.42/.48 vs. .60/.63 t3 comparison pics?
01-16-2007, 12:35 PM
#4
1.5 BAR
Join Date: Oct 2004
Posts: 877
Re: .42/.48 vs. .60/.63 t3 comparison pics?
Here'S the most common 0.45 a/r t3:
and here'S the 60 trim:
Physically, both turbos look the same because they are made from the same basic housings. The a/r difference doesn'T show externally.
turbine wheel is same size on both, backplate also the same. Compressor wheel is 6 mm larger.
Why not doing the hybrid: 0.48/0.60 ?? THat's a nice turbo that kicks in real hard.
and here'S the 60 trim:
Physically, both turbos look the same because they are made from the same basic housings. The a/r difference doesn'T show externally.
turbine wheel is same size on both, backplate also the same. Compressor wheel is 6 mm larger.
Why not doing the hybrid: 0.48/0.60 ?? THat's a nice turbo that kicks in real hard.
01-18-2007, 04:02 PM
#6
1.5 BAR
Join Date: Oct 2004
Posts: 877
Re: .42/.48 vs. .60/.63 t3 comparison pics?
THey both have a peak efficiency of 74% Which is common of T series compressors.
(GT turbos have efficiencies of 78-80%.)
but as the charts show, a turbo performs at it's PEak efficiency only for a certain HP and boost range. For every compressor, power kicks in at different HP and efficiency drops past a certain HP.
Now with that in mind, the difference between the two is that the t3 60 trim can sustain this 74% efficiency all the way to 250 HP, which is 90 HP more than the 45 trim !!
I came to consider that it'S better to use a turbo at 70% eff. at least.
With that in mind, at around 15 psi:
the 45 trim is a 200HP turbo
the 60 trim is a 280HP turbo
(GT turbos have efficiencies of 78-80%.)
but as the charts show, a turbo performs at it's PEak efficiency only for a certain HP and boost range. For every compressor, power kicks in at different HP and efficiency drops past a certain HP.
Now with that in mind, the difference between the two is that the t3 60 trim can sustain this 74% efficiency all the way to 250 HP, which is 90 HP more than the 45 trim !!
I came to consider that it'S better to use a turbo at 70% eff. at least.
With that in mind, at around 15 psi:
the 45 trim is a 200HP turbo
the 60 trim is a 280HP turbo
01-20-2007, 10:45 AM
#8
1.5 BAR
Join Date: Oct 2004
Posts: 877
Re: .42/.48 vs. .60/.63 t3 comparison pics?
yeah a .48/.60 t3 60 trim will be ideal on an engine like yours (around 130 hp)
a 45 or 50 trim compressor will work but you're almost sure to max it out at 8 psi so yes it's reliability is affected, will boost hot air in your engine and give you a poor top end.
for example the t3 .48/.60 turbo is also perfect for similar flow engines: focus zetec 2.0 and integra b18B. oh, and watercooling is a most everytime you use the stage 1 0.48 turbine.
a 45 or 50 trim compressor will work but you're almost sure to max it out at 8 psi so yes it's reliability is affected, will boost hot air in your engine and give you a poor top end.
for example the t3 .48/.60 turbo is also perfect for similar flow engines: focus zetec 2.0 and integra b18B. oh, and watercooling is a most everytime you use the stage 1 0.48 turbine.
01-20-2007, 11:07 AM
#9
1.0 BAR
Thread Starter
Join Date: Jan 2006
Posts: 295
Re: .42/.48 vs. .60/.63 t3 comparison pics?
im going to use the .60/.63 t3 of a nissan not water cooled, i don't mind some lag time,
my mazda bp motor redlines a 7k,also i have the nissan turbo with the 7 bolt wastegate and 4 bolt downpipe.
i want to port the wastegate, but how do i get the flapper door off the wastegate housing?
also breaking free the bolts is a bitch,have and tips or special wrenches to get in the tight arears,
have you ever used kroil oil(penatrating oil) for lossen them?
kroil oil claims it creeps, penetrates to 1 millionth inch spaces, ever head of it or used to?
here is a link
http://www.jdheritage.net/DeerelyDep...Items/4001.asp
my mazda bp motor redlines a 7k,also i have the nissan turbo with the 7 bolt wastegate and 4 bolt downpipe.
i want to port the wastegate, but how do i get the flapper door off the wastegate housing?
also breaking free the bolts is a bitch,have and tips or special wrenches to get in the tight arears,
have you ever used kroil oil(penatrating oil) for lossen them?
kroil oil claims it creeps, penetrates to 1 millionth inch spaces, ever head of it or used to?
here is a link
http://www.jdheritage.net/DeerelyDep...Items/4001.asp
