I've never really heard a stock evo idle, but mine(used), got it few months ago....sounds as though it may have cams..kind of has the "domestic" idle...but is there a sure free way to tell?

 

Take off your oil filler cap and look inside. I *believe* stock cams are hollow, and you'll see a hole in some parts of the cam.

 

oh man, look out for the "RESEARCH FIRST ****'s", they are forming up in cyberland...

do the rpm's fluctuate at idle?? almost seems like the car is going to stall out? I have the HKS 272's, without bleeding the lifters install...idle is choppy, about 200-300rpms from normal idle... sometimes sounds like the car is going to stall.

 

if u think it has cams it probly does.....as long as it doesnt miss like u need plugs when your driving...then the looping sound is cause of the cams

 

jus check youre vacum, my car idles around -11psi

 

thx for the replies, will check this all out when i get home...my vac is pretty low too on the gauge, what does a stock evo vac at?

 

^^I believe it should be around 19-20 stock. Mine was used with cams and the vacuum was at about 13. Took it to a shop, and they verifed I had cams by just looking quickly. Finding out the brand and type is a different story.

 

i believe only the IX cams are hollow...not completely sure though

 

ix cams are hollow as well. If you have cams you will be in the 10-12 inhg range on the vac side of the boost gauge. If you are in the 15-20 range you have stock cams more than likely.

 

Usually if your car has camshafts the exhaust will have a "wowowowowo" sound(haha thats the best i can do), let alone as to a constant exhaust sound.

 

VIII's are hollow as well.

 

Pull the valve cover. It only takes a couple of minutes.

 

well i opened the oil cap as suggested....lol, and i'm just lookin at cams...yea, def not sure what i'm exactly lookin for

 

If there's a hole on one side, then... If you don't see one, then put the cap back on and give your car a quick crank and check again. Or take the cam gear cover off and turn your cams slowly. If you don't see a hole, then it's a big possibility they aren't stock. Most aftermarket cams are not hollow.

 

actually lookin at the post on evomoto of a cam install, they do show the stock ones and the holes are definately visible,..i dont belive mine looks anything like that, but i guess its hard to really know unless i pull off the full valvue cover