Bought my Evo 2 months ago and not sure if it has cams, it doesn't make the lope sound but is there a way to tell the difference between stock cams and aftermarket looking to eventually upgrade to 272s but want to verify before I start replacing parts. My motor came with an Evo 9 turbo so I'm not sure if the owner put them on or not "bought from a private dealer"

 

Usually you can tell by the sound. But worst case pull your valve cover off

 

I had hks 280 cams and my car idled like stock when I got it so I would pull the valve cover

 

Crank your engine, if it starts and runs you have cams in there.

If you pass this test you can move on to stage 2...

Pull you valve cover and check for numbers to verify if your cams are aftermarket or not.

Hopefully the cam gods have blessed you with some aftermarket goodness!

 

and hope to god they didn't replace the cams with https://www.evolutionm.net/forums/ev...-obx-cams.html

 

I had HKS 272's and didnt know it til I pulled the valve cover off to powdercoat it. Doesn't take long to look. Hopefully you find a good surprise lol

 

Heres a pic of HKS 280s i have in currently.. but am replacing them with new GSC S3s so they will be for sale if you find out that you have stock cams

 

How about bottom end? Is there a way to inspect to see if it's stock bore, rods, pistons and bearings by pulling the oil pan and using a borescope?

 

I would say, first, by sound. Second, like others said, remove the valve cover to check. Also, you can sometimes see from removing the oil cap and peeking in with a flashlight (and if you know what you're looking for).

Yes, absolutely. It's usually pretty easy to tell if the internals are aftermarket at least.

 

Alright cool, I'm finally putting my dd on the road so I can inspect. I'm making too much power for my mods lol. Too much torque, I'd like to know what it has before getting my E85 tune. I've dd'd this Evo for 4 years now "stock", it'll be funny if it turns out to have a 2.4L or something LOL. I didn't know it had a 9 motor and turbo until I took it to STM for a new tcase about a year ago before starting my mods.

 

Thanks I never owned an Evo so I don't know how they sound stock. I'll look later this week

 

Hope Christmas comes early!

 

your car have a boost gauge? stock evos will idle at about -20 vacuum on the gauge and with cams -10 to -15

 

most cams are marked. pull the valve cover off and look for brand names, and serial numbers, then search.

 

I just bought my evo 8. the previous owner said it got a hks 272 cams in it and gears. i guess i will find that out and add that task this weekend after i changed all the fluids.