Oil pushing, any road racers on here?

Himark · Jun 13, 2005

I have a 347 and am experiencing excessive oil pushing into my catch can. I also have my breather lines from the valve covers in the rear. I was thinking of flipping them around to the front to see if it will help but still feel the crankcase preasure is just to high. The motor has about 400 miles total on it and also has oil restricters with edelbrock alum. heads that should have large enough gallies IMO. Would the PCV system have much of a impact on this? BTW, it only does this in the class one races when its turning 8k. Any racers have some ideas?

ForceFed70 · Jun 13, 2005

Himark said:
I have a 347 and am experiencing excessive oil pushing into my catch can. I also have my breather lines from the valve covers in the rear. I was thinking of flipping them around to the front to see if it will help but still feel the crankcase preasure is just to high. The motor has about 400 miles total on it and also has oil restricters with edelbrock alum. heads that should have large enough gallies IMO. Would the PCV system have much of a impact on this? BTW, it only does this in the class one races when its turning 8k. Any racers have some ideas?

I'm not a racer...but I will throw out an idea.

If this is a race motor, you probably have some upgrades done to the oiling system. Could the oil volume be so much that it's having trouble draining back down into the crankcase fast enough? Resulting in a buildup of oil in the valve covers.

Himark · Jun 13, 2005

Sorry should have mentioned it is a standard oil pump not a high volume. Also the oil is always on the right bank due to the majority of track corners being to the left.

2nd Mustang · Jun 13, 2005

No problem here, can't get anywhere near 8 grand. Sorry, I just had to say that. Maybe a vacuum type setup to the header collector to burn up the excess, windage tray, etc.

TT670 · Jun 13, 2005

Youre spining a 347 at 8k? wowza!!

bnickel · Jun 13, 2005

if it only has 400 miles on it the rings may not be fully seated yet. also a pcv system would make a difference but i'm not sure how much it would help at 8 grand. you may want to consider a windage trya if you don't already have one. another option is to run oil drainback lines from the valvae cavers back to the oil pan, they used to this a lot on the early boss 302 t/a cars and the group 2 (?) cars before that. basically you weld a fitting at the front and back of each valve cover and a corresponding fitting for each in the oil pan and connect them with either -8 or -6 (i think) braided line, just be sure to route them so they don't contact the headers

D.Hearne · Jun 14, 2005

TT670 said:
Youre spining a 347 at 8k? wowza!!

I second that 8 grand in a 347? Got to have an aftermarket block to keep it all together at 8 grand. Yea, it would help to move the breathers to the front of the valve covers and to the left bank cover.

Himark · Jun 14, 2005

I am running a Mexican block but still a Ford block with no troubles yet. It doesnt turn 8k all day by any means but does mid 7's with the occasional 8

jst6 · Jun 14, 2005

the problem is not the oil pressure from the pump or the windage tray, drag racers experience this problem also. there are some kits that take care of the crank case pressure that pushes the oil out of the motor (usually thru the pcv valve). Moroso makes one that is inexpensive that installs into your headers. you have to drill a hole in each header and weld a bung in the hole and a hose runs up to the pcv openings in heach valve cover. the headers help pull some of the vacum out of the crank case and if some oil gets pushed through it just drops into the header and burns up on the way out the exhaust. the other option is to spend big $$$ and get a crank case vacum pump. they do the same thing but with much more efficiency. usually guys with really big cubes (read 400cu and up) get the pumps when they are running 1200 hp. for road racing the Moroso kit would be plenty.

check summit or jegs. the kit should be around $60.

HistoricMustang · Jun 14, 2005

Himark said:
I have a 347 and am experiencing excessive oil pushing into my catch can. I also have my breather lines from the valve covers in the rear. I was thinking of flipping them around to the front to see if it will help but still feel the crankcase preasure is just to high. The motor has about 400 miles total on it and also has oil restricters with edelbrock alum. heads that should have large enough gallies IMO. Would the PCV system have much of a impact on this? BTW, it only does this in the class one races when its turning 8k. Any racers have some ideas?

As a road racer you will dump oil into the can. One reason it is there so the can catches it rather than the front wheels.

Mine has a drain valve (aka radiator style) and after each event I simply dump the excess. Another problem you will have with the Ford small block at high RPM's is blowing oil out the dip stick tube. Simply put a spring on it!

With excessive RPM's for extended periods of time oil will seem to come from everywhere. When I go to Lowes Motor Speedway where you run the entire 1 1/2 mile oval plus the infield it takes several days to clean up the excess oil. Just part of having fun!

"Get 'er done!"

HistoricMustang
www.historicmustang.com/tech.html

Oil pushing, any road racers on here?

Himark

ForceFed70

That's why they call it "dope"

Himark

2nd Mustang

TT670

bnickel

D.Hearne

New Member

Himark

jst6

HistoricMustang

Active Member

Similar threads

Oil pushing, any road racers on here?

That's why they call it "dope"

New Member

Active Member

Similar threads

Privacy & Transparency

Privacy & Transparency