3SGTE CT26 CT20b Exhaust housing

[loudstealthGT-Four]

Just wondering if there are any difference between the CT26 and the CT20b exhaust housing on a 3SGTE.

As I am planning on increasing the size of the factory wastegate ports, have three spare CT26's in the garage that i can use the exhaust housing off, if they'll work?

Tyler

[gt4dude]

different, ct20b exhaust side is alot better for spooling, i think the exhaust wheel is slightly smaller, and the housing flows better through the wastegate ports

[iOnic]

Ct20b has a smaller exducer on the turbine. To fit the 26 turbine housing on a 20 you would have to add metal and reshape the housing to suit the 20 turbine wheel profile


aka too hard basket

[loudstealthGT-Four]

Ah bugger, was hoping to just get it done then swap the housings over.

To hard basket indeed.

Thanks Tyler

[iOnic]

You can swap the housings over if you use the turbine wheel to match the housing but then you don't have a ct20b anymore

[loudstealthGT-Four]

You can swap the housings over if you use the turbine wheel to match the housing but then you don't have a ct20b anymore

Haha yea ill swap out my good steel turbine wheel for a premium grenade ceramic wheel......

[loudstealthGT-Four]

That will most likely sort my boost creep issues too.....

[92mr2paddy]

weld up internal gate and use external wastegate, never have boost creep again.

[loudstealthGT-Four]

Had considered that, but with the cost of welding an external to the factory cast manifold properly, which was about $250-300 and then the cost of a new wastegate, it just wasn't worth it to me.