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Old 01-14-2006, 11:49 PM   #1
spoolinsuby
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Default STi Cams or WRX Cams??

I'm in a bit of a dilemma. I have a complete STi longblock that is going in my WRX. I will be using WRX style engine managament so I wont have the AVCS. I have a post in the convertion forum and I was told that I will need to use the WRX intake cams to use the WRX cam sensor since the STi sensors wont work. With the AVCS not active would the STi cams out perform the WRX cams?

Thanks,
Frankie
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Old 01-15-2006, 01:37 AM   #2
perkowskiforpope
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I find myself asking the same question. Why wouldn't you get a new type of EM to run the AVCS?
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Old 01-15-2006, 03:11 AM   #3
spoolinsuby
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Because I already spent $1700 on the AEM. To use the AEM with AVCS I would need an STi unit and an STi wiring harness for the throttle by wire.
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Old 01-15-2006, 03:33 AM   #4
bugeyes
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If your looking for Subaru cams. The "lumpiest" cams subaru ever fitted were Sti version 5. They were the last before the avcs was introduced. At a valve lift of 0.050" they ran 211 degree duration. I think you will find most other non avcs came are in the region of 206 degree. I would expect avcs cams to be even shorter duration, however they can get away with that due to the acvs.
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Old 01-15-2006, 04:49 AM   #5
spoolinsuby
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Thanks for the help. Are these V5 cams RA or STi cams or are they the same? How hard do you think they will be to find?
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Old 01-15-2006, 07:49 AM   #6
bugeyes
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Quote:
Originally Posted by spoolinsuby
Thanks for the help. Are these V5 cams RA or STi cams or are they the same? How hard do you think they will be to find?
I'm pretty sure they must be sti. I have 2 sets of wrx cams from the same year and they are not long duration.
Finding a set of good ones is the hard part. Most other people know about the V5 sti cams and that makes them harder to get.
In the end for tha sake of a couple of hundred dollars you may be better off getting new billets made to suit exactly what you want. That's what I had done.
If you want a set of cams you can have them free and do as you want with them. Only pay for shipping from Aust.
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Old 01-15-2006, 08:47 AM   #7
PeteDucati
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Quote:
Originally Posted by bugeyes
If your looking for Subaru cams. The "lumpiest" cams subaru ever fitted were Sti version 5. They were the last before the avcs was introduced. At a valve lift of 0.050" they ran 211 degree duration. I think you will find most other non avcs came are in the region of 206 degree. I would expect avcs cams to be even shorter duration, however they can get away with that due to the acvs.
Crower Stage II cams are 220 at .050 with a lift of .400". Idle is not lumpy at all.. it idles at ~750rpm. But I think they killed my torque.

USDM STi cams are the same duration as WRX but with slightly more lift.
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Old 01-15-2006, 05:11 PM   #8
spoolinsuby
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Quote:
Originally Posted by bugeyes
If you want a set of cams you can have them free and do as you want with them. Only pay for shipping from Aust.
I'm assuming you're talking about a set of WRX cams. if so I already have a set, thanks for the offer though.

Quote:
Originally Posted by PeteDucati
Crower Stage II cams are 220 at .050 with a lift of .400". Idle is not lumpy at all.. it idles at ~750rpm. But I think they killed my torque.

USDM STi cams are the same duration as WRX but with slightly more lift.
It would be nice to get aftermarket cams that dont kill low end power and still give you plenty up top. VTEC would be great
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