Outer Limits 4x4 Board

im currently putting a ct20 turbo on my 2.8 hilux
and im currently reminded that this turbo is probably a little to small for the engine..

(1) what turbo would be the best suited??

(2) where do i buy this turbo?

(3) how much?

(4) only new, or second hand available?

HTH wrote:im currently putting a ct20 turbo on my 2.8 hilux
and im currently reminded that this turbo is probably a little to small for the engine..

(1) what turbo would be the best suited??

(2) where do i buy this turbo?

(3) how much?

(4) only new, or second hand available?

Alot of people say its too small alot also dissagree. it depends on what rev range you want to use it in.

The Ct20 runs out of efficiency about 3000rpm which with my gear ratios is perfect.

The beauty of a ct 20 set up is that for 500 bucks second hand your away.

The beauty of a denco or safari or any other top brand is that they are modern technology which will perform better but at about 6 times the price. work on 3 grand or more deoending on your skills and who fits it etc. they are rare to find second hand.

put the ct20 and see if your happy? it took 6 months before i finally got mine running the way i wanted mainly due to bad wastegates and not having fit up my pyro.

Now with 10psi and a bit of extra fuel but with safe exhaust temps i can use 1 - 2 gears higher on the same roads and stay on the speed limit on all but the steepest hills. I can even overtake without huge run ups etc. overall im now very happy with thew ct20. and would not bother upgrading.

yeh was always planning on fitting up the ct20 just wanted some more opinions on it and possible upgrades.
herd anything about the ct26? been told there the upgraded (and better) version on the ct20.
when you say it loses effiency at 3000 does it stop boosting? i.e if u have a boost gage connected does it drop boost around 3000rpm?

thanks, HTH

Yeah they start to drop off around 300rpm.

The best turbo i hav seen is a mitsubishi TD04. Its off the mitsubishi evo cars. they come on about 1100rpm (opposed to 1800rpm - ct20) and they drop off around 3400rpm. Friend had one for years and it outdoes all the new hiluxs and bt50's and sh#t.

Pick them up for about $800 rebuilt.

she is alittle hair dryer and sings her little but off ,but it a great turbo just cant take a lot of boost or cant be trusted with alot so if you think 12-13psi is enough then its for you, if you want more its not .
The t26 is an easey up grade later on


opposed to 1800rpm - ct20
sorry no way is this true and i have the dyno runs to prove it
turbos dont dye off the engine does itll hold 12psi till the engine explodes or both do,to much boost or over boosting is more likely to kill a turbo
mine was still at 11psi at 3500rpm

beinthemud wrote:she is alittle hair dryer and sings her little but off ,but it a great turbo just cant take a lot of boost or cant be trusted with alot so if you think 12-13psi is enough then its for you, if you want more its not .
The t26 is an easey up grade later on


opposed to 1800rpm - ct20
sorry no way is this true and i have the dyno runs to prove it
turbos dont dye off the engine does itll hold 12psi till the engine explodes or both do,to much boost or over boosting is more likely to kill a turbo
mine was still at 11psi at 3500rpm

yeah i agree half my problem was hitting 15 psi - it will keep going past 3grand, but tends to heat the air alot as it works harder as it is no longer efficient.


note the ct 26 is not a simple bolt on and would require different manifold or bolt pattern etc probably not that hard, but not a simple bolt on bolt off.

it was used on a number of yota petrols so you maty find some are suitable for diesel apps some arent.

for everyone who says a ct20 is to small someone will say a ct26 is too large and will spool up later.

thehanko wrote:

beinthemud wrote:she is alittle hair dryer and sings her little but off ,but it a great turbo just cant take a lot of boost or cant be trusted with alot so if you think 12-13psi is enough then its for you, if you want more its not .
The t26 is an easey up grade later on


opposed to 1800rpm - ct20
sorry no way is this true and i have the dyno runs to prove it
turbos dont dye off the engine does itll hold 12psi till the engine explodes or both do,to much boost or over boosting is more likely to kill a turbo
mine was still at 11psi at 3500rpm

yeah i agree half my problem was hitting 15 psi - it will keep going past 3grand, but tends to heat the air alot as it works harder as it is no longer efficient.


note the ct 26 is not a simple bolt on and would require different manifold or bolt pattern etc probably not that hard, but not a simple bolt on bolt off.

it was used on a number of yota petrols so you maty find some are suitable for diesel apps some arent.

for everyone who says a ct20 is to small someone will say a ct26 is too large and will spool up later.

all very good points
both turbos have been on my 2.4 all dyno'ed with both muddys and road tyres 33/13.5 8inch steel rims and small roads on 7inch alloys
t26 500 - 4000rpm 21psi
ct20 200ish - 3500 12psi ideal 15psi only a matter of time for the bang bang
the way i look at it is if standard 2.4-2.8 diesel ct20 or t26
modified 2.4-2.8 t26

beinthemud wrote:

thehanko wrote:

beinthemud wrote:she is alittle hair dryer and sings her little but off ,but it a great turbo just cant take a lot of boost or cant be trusted with alot so if you think 12-13psi is enough then its for you, if you want more its not .
The t26 is an easey up grade later on


opposed to 1800rpm - ct20
sorry no way is this true and i have the dyno runs to prove it
turbos dont dye off the engine does itll hold 12psi till the engine explodes or both do,to much boost or over boosting is more likely to kill a turbo
mine was still at 11psi at 3500rpm

yeah i agree half my problem was hitting 15 psi - it will keep going past 3grand, but tends to heat the air alot as it works harder as it is no longer efficient.


note the ct 26 is not a simple bolt on and would require different manifold or bolt pattern etc probably not that hard, but not a simple bolt on bolt off.

it was used on a number of yota petrols so you maty find some are suitable for diesel apps some arent.

for everyone who says a ct20 is to small someone will say a ct26 is too large and will spool up later.

all very good points
both turbos have been on my 2.4 all dyno'ed with both muddys and road tyres 33/13.5 8inch steel rims and small roads on 7inch alloys
t26 500 - 4000rpm 21psi
ct20 200ish - 3500 12psi ideal 15psi only a matter of time for the bang bang
the way i look at it is if standard 2.4-2.8 diesel ct20 or t26
modified 2.4-2.8 t26

you ran 21 psi through a 3L jebus! how much of it was still toyota origion?

you ran 21 psi through a 3L jebus! how much of it was still toyota origion?

was that in reply to what i said ?
if so sorry ,i think you may have missunderstood what i meant, a t26 can run up to 21psi of course the would also mean you would have to have a engine that could cope with it, run a 2lt which i give 13psi

so the ct26 and where from (near townsville). Are the oil lines and water lines the same as ct20?
i understand a new exhaust manifold will have to get made up.

What safe boost should i run if its intercooled.. 12-15psi?
when does the turbo start to spool up.., and does it die off around 4000 rpm?

You could lower the compression by getting a thicker head gasket made up, therefore lowering compression ratio.

the t26 oil lines tend to be bigger
water lines are a little different but nothing technical
new manifold
12-15 is fine (no engine mods)
intercooling will cause alittle more lag
i dont run an intercooler so around 300-400rpm roughly
well if your diesel is not modified itll probably die at 4000rpm
i stick around 3000 or 3500 seems to be angry enough
Townsville weres that
sorry just kidding cant answer that one