Is it the MIVEC or Turbo????
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From: Lake Mary,FL
Originally Posted by FahKen Evo!
I have also heard that too, why is that?
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From: Lake Mary,FL
Originally Posted by FahKen Evo!
IDK, I mean cams iz cams, should they open a WRX up for power?
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Originally Posted by Gruppe-S
Hey guys,
Wanted to post up some test data for the Helix RNA camshafts. The idle is great (not perceivably worse than stock), the low end power loss is slight, and the mid-range to top end power was very impressive (20+ whp!). This was all done on a 2.0 car, these cams should absolutely rock on a 2.5 bottom end. Graphs are below. Cheers
Gary
Gruppe-S
Wanted to post up some test data for the Helix RNA camshafts. The idle is great (not perceivably worse than stock), the low end power loss is slight, and the mid-range to top end power was very impressive (20+ whp!). This was all done on a 2.0 car, these cams should absolutely rock on a 2.5 bottom end. Graphs are below. Cheers
Gary
Gruppe-S
Originally Posted by EVIL_EVO_VIII
Its bc the way the motor is set up, its the opposite of how our motor is set up. Also keep in mind that our motor has forged rods and pistons and would respond better to mods
Wrong. we have cast pistons and forged rods.
If you want to know its the Mivec or the Turbo then just buy an EVOIX turbo and out it on a stock 8 with a tune and then compare it to a nine with a tune. No way to know other than that.
I know that its both the Mivec and the turbo
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From: Lake Mary,FL
Originally Posted by Az3ar
Wrong. we have cast pistons and forged rods.
If you want to know its the Mivec or the Turbo then just buy an EVOIX turbo and out it on a stock 8 with a tune and then compare it to a nine with a tune. No way to know other than that.
I know that its both the Mivec and the turbo
If you want to know its the Mivec or the Turbo then just buy an EVOIX turbo and out it on a stock 8 with a tune and then compare it to a nine with a tune. No way to know other than that.
I know that its both the Mivec and the turbo
Well from all the info being posted and gathered over time, seems that 90% of the power is coming from the turbo, is should gain at least 20-25whp over the VIII turbo w/ same mods on a IX, the IX would have a better spool due to the MIVEC
Originally Posted by EVIL_EVO_VIII
Its bc the way the motor is set up, its the opposite of how our motor is set up. Also keep in mind that our motor has forged rods and pistons and would respond better to mods
Also what do you mean by opposite of how our motor is setup???Different is the word.
We are inline they are boxer thats all to it.
there are different engines
VR6 style which is narrow V
V engines
inline
boxer
Originally Posted by EVIL_EVO_VIII
The power gains on the suby with cams WILL NOT be the same as the Evo...
Well from all the info being posted and gathered over time, seems that 90% of the power is coming from the turbo, is should gain at least 20-25whp over the VIII turbo w/ same mods on a IX, the IX would have a better spool due to the MIVEC
Well from all the info being posted and gathered over time, seems that 90% of the power is coming from the turbo, is should gain at least 20-25whp over the VIII turbo w/ same mods on a IX, the IX would have a better spool due to the MIVEC
Stis make good power if tuned right dont ignore that part
EJ20, EJ25's to 4G63 is apples to oranges there are so many differences between the motors... IOne noticable difference between our motors is the fact that the boxer motors have very short strokes and big bores, this has a major effect on the way a motor delivers power.
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From: Lake Mary,FL
Originally Posted by Az3ar
Also what do you mean by opposite of how our motor is setup???Different is the word.
We are inline they are boxer thats all to it.
there are different engines
VR6 style which is narrow V
V engines
inline
boxer
We are inline they are boxer thats all to it.
there are different engines
VR6 style which is narrow V
V engines
inline
boxer
Originally Posted by Az3ar
Stis make good power if tuned right dont ignore that part
Originally Posted by WillEatUrSTi
EJ20, EJ25's to 4G63 is apples to oranges there are so many differences between the motors... IOne noticable difference between our motors is the fact that the boxer motors have very short strokes and big bores, this has a major effect on the way a motor delivers power.
Last edited by EVIL_EVO_VIII; Mar 17, 2006 at 03:53 PM.
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From: Birmingham, AL
One blatant reason is probably that Subies need four cams, to our two. That combined with it being so hard to get at them makes devleopment slower to come about. The same goes with V-engines to an extent.
Subaru's don't nearly have the aftermarket support as us and their parts cost considerably more. I was scanning stuff for suby's and I found a stage 3 bottom end going for $8000, for this kind of cash I could buy stage 3 stroker motor, turbo upgrade and a standalone and prolly then some. It's no wonder modifing Evo's is more appealing than building an STi. Who wants to spend more and go slower?
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From: In my house
Whoa......
Originally Posted by Big Boost
With the above being said, if you added a stroker to the MIVEC system, how much could you move the power band down & use the variable timing to assist in spooling up a larger than stock turbo?
Wouldn't this be the ideal set-up for a STREET not a race, but a street car? With the additional displacement & variable valve timing to assit in decreasing spool-time for the larger turbo.
If this set-up can kick in the turbo sooner it would allow for a larger powerband & still allow for the power not to drop off in the higher rpms.
Would it be possible for a set-up like this be able to reduce spool time by 700rpms vs a stock block 2.0?
I read in one of David's posts that his new 35R hits 20lbs of boost by 4100 on a stock 2.0 block & head:
https://www.evolutionm.net/forums/sh...&postcount=116
Using this as an example, IF the addition of a stroker and MIVEC could assist in spooling the turbo sooner (by 700rpms) you could have a powerband from 3400rpm to about 7500rpm. That would be close to if not better than stock!
I know Al from Dynoflash has tuned a car with this set-up & a 35R, but I haven't seen it compared to a Evo 8 with the same or similuar set-up.
Am I missing something or isn't something this ideal set-up?
Wouldn't this be the ideal set-up for a STREET not a race, but a street car? With the additional displacement & variable valve timing to assit in decreasing spool-time for the larger turbo.
If this set-up can kick in the turbo sooner it would allow for a larger powerband & still allow for the power not to drop off in the higher rpms.
Would it be possible for a set-up like this be able to reduce spool time by 700rpms vs a stock block 2.0?
I read in one of David's posts that his new 35R hits 20lbs of boost by 4100 on a stock 2.0 block & head:
https://www.evolutionm.net/forums/sh...&postcount=116
Using this as an example, IF the addition of a stroker and MIVEC could assist in spooling the turbo sooner (by 700rpms) you could have a powerband from 3400rpm to about 7500rpm. That would be close to if not better than stock!
I know Al from Dynoflash has tuned a car with this set-up & a 35R, but I haven't seen it compared to a Evo 8 with the same or similuar set-up.
Am I missing something or isn't something this ideal set-up?
I would like to hear more info on the above, if we could.....
