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Old 12-17-2012, 06:09 PM   #1
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Just Another Night In C5 Dudes Garage......

Well the intake is off........



Getting her cleaned up......



Yep....the coil packs are off and on the bench getting cleaned up. Going to get new plugs and wires while I'm in there. I also found alot of fuel in the bottom of the intake runners so the injectors are going to the injector Dr. tomorrow to be tested and cleaned and given a tune up if they need it. Tomorrow afternoon I'll work on the drivers side.


Last edited by The Dude; 12-21-2012 at 11:58 AM.
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Old 12-17-2012, 07:13 PM   #2
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and what is it you are doing?
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Old 12-17-2012, 07:36 PM   #3
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The EOP sensor.
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Old 12-19-2012, 10:09 AM   #4
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Quote:
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The EOP sensor.

Yep. The EOP sensor, but also since it has 140,000 on it I am cleaning it up, replacing all the sensors under the intake and having the injectors tuned or replaced depending on what the injector Dr. says.

I want to get it in perfect running shape before I start adding performance add ons. The only perfromance thing to be added durring this initial freshen up is the clutch.

Doesn't aluminum heads look good on an aluminum block!
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Old 12-19-2012, 11:52 AM   #5
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Good timing for a Catch Can depending on how much oil you found in the manifold and a throttle body bypass. Wouldn't think you still need that connected in texas

....here's to those busted knuckles
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Old 12-19-2012, 12:16 PM   #6
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Good call C5 Dude. I don't know if there is any real advantage to a catch can. I haven't seen any scientific data that shows that they are really any good. The manufacturers say that they are but if they truly were, GM would have started putting them on the LS based engines by now. JMHO.
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Old 12-19-2012, 12:39 PM   #7
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Good call C5 Dude. I don't know if there is any real advantage to a catch can. I haven't seen any scientific data that shows that they are really any good. The manufacturers say that they are but if they truly were, GM would have started putting them on the LS based engines by now. JMHO.
I think they came up with a better PCV valve in lieu of requiring the owner to drain and service a Catch Can. Any aggressive driving at high rev's dumps ounces into my can which previously went through the manifold..............before replacing the head gaskets at 19K.
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Old 12-19-2012, 01:58 PM   #8
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Quote:
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I think they came up with a better PCV valve in lieu of requiring the owner to drain and service a Catch Can. Any aggressive driving at high rev's dumps ounces into my can which previously went through the manifold..............before replacing the head gaskets at 19K.
I wonder if that PCV valve backward compatible for our older LS1's?
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Old 12-19-2012, 02:57 PM   #9
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Good timing for a Catch Can depending on how much oil you found in the manifold and a throttle body bypass. Wouldn't think you still need that connected in texas

....here's to those busted knuckles
What is this catch can you speak of....show me a picture of what youve got. I may do this if below doesn't work out.

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I wonder if that PCV valve backward compatible for our older LS1's?
I will check on this and report back to you.
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Old 12-19-2012, 04:03 PM   #10
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What is this catch can you speak of....show me a picture of what youve got. I may do this if below doesn't work out.



I will check on this and report back to you.
The LS2 PCV system is compatible with a LS1/LS6. Only thing is that it will not be quite as efficient because the LS2 block has different internal venting.
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Old 12-19-2012, 06:26 PM   #11
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Quote:
Originally Posted by HardcoreABN View Post
The LS2 PCV system is compatible with a LS1/LS6. Only thing is that it will not be quite as efficient because the LS2 block has different internal venting.
Well sucky sucky.
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Old 12-19-2012, 07:11 PM   #12
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What is this catch can you speak of....show me a picture of what youve got. I may do this if below doesn't work out.
Mine is a CCA which I changed the original barbed fittings to AN and installed a swivel 90 on top to relieve a stress in the hose that under engine vibration would loosen the top of Can enough to create a whistle. Z06's do not whistle. Atleast mine doesn't anymore. Scream, yes maybe.........or that could just be the passenger, I can never tell over the exhaust anyhow.





After WOT or high rev's, I will trap a significant amount of oil that would have previously gone right into the manifold. I usually will check it after a known WOT event (there never is just one ) at the end of day and drain as necessary.

I use a 3/8" clear hose attached to the bottom drain valve and a baby food jar, previously used by a little girl (19 years ago) that loved banana pudding, like her dad. You could substitute creamed corn, applesauce or strained Peas if you don't care for banana pudding. It is the only small container I found to fit under the car.....so maybe no more than 4 ounces at a time. I never measured full capacity of the Can, but it may hold 12 to 16 ounces safely, but draining it off..and how to contain it becomes the problem without pouring all over my stamped and tinted driveway.

The internal filter gets cleaned or replaced when I notice a reduction in manifold vacuum pressure. Maybe once or twice a year or when the AN fittings need to be broke loose to access something else.

Last edited by Fly03Z06; 12-21-2012 at 09:27 AM.
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Old 12-19-2012, 07:26 PM   #13
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so that's a vacuum gauge inline with the plumbing for it....never thought of that.
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Old 12-19-2012, 07:41 PM   #14
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I need to see a diagram of how that thing is suppose to work, the advantage of having one and the problems that can be created by not having one (if such a problem exist).
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Old 12-19-2012, 07:50 PM   #15
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I will see if I can work out a drawing of it's operation.

next time you do some spirited driving, pop your throttle body off and run your finger inside the intake. If there is any oil on your finger you will benefit from having a catch can. On all the LSX engines, GM was never quite able to solve the issue of the PCV system sucking up oil vapor and sending it to the intake to be recycled back into the engine. Excessive oil in the combustion chamber can cause numerous problems, such as a continuous lean condition (the oil will make the o2 sensor think it is running rich and lean the mixture out).

What the catch can does, is it allows the oil vapor (that is in the air being vented) to condense and collect in the can instead of the intake manifold and combustion chambers.
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