3SGTE CT26 CT20b Exhaust housing

loudstealthGT-Four · Post by **loudstealthGT-Four** » Sat Aug 24, 2013 10:51 pm

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 · Post by **gt4dude** » Sun Aug 25, 2013 1:05 pm

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 · Post by **iOnic** » Sun Aug 25, 2013 1:46 pm

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 · Post by **loudstealthGT-Four** » Sun Aug 25, 2013 1:51 pm

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

To hard basket indeed.

Thanks Tyler

iOnic · Post by **iOnic** » Sun Aug 25, 2013 1:53 pm

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 :lol:

loudstealthGT-Four · Post by **loudstealthGT-Four** » Sun Aug 25, 2013 1:57 pm

iOnic wrote: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 · Post by **loudstealthGT-Four** » Sun Aug 25, 2013 1:58 pm

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

92mr2paddy · Post by **92mr2paddy** » Sun Aug 25, 2013 4:59 pm

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

loudstealthGT-Four · Post by **loudstealthGT-Four** » Sun Aug 25, 2013 5:42 pm

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.