I run a 117 " engine high compresssion engine and I got blow by commin out the air cleaner, not a whole lot but enough to be irritatting along side the rest of the engine, oil tank mainly. What causes it do you think and is there and easy fix? Or is it normal for what I'm running? Thanx for any input.

 

How many miles are on the engine and how often do your ride it. High miles (for a performance engine... say 25k) or low use = blowby on a harley. If you go for a long ride and then clean up the air cleaner and then go for a ride the next day, if it clears up then there's nothing to worry about.

C#

P.S. That's what that spot between the lifters is for on a Harley... to catch the oil running out of the air cleaner. <grin>

 

the breathers in the rocker boxes, not draining the oil out TP has a set with an improved breathing system to get rid of this

 

Thanx for the help fellas.

 

Mine did that last year and just redid the breathers and fixed the issue.

 

Mistake and can't figure out how to delete.

 

Double check the oil level.... Too much oil will cause blow by

 

ditto on that last post most common reason for this type of blow by is over filling with oil

 

Real sorry to be getting back so friggin' late on this.... Who is the "TP" you mentioned? Thanx

 

Bump please, still don't know where to find "TP"

PS: oil level is good