Oil drip into breather

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Mar 24, 2015 | 11:26 AM

#11

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From: Red Banks, MS

Quote:

Originally Posted by Moochoff

Hey guys,

I got my 107 done and dynoed again with a new intake and exhaust. Problem is the intake I got didnt have any where for the oil vent to go so my crank pressurized and puked into the air cleaner. I ran it for probably 30 minutes before I figured out where it was coming from.... I picked up another filter kit with the back plate that vents into the throttle body.

Now it quit pouring out, but now I'm getting an oil drip from the vent. It went from just vapor in the first 600 miles to a steady drip from the air cleaner where it pooled inside.

Am I not getting good enough vent for my 107? Did I mess up a ring causes my cylinder to pressurize the crank case? I won't be able to do a compression test until I get home with it

Thanks!
Jake

Depending on what kind of Air Cleaner you have, you may be able to use one of our Hose Style Set Up's. This would also allow you to be able to vent externally.

Also, the link below may help you out

https://www.hdforums.com/forum/oil-a...oil-level.html

Before venting externally.

After venting externally.

Kelsey

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Mar 28, 2015 | 12:16 PM

#12

Moochoff

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From: Spirit Lake IA

That first piston is pretty gross!

Well it started slobbering out of the intake again. Everytime we stop for fuel, I can pop off the air cleaner and oil runs onto the cam chest cover. I consumed right around 1/2-3/4 quart in right around 3000 miles

I'm thinking I boogered up one of the breather assemblies in the rocker box. I don't think I spun the piston rings around by pushing oil passed them because I have been getting decent mileage still with great power. (35mpg+ at 80mph riding 2 up and bags stuffed full)

Any other suggestions? I'm probably going to pop the tank and rocker covers off and check out the top end gaskets and breathers when I get it back in the garage

Thanks for reading!

Jake

Mar 30, 2015 | 02:21 PM

#13

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From: Hickory Flat, Mississippi

Quote:

Originally Posted by Moochoff

That first piston is pretty gross!

Well it started slobbering out of the intake again. Everytime we stop for fuel, I can pop off the air cleaner and oil runs onto the cam chest cover. I consumed right around 1/2-3/4 quart in right around 3000 miles

I'm thinking I boogered up one of the breather assemblies in the rocker box. I don't think I spun the piston rings around by pushing oil passed them because I have been getting decent mileage still with great power. (35mpg+ at 80mph riding 2 up and bags stuffed full)

Any other suggestions? I'm probably going to pop the tank and rocker covers off and check out the top end gaskets and breathers when I get it back in the garage

Thanks for reading!

Jake

I'm pretty sure that is within HD "Specs". But, of course is not a good thing.

There will always be some oil, which is why we strongly recommend venting to the outside.

Where are you running your oil level, and what ambient temps are you running in?

Some really good info in the following link about proper oil level and oil weight.

https://www.hdforums.com/forum/oil-a...f-my-bike.html

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Mar 30, 2015 | 02:43 PM

#14

Moochoff

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From: Spirit Lake IA

Thanks again DK, we were running everywhere from 37F in flagstaff to 90F in yuma on the trip!

I had a chance to talk to fuel moto this morning and Brian said it was normal for them to leave the oil level at the add mark when doing in house builds.

I checked it in the stand when I got home yesterday. It was probably 55F and bike had been off for a full day. The oil level lands right on, or a hair below the second square from "add a quart". I think ill try taking it down to the bottom of dipstick and run 90mi to work that way

The compression tester I have has 3 fittings but none were small enough for the 96" plug hole.

When I get bored this summer/fall I will probably fab my own breather set but will probably see if I can drain into the exhaust. I had looked at doing this with a 4cyl diesel project I put together because it leaves a black drip after shut down on nice clean pavement....

Thanks for reading!