DIY Hybrid CT9 using a Supra CT12 *

R

RGM1800

Member +
my ct9 died so i just did a hybrid conversion few months ago. just want to share some reference pics of ct9 and ct12.

compressor housing

ct12 has a bigger and deeper canals compared to ct9
30042009220.jpg

30042009216.jpg

30042009219.jpg


Exhaust housing
ct9 has a bigger wastegate port compared to ct12.
ct9-square flange
ct12-triangular flange
30042009204.jpg

30042009201.jpg

30042009203.jpg


compressor wheel
as you can see the ct12 has a bigger compressor wheel. but the design of the wheels are almost the same.
30042009213.jpg

30042009212.jpg

30042009211.jpg


exhaust wheel
again ct12 is bigger than the ct9
30042009211.jpg

30042009206.jpg

30042009207.jpg

30042009210.jpg


actuator
the ct9 actuator has 2 ports for hi and lo
the ct12 has only 1 port but its actuator is stiffer than ct9s
30042009179.jpg

30042009178.jpg


assembled and installed

02052009250.jpg

02052009251.jpg

04052009255.jpg

04052009256.jpg

09052009267.jpg

09052009271.jpg


enjoy:rockon:
 
S

Sparky

Member +
Good effort mate take it your using the ct12 comp housing and wheels aswell?

Any noticeable difference? :)
 
R

RGM1800

Member +
billybob said:
did you drive the car with it lad how does it perform
Click to expand...

yeah its on the car right now.
car runs fine. mild upgrade from ct9
faster spool at low boost level (spools 2k rpm @ 0.55 bar)
good power band from low to top end.
more aggressive than ct9.
 
billybob

billybob

Untrusted Seller
RGM1800 said:
yeah its on the car right now.
car runs fine. mild upgrade from ct9
faster spool at low boost level (spools 2k rpm @ 0.55 bar)
good power band from low to top end.
more aggressive than ct9.
Click to expand...

so it seems a good setup well done:)
 
Gilly2006

Gilly2006

Member +
chinesemafia said:
so if he just borred out the ct9 exhauts housing then i dont see the need to have the turbo balanced
Click to expand...

he has taken the impellor off the shaft and i would have thought at the same time changed the bearings and seals.
it needs to be rebalanced.
otherwise the turbo is going to run a few miles and it will fail.

you can mark the impellors up before its stripped, but its always best to get a specialist to do it.
esspecially with the CT9-CT12 because there not a big turbo.
 
C

chinesemafia

Member +
so if i dont take the ct12 apart then just boring out the ct9 housing to the same size as the ct 12 and putting it back together would be fine then right ??
 
H

hapster

Fresh Recruit
Gilly2006 said:
he has taken the impellor off the shaft and i would have thought at the same time changed the bearings and seals.
it needs to be rebalanced.
otherwise the turbo is going to run a few miles and it will fail.

you can mark the impellors up before its stripped, but its always best to get a specialist to do it.
esspecially with the CT9-CT12 because there not a big turbo.
Click to expand...

its all intact. all bearings seals comp wheel and exhasut wheel are from ct12
 
R

RGM1800

Member +
gorganl2000 said:
looks good, can be a relatively simple job (depending) and most importantly you are happy with it....
repped
Click to expand...

thanks for the rep. choosing turbos depends on the powerband you like and for a specific application. its a simple job. just send it to a good machine shop and have somebody to assemble it. ct12s actuator is better than c9s so youl feel the difference in the way it holds boost and the way it approaches boost. sharper than ct9
 
You must log in or register to reply here.
Top