Valve cover PCV
Thread Starter
Le Mans Master
Joined: Aug 2017
Posts: 6,939
Likes: 1,488
From: New Jersey
Valve cover PCV
Just a dumb question. The PCV boxes inside the valve covers, are they press fit to the tube that the grommet rests in or is that the outside casing of the PCV box? I want to try and clean them out after bead blasting but If that isn't a removable piece I'll just flush it and blow them out in my parts washer and call it good enough.
Thanks in advance,
-Paul
Thanks in advance,
-Paul
Drifting
Joined: Jan 2021
Posts: 1,312
Likes: 383
From: Northern California
Not removable if you're talking about the baffles that reside under the hole where the grommet inserts. I believe they are pressed / crimped onto the valve cover post-casting. You are right to be concerned about media blast residue getting in there. It's good if you can tape off the hole, and the bottom of the baffle also, because once junk gets into that assembly it can sometimes be hard to get out. It's like a maze inside with corners, hard to reach. Then it can fall into your head with engine vibration months later.
If you've already blasted and there is some residue in there, I'd suggest a good blow out and wash as you wrote. Plus maybe shake the thing a bunch beforehand.
If you've already blasted and there is some residue in there, I'd suggest a good blow out and wash as you wrote. Plus maybe shake the thing a bunch beforehand.
Thread Starter
Le Mans Master
Joined: Aug 2017
Posts: 6,939
Likes: 1,488
From: New Jersey
Not removable if you're talking about the baffles that reside under the hole where the grommet inserts. I believe they are pressed / crimped onto the valve cover post-casting. You are right to be concerned about media blast residue getting in there. It's good if you can tape off the hole, and the bottom of the baffle also, because once junk gets into that assembly it can sometimes be hard to get out. It's like a maze inside with corners, hard to reach. Then it can fall into your head with engine vibration months later.
If you've already blasted and there is some residue in there, I'd suggest a good blow out and wash as you wrote. Plus maybe shake the thing a bunch beforehand.
If you've already blasted and there is some residue in there, I'd suggest a good blow out and wash as you wrote. Plus maybe shake the thing a bunch beforehand.
Drifting
Joined: Jan 2021
Posts: 1,312
Likes: 383
From: Northern California
Drifting
Joined: Nov 2021
Posts: 1,726
Likes: 385
From: People's Republic of Nueva York
My experience with glass bead (if that's what you're using) and I have a lot, is that hot water or solvent like Brakleen can flush it out. When I say Brakleen I refer to the red can stuff that's banned in California. That @$$umes that there was no sludge in the baffles for the stuff to stick to. If there's any indication of sludge you need to find a way to get it all out or the combination of that and blast media will turn into lapping paste.
Good luck and have fun.
Good luck and have fun.
Thread Starter
Le Mans Master
Joined: Aug 2017
Posts: 6,939
Likes: 1,488
From: New Jersey
My experience with glass bead (if that's what you're using) and I have a lot, is that hot water or solvent like Brakleen can flush it out. When I say Brakleen I refer to the red can stuff that's banned in California. That @$$umes that there was no sludge in the baffles for the stuff to stick to. If there's any indication of sludge you need to find a way to get it all out or the combination of that and blast media will turn into lapping paste.
Good luck and have fun.
Good luck and have fun.
I actually don't keep any chlorinated brake parts cleaner around because I do weld occasionally and don't want to accidentally kill myself lol.
Drifting
Joined: Nov 2021
Posts: 1,726
Likes: 385
From: People's Republic of Nueva York
I would guess that should work too. I was specific about the Brakleen type because that's what I use for that. We don't usually use the green-can stuff.
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Thread Starter
Le Mans Master
Joined: Aug 2017
Posts: 6,939
Likes: 1,488
From: New Jersey
There is a non chlorine red can too which really confuses things. The green can works just fine for .out things though.