Engine Mechanical TopicsDiscussion for motor builds, cams, head work, stripped bolts and other engine related issues. The good and the bad. If it goes round and around or up and down, post it here.
Ok this is my bike 2003 Harley softail heritage classic the motor has been built up 95 big kit, 585 lift cam gear driven,screaming eagle heads port ant polished, oversize valves and a Jim’s stroker crank,wiseco 10.5 flattop pistons, a super E carburetor,dynatek ignition.
I have Vance Hines big radius
Now this my problem the rear jug keeps getting oil in it. They are new rings and pistons and compression is good. The oil is coming from the intake. From the crankcase breather vents. Not getting in front jug due to the way the intake leans back to the rear. This what I think may be wrong. That’s why I am posting. Any help or opinions out there would listen
To help to control crankcase oil mist being ingested into the engine's intake tract, we enlarge the drain-back holes in the rocker support plates to .125-.130".
Scott
__________________ HILLSIDE MOTORCYCLE & MACHINE, INC. HARLEY-DAVIDSON SPEED & SERVICE CENTER 5225 SOUTH MAIN ST., MUNNSVILLE, N.Y. 13409 Sales/Support 315-495-6650 www.hillsidecycle.com Walk-in Retail Showroom
Complete H-D Machine Shop
Case & cylinder boring
Complete Cylinder Head Shop
High-Performance Engine Kits
Crank Rebuilding
Direct Link & PowerVision Tuning
Goodson HD Tooling Manufacturer
Maxton Mile World Record
4500 sq ft. facility OVER 35 YEARS OF H-D ENGINE BUILDING.
See us on Facebook.
Last edited by Hillsidecycle.com; 06-20-2018 at 06:12 AM.
an open breather might not be the best option if youre blowing out alot of oil....
just to refresh my mem..
you have 2 breather hoses going to a plastic Y fitting then into a single carb vent.. correct?
you can always try oil vent check valves.. they open only when the engine is running and close when no vac is pulling
I have white smoke and oil on rear plug
My buddy that rides with me says it is very prominent when I really get on it. Other wise not very noticeable on the s&s carb in take there is a low spot and it always has oil on it. I will look at check vale
To help to control crankcase oil mist being ingested into the engine's intake tract, we enlarge the drain-back holes in the rocker support plates to .125-.130".
Scott
thats is an idea. Just not wanting to tear top end down again. But my not have a choice. Thanks for info. On my heads. There is that spong infer the cap that is supposed to help with my problem
do you think it my be causing moreo f a problem then it is helping. Again thanks for feed back
Curious note from the OP; how is it that the motor is 95" with a Jim's stroker crank? Just curious.
I noted that the bike is softail and plenty of softail owners often forget that since the oil tank is above the crank case, gravity will let oil pass from the oil tank to the crank case which often results in owners over filling. If over filling is not causing the oil issue, drilling the drain back holes to .125" as has been suggested is a good idea but I doubt it will solve such a severe issue. Drilling the drain back holes and replacing the early breather assemblies with the later stamped assemblies would be a worth while next step.
Curious note from the OP; how is it that the motor is 95" with a Jim's stroker crank? Just curious.
I noted that the bike is softail and plenty of softail owners often forget that since the oil tank is above the crank case, gravity will let oil pass from the oil tank to the crank case which often results in owners over filling. If over filling is not causing the oil issue, drilling the drain back holes to .125" as has been suggested is a good idea but I doubt it will solve such a severe issue. Drilling the drain back holes and replacing the early breather assemblies with the later stamped assemblies would be a worth while next step.
its not a 95 inch motor 95 inch jugs bored over .030. It is closer to 106inch. My bad overfill good point I will have to take a look. Make sure I only check with motor warm. Just a habit to check oil before I ride. If it was full when parked should be full when I start. Thanks for in put
06-17-2018, 12:17 PM
Oil on rear plug need some help
