Thanks to Zen Results are
#1
Thanks to Zen Results are
Well after a 4 week wait my babys back and the resukts are very good
my06 2.5 sti uk
mods are
forged pistons
rods
headers heat wrapped
garrett hybrid turbo
clutch
ingectors
and more
made 461bhp / 465nm on the rollers today
and drive brilliant so smooth
so if anyone is thinking if of having any work done give paul a ring @ zen performance highly recommended
Thanks Tony
my06 2.5 sti uk
mods are
forged pistons
rods
headers heat wrapped
garrett hybrid turbo
clutch
ingectors
and more
made 461bhp / 465nm on the rollers today
and drive brilliant so smooth
so if anyone is thinking if of having any work done give paul a ring @ zen performance highly recommended
Thanks Tony
#4
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Tony I'm very interested in what parts etc you fitted as I have a MY07 STi that I want to mod but the pistons are my concern. Could you PM me with some more detail on makes and prices please.
Thanks
Marc
PS Great Results
Thanks
Marc
PS Great Results
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#8
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lb/ft would make sense with what you have had done on a 2.5 - nice figures
Good mods that you have had done though - will make it bullet proof to a large extent and pull like a steam train
I will need to change pistons/rods/turbo in mine at some point, although no-one actually knows the limits of the 06 STi pistons yet despite talk of them being made of chocolate.
Good mods that you have had done though - will make it bullet proof to a large extent and pull like a steam train
I will need to change pistons/rods/turbo in mine at some point, although no-one actually knows the limits of the 06 STi pistons yet despite talk of them being made of chocolate.
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Not chocolate, "hypereutherics". I read that Subaru's WRC cars have changed to hypereuteric cast since the forged ones wore out the motors too quickly. (Forged pistons expand more under heat so looser tolerances are used. Those looser tolerances lead to more piston slap.) However, Sti (Subaru or whowever) is claiming that the new hypereuteric cast pistons are approx. 120% stronger.Hypereutectic aluminum pistons are made from an alloy with hi-silicon content of 16% to 18%. Hypereutectic aluminum has 15% less thermal expansion than conventional piston alloys. The silicon reduces heat transfer, allowing the piston to run cooler. The silicon gives the hypereutectic it’s thermal & wear characteristics (improves resistance to scuffs and seizure). As long as the silicon granularity is controlled (kept small) the piston should be stronger than regular cast alloy pistons. However, when granularity increases the mechanical properties of the material drop substantially. I wonder how the pistons will react to overboosted engines and higher combustion chamber temperatures? I just wonder where the real limits of the pistons are, where reliability really starts to drop off, the approximate power level. Could be 350chp, could be 500chp. I wish we knew.
#10
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so do i
Would save an expensive unecessary piston/rod replacement if these will cope with up to 500
but who wants to be the one that pushes it just over what they can cope with? ... not me (or at least not intentionally anyway)
Shadower - have you had to run the engine in again?
Would save an expensive unecessary piston/rod replacement if these will cope with up to 500
but who wants to be the one that pushes it just over what they can cope with? ... not me (or at least not intentionally anyway)
Shadower - have you had to run the engine in again?
#11
thats why i changed my pistons etc as before the build with the fmic and turbo td06 it was runing 375bhp and didnt want to push my luck
i did 500 easy miles first then went back yestarday for the full tune
i did 500 easy miles first then went back yestarday for the full tune
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I think that pistons are not problem with new motors (2.5). Problem is because same piece of 2.0 block is raised to 2.5. Aquamist is possible solution or something to reduce overheating.
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#21