Blowby
Thread Starter
Burning Brakes
Joined: Nov 2005
Posts: 1,228
Likes: 44
From: Houston MN
St. Jude Donor '10
Blowby
So I have put about 800 miles on my new forged build. I have been keeping an eye out for oil consumption. I have none so far. What I have noticed is everytime I check the oil level I get a some white smoke coming out of the dipstick hole. Soooo, How much blowby is normal? If any at all. I have not cleaned my breather and plan on doing that today. Thanks in advance.
Thread Starter
Burning Brakes
Joined: Nov 2005
Posts: 1,228
Likes: 44
From: Houston MN
St. Jude Donor '10
Thread Starter
Burning Brakes
Joined: Nov 2005
Posts: 1,228
Likes: 44
From: Houston MN
St. Jude Donor '10
Thats how it's hook up. Am I just being overly cautious here?? I Have not seen any oil out of my breather or anywhere else for that matter. Just noticed that when I check my oil white smoke roles out the tube for about 5-10 seconds
Safety Car
Joined: Apr 2004
Posts: 3,932
Likes: 8
From: Hayward California
If you don't see a drop in oil level your doing good. If there were any real blow-by you'd see it with decent velocity, coming out of a tiny dipstick tube.
Btw... the problem I see with that PCV/Catchcan routing is... when in boost the check valve will pretty much shut the line from the catchcan to the intake manifold. That means during times when under boost and when blowby will be greatest, the line from the valve cover to the inlet of the supercharger is what relieves crankcase of blowby. No catchcan there.
Btw... the problem I see with that PCV/Catchcan routing is... when in boost the check valve will pretty much shut the line from the catchcan to the intake manifold. That means during times when under boost and when blowby will be greatest, the line from the valve cover to the inlet of the supercharger is what relieves crankcase of blowby. No catchcan there.
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Thread Starter
Burning Brakes
Joined: Nov 2005
Posts: 1,228
Likes: 44
From: Houston MN
St. Jude Donor '10
So i just went out and took a close look with the ECS instructions in hand. It looks like my catch can arrow is pointing towards my valley cover (that's the wrong way if I'm reading right) and I don't see any PVC valve. What the heck?? Could this have done any damage??
Thread Starter
Burning Brakes
Joined: Nov 2005
Posts: 1,228
Likes: 44
From: Houston MN
St. Jude Donor '10
I'm talking about the PCV valve that comes with the ECS kit. It's not installed. Now I wondering if all this could have damaged my new motor?
Le Mans Master
Joined: Aug 2002
Posts: 8,472
Likes: 38
From: Houston TX
St. Jude Donor '11
That is the wrong way. You're pressurizing your crankcase when you go into boost. There is no PCV valve. I wouldn't expect any damage happened.
Le Mans Master
Joined: Aug 2002
Posts: 8,472
Likes: 38
From: Houston TX
St. Jude Donor '11
Btw... the problem I see with that PCV/Catchcan routing is... when in boost the check valve will pretty much shut the line from the catchcan to the intake manifold. That means during times when under boost and when blowby will be greatest, the line from the valve cover to the inlet of the supercharger is what relieves crankcase of blowby. No catchcan there.
Here is an off road version that does not allow dirty air into the blower:
Thread Starter
Burning Brakes
Joined: Nov 2005
Posts: 1,228
Likes: 44
From: Houston MN
St. Jude Donor '10
According to the ECS install instructions the kit comes with a PCV valve the goes just before the catch can on the intake side. It is clear that this is missing. Do I not need it?
Le Mans Master
Joined: Aug 2002
Posts: 8,472
Likes: 38
From: Houston TX
St. Jude Donor '11
Wait, maybe I misunderstood. You meant the arrow on the air compressor catch can? And you don't have the check valve/pcv valve in-line? If thats correct then that is your problem. You need that!
The arrow on the air compressor catch can should be pointing toward the lifter valley but that is not critical.
The arrow on the air compressor catch can should be pointing toward the lifter valley but that is not critical.
Thread Starter
Burning Brakes
Joined: Nov 2005
Posts: 1,228
Likes: 44
From: Houston MN
St. Jude Donor '10
Wait, maybe I misunderstood. You meant the arrow on the air compressor catch can? And you don't have the check valve/pcv valve in-line? If thats correct then that is your problem. You need that!
The arrow on the air compressor catch can should be pointing toward the lifter valley but that is not critical.
The arrow on the air compressor catch can should be pointing toward the lifter valley but that is not critical.
Le Mans Master
Joined: Aug 2002
Posts: 8,472
Likes: 38
From: Houston TX
St. Jude Donor '11
Like I said, the catch can arrow doesn't matter too much and kind of comes down to personal preference. It's rather in-efficient as a catch can anyway.
But yea, you need that check valve/PCV valve eh.
But yea, you need that check valve/PCV valve eh.
Thread Starter
Burning Brakes
Joined: Nov 2005
Posts: 1,228
Likes: 44
From: Houston MN
St. Jude Donor '10
Safety Car
Joined: Apr 2004
Posts: 3,932
Likes: 8
From: Hayward California
Here's how mine is set...
Red arrows are one-way checkvalves. The one towards the inlet of SC allows the system to continue letting blowby out when the system is under boost (other checkvalve closes). This has the added benefit of possibly creating a vacuum in the crankcase which I've heard let's the rings seal better.... maybe
Red arrows are one-way checkvalves. The one towards the inlet of SC allows the system to continue letting blowby out when the system is under boost (other checkvalve closes). This has the added benefit of possibly creating a vacuum in the crankcase which I've heard let's the rings seal better.... maybe