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Author Topic:   oil out breather caps?
dode
Dirt Freak

Total posts: 417
posted May 03, 2002 08:52 AM UIN: 13209501
We have a decent amount of oil coming out of the breather caps and I was wondering if there is any way around that. The breathers are installed on the drivers side, and we are running SAE 50 weight oil. The car runs well, but it tends to leak on the manifolds and start fires (yeah, we know from experience). Is there any tricks to this or what should we do? Thanks.

John

racer17j
Dirt Forum Champ
Total posts: 1565
posted May 03, 2002 09:09 AM UIN: 54865418
we have taken shop rags and zip tied them around the breathers also you could take some old radiator hose and tubing and put the hose on the valve cover tubes and then mount the breathers on the end of the hose and tie then to the front hoop bars

dode
Dirt Freak

Total posts: 417
posted May 03, 2002 09:34 AM UIN: 13209501
Yeah, I had definitely thought about relocating them somewhere else. Just couldn't find a good spot for them. Thanks for the tip about the rags. That might work out ok. I would rather not have to use the fire extinguisher this week if at all possible.

John

dirtracer14
Dirt Freak

Total posts: 499
posted May 03, 2002 11:35 AM UIN: 23443678
The other you could check is if there are baffles in the tubes, and if they have been bent open more for adding oil faster. If they are bent way up or way down try to close up the gap some if not the rag work good or i have used socks on mine so that when you pull em all the way on there is a lot of sock bunched at the bottom to hold alot of oil befor it drips. Oh ya one other thing i did was to push the breather all the way down on the tube, it seemed to help some. Good luck

dode
Dirt Freak

Total posts: 417
posted May 03, 2002 11:41 AM UIN: 13209501
Hey, I like the sock idea. I wear size 16's, so my socks are plenty big . Thanks for the tip. Also, the baffles aren't bent. I did already check that, and they are pointed the correct direction.

John

Azrace
Dirt Roller

Total posts: 25
posted May 03, 2002 12:33 PM
If your breather tubes have baffles in them take a piece of foam ( fuel cell foam works great) and cut a piece 3" square or so and stick it in the tube before you put on the breather filter. The rag deal works ok, but if you soak the rag the oil will still drip on the header and possibly cause that fire again.

dode
Dirt Freak

Total posts: 417
posted May 03, 2002 01:15 PM UIN: 13209501
Your idea sounds pretty good Az, but you kinda lost me. where does the foam go? Are you talking about putting the foam inside the breather tube? I would assuming that the fuel cell foam compresses nicely? Unfortunately I don't have any of that tonight. The only thing that I have resembling that is roll bar badding, but I am guessing that wouldn't work very well. Rags maybe? Thanks guys.

John

driver27
Dirt Full Roller

Total posts: 69
posted May 03, 2002 02:24 PM
AZ is right on the money. It must be an open cell foam, like fuel cell foam or you can get a very coarse sponge like at home depot or lowes. The Key is it must be open cell. Cut a chunk the size of the inside of the vent tube and slide it in, it allows the engine to breath, but the oil drains back down the tube. Try it youd be amazed. The other option is to tighten the engine up with a ring job, which is the real cause of the blowby problem.....

Azrace
Dirt Roller

Total posts: 25
posted May 03, 2002 02:32 PM
Thanks 27, you are exactly right. You just want something that will stop the oil from blowing up into the filter. The engine still needs to breath.

dode
Dirt Freak

Total posts: 417
posted May 03, 2002 02:32 PM UIN: 13209501
The engine has done it from ever since the first race, and it was just rebuilt. I don't think that is the problem. I will try and find some open cell foam though. Anyone else have any ideas?

John

dirtracer14
Dirt Freak

Total posts: 499
posted May 03, 2002 02:45 PM UIN: 23443678
Hey i like that foam idea will the oil make it get soft or will it be ok? I have been worried about putting somthing in the tubes for fear of peices going down in the head, but that fuel cell foam is pretty tough. The forum is great for stuff like this keep up the good work guys Well off to the races see ya sunday

merlinmech
Dirt Full Roller

Total posts: 51
posted May 05, 2002 12:52 PM
brillo pads inside your breather works good too. They don't fall apart and still breath well.

awkwardjeff
Dirt Freak

Total posts: 458
posted May 05, 2002 04:05 PM
If you are huffing oil and it's a fresh motor it's still a ring problem....the rings haven't seated yet.......us guys with all the big bucks don't have these problems because we go through this on the dyno.................ROFLMAO

I too use the socks on the breathers.....
after about 2 or 3 nights the rings have seated and the oil bath stops. but I leave the socks on anyway.......they won't get so full of oil they drip......


Fast132
Dirt Full Roller

Total posts: 27
posted May 05, 2002 09:08 PM
We use a rolled up piece of scotch brite (plastic brillo type stuff)in the tubes. Works great, breathes well, no mess, no socks....

[This message has been edited by Fast132 (edited May 05, 2002).]

powerglides
Dirt Full Roller

Total posts: 69
posted May 05, 2002 10:14 PM
I would never use brillo or scotch brite as the are both abrasives. some of the oil runs back out of them onto the motor! I have used rags stuffed into the tubes. I have also put a brass sink drain kit on them (don't laugh)and ran one breather up in front of the air cleaner. When she got too really pushing oil I ran two radiator hoses into a jug and poured it back in after the race Poverty is the mother of invention!

BK19
Dirt Freak

Total posts: 285
posted May 05, 2002 11:16 PM UIN: 40696038
i just use a hose(radiator) and basicly extend the breather a litte higher it works great i just do the back one

racer2
Dirt Maniac

Total posts: 166
posted May 06, 2002 08:50 AM
My rear breather did leak on the manifolds
and cause a fire.so i cut the rear one off
welded up the hole and welded the breather back on in front of the other one.and i put a shield over that one under the bottom of cover,works great.

dode
Dirt Freak

Total posts: 417
posted May 06, 2002 08:55 AM UIN: 13209501
Man, this place rocks. I tried the sock idea, and it worked like a charm. Now it is time to move onto bigger problems...

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