Airbox oil fix and ecu upgrade

nopdog said:
Paul
Mines the same ride 50ks stop, oil bottle empty, ride another 50ks still empty. Fill up with fuel still empty ride 5ks home oil bottle overflowing. If the bottle hold 50mls then it puked 100mls.
And I can't see how that's wetsumping/drainback after 100km and if it is why isn't the oil pump pumping it back into the frame. If it's wetsumping/drainback whilst running it's a design fault or a faulty pressure relief valve. (dose it have one)
Don't get me wrong I'M IN FOR THE LONG HAUL and will do anything to sort it out.
I'm thinking of bypassing the bottle and putting the oil over the rear chain like the rest of my British bikes.
Simon

Simon
I was starting to think my bike was the only one that did this ,
I have removed the the catch bottle and will go back to the old method of plugging the pipe and draining the air box after every ride .
I wouldn't divert to the chain because it will make a bloody mess and oil the chains of the next 10 bikes behind you :lol: :lol:
I have emailed Kevin at Norton and waiting for a reply .
I am thinking about diverting the air box drain back to the air/oil separator so any oil in the air box will end up back into the sump , the oil is clean oil not milky white blow by.
i will keep you posted

cheers
Paul
 
Well a bit more news on the oil in the airbox issue .
I have installed a air water separator for a air compressor on my norton to replace the black plastic box that Norton had installed.

Airbox oil fix and ecu upgrade

now i have a visual on the air or oil passing through the filter.
Todays ride 80km and low speed , no revs above 4500 rpm ,pulled up and stepped off bike still running . to my amazement oil started puking through the filter into the airbox at a idle while is was standing there.
rode home drained 50-80ml oil from airbox.
Airbox oil fix and ecu upgrade

Airbox oil fix and ecu upgrade

now here is where i got clever
Airbox oil fix and ecu upgrade

I installed a camera to view the filter and went for another ride with camera filming 50 km
same senario ,same riding ,
not a single drop in the airbox .
So I will be recording whenever im riding the bike to find out at what point it is puking oil .

At this stage it looks like when bike is at running temp at a idle not at higher revs when it decides to pass oil to the airbox.

keep you posted
cheers
Paul
 
Paul,

That sounds very peculiar indeed.

It almost seems that when your bike is at operating temp after a ride, and then idling, the oil level is building up in your sump, perhaps due to a problem with the scavenging side of the oil pump. When the oil level reaches a sufficient level, the crank begins pushing oil to the breather and airbox. While your engine is running the scavenge pump should easily be able to prevent the oil from building up in the sump. I wonder if Norton have every experienced oil scavenging problems at idle on these motors?
 
Was I reading somewhere that Norton may have a upgraded oil pump with a better scavenge rate ? It may be worth while to ask Norton about this.
 
Yes Tony
I have inquired about a new oil pump
270 Pound from the factory
Just need Kevin to verify that there is a newer /updated oil pump .
The oil was puked to the airbox in one hit at a idle not gradually whist riding so there must be a buildup of excess oil . which the pump cant cope with .
i will keep the camera on for the next few rides and see what is happening .
At least with the clear filter i have a visual of when and where .
cheers
Paul
 
Hi Paul, love your approach to solving this problem! As you know my oil pump was replaced as part of the effort at solving the same problem on my bike after all the other fixes had been applied. After asking a few times as to what exactly Norton thought had fixed the problem they replied it was the change in the length of the dipstick that's the real fix (and corresponding drop in oil level) . Have you fitted the revised longer dipstick? A lot cheaper than replacing the oil pump!
 
After asking a few times as to what exactly Norton thought had fixed the problem they replied it was the change in the length of the dipstick that's the real fix (and corresponding drop in oil level) . Have you fitted the revised longer dipstick? A lot cheaper than replacing the oil pump!

Yikes! I got a similar recommendation from Kev. Except, in my case, I have not experienced a severe issue with oil in the airbox. Does anyone other than Dave and Richard Coote really understand this issue?
 
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Hi Paul, love your approach to solving this problem! As you know my oil pump was replaced as part of the effort at solving the same problem on my bike after all the other fixes had been applied. After asking a few times as to what exactly Norton thought had fixed the problem they replied it was the change in the length of the dipstick that's the real fix (and corresponding drop in oil level) . Have you fitted the revised longer dipstick? A lot cheaper than replacing the oil pump!
Yes new dipstick installed,
The oil level was half way between the lines on the new dipstick ,
I have emailed Kevin with pictures and she'd if there is a updated improved pump
Wait and see what he comes back with .
 
Mine always seems to have a bit of oil sitting in that area just in front of the starter motor. Not sure where it comes from, I’ve got the transmission vent installed but it still weeps oil.
 
Check all the oil ,air fittings ,possibly has started leaking from starter seal before the vent was installed ?
 
My 961 Sport is away for the oil in the air box fix ,throttle body ,and ecu change over.

2014 model, SC ECU, 7000km, over 1 liter of oil drained out of the air box. erratic starting idle,
dropping to 1 cylinder.

Does any one have any feedback on their experience with the changes ?

Is there a tappet cover available without the banjo bolts that are blanked off ?

cheers
Paul
 
Update.
Removed crank breather from air box.
Installed a water/air separator under swing arm. (2 threaded bolt holes already there)
Run breather hose over tappet cover along left frame rail to swing arm.
Now the oil collects in separator not air box .
Breather outlet straight on to chain, so any oil vapors lubricate chain .
250 km ride today and 30 ml oil drained .
Lets see if the combustion chambers clean up without a oil soaked intake.
Oil in the air box from the day i rode it home . Glazed bores ?
Good luck Kevin French . sorry to see you leave Norton.
cheers
Paul


Airbox oil fix and ecu upgrade

Airbox oil fix and ecu upgrade
 
I thought Kevin was gone a few months already.
Callum has been.
Frankly when Callum was there I had all my orders shipped directly from the Norton factory to my door in Michigan USA in 3 days.
I purchased well over $8000 usd in 3 months time and Callum was great to work with.
I now ordered parts from Kevin and Clem back in August and still get to receive anything even after many emails and phone calls to both guys. Pisses me off that they just blow people off now.
I miss Callum.
 
Mine always seems to have a bit of oil sitting in that area just in front of the starter motor. Not sure where it comes from, I’ve got the transmission vent installed but it still weeps oil.
Bet it comes from the starter motor itself. Internal O ring. Norton had gotten a bad batch from the vendor. Took two seasons for them to figure that out on my bike. Once they changed the starter, I was leak free. Same little pool.....right in front of the starter. Thank you Matt Capri for that diagnosis.
 
Bet it comes from the starter motor itself. Internal O ring. Norton had gotten a bad batch from the vendor. Took two seasons for them to figure that out on my bike. Once they changed the starter, I was leak free. Same little pool.....right in front of the starter. Thank you Matt Capri for that diagnosis.
That’s where I think mine leaks from - a constant little pool sitting in front of the starter. Mine was manufactured in November 2015; would that be when the bad batch was in?
It would be great to have it leak free - like a modern bike......
 
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