A question for Y'all --It's a 03 Road King with a stout 95" - 230K miles - 170 on a complete rebuild - trued & welded MOCO wheels - Screamin Eagle Cylinders at that time. Bored .020 at 150 K miles. Wisceo pistons & rings- about 60-70 K on these rings . The heads are vented to the atmosphere into a catch can. It's blowing a LOT of oil, The engine still runs strong- no change there - cranks at 200+ , fueling oil pump & cam plate.- Welded flywheels - Woods 6H Gear drive & all the other stuff.
I just did the umbrellas & breather assembly - no change
The question is - Before I do new rings - is there any else I should look at?
Thanks - Jim

 

Compression and leak down test are the next steps before doing anything.

 

Before I even bothered with a compression test, I would check the oil level... is it possibly over-filled?

 

With all that work and the mileage, did ya ever replace the Umbrella Valves in the heads? I'd look at that 1st.

 

If the compression is OK, pull the oil pump and replace the O ring between the pump and the case..

 

OK - Thanks - I have some oil pump o rings, That could fail from just age & miles? That pump has been in there for maybe 140 -50K miles - If that fails then there will be a problem with scavenging the oil ? Right ?

 

Heat kill the rubber, makes the O ring hard. Make sure that the new O rings are Viton.

The oil pump is really 2 pumps, feed and scavenge. If the scavenge pump fails, it will cause the scavenging problem.. Make sure the scavenge pump is still in good condition.

 

Easy, quick and worth a look.

 

Thanks Guys - I have a couple Fueling o ring kits

 

I checked the compression again today & it was low - ordered rings - Thanks to Y'all for your suggestions