bluenc-87

Hi,

I have a Garrett T3 50 trim turbo and a SPA rep cast top mount manifold from ebay. The turbine port is too small. From the pic below, the Turbine width is 1/8" smaller and the Length is 1/4" smaller. I dont know if that's usually normal having to port the the turbine housing? I'm not sure if I really want to port the Turbine larger as it may too big of a enlargement or cause cracking?

Top= Turbine
Bottom= Manifold


Turbine

DA9_LEO

That's A lot of material, from past experience I would open it up at and angle and try to keep it as smooth as possible, seems like a lot of material in the last picture, best of luck ive seen it done before with 0 issues

bluenc-87

Feel like it's too excessive. I'm assuming sometimes ppl do have to port it out some, but not this much. First time going boost so I'm unsure.

Turbo-LS

iTrader: (4)

Leave it alone. It'll flow 1000hp like that. You could taper it but don't remove a ton of material

TheShodan

iTrader: (14)

Definitely ok as it sits now. the only porting I ever did was at the inner volute back in 2010. that took a LOT of time. I don't plan on ever doing it again.

Before




After