 Excess Blowby 5S-FE + Turbo |
 Aug 16, 2014 - 8:46 AM
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 Enthusiast  Joined Jan 4, '12 From US Currently Offline Reputation: 6 (100%)  |
So apparently I'm generating excess blowby. I spewed a little oil through my dipstick last night when I hit ~8.5psi.
Currently, I have PCV and Crankcase vent on the valve cover both routed into the atmosphere. I am going to connect the PCV back to how the factory intended. The only issue is it will raise my idle a bit because it will suck in "unmetered" air through the valve cover vent. However, I was thinking about routing the valve cover breather to a catch can, and route that to the turbo. I have a catch can already, and a few feet of line. I just need to drill and tap my turbo intake for a hose fitting. How have you turbo guys routed your PCV system? This post has been edited by Syaoran: Aug 16, 2014 - 8:56 PM -------------------- 1993 Celica GT Coupe - sold
1994 Celica GT Liftback |
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Aug 22, 2014 - 9:36 AM
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Enthusiast Joined Jan 4, '12 From US Currently Offline Reputation: 6 (100%) |
This wasn't enough. Oil was coming out of the dipstick. The ~6.9mm hole in the stock breather is way too small. I put a 15mm (5/8") fitting on the valve cover and it alleviated the problem immensely.
I'm going to upgrade to 19mm (3/4") now and see how it goes. If it doesn't completely eliminate the problem, I'll make another hole in the VC. -------------------- 1993 Celica GT Coupe - sold
1994 Celica GT Liftback |
Posts in this topic
Syaoran Excess Blowby 5S-FE + Turbo Aug 16, 2014 - 8:46 AM
mkernz22 They put the PCV in there for a reason. You should... Aug 16, 2014 - 8:05 PM Syaoran I made a Tee off to the PCV and a Vacuum block for... Aug 16, 2014 - 9:09 PM Smaay its a MAP car, you dont have to worry about ... Aug 18, 2014 - 12:03 AM Syaoran Yeah, by "unmetered" I meant potential v... Aug 18, 2014 - 8:35 AM
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