jaguarking11

I installed an oil catch can a few months ago. All I can say its working just nice, I even removed the hose that goes to the air intake and no oil is present there. Seems to work properly. The car seems to run just as well as it did before.

Here are some pics of it installed.




Engine bay. (I know its dirty, it will get cleaned and detailed shortly.)


My new ebay special billet oil cap. 15bucks shipped and I painted it black with engine enamel.


The drain plug.


Ok now for the tutorial for making this thing functional.

When I ordered this catch can it was silver (cheepest one on ebay @ 30shiped)

The main problems with this can, it was full of shavings, metal shavings from when it got taped and threaded. Not good. So I sprayed the can with wd-40 and cleaned the shavings out. Looked inside with a flash light and found no more shavings.

The second problem is that none of the fittings had gaskets or teflon tape. Not a problem, just add some teflon and we were air tight.

The third problem was that the finish was fragile and got scratched, I didn't like the silver anyway so I sanded and painted it with engine enamel.

The fourth problem, the intake and exhaust side of the can had very small bore, so I bored it out with the largest bit I could find and a hand drill.

The firth problem, the can had a very short intake side, the whole point in having a can is to get the oil and gases to travel to the bottom of the can, so out came some copper tubing I had laying around and a flared extension was made that goes almost to the bottom of the can, basicaly 3/4 inch from the bottom.

Finally the last problem, the can had no material to trap the oil. My first choice would have been stuffing it with a coarse scotch bright pad or pads so the oil has a chance to get trapped inside the fiber and condese and stay in the can, but I didnt have any scotch bright pads so I used a brand new heavy duty home depot chemical and heat resistant yellow sponge cut in cylinders and shoved in through the drain hole. I used two sponge cylinders at around 2inch thick each so 4inches of material in the can or 3/4full of material.

Here is a pic of the sponge I cut.

07 GT/CS

At the risk of sounding like a booger eating moron, what exactly does this item do?

yur1279

Keeps oil from going into the intake if i'm not mistaken. I'm surprised you had to do all that modding. Would think by now that there would be a complete unit available for our cars.

jaguarking11

There are units out there that are fully built from the get go, however they cost way too much money for what they provide. A moroso setup will run most people anywhere between 150-250bux. I got mine built and running for around 40bux, it would have been 50bux if I didn't have the sponge and copper tubing already. No big deal.

This is my guide to avoiding ridiculous demanding prices for certain things. It works as needed and didn't run me both my *********.

GT5088

good improvisation

07 GT/CS

Do you have a link by chance to an article or information that describes exactly what the product does? I'd be curious to read up on this modification.

HPwhitevert

you might want to check this out. This has a good explanation as to why and how it works and this is one of several methods used to capture the oil mist.

http://ratstangrestoration.com/oilse...stallation.htm

05YellowGT

Great Link !!!

metroplex

If you get even the slightest leak in that setup with the cheap clear polycarbonate bowl (which is designed for use as an air compressor filter, NOT for an engine bay) it will stall out your engine.

07 GT/CS

What happens if you eliminate this hose by plugging it at both ends? How would it affect performance?

metroplex

Disabling the PCV will cause the piston rings to not seal properly and lead to premature wear. The oil that "gunks" up the intake tract will not cause long-term problems. My 81 T-bird never used an oil separator and 28 years later (it was made in 1980), the brake lines rusted out. The engine is still fine.

The only legit reason to use an oil separator for the PCV line is when you want to eliminate oil puddling onto a heat exchanger for the supercharger intercooler or turbocharger aftercooler. If you're naturally aspirated, the oil that builds up on the intake tract is not a serious problem. Eliminating it may allow you to run more timing and squeeze a few extra ponies but if it develops leak, it will cause the engine to stall out.

don_w

And in many cases, a simple breather is a better alternative to the catch can method. I run a breather on my car. One of the best explanations I've seen was this one from Jim Sr at JDM:

jaguarking11

Thats a very good explanation alright. However every few months someone comes to the forum with either a very rough idle or a car that wont start. Seems like the first thing anyone says is clean out the tb. Seems like rough driving puts out quite a bit of oil through the intake. And there is usualy at least a 50/50 chance that the issue gets resolved by just cleaning it.

I chose to run it as I don't like my engine ingesting oil.

don_w

That is certainly true if you still have a vacuum hose connected between the valve cover and the intake. And to be honest, I haven't seen many set ups that use the catch can on that side. Most of them are on the drivers side. My setup deletes the vacuum line entirely through the use of the breather. The pic below shows the breather, and the lack of any connection to the intake tube. This method completely eliminates any chance of oil getting to the TB.


.

jaguarking11

WOWZA thats a nice looking engine. Loving it.

Just one question though, do you get oil spots on the breathers?

I always thought the stock vacuum hose helped clear out the blowby from the crank case and helps keep the oil cleaner. Now insert an oil catch can and you have the system intact with ought reprecutions. Again your engine is blown so it looks to be setup differently.

don_w

Yes, there is a little oil seepage, but no big deal.

Tsbird1994

Hey Don,

Where'd you get the breather that fits our valve covers?

jaguarking11

You can get em at any auto parts store.

scramblr

Less than $40 for breathers on Amazon and a couple of caps to seal off the port on the plenum and one on the intake tube.

• 1 of: K&N 62-1340 Vent Filters
• 1 of: K&N 62-1320 Vent Filters

07 GT/CS

Is that the Moroso radiator overflow replacement you have there, or another brand? Also, what did you do for caps?