Have a Jim's 116 that has been running fine for years. Just started blowing oil out of the head breathers. Left on a 8,000 mile trip and just today it's dumped a quart and a half. When stoped oil was running out of the breather. It's still 5 speed and as long as I keep it under 70 it's ok. Get it to 80 and it's blowing oil. So I'm on back roads running 65 trying to keep it together. Sure could just some thoughts on what's going on.
Thanks.
Breathers may be weak, torn, stuck, ?? One or more cylinders has blow by and is adding extra pressure to the crankcase.
Time do perform inspections, check leak down, etc.
:agree: ..... and do a suck and blow test on the breather lines.
how is it running otherwise? Low on power? Sumping? Scavenge oil pump failing? I would get 'er home!
Quote from: PoorUB on July 19, 2020, 07:12:37 PM
how is it running otherwise? Low on power? Sumping? Scavenge oil pump failing? I would get 'er home!
Seems to run ok, it's pinging now over 3200rpms. I ass/u/me it's because of the oil being sucked in.
Not saying there may be any problems,but my 98" build with the 5spd will push oil out of the breather hoses when I run over 75mph.Keep it around 72-73 and everything is fine.Start running up around 80mph and it makes one hell of a mess.Need more gears 👍 Coff 06
Geez, my 95" in my 2005 would run over 100 MPH until the tank was empty, fill up then do it again.
Quote from: Coff 06 on July 20, 2020, 09:50:37 AM
Not saying there may be any problems,but my 98" build with the 5spd will push oil out of the breather hoses when I run over 75mph.Keep it around 72-73 and everything is fine.Start running up around 80mph and it makes one hell of a mess.Need more gears 👍 Coff 06
That would actually worry (and probably annoy) me a little. Checking breathers for function and doing a leakdown test to see if the engine would tell me anything.
Quote from: 2Lane on July 20, 2020, 11:20:20 AM
Quote from: Coff 06 on July 20, 2020, 09:50:37 AM
Not saying there may be any problems,but my 98" build with the 5spd will push oil out of the breather hoses when I run over 75mph.Keep it around 72-73 and everything is fine.Start running up around 80mph and it makes one hell of a mess.Need more gears 👍 Coff 06
That would actually worry (and probably annoy) me a little. Checking breathers for function and doing a leakdown test to see if the engine would tell me anything.
I agree. I cruise at 80 mph often on my 95" five speed, often run at 90 and 100 mph, and never have any blow-by, over 100,000 miles on the motor. To the OP, if it worked fine from the beginning, and now all of a sudden it doesn't, something is wrong and needs addressing, sooner rather than later.
If the engine is mechanically sound it's possible there is a leak (gasket/seal) that is sucking in enough air to push oil out...base gasket, dipstick etc.
Same here, my 113" with 50K on it doesn't use or blow a drop of oil, even at 100+. Something has to be wrong there dude.
Hope you make it home OK johnwesley.
-JW
It's dad's bike. He stopped at a dealer and they gave him the oil pump is going out. So we are taking him one of my bikes and Hauling his to C&C they'll get him hooked up and fixed.
Thanks for all the help and advice
Good luck, hope it gets sorted quickly for him.
If that JIMS(S/E also) crank in buggered, that could do it also.
Sounds like you'll know soon.
What did you find out?
Quote from: snowangel on August 23, 2020, 05:33:48 AM
What did you find out?
No answers yet, at the dealership waiting for some info. The is a noise in the motor they haven't figured out yet. Their belief is the o-ring on the oil pump but hasn't been verified yet. I'll let ya'll know when I have a firm answer.
:wtf:
The bike has been at the dealer for a month and they don't know what is wrong yet?!
It should be fixed by now!
Quote from: PoorUB on August 26, 2020, 09:45:36 AM
:wtf:
The bike has been at the dealer for a month and they don't know what is wrong yet?!
It should be fixed by now!
No doubt and thus the reason to do your own work if at all possible.
Quote from: PoorUB on August 26, 2020, 09:45:36 AM
:wtf:
The bike has been at the dealer for a month and they don't know what is wrong yet?!
It should be fixed by now!
It's dads bike and he has his favorite back so no rush on the RK. The dealer knows as much and will get to it when they get some tables cleared up. Owner is a friend if the bike was needed it would be done ASAP. What dealer would deliver the bike from Iowa to Arkansas no charge when done. :wink:
It's either detonation or a pump issue.
Since it's speed related I'll take "Detonation, for 500 Alex".
Quote from: Burnout on September 01, 2020, 09:36:41 PM
It's either detonation or a pump issue.
Since it's speed related I'll take "Detonation, for 500 Alex".
We will see for sure, but it is a a low ccp motor 10.1:1 sns 585. I need to call and find out, but I've been on the road and haven't had an Opportunity.
got word on the bike today, the issues weren't readily available so they had to dig in. Several issues with the motor 1st the piston to cylinder clearance was outside of spec (0.004). The breathers didn't have the foam installed in them and last but not related to oil mist is the vavle springs were hitting. The oil pump was good all O-rings in good shape and the rods were good. So to get it back right the heads need to be radiused for the springs and new pistons cylinders. Some times having an engine built just for the way you ride bites you in the butt.