gen 2 pcv & oil catch can

[jrand]

i dont see much info about the gen 2 pcv anywhere <yet to search using jag stype terms>. im pretty sure all of them are under recall and it would be smart to take advantage of that if you havent. the 05 service manual is shockingly thin on anything PCV-related, as is this forum.

i had lincoln do mine under warranty about 30k mi ago. ive read that 30k is roughly the service life of a pcv valve, and i have noticed my oil leaks have seemingly ramped up here of late. i remembered that that ive never even touched that pcv, so on first look i see theres some sort of locking mechanism on the valve... does anyone have a link to the tool needed to pop it out?? also when you buy the valve at the parts store it doesnt come with the elbow that sits on top of it. looks like its going to be a real btch to get that elbow off, so youre probably better off replacing that elbow too while youre at it. I havent seen a confirmed part number for it on a gen2... so if someone has that confirmed, i think this would be a good place to post it.

i wouldnt be shocked if my pcv is gummed up after 30k... as compressed and old as the motors are, im sure there is ample blow by to clog the valve, jump the pressures, and make the oil leaks worse....

i also think it would be smart to put a catch can in... theres ample room for the can on the passenger side of the bay. ive not seen anyone with one, but i would be curious to know if anyone rigged one up. there might be some 'fun' trying to get the hoses matched up bc the pcv hoses look a lot bigger than what most pcv catch cans use... might be smart, cheap, AND easy to just 'DIY' the whole dam thing with a glass jar...

 

[sid]

Funny you bring this up. Just yesterday I was looking at how I was going to install a catch can on my '06. I have used them on several of my mustang and was always surprised at how much oil they collect; even on new cars. I cans that work the best in my experience are the ones with screen mesh to help separate the oil. A lot of the fleabay specials don't. Some of the ones with the brass style filters don't flow as good as the screen type filter. I'll post some pics when I do mine.

 

[jrand]

good deal sid, if im not mistaken, you are probably going to end up putting in a lot more hose on a gen2 v8 vs a gen2 v6. i believe the pcv on a v8 is sort of hidden <dont quote me on that bc i dont have one> in comparison to the v6. the v6 has a design that should lead to easy customization bc its right on top and highly visible. the only problem i see with it is the size of the hoses on the car being a bit larger than the ones used by most universal fit catch cans, which will require some customizations.

most cheap universal catch cans seem to also be somewhat smallish, in addition to the fact that they are just an empty can like you said. i think that with a small can the suction under high rpm + the limited capacity of the can + the oil slosh in turns and hills Might cause a lot of the stored oil to end up getting sucked into the intake anyways... im thinking that the bigger the oil catch can the better. the greater the height between the stored oil and/or the inlet hose & the outlet hose the better. also the wider the can the better bc it will allow for some more slosh. a screen would probably dampen splashes/droplets that would probably result from sloshing too.

Also, the easier it is to dump it the better. i am thinking that a large glass jar from spaghetti sauce or something is going to be the best solution by almost every measure except beauty...

and yes i agree about the blow by being significant, even on new motors. actually there should probably be a lot of blow by in a new motor that has yet to fulfill its 'break-in period' <however long that may be>... some of what ive read has also been critical of high compression motors and motors with turbos/high boost in the sense that those systems highly need a stock catch can on the pcv or a custom solution to just bypass the systems ability to dump the blow by oil into the intake altogether via a less eco-friendly setup which just dumps the oil on the ground. the reasoning behind it was high compression = higher pressure = greater pcv suction.

 

[jrand]

fwiw, i am letting lincoln take a look at my pcv again since they recalled it and it will be free to make them inspect their recall work... i will at least get their take on the tool to remove the pcv properly, the elbow that sits on top, and the procedures for the actual testing of the valve to determine if its good or bad...i got a new valve and it failed 'the blow test'... so i really have no clue how to determine good vs bad. it 'jiggles', but i dont think thats an adequate indicator of functionality either...

 

[sid]

Just remember "suck and blow"! on a pcv valve it should flow one direction but not the other. With a mesh or filter, you don't have to worry to much about the slosh.

Here is the Moroso oil catch can I ran on one of my Mustangs. It did great. I would drain it when I did an oil change. I would get a few oz out of it each time I drain it.

http://www.summitracing.com/parts/m...Qyf6-xhf4YLn8uBhPBSfyUNyqvdKkYdRD0aAmht8P8HAQ

Here is one that Steeda sell. This has a fiber type filter which helps oil from getting sucked back into the engine. Looks like a air/oil separator for an air compressor. (Home Depot stuff)

http://www.latemodelrestoration.com...yctAH_Ec9wuRAeaQRU3P6rn178YvdeFU3caAglj8P8HAQ


My '87 Chrysler Conquest had a factory separator with a drain tube that went back to the oil pan.

 

[elephantrider]

i run the elite engineering catch can on my gto. great investment.

 

[Alax7]

Gen2 v8's don't have a pcv valve, they have a different "system" that replaces the pcv valve.

 

[jrand]

the process to remove the pcv valve is to remove the hose that is connected to the elbow, then push down on the valve and turn. no special tool needed. to get the elbow off the old one and onto the new one you will need a little heat applied to the elbow. the part number for the elbow is '6767' and was quoted at $10 by lincoln. i just kept the old one on there bc it wasnt damaged, but if i were to do it again i would make sure i had a new elbow before i tried to remove the old one. also <anectdotally>, lincoln said the recalled pcv only had a 1 yr warranty, but luckily i already had the valve in hand and they showed me how to switch it in 5mins for free and i was on my way.

the old pcv valve was about shot after roughly 30k miles and roughly 3-4 yrs. from what ive read a shot pcv valve might be enough to push oil out of existing leaks, making them worse... so who knows if some of the reported and semi-notorious <?> v6 oil leaks are being caused by unmaintained pcv's...