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Old 04-12-2009, 10:09 PM   #1
sofiagonza
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2002 WRX
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Default BC 280/280 AVCS setup

Hi Guys, I bought a BC 280 camshafts set stage 3 and BC spring/retainers kit to install them on my WRX "non STI" 2006 AVCS EJ255 2.5 l. , my question is : a) If I keep the 2.5 allen plug working to block the oil gallery, could I use the factory cams sprocket? or I need to replace them for any adjustable? b) If I remove the 2.5mm allen plug to leave the AVCS System working, Could the engine has any valve problem with piston (valve and piston gap in overlap time)?

Thanks a lot for any information.......

Nelson D
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Last edited by sofiagonza; 04-27-2009 at 05:40 PM.
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Old 04-13-2009, 12:45 AM   #2
STIBungy
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The cams will throw your valve lash way off so make sure you measure them and get the right buckets.
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Old 04-13-2009, 10:22 AM   #3
STi5ubie
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i put the same 280/280 cams in my sti motor and i replaced the cam sprocket on the driver side intake with a wrx one to get the signal, bought a wrx cam sensor, disconnected the avcs, and now am in the process of replacing the cam guides(i think that's what they are called.. hold the cam to the head) with wrx ones to get the stock mounting bracket for the sensor. If someone knows of a bracket that actually works in US spec sti's to mount the sensor please lemme know.
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Old 04-14-2009, 12:19 AM   #4
Hayaboosted
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Rotated T67 ALLABOUTSPEED

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Quote:
Originally Posted by STIBungy View Post
The cams will throw your valve lash way off so make sure you measure them and get the right buckets.
Or you can have you stock valves grinded.. This is a much cheaper alternative.
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Old 04-14-2009, 02:38 AM   #5
~snowman~
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Quote:
Originally Posted by STi5ubie View Post
now am in the process of replacing the cam guides(i think that's what they are called.. hold the cam to the head) with wrx ones
I thought someone said the cam caps have to match or something or else, if you can do this and get away with it sucessfully Id rather go this route too, plug the holes, and get wrx sprockets will that work without search and siezure? I understand, I guess from what Ive read that yeah, you can use the STi oem as is but, yes Im leaning toward that would be nice, to run the WRX sprokets, instead of running the avcs caps and pulleys, and cheaper too. Id rather run the AVCS lines just for lube?

And something about the cam seals, whassup with those? Do I want the stock STi cam seals or WRX ones? I think if you go OEM STi and leave AVCS not connected, you still use STi cam seals though? Forrester seals.....or something

If I use STi pulleys, and plug the cam holes what seals should I use?

If I use STi pulleys, and NOT PLUG the cam, what seals should I use?

wait a sec, okay I get it now, if you plug the cam, there is NO REASON to use stock sti pulleys right? okay i feel tard. and if you plug the cam you should use wrx seals right? what about forrester seals? baja?


I'm stuck on this question too, people talk about plugging the cam holes, but do ya think you can plug the cams and use AVCS sti heads without lines and new cam caps, is that okay?

I dunno man, Im so freaked out about these avcs heads I want to go straight oem pulleys, run the avcs lines.

and what are you talking about the 2.5mm allen on the head please if you dont mind sorry Ive been searching and I cant find anything on the little allens as I was wondering about those ports and what they do.

Just curious about a good working scenario, if you have AVCS BUILD and dont want to hook it up basically, but still run effeciently........

Last edited by ~snowman~; 04-14-2009 at 04:23 AM.
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Old 04-14-2009, 02:58 AM   #6
dasnowman
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Nice name!
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Old 04-14-2009, 02:58 AM   #7
nuppy
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I have an 05 sti with the bc 280 cams and im still running avcs. I dont understand the point in disconnecting. I think you would make more power running stock cams with avcs
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Old 04-14-2009, 02:44 PM   #8
john 1badSTI
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Quote:
Originally Posted by STi5ubie View Post
i put the same 280/280 cams in my sti motor and i replaced the cam sprocket on the driver side intake with a wrx one to get the signal, bought a wrx cam sensor, disconnected the avcs, and now am in the process of replacing the cam guides(i think that's what they are called.. hold the cam to the head) with wrx ones to get the stock mounting bracket for the sensor. If someone knows of a bracket that actually works in US spec sti's to mount the sensor please lemme know.
yes cosworth sells that bracket I built an sti motor for a guys wrx and the bracket worked perfectly since I was using the sti heads but without running the avcs.
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Old 04-27-2009, 05:33 PM   #9
sofiagonza
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2002 WRX
Silver

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Hi Guys, I bought a BC 280 camshafts set stage 3 and BC spring/retainers kit to install them on my WRX 2006 AVCS , my question is : a) If I keep the 2.5 allen screws working to block the oil gallery, could I use the factory cams sprocket? or I need to replace them for any adjustable? b) If I remove the 2.5mm allen screws to leave the AVCS System working, Could the car has any valve problem?

Thanks a lot for any information.......
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