BoOsTin FD

Well i'm gonna start a new thread since nobody was paying attention to the one i asked this question...

I've been using Jaz catch can for like a year now. I never had any problems... until tonight. I did some on street tuning and i made couple of hard pulls etc. Well I didn't hear anything or smell anything but when i came back to garage i poped the hood and i see that the catch can got full and all he oil sprayed everywhere through the filter on the top.

Now i checked the damn thing and emptied it yesterday. It hasn't been driven at all until tonight. Basically it was empty.

So anybody have any sugestions why this happen? Only thing that i did yesterday was install The Greddy 2 row fmic which requires moving the radiator etc.

Jaz catch can is connected to both nipples on the oil fillere neck... that's it. It's been like that for a year now with no problems.

Why did that can fill up so quickly? What causes that much blow by?

Thanks

DaleClark

iTrader: (55)

That's a tricky one.

If you only have the catch can plumbed into the oil neck and that's it, that's good. I have the exact same setup - I just empty my catch can at oil change time, and just get a little gunk out of it.

Are you running a lot of boost?

Dale

Mahjik

iTrader: (1)

Is your car smoking any? Seems like you are pressurizing your oil system. Is there anything else that has been done lately?

angelck022

i am pretty sure I have an issue with pressure in my oil system also. After talking with some rotary guys around my area about this issue, they mentioned drilling tiny holes in the oil cap to relieve pressure in the oil system and lessen the strain this pressure puts on oil rings. Have any of you experimented with this?

BoOsTin FD

I'm not running a lot of boost... 12-14psi. The thing is this has never happend before....

BoOsTin FD

The engine has been rebuilded, i moved the coils to the fender where cruise control used to be, made my own Ignition wires... Installed Fmic, Moved radiator upward, relocated AST.

The last thing i did, because i couldn't fit the Apexi intake down on the primary turbo, i got a mesh from home depot and clamped that over the pipe so that nothing can fall into it. Basically just like the guys with single do when they can't fit the filter in... I doubt that should cause anything as i'm not running the hose from the oil filler neck to the primary turbo inlet.

I cleaned the Catch can today... it was full with white/yellow/brown substance that smelled like fuel and i reinstalled it. I also changed oil and filter, even though it only had 150miles on it. It smelled like fuel but it was clean.

That's pretty much it.

It doesn't smoke at all. I am running a hi-flo cat instead of midpipe so if there was any smoke i think it might muff it away.

jd to rescue

iTrader: (3)

Even with a hi-flow cat, it should still smoke heavily when cold if there is an internal problem with the engine, which I think is what Mahjik is pondering.

KevinK2

could be a rotor side seal started a leak while tuning. compression check would help. foul stuff in the overflow, and fuel in the oil ...

Herblenny

iTrader: (13)

I think this might be the problem.. Go ahead and reconnect the hose to the filler neck and the intake nipple.. See if this helps.

BoOsTin FD

It's been running without that for a year now. There is no hose connected there becaues i'm using both nipples on the oil filler neck to go to Catch can. It's no like i just disconnected that hose last night or something. Even when i had a filter there, i still didn't use that nipple.

BoOsTin FD

I always had fuel smell in the oil and catch can always had some kind of yellowy substance. This is nothing new to me... other then it filled way to quickly...

trini

iTrader: (2)

try this. one hose from filter neck to 1 nipple on catch can and then leave the other nipple vented. so it could breath. the oil will go to teh path of least resistance. in teh oil catch can. and the pressue will get vented out the open nipple. if you have the twins still run an oil line from the nipple that was gona get vented to the primamry turbo inlet...

BoOsTin FD

The Jaz catch can already has a filter breather at the top... So both hoses that are going from the filler neck are going to the catch can and they are both vented throught the catch can.

As i said earlier... i ran this setup like this for a year now... no problems. This just happend last night for no reason... at least none that i can think of.

trini

iTrader: (2)

sorry bro my mistake. good luck with finding the problem.

KevinK2

fuel smell with 150 miles on an oil change? perhaps with dual coolers.

DaveW

I'm thinking that for some reason (overfilled oil, bad oil-pan baffling, etc.) a large amount of oil reached the filler-neck nipples and, therefore, was expelled into the catch tank. This is a fairly common occurrence on race cars (I have a Formula Continental SCCA racecar). Just having excess crankcase pressure, by itself, will not expell that much oil that quickly to the catch tank.

Therefore, I'd look for an oil-baffling problem, or determine whether the crankcase was overfilled.

Marshall

Did you recently do an oil change?

scooterrx-7

i had the same prob with my old fd. after a few hard pulls, my can would be full.. ounce or twice i had the oil spray out of the filter all over the place. i aslo had mine hooked up the same way as you, so after having this happen, i caped off both filler neck nipples and drilled and tapped a hole in the oil cap and installed a earl's 90 degree hose connector(threads at one end and a hose nipple at the other) that seemed to help the problem a lot. i was told it helped due to the oil having to slush/blow farther up the filler neck that the original hose fittings. If that doesn't help, there was a guy who made a baffle for his oil cap out of a metal turkey baster.. do a search.

BoOsTin FD

I changed the oil yesterday... drove it today for like an hour or so. Went on a long trip kind off... I was boosting it and stuff.. Came home, checked the can and it was empty.

So i don't know what happend that night, but it looks like it's all well now.

Mahjik

iTrader: (1)

What weight oil are you using? Maybe the combination of some heavier oil weight and the cold weather caused some higher than usual oil pressure (which pushed oil all over the place as you got on it a few times).

BoOsTin FD

I use 10w-30 Castrol oil. Regular one not synthetic. Been using that for 4 years now.

Mahjik

iTrader: (1)

Yep, that would be just fine. I was just curious if it was something like 20w50.

SomeGuy_sg

It could be as simple at you over filling your engine with oil. The extra oil under pressure would find a break in the system to go. Usually it would be the dip stick it would come out of but your catch-can might have been the path of less resistance since it was vented.

AgentSpeed

Try this:

http://reganrotaryracing.tripod.com/catch.htm

That's the set up I'm using. It's worked very well for me.