricating your own twin tubes DP?