Looks nice and great fit. Like to see a better pic of the T4to V band adaptor.
Wastegates. Not sure which one to use. I use a 38 on mine.
What size is the Exh A/R on the old and new turbo?
Old 56mm was a .69 A/R turbine. New 66mm is a .82A/R turbine. I had full spool by 2800rpm IIRC on the old journal bearing which I was happy with. I'm hoping the ball bearing will compensate for the slightly bigger A/R.
Tom - is your 38mm mounted at a T with the exhaust pipe or is placed swept forward to be advantageous for the flow into the wastegate?
Just took the turbo off to check the water and oil fitting sizes. I'll try to snap a pic of the adapter flange tomorrow
Last edited by snowman4839; 06/20/1812:12 AM.
69 Buick Special Deluxe. Intercooled Turbo Chevy 250 @ 15psi on a stock long block. It's kinda fast.
