Blowby question

[smokewagon]

Hey guys, went to a dyno day at gillete diesel in Ut over the weekend and had a lot of blow-by coming out of the tube on my 98.5 24 valve. the truck didn't have any oil come out of it at WOT but as soon as you let off the throttle it puked a good amount onto the ground. I have a small set of twins on my truck only running 50lbs of boost. I have read about putting a couple of breathers in the valve cover just curious if this would help out with the problem. Truck still runs awesome layed down 464/1008. any ideas or solutions would be greatly appreciated

Thanks Austin

 

[VMacKenzie]

Either you have a tiring engine or you have a turbo letting pressure blow past the seal and pressurizing the crankcase via the oil return path. Given your description of the problem I would say it's a turbo seal problem.

Another thought is possibly a failing head gasket.

 

[waldershrek]

Is your puke bottle still on there?

 

[smokewagon]

no mine doesn't have a bottle the hose comes out on the driver side not the front of the motor
head gasket only has about 10,000 miles on it. i'll check out the seals on the turbos too is there a way i can check those or is it just re-build and see if it fixes the problem?