PCV Catch Can

[Camar068]

While cleaning the intake on the 2006 Silverado for the ls swap, I noticed a lot of oil inside. I googled it and noticed a bunch of PCV catch cans that people install. Tons of video's/articles on it.

I did try to search here, but it didn't seem to give me good results.

Pro's/Con's/Do you use one? Weird I'd never heard of such a thing.

Thanks Guys

 

[bucket]

Are they typically being installed on stock trucks or people swapping engines to other vehicles? It really doesn't matter, I'm just curious. I haven't seen any late model trucks with catch cans installed.

 

[Camar068]

it showed as results to take care of oil build up in the intake.....as well as just replacing the pcv valve......Any vehicle.

 

[Camar068]

reading up on electric pcv vacuum pumps. I've got some small vacuum pumps at work salvaged from equipment....who knows.

http://www.enginelabs.com/engine-tech/gaskets-sealing/tech-how-external-vacuum-pumps-free-up-horsepower/

 

[GTME94]

I've seen them used, typically on boosted engines that can create a lot of blow-by. They work fine if you are getting a lot of oil in the pcv system which could also be an issue with a higher mileage engine. Newer engines typically have a better baffle system to keep oil mist from getting into the pcv tube/valve in the first place. Oil of any kind burning in the cylinder is really bad for catalysts from an OEM emission standpoint but the OEM's don't really use catch cans since it would require customer to empty it. I'd look inside the cam cover and try to improve baffling there before a catch can. But if you need one then there's no harm in adding one, just have to make sure it doesn't get full and then suck a big volume of oil into the intake.

 

[Camar068]

just have to make sure it doesn't get full and then suck a big volume of oil into the intake.

I thought about that also. Be nice to build a good one and have it pump just the oil back into the crankcase. Might have other stuff other than oil in it. Dunno.....thinking out loud.

Instead of vacuum, why not just run a hose over to a collection "canister" and let the pressure do all the work?

Gonna read that article again, probably missing something.

 

[Camar068]

Ordered an oil catch can today from ebay. I'll have to mod it a bit to make it better, but you can't beat $15.

http://www.ebay.com/itm/BILLET-ALUM...ash=item2edb617863:g:jvcAAOSwMmBV4JEJ&vxp=mtr

 

[yevgenievich]

Generally ls motors did have issues with pcv system getting oil in the intake, but later it should have been resolved. But it is a case on case base. On my ls swap I ended up just putting a filter on the valve cover and calling it at that. It only gets driven 500-700 milea a year.