Hey Guys, Just Wanted To Know Who Is Running An Oil Catch Can.
Also What Kind. I Am Thinking Of Getting One For My Fd.
Thanks

 

oil catch cans are great if you are running anything other than a factory turbo. otherwise, the twins (unless very worn) do not have enough blow by to warrant such a mod. if you do use a catch can, greddy makes a great product...i'm not sure if they still manufacture it, but you should still be able to find it. Make sure you hook it up properly...if you don't vent the one side you will build up excessive crankcase pressure and start smoking like a pig.

 

Me Me Me...

 

i run an oil dump tube instead. Its a very crafty rubber hose that goes from the oil filler neck to just below the oil pan. perhaps not the most environmentally friendly peice but it gets the job done.

 

B.S. With good factory twins, on a strong engine I've seen an FD I was helping the owner with fully fill a 1 qt oil catch can in 5K miles.

 

i've seen this as well... blow-by and whatnot...

oil catch can is a good item to have.

 

it really depends on what you do with your car also...

 

GT35R: both of the nipples on the oil filler neck go into my homemade catch can, and the can vents under the engine compartment.
Prevents oil blow-by from being ingested back into the turbo, IC, etc and keeps them all clean and free of oil.

I only have liquid buildup in the winter as the cold condences some vapors.

Originally I bought a small one from JEGS but it would quickly fill up in one day of spirited winter driving and would spill (splatter out).

Make sure that yours is at lease 1 qt in size.

 

I run a catch can on the stock turbos, just put it on about 500 miles ago. Changed the oil today and figured I would see what was in the catch can. Emptied it out and it was mostly oily looking water? I know there is some moisture in the blow-by gases, but this much water? Maybe an ounce or 2 in that short of a time period?

 

Great Info Guys. Also How Do You Hook It Up. Do You Eliminate The P.c.v Or Leave That Hooked Up And Use The Other Nipple On The Oil Filler Neck And Run That To The Catch Can. Then Place A Filter On The Other End Of The Catch Can?

 

where does hose on the other filler neck nipple go anyway?

 

If you dont want to pipe the blow by to a catch can you can pipe it to the down pipe weld nipple in at an angle and it will pull vacumn and keep the block from pressureizing.

 

WHAT!!!!

 

The later US FDs did not have a PCV valve. Many of us have removed it years ago as it is redundant and not needed. Mazda removed it because it was redundant and had some failures of the front cover oil seal due to it failing under boost.

As to busted7: He is suggesting that you use the exhaust as a source of vacuum to suck the fumes from the engine. But this will require a well designed orifice in the exhaust to create the vacuum and a safety one way valve.
He needs to seperate is one sentence paragraph into multiple sentences and explain his concept better.

 

Dudeeeee.

Not cool.

 

1st you need to determine if you actually "Need" a catch can.

Just cause it looks cool in your buddies Civic, doesn't mean you have to have one.

Then you can look here for some more info

https://www.rx7club.com/3rd-generation-specific-1993-2002-16/oil-intake-fix-591228/

 

I don't like it when people purposely dump oil. I ride a sportbike, and oil patches are not cool.

 

friends brother died on his bike because of one.

 

Hes right its dangerous for you and others. Sorry about sentence construction. What i should have mentioned is GM ls1 egr valve is used for orfice. You weld it into the down pipe. As you accelerate the vacumn increases, and the exhaust is hot enough to vaperize any liquid.

 

If running a catch can. . .do you just plug the hard pipe that the nipple originally went to?

 

does that much oil really come out? My oil level stays about the same when running premix. I ride sportbikes too, i didnt realize that much oil actually comes out to make much of a differance. I thought it was mostly exhaust gasses with a bit of oil.

 

It would depend on the amount of blow by and probley boost level.

 

would you need an oil catch can if I was planning to run a single turbo and high boost? also were would i run the other hose from the catch can. like sled driver suggested he vented it back to the primary turbo hard line under the manifold. but with a single turbo do you still have that hard line?