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LS Valve cover barb size???

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Old 07-17-2022, 02:10 PM
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Default LS Valve cover barb size???

I'm wanting to get a quick dis-connect for my oil catch can line to connect to me driver'* side valve cover (2009 Chevy 5.3L LS engine)

But, I'm not exactly sure what quick dis-connect connector to buy or where to buy it.

The first step should be knowing what size the barb is located on the rear of the valve cover

If anybody know what size this barb is, and what quick dis-connect connector to buy, please let me know.

It looks kinda like 3/8 to me but it may be metric sizing.

Here'* a pic:




Old 07-17-2022, 11:08 PM
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Moved from "Lounge" to "General GM Chat". If we end up figuring out what kind of car this engine is in, it might move again.
Old 07-17-2022, 11:26 PM
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Originally Posted by Rockrz
I'm wanting to get a quick dis-connect
You could re-use the quick disconnect that would normally connect there, either from the current vehicle, a junkyard, or a fresh part.

Originally Posted by Rockrz
for my oil catch can
I'm just curious: Does it have some issue belching oil out of the breather?

Originally Posted by Rockrz
(2009 Chevy 5.3L LS engine)
What kind of car?

Originally Posted by Rockrz
It looks kinda like 3/8 to me but it may be metric sizing.
I'd bet it is metric.

You could just measure it. If you measure in imperial, figure out what size is very slightly bigger, then how many mm that is, then remove everything after the decimal point. That should give you a good idea what metric size it is.
Old 07-17-2022, 11:35 PM
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Originally Posted by Rockrz
driver'* side valve cover (2009 Chevy 5.3L LS engine)
Just realized with a driver'* side valve cover it is longitudinal, so odds are really good that this is a GMC/Chevrolet Truck/SUV . Moved from "General GM Chat" to "GMC/Chevrolet Truck/SUV".
Old 07-18-2022, 12:08 AM
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You could re-use the quick disconnect that would normally connect there, either from the current vehicle, a junkyard, or a fresh part.
I went out and bought the tube for my truck (Chevy Colorado with factory 5.3L) that runs from the valve cover to the intake (only $14 at the dealer)

It has the factory quick disconnect for the valve cover connection so I'm going to take my fuel line cutter and hopefully be able to very neat and clean be able to cut the hard plastic line and see it it will fit into the hose fitting...


I'm just curious: Does it have some issue belching oil out of the breather?
I don't have the catch can installed yet. I bought the catch can, and now I'm putting together the lines


What kind of car?
Chevy Colorado with factory 5.3L
Old 07-18-2022, 12:32 AM
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Originally Posted by Rockrz
I went out and bought the tube for my truck (Chevy Colorado with factory 5.3L) that runs from the valve cover to the intake (only $14 at the dealer)

It has the factory quick disconnect for the valve cover connection so I'm going to take my fuel line cutter and hopefully be able to very neat and clean be able to cut the hard plastic line and see it it will fit into the hose fitting...
Cool!

Originally Posted by Rockrz
I don't have the catch can installed yet. I bought the catch can, and now I'm putting together the lines
I'm still curious: Does it have some issue belching oil out of the breather?
Old 07-18-2022, 12:56 AM
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I'm still curious: Does it have some issue belching oil out of the breather?
No, the issue is my engine is not a 2 cycle motor so it'* not designed to have oil vapors ported in to the intake to be burned in the combustion chamber.

I'm installing an Oil Catch Can on the dirty side, and a Clean-Side Oil Separator on the clean side to keep this sort of thing down and/or eliminate it altogether
Old 07-18-2022, 07:07 AM
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Default Must have tool for this work

A great set of tools for this is the McCool hydraulic crimper with dies included for GM Quick connects. Transmission and fuel. Pair with the Dorman fuel line repair kit which has lots of different size quick connects, barbs, nylon line, etc. its great for redoing almost all lines on a vehicle. Both are available online. A must have tools if you do this more than once and even if you only redo fuel lines once they give you options on how to route, etc. not cheap but well worth it. PS DO NOT buy the cheap knockoff hydraulic crimper sets. Dies are soft metal and they don't work.
Old 07-18-2022, 12:46 PM
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Great idea as I'm also wanting to add an inline fuel filter to my truck... they forgot to pout one on at the factory.,

But, I don't see anything online for tools under the McCool name, although I see women'* hair care products under this name
Old 07-18-2022, 07:48 PM
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Default “Mastercool hydraulic flare kit”

Originally Posted by Rockrz
Great idea as I'm also wanting to add an inline fuel filter to my truck... they forgot to pout one on at the factory.,

But, I don't see anything online for tools under the McCool name, although I see women'* hair care products under this name
sorry. Is the name “Mastercool” can use do quick connects and flares while on vehicle. Here is a link from a google search I did. You can get them at multiple places. Not much of a deal on them that I have found but worth every penny. The cheap version is Velor. You will find a ton of them for about 1/2 the price. Stay away from them. They might work on aluminum but not steel lines.

https://www.googleadservices.com/pag...ECAEQCw&adurl=


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