What is this called? A breather filter? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

TruckinDaddy · 04-04-2005, 10:05 AM

What is the correct name for this filter?

It was installed on the passenger's side valve cover. The molded hose connected it to a curved metal tube and then into the air filter housing. The hose is cut, and when I went to pull the hose off, I noticed the filter is gunked up inside and I want to replace it, too.

I would just rather look like a moron here, than at the parts counter.

Thanks

sneakysnake · 04-04-2005, 12:13 PM

No pic! X's
Its a crank case vent(pcv) it takes the vapors and returns them to the carb to burn

TruckinDaddy · 04-04-2005, 12:26 PM

I moved the pic. Should show up now. I got the PCV out of the other side, the driver's valve cover. It was gunked up bad, too.

But this vented back to the air cleaner, not the carb. Dunno.

Hope the pic helps.

BTW, you wanna mave down to Austin Texas and get my struck straightened out for me?

**VetteVet** · 04-04-2005, 12:32 PM

Here is a picture of one

VetteVet

shifty · 04-04-2005, 02:32 PM

That looks like the tube that goes from the valve cover to the spacer/stack that sits between the carb and intake on my truck.

I took mine off and put a shiny edelbrock breather cap on my valve cover and taped off the hole in the air filter stack. I didn't figure it would mess anything up.

1-PU70 · 04-04-2005, 03:03 PM

Think theres just a screen in there. Should be able to just clean it

da-burb · 04-04-2005, 03:18 PM

I believe that screen in there is actually a flame arrester. It would keep the oil in the crankcase from catching fire when a carb back fires. If it is plugged you can clean it and put it back in.

TruckinDaddy · 04-04-2005, 04:20 PM

Thanks for all of the info, guys. I'm going to try and clean it up. It looks to be full of oily crud. So we shall see how well it works.

shifty · 04-04-2005, 04:49 PM

Is that tube actually necessary?

TruckinDaddy · 04-04-2005, 05:05 PM

I would be the last person on earth to know if it is neccessary. I'll either put it back or find a suitable replacement, because it was there.

As if you can't tell by the type of questions I ask around here, I don't know much of anything about these trucks and I don't want to cause myself any hassles by leaving something off.

But I can easily be convince otherwise...

**VetteVet** · 04-05-2005, 01:30 AM

It's there to let the engine crankcase vapors be drawn into the engine and reburned. If you just stick a breather in the valve cover it will vent the vapors into the underhood area. It's an emissions thing and won't hurt anything as long as you plug the end in the carb spacer. If you have emissions testing in your state they will fail you if they see it. It may not be that critical on that old a vehicle.
Vettevet

04-04-2005, 10:05 AM	#1
TruckinDaddy What's that funky smell? Join Date: Mar 2005 Location: Austin, TX Posts: 610	What is this called? A breather filter? What is the correct name for this filter? It was installed on the passenger's side valve cover. The molded hose connected it to a curved metal tube and then into the air filter housing. The hose is cut, and when I went to pull the hose off, I noticed the filter is gunked up inside and I want to replace it, too. I would just rather look like a moron here, than at the parts counter. Thanks __________________ Mike S 68 C10 Long Step (Pretending to be a Long Fleetside) Grandpa's Farm Truck 3 on the tree, 307, No power brakes or steering Factory Options - HD rear spring and Ammeter/Oil Gauges My truck blog My Car Domain page Last edited by TruckinDaddy; 04-04-2005 at 12:23 PM.

04-04-2005, 12:26 PM	#3
TruckinDaddy What's that funky smell? Join Date: Mar 2005 Location: Austin, TX Posts: 610	I moved the pic. Should show up now. I got the PCV out of the other side, the driver's valve cover. It was gunked up bad, too. But this vented back to the air cleaner, not the carb. Dunno. Hope the pic helps. BTW, you wanna mave down to Austin Texas and get my struck straightened out for me? __________________ Mike S 68 C10 Long Step (Pretending to be a Long Fleetside) Grandpa's Farm Truck 3 on the tree, 307, No power brakes or steering Factory Options - HD rear spring and Ammeter/Oil Gauges My truck blog My Car Domain page

04-04-2005, 12:32 PM	#4
VetteVet Msgt USAF Ret Join Date: Jan 2005 Location: Kalamazoo, Michigan Posts: 8,719	PVC Valve Here is a picture of one VetteVet Attached Images __________________ VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative.

04-04-2005, 02:32 PM	#5
shifty Questionable Join Date: Mar 2005 Location: Atlanta Posts: 13,373	That looks like the tube that goes from the valve cover to the spacer/stack that sits between the carb and intake on my truck. I took mine off and put a shiny edelbrock breather cap on my valve cover and taped off the hole in the air filter stack. I didn't figure it would mess anything up. __________________ If I've got anything up for grabs, it'll be here: 7-hole gauge cluster for a 67-72 p/u FREE (link) I can't check the forum daily. If I don't reply to you within 24 hours, drop me a PM! I'm (hopefully) still alive and will reply faster to a PM.

04-04-2005, 03:03 PM	#6
1-PU70 Registered User Join Date: Apr 2000 Location: Bradenton, FL Posts: 1,036	Think theres just a screen in there. Should be able to just clean it __________________ 1970 CST/10 402,700R4,3:73 posi,AC,PS,PB,TLT,PW,Buckets with heaters

04-04-2005, 12:13 PM	#2
sneakysnake It's a catastrophic success. Join Date: Jan 2003 Location: Oklahoma Posts: 2,077	No pic! X's Its a crank case vent(pcv) it takes the vapors and returns them to the carb to burn

04-04-2005, 03:18 PM	#7
da-burb "Ochre Ogre" Join Date: Apr 2000 Location: Springfield, MN Posts: 3,558	I believe that screen in there is actually a flame arrester. It would keep the oil in the crankcase from catching fire when a carb back fires. If it is plugged you can clean it and put it back in. __________________ Bowtie Truck Stop Inc. Mid-West GM Truck Restoration Parts Supplier Your Key Parts, Auto Metal Direct, Dynacorn, and Goodmark dealer. like us @ www.facebook.com/BowtieTruckStop 1971 C-10 Suburban (Ochre) 1971 K-10 Suburban (Ochre) 1972 C-10 Suburban (Ochre) 1972 K-20 Suburban (Yellow- that just aint right!) Springfield, Minnesota 56087 Last edited by da-burb; 04-04-2005 at 11:33 PM.

04-04-2005, 04:20 PM	#8
TruckinDaddy What's that funky smell? Join Date: Mar 2005 Location: Austin, TX Posts: 610	Thanks for all of the info, guys. I'm going to try and clean it up. It looks to be full of oily crud. So we shall see how well it works.

04-04-2005, 04:49 PM	#9
shifty Questionable Join Date: Mar 2005 Location: Atlanta Posts: 13,373	Is that tube actually necessary? __________________ If I've got anything up for grabs, it'll be here: 7-hole gauge cluster for a 67-72 p/u FREE (link) I can't check the forum daily. If I don't reply to you within 24 hours, drop me a PM! I'm (hopefully) still alive and will reply faster to a PM.

04-04-2005, 05:05 PM	#10
TruckinDaddy What's that funky smell? Join Date: Mar 2005 Location: Austin, TX Posts: 610	I would be the last person on earth to know if it is neccessary. I'll either put it back or find a suitable replacement, because it was there. As if you can't tell by the type of questions I ask around here, I don't know much of anything about these trucks and I don't want to cause myself any hassles by leaving something off. But I can easily be convince otherwise...

04-05-2005, 01:30 AM	#11
VetteVet Msgt USAF Ret Join Date: Jan 2005 Location: Kalamazoo, Michigan Posts: 8,719	pvc tube It's there to let the engine crankcase vapors be drawn into the engine and reburned. If you just stick a breather in the valve cover it will vent the vapors into the underhood area. It's an emissions thing and won't hurt anything as long as you plug the end in the carb spacer. If you have emissions testing in your state they will fail you if they see it. It may not be that critical on that old a vehicle. Vettevet __________________ VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative.

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