OIL IN Manifold
Thread Starter
TECH Enthusiast
Joined: Apr 2003
Posts: 561
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From: silver Spring MD
OIL IN Manifold Hi Folks
I installed my FAST manifold and 90m TB this weekend and noticed my old intake had a lot oil in the bottom of it. I searched the thread and found out that this is a catch can made by AMW. The car/engine only has 5000 miles so why am I see a lot oil in the intake? I guess I need a catch can but don't know why - I know to catch the oil. Is there any else you do to stop it?
thanks
Bill
I installed my FAST manifold and 90m TB this weekend and noticed my old intake had a lot oil in the bottom of it. I searched the thread and found out that this is a catch can made by AMW. The car/engine only has 5000 miles so why am I see a lot oil in the intake? I guess I need a catch can but don't know why - I know to catch the oil. Is there any else you do to stop it?
thanks
Bill
From my understanding, the 99 LS1 PCV system pulls from the valve covers where there is a lot of oil mist from the rocker arms...this goes right through the PCV valve and into your intake. The catch can will, as you said, trap the oil mist. You could also convert to the LS6 PCV system. The LS6 PCV pulls from the valley cover where there is less oil mist. Check out LS1howto.com for a write-up on the conversion:
http://www.ls1howto.com/index.php?article=18
http://www.ls1howto.com/index.php?article=18
TECH Fanatic
Joined: Sep 2003
Posts: 1,570
Likes: 1
From: San Diego, CA
you really should have put in a catch can when you did the intake.... i did....
i didnt want to install all those nice clean parts, just to have them full of oil in a few weeks!
get one now! good luck!
i didnt want to install all those nice clean parts, just to have them full of oil in a few weeks!
get one now! good luck!
Launching!
Joined: Dec 2003
Posts: 246
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From: Texas, dont mess with us!
MOre carbon build up in the intake ports, piston tops, spark plugs ETC. I just pulled my intake of a 99 ls1 with 52k and the intake ports were filled with carbon and my intake had some oil residue as well. If you have ported heads and get carbon build up like my heads had,,, almost brings em back to stock. 
Chances are anyone who has ported heads has addressed this issue already, id like to think.
Same reason why GM didnt worry about the piston slap issue, who knows...
Chances are anyone who has ported heads has addressed this issue already, id like to think.Same reason why GM didnt worry about the piston slap issue, who knows...
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Thread Starter
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Joined: Apr 2003
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From: silver Spring MD
Originally Posted by z-ya
Also change to the pcv with the fixed orifce,did this on my 2001 and fixed the problem,
along with the catch can.
along with the catch can.
I plan on getting the Catch Can but the PVC - fixed orifce, what is the part number or what do I ask for?
Thanks
Bill
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Originally Posted by FungusMungus05
Any one know where I can purchase a catch can?
TECH Addict
Joined: Dec 2001
Posts: 2,907
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From: Bergen County, NJ
Originally Posted by '02 WS6
Are there any detrimental effects from the oil getting into the intake? Why didnt GM worry about this problem?
Thread Starter
TECH Enthusiast
Joined: Apr 2003
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From: silver Spring MD
Originally Posted by slpss9723
so...do you not need a catch can for 02 models with ls6 intake or what???
Bill
Teching In
Joined: Apr 2005
Posts: 32
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From: Home of the Hawks
I installed an AMW catch can on my '02 Z Stripper and it catches about a teaspoon of condensed oil every 2000 miles. If you order one from AMW order the bracket as well, it just screws to the passenger side head and you don't have to worry where to put the catch can.
I have A Greddy catch can in 98% condition with 2 new hoses. I bought this and haven't installed. I've added tons of bling to my engine and I don't want to mount this anywhere. $65 shipped anyplace. Great buy.
Launching!
Joined: Apr 2005
Posts: 263
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From: Abilene, TX
so would it be a good idea to put one on as preventive maintenance even if my car has 16000 miles on it?? And if so, do i need to pull the intake to clean it out or is there something else i can do to clean it out??