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exhaust
Posted: Sun Oct 21, 2007 10:25 pm
by dirty dirty 4x4
I have a 2.4 2LT surf and i want a 2.5" exhaust but my mate who works on airoplanes that will be making it for me says that my 1.3/4 exhaust will be more than suficient, I want a 2 1/2 exhaust, am i just in wanting this and what is a good argument
Posted: Sun Oct 21, 2007 10:49 pm
by toyrex
3" mandrel bend of the turbo 2.5" exhaust will improve torque
Posted: Sun Oct 21, 2007 10:53 pm
by Sic Lux
Run trampoline pipe and it dumps at the back of the cab on mates 2.8 turbo and works a treat and yes he is a tight ass.
Posted: Mon Oct 22, 2007 12:30 am
by Nat84
on any turbo vehicle i would go 3" mandrel bent from turbo to the back with straight through mufflers
Posted: Mon Oct 22, 2007 7:03 am
by 4be
i had a 2lt motor in my old lux. had a 2.5 mendrel exhuast on it and it went like a shower of s@#t. if you know what i mean.
The little exhaust you have is not sufficient for the turbo setup. i know this from experience.
Posted: Mon Oct 22, 2007 2:56 pm
by Guy
I had the factory drinking straw replaced recently to a 2.25 inch sysem (for ease of fitment basically) and my EGTS (exhaust gas temps) have dropped by about 60 to 80 degrees c across the range .. and that is running on warmer days .. so the change may be even greater.
I have an autometer EGT guage with the thermocouple pre turbo (just between the turbo outlet and number 2 exhaust port) I have also noticed that the system comes up to full boost around 6-700rpm lower.
This is on a 2lt also runinng marginally more fuel, fresh injectors and pretty much stock everything else.
Posted: Mon Oct 22, 2007 5:08 pm
by YB.LOW4
3" is abit pointless as the flange on the back of the turbo is only 2 1/2" on a 2lt. therefore put a 2 1/2 mandrel bent on with 1 straight thru muffler and you will definutely see the difference