do the subaru 2.5's spool turbos faster then 2.0 evo's?
#1
do the subaru 2.5's spool turbos faster then 2.0 evo's?
In general do the subaru 2.5's spool turbos faster then 2.0 evo's? If given the same size turbo for each car of course.
I would think the half liter extra would make noticably faster spool but not sure if the evo engine flows better thus making up for the smaller engine.
any examples?
I would think the half liter extra would make noticably faster spool but not sure if the evo engine flows better thus making up for the smaller engine.
any examples?
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The Evo spools quicker. The Evo turbos are right on the outlet of the exhaust manifold. On the Wrx/Sti you have long unequal length headers and then an up-pipe to get to the turbo. Now one would argue that the intake track is shorter on the Wrx/Sti so the net-effect of boost getting into the engine is about the same. A lower mount intercooler on the Sti is FTL.
#5
sounds at least 500rpm quicker then the evo
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The Evo spools quicker. The Evo turbos are right on the outlet of the exhaust manifold. On the Wrx/Sti you have long unequal length headers and then an up-pipe to get to the turbo. Now one would argue that the intake track is shorter on the Wrx/Sti so the net-effect of boost getting into the engine is about the same. A lower mount intercooler on the Sti is FTL.
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no were not talking about stock turbos here. were talking about a scenario with same turbo on each car. to get a good comparison, we'd have to do aftermarket turbos, both undivided housings like gt30r or gt35r comparisons or billet 6262's. same turbo on each car
someone with a lot of time on their hands do some searching on spool times on http://forums.nasioc.com/ and post back here. im curious on how much of a difference there is
someone with a lot of time on their hands do some searching on spool times on http://forums.nasioc.com/ and post back here. im curious on how much of a difference there is
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ar fab built shortblock with 9.5:1 arias pistons, manley rods and blueprinted bottom end.
stock heads and cams.
modified u.r. gt3582r kit with .82 a/r v-band discharge turbine.
tial 44 with 1.4 bar springs.
maddad v2 header and whisper catback.
perrin fmic.
deatschwerks 1,150cc top feeds.
boomba racing fuel rails, fuelab regulator and bosch 044.
4" filter on turbo inlet.
hydra 2.6.
tgv deletes.
93 octane pump tune is at 21 psi.
93 pump + 5 gallons Q16 race tune (roughly 40/60 mix) was at 28 psi.
corrected it was 419 whp on pump and 540 whp on the mix. it had more but the bottom end was built for 550 whp so i stopped there.