Okay guys having some issues and I'm lost at this point. Little run down of my car, evo 9, 63,xxx miles, fp black, gsc s2 cams, hi rev valve springs with titanium retainers and gsc valve seals. A bunch of other irrelevant stuff and a radium engineering dual catch can setup. Speed density tuned by KPtuning.

Recently i started noticing a small puff of smoke in-between shifts during spirited driving and some immediately afterwards on decel. After searching the forum I figured valve seals. A couple weeks later the smoke got worse, way worse. Smoke on cold start for a little bit with the same symptoms during spirited driving and the smoke on decel was so bad I would send a smoke screen across every lane of traffic and any nearby fields.. it was really bad. So i leak down tested my car and after I was sure it was valve seals. I pulled my cams and one of the exhaust valve seals on cylinder 1 was missing the top part of the seal. I was amazed because these seals had about 800 miles on them. I just put in brand new valve seals and SAME PROBLEM IS STILL THERE! My car doesn't feel under powered at all in any means, idles great pulls hard just smokes on decel bad. I did have a noise in the head around cylinder one that was there from day 1 and the noise is still there. Any ideas? could it be a valve issue? Im totally lost and appreciate any help! thanks guys!

 

What springs are you running? Dual springs? I've heard of folks running certain springs that would damage the seal quickly like in your scenario. Guessing the only fix would be running a smaller seal? If that is the problem you're having. How many miles on the turbo? Any shaft play?

 

They're the GSC high rev beehive springs, they're single. And the turbo has a little over 2000 miles now with minimal shaft play and it doesn't blow any smoke at WOT.

 

What size fittings and hose are you running to to the catch cans? My bet is you have to much crank case pressure. My car was doing the same thing..

 

Not 100% about fitting sizes, they're whatever comes with the radium engineering dual catch can kit. I know the hose is came with was 3/8. I'm not filling catch cans and I assumed all was good because it didn't happen immediately after my build it started around 500-600 miles after. But anyway what size hose and fittings do run ? That's an easy upgrade and worth a shot to try.

 

10an on the driver side, 6an PCV. You have to drill and tap the driver side of the valve cover for 1/2" pipe thread and run a 1/2 pipe to 10an adapter

 

Okay I'm gonna starting getting this together, hopefully this fixes my problem.

 

Alright, so I ended up going full -10an on the drivers side and -10an on the PCV side too with a check valve replacing my stock PCV. So far all is good no smoke at all, none on startup and non on decel. Thanks guys!