Boost control and Twinscroll

[tsoob]

Hey guys..

So my manifold and turbo are finally here! (was a little worried about the turbo)

The question I have is to do with boost control, and speifically what angles to take the wastegate pipes off at from the manifold.

Anyone with ms paint skillz that knows what they are talking about please go nuts!

Pics are as follows:

Look at my shiny new turbo



Exhaust side (you can see that its tight coming off the dump pipe as well)



Which angle to take the wastegate out on the exhaust side?



Cold side



Which angle to take the wastegate out on the cold side?

[sergei]

Take it off each side and into individual waste gate.

Could be 90', it does not matter if the pipe ID is 30+ mm.

[tsoob]

Take it off each side and into individual waste gate.

Could be 90', it does not matter if the pipe ID is 30+ mm.

that was my plan but 90' would that be ideal??

[sergei]

Take it off each side and into individual waste gate.

Could be 90', it does not matter if the pipe ID is 30+ mm.

that was my plan but 90' would that be ideal??

If you run two 38mm wastegates, with suitable piping (~32mm ID) it could be 180' and would work fine.

I run two 35mm wastegates, coming off exactly 90' from the spacer between turbo and stock manifold, and the boost is very stable (I can dial it down as low as 6.8psi which is spring pressure of the wastegates in question).

Just copy whatever Bazda did and you will be fine.

[Lith]

Oh nice, looks like an S200 series - which one and whats it going on?

[tsoob]

Oh nice, looks like an S200 series - which one and whats it going on?

s200sx with smaller exhaust housing.

my corolla 4agte black top head

[Bazda]

Id def get Dan Slater to do the twinscroll part.
So many people stuff it up when going into a single gate.

Best is to use dual 38mm gates.