Go back to home

new CT26 turbo

Page: < 12 Showing page 2 of 2 - Powered by APG vNext Trial
Author
Guest
MR2 Enthusiast
  • Total Posts : 36
  • Scores: 0
  • Reward points: 1547
  • Joined: 4/6/2011
  • Status: online
Re: new CT26 turbo Thursday, November 29, 2018 12:52 AM (permalink)
0
Take pipes / Intercooler out, use “petrol” to clean.
#16
Flyboy
MR2 Scholar
  • Total Posts : 65
  • Scores: 21
  • Reward points: 3195
  • Joined: 5/29/2011
  • Status: offline
Re: new CT26 turbo Tuesday, March 26, 2019 5:33 PM (permalink)
0
Any comments on the Garrett GT28 RS Disco Potato Turbo as a replacement for a CT20b?
post edited by Flyboy - Wednesday, April 03, 2019 8:15 AM

"The problem with quotes you find on the Internet is that you can't be sure how accurate they are." - Abraham Lincoln
#17
Carmikey
MR2 Deity
  • Total Posts : 1969
  • Scores: 260
  • Reward points: 6437
  • Joined: 4/23/2012
  • Location: Greenwith 5125, S.A. Australia
  • Status: offline
Re: new CT26 turbo Tuesday, March 26, 2019 11:14 PM (permalink)
0
Flyboy
Any comments on the Garrett GT28 RS Disco Potato Turbo as a replacement for a CT26?


Potato is a great little replacement turbo, a lot better than the 26. Although they are not a direct fit replacement unit. You will have to change your intercooling pipework, that can be quite costly >$600 if having someone make / weld ally pipes for you.
#18

92 Hard Top
MR2 Deity
  • Total Posts : 520
  • Scores: 43
  • Reward points: 5815
  • Joined: 4/7/2011
  • Location: Adelaide SA Australia
  • Status: offline
Re: new CT26 turbo Thursday, March 28, 2019 1:25 AM (permalink)
0
I have done this already your up for some money.
#19
Flyboy
MR2 Scholar
  • Total Posts : 65
  • Scores: 21
  • Reward points: 3195
  • Joined: 5/29/2011
  • Status: offline
Re: new CT26 turbo Friday, March 29, 2019 1:58 PM (permalink)
0
Hmm...thought it would bolt right on
Is there a rebuild kit for my CT20b?
I'm going to have the motor fully rebuilt soon and I imagine the Turbo will need a refresh or a new one.
post edited by Flyboy - Wednesday, April 03, 2019 8:16 AM

"The problem with quotes you find on the Internet is that you can't be sure how accurate they are." - Abraham Lincoln
#20
Flyboy
MR2 Scholar
  • Total Posts : 65
  • Scores: 21
  • Reward points: 3195
  • Joined: 5/29/2011
  • Status: offline
Re: new CT26 turbo Wednesday, April 03, 2019 8:17 AM (permalink)
0
Have just edited my posts...I have a CT20b rev 3 Turbo not a 26...my bad.
Hope the advice is consistant with that alteration?

"The problem with quotes you find on the Internet is that you can't be sure how accurate they are." - Abraham Lincoln
#21

tuban
MR2 Aficionado
  • Total Posts : 75
  • Scores: 8
  • Reward points: 4103
  • Joined: 10/27/2012
  • Status: offline
Re: new CT26 turbo Thursday, September 12, 2019 8:09 AM (permalink)
0
Hi Guys, I'm back on the turbo horse!  As per various suggestions I've had compression checked and pretty uniform and around 170psi.  Plugs were grey, dry, not oiled.   I've fitted a catch can as suggested earlier.  Still smoking so I'm back to turbo and bought a $1200 Mamba turbo rather than mess around with rebuild.  Came with a nice set of hoses.   Which leads to my question.  The wastegate actuator on my original CT26 has a pipe nipple on it which has a hose to a nipple early in the compressor snail path.   The Mamba turbo has this point blanked off and a nipple way at the end of the compressor snail, just between the "CT26" label and the outlet.  My Toyota CT26 didn't have any way to connect at this point but I noticed it seemed that the casting was thicker there, as if Toyota had allowed for this?   Should I run the actuator hose to the point that Mamba seem to intend or switch back to the Toyota pressure point earlier in the snail.  The forum doesn't easily allow me to add a pic, I don't know how to do this easily via URL, sorry.  I've tried to get Mamba to reply but no luck.
 
#22
Guest
MR2 Enthusiast
  • Total Posts : 36
  • Scores: 0
  • Reward points: 1547
  • Joined: 4/6/2011
  • Status: online
Re: new CT26 turbo Thursday, September 12, 2019 11:02 AM (permalink)
0
Run it where mamba has it.

Monitor your boost pressure gauge vs actuator movement.

For the love of your mr2. Please regularly get your injectors out and ultrasonic cleaned and flow tested. Please invest in a wideband for air fuel rations especially if dialing up boost (just race parts - cheap for quality).
post edited by TonyMR2 - Thursday, September 12, 2019 11:06 AM
#23
tuban
MR2 Aficionado
  • Total Posts : 75
  • Scores: 8
  • Reward points: 4103
  • Joined: 10/27/2012
  • Status: offline
Re: new CT26 turbo Tuesday, September 17, 2019 11:25 PM (permalink)
0
Thanks Tony.  And for the other suggestions.  I need to sort out the oil in exhaust before going to wideband sensor, my exhaust seemed to foul the last w/b sensor that I had fitted so I went back to std one.  I'm not even sure if it is working:-(
#24
TwoDogs
MR2 Aficionado
  • Total Posts : 312
  • Scores: 15
  • Reward points: 3457
  • Joined: 9/20/2013
  • Status: offline
Re: new CT26 turbo Wednesday, October 16, 2019 9:43 PM (permalink)
+1 (1)
I don't know what it's like if your intercooler has collected a heap of oil from a bad turbo, but most of the smoke symptoms you described sound like engine problems to me. Especially things like after the engine sits for a while, then on startup gives a puff of blue, sounds like valve seals. Another symptom of valve seals is after engine braking for a corner as you drive out of the corner another puff of smoke, then nothing. Rings is under power up a hill, smoke more continuously. Head gasket...blue smoke is more like valve seals in that oil needs to be sucked in, ie throttle shut.
#25
Page: < 12 Showing page 2 of 2 - Powered by APG vNext Trial
Jump to:
© 2025 APG vNext Trial Version 5.5