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Airbox oil fix and ecu upgrade

Modern 961 Norton Commando Motorcycles

Re: Airbox oil fix and ecu upgrade

Postby pingu-nz » Sat Aug 05, 2017 2:36 pm

Update

Airbox oil not fixed

Today on a ride, catch-bottle puked oil all over back tyre brake caliper and exhaust :shock:

For the last 500 km the bottle has showed 5mm of oil in the catch-bottle.
No oil has been added to the bike half way on the dipstick .

Image

I emptied bottle on side of road and limped home,catch-bottle was full again .

Removed seat and air filter,oil in the air-box.. why wasn't this showing up in the catch-bottle before.



Image

Image

I inspected the lid on the catch-bottle,the hole was that small a sewing pin couldn't push through .

So that means the air-box issue isn't fixed on my bike .

I would suggest anyone with the catch-bottle fitted on there bike check the internal size of the hole to make sure oil can get through otherwise it could be building up in the air-box without you knowing it ,

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Re: Airbox oil fix and ecu upgrade

Postby BritTwit » Sun Aug 06, 2017 7:37 am

pingu-nz wrote:Update

Airbox oil not fixed

Today on a ride, catch-bottle puked oil all over back tyre brake caliper and exhaust :shock:

For the last 500 km the bottle has showed 5mm of oil in the catch-bottle.
No oil has been added to the bike half way on the dipstick .


I emptied bottle on side of road and limped home,catch-bottle was full again .

Removed seat and air filter,oil in the air-box.. why wasn't this showing up in the catch-bottle before.



I inspected the lid on the catch-bottle,the hole was that small a sewing pin couldn't push through .

So that means the air-box issue isn't fixed on my bike .

I would suggest anyone with the catch-bottle fitted on there bike check the internal size of the hole to make sure oil can get through otherwise it could be building up in the air-box without you knowing it ,


Paul,

Did the dealer install the new large "S" shaped plastic manifold on the crankcase breather behind the cylinder block that comes with the breather kit?
This manifold is supposed to catch/accumulate any oil passed by the crankcase breather preventing it from getting to the airbox above.
It the rocker cover breather is blanked off from the airbox, only way to get oil in the airbox now is if it is coming from the crankcase; past the new manifold.

I'm still waiting for my breather kit (ordered it in April) but your experience is not exactly confidence inspiring to me. :(

Fred
1975 850 MKIII Commando
2013 961 Commando Cafe Racer
2006 Triumph Bonneville T100
2003 Ducati 999
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Re: Airbox oil fix and ecu upgrade

Postby pingu-nz » Sun Aug 06, 2017 10:57 am

Yes Fred

It has been installed by the dealer,
I would presume there would be a instruction sheet for the correct installation.
Which now means the oil is coming via the crankcase breather.
Maybe its always come from the crank breather and not the tappet cover ?


cheers
Paul

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Re: Airbox oil fix and ecu upgrade

Postby BritTwit » Sun Aug 06, 2017 2:25 pm

pingu-nz wrote:
Maybe its always come from the crank breather and not the tappet cover ?


I would say it appears this is the case now.
Damn.
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Re: Airbox oil fix and ecu upgrade

Postby TonyA » Sun Aug 06, 2017 7:01 pm

Hello Pingu-nz , Is there any oil being wet sumped to the crankcase ? When you park your machine for the night or for the week does the oil level drop at all ? If you are still wet sumping the air/oil separator cant stop that much oil at one time. Do you have the newest return side check valve ? The first return side check valve I had installed on my bike slowly let oil back into the crankcase. If I drove the bike everyday this was not a problem because the leak off was slow. BUT If I waited a week then I could see the level had dropped on the stick , Mind you I still had oil in my oil tank it did not all leak away. Then when I started and drove it there would be some oil discharged into my airbox. It is the process of excessive wet sumped oil when the machine is parked that causes this. You should replace the stock Norton air box oil drain hose with a larger diameter hose like the one Richard-7 supplies with his Trans vent kit. This hose is much firmer and wont collapse like the original one does. Also make sure that there is not any obstruction in the brass oil drain fitting at the bottom of the airbox as well. I will say that the oil breather update is a vast improvement over what we had originally. In 8 hours I would loose my entire oil tank supply to the sump. This is not the case now. Also the original breather coming from the rocker cover was continually pushing small amounts of oil to the airbox as you drove. The rate on my machine at 70MPH was 1ML per mile driven NO JOKE ! The current breather fix is a VAST improvement over what we had ! Also the best way to get an accurate oil level check is to drive the machine leisurely a couple of miles first , then park and check it . Idling alone does not bring enough oil back to the tank in a reasonable amount of time if you've wet sumped some.

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Re: Airbox oil fix and ecu upgrade

Postby pingu-nz » Sun Aug 06, 2017 10:48 pm

Yes
Tony that is a good point , wet sumping.

It hasn't done it before but with the changes its a possibility.
If the bike wet sumps then the oil has got to go somewhere.
The oil in the air-box was definitely clean oil, not milky watery crap.

OK, over the next week I wont start the bike and see if the oil level drops on the stick.

The 2 check valves have been installed on the oil lines as per the upgrade.

I have enlarged the hole in the catch bottle lid so any oil into the air-box will show sooner.

I have also added some stainless poli pad into the air/oil separator to give it more internal surface area for the oil to not get past . lets see how that works :D

keep you posted

cheers
Paul :mrgreen:

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Re: Airbox oil fix and ecu upgrade

Postby Bluedog 55 » Wed Aug 09, 2017 3:55 am

Hi Pingu-na

I checked mine today after reading this, went for a ride but since it was installed have done 3000k so was expecting the worst as my little bottle had only around 10 ml, but there was only around 20ml in airbox. The opening in the bottle was small but would not have mattered in this case I don't think, I opened it up slightly so will see if it makes a difference. I've only topped up just under a 1/2 litre since 8000k.
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Re: Airbox oil fix and ecu upgrade

Postby pingu-nz » Fri Aug 11, 2017 9:15 pm

Update

Checked oil level each day over the week, same mark on the dipstick.
Haven't started or moved bike so I'm confident it doesn't wet sump.

Will take it out for a ride tomorrow and see how it performs with the catch bottle empty, and the Stainless wool in the air/oil separator.

cheers
Paul

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Re: Airbox oil fix and ecu upgrade

Postby TonyA » Sat Aug 12, 2017 7:31 am

Yes , let us know . Thanks

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Re: Airbox oil fix and ecu upgrade

Postby BritTwit » Sat Aug 12, 2017 7:48 am

Paul,

Any problems with the anodized bolts that you used to replace the rocker cover breather banjos?
Did you loctite them in place?
Are they free of leaks?
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Re: Airbox oil fix and ecu upgrade

Postby Britfan60 » Sat Aug 12, 2017 12:23 pm

My oil level hasn't changed in 2300 miles with the upgrade. Prior to that, I was losing about 600 - 700ml per thousand miles.
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Re: Airbox oil fix and ecu upgrade

Postby pingu-nz » Sat Aug 12, 2017 2:44 pm

BritTwit wrote:Paul,

Any problems with the anodized bolts that you used to replace the rocker cover breather banjos?
Did you loctite them in place?
Are they free of leaks?


No problems
They look great no leaks
You have to remove the cover to install them
And they screw into the existing nuts used for the banjo bolts

And whilst in there
Torque head nuts
Check tappet clearance

Far better option that the plastic bungs supplied by Norton

http://www.ebay.com.au/itm/M14x1-5-BLAC ... 2749.l2649

cheers
Paul

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Re: Airbox oil fix and ecu upgrade

Postby pingu-nz » Sat Aug 12, 2017 11:36 pm

Tony

Took the bike out for a 100 km run today .
Not a drop of oil in the catch-bottle or the air box.

Only change to the bike is the stainless poly in the air/oil separator .

cheers
Paul

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Re: Airbox oil fix and ecu upgrade

Postby Panetone » Sun Aug 13, 2017 12:51 am

Hello Paul,

do you put the wool through the little holes or have you split the separator ?
How many wool have you put inside ?

Regards

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Re: Airbox oil fix and ecu upgrade

Postby pingu-nz » Sun Aug 13, 2017 3:01 am

Pantone
Take the separator off the bike ,
I put the poli through the holes, rather a tedious job.
I put about half of the scourer in the separator.

Image

It will make more surface area in the separator to stop the oil getting through.
Make sure there are no small bits that can make there way down the hose.

cheers
Paul

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