I was running my car today and i finally got up enough nerve to take it for a spin. I drove it about three miles and everything was going perfectly. I floored it and it started pulling hard and then clouds of smoke from under the hood. I pulled over and looked and the top of the motor was covered in oil. I looked around a bit and found that it had come from a nipple that i welded into the filler neck. I have not installed the catch can yet so the nipple was open. I don't know if it was blown out or sloshed out by the Gs. It looked like about a pint of oil so even if i hook up the catch can it will fill it quick. I am going to try and figure out how to move the nipple so that it can't pickup oil, only crack case vapors. The only thing i am worried about is that it is blowby blowing the oil out. Has anyone ever had oil sloshed out under acceleration (not cornering)?

TIA
Allen

 

Sounds like blowby to me.
See this thread:
https://www.rx7club.com/forum/showth...t=Blowby+cover

Did you overfill the oil? Positive there are no leaks?
This is usually not a problem when not cornering. I imagine it could be though if you capped or somehow reduced the oil pans ability to breathe.

 

I went ahead and redid the filler neck and problem gone.

 

13b-rx3

where did you relocate to? my friend seems to be having the same problem and his catch can fills up really fast.....any photos of the new location?

kenn

 

I built a longer filler neck that angles forward and up. The oil would have to work against the G force to slosh the oil out now. I will get some pics up in the next day or so.

 

I drove it again today and it works flawlessly! I also made a catch can that i mounted on the inner fender.

I knew that old motorcycle exhaust would come in handy some day.

 

Got some more pictures of the oil can? Looks good.

 

Would the racing beat pan baffle plate stop this as well?

 

I am running a Moroso pan, it comes with the baffle and is currently installed.

 

Well i thought the problem was fixed but i was wrong. I had the car dynoed and there was not ANY oil coming from the filler tube during the 15+ pulls on the car at up to 22 PSI. I went and drove it today and the exact same thing happened. I don't know what else to try. I am using the stock FD dipstick with the Moroso pan. When i changed the oil it took about 5.5 quarts and the level is right at the top of the range on the dipstick. I don't know what else to try, any suggestions guys???