Unraveling the 961 part two (oil in the air box)

This looks interesting if your going to change the external oil cooler side non return valve, can actually see it in operation.

From Old Britts, the one I saw was all aluminium but upon enquireing they posted this back, a little window on your oil. I like it !!


http://www.oldbritts.com/13_400001md.html $71us


Ok the clamps need a little work o_O

Unraveling the 961 part two (oil in the air box)
 
I would prefer solid metal in this application. There have been failures of similar items fitted to ‘classic Norton’s’ where they have literally fallen apart.

If that were to happen on your 961 oil return you’d be in trouble !
 
Ok moved my topic of conversation here as was clogging up the "961 parts" thread.

So TonyA, this is what dropped out the crank, 670ml is that right ??? I'm now fairly confused as that seem's a lot for a dry sump but on the other hand seems normal given the oil tank had 2/3s of the knurl on the dip stick and given the pipework and oil cooler that should be about right for 3 Litres from dry. :confused:

1590643411035.png
 
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So...... turns out that the dealer that fitted my Oil/airbox fix kit did not have a sump gasket and used the "make your own" silicone variety.

Was thinking that I'd find a chunk of gasket crap clogging the scavenge (actually was hoping for it to be that simple) but alas it was clear. Only thing I've learnt is that the bike does indeed have the scavenge gauze.

Also learnt how to make gaskets ! bonus !! :p

Trade secret..... the holes just so happen to be the precise size of a AA battery + end.......... perfect template.

1590657648921.png
 
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OK lets remember this , 670 ML out of your crankcase. If you have the one way check valves , very little should come out of cooler side , or either side. You were to take a test drive after emptying the sump as a test run for oil discharging to the air box ? Then park up for a week (no engine starting/no driving) and check sump oil level amount after a week ? OK , I will do a sump drain on mine and I will let you know what comes out of mine after a week or more of sitting . Then we can have a comparison.
 
Bluey72e said:
So...... turns out that the dealer that fitted my Oil/airbox fix kit did not have a sump gasket and used the "make your own" silicone variety.

Was thinking that I'd find a chunk of gasket crap clogging the scavenge (actually was hoping for it to be that simple) but alas it was clear. Only thing I've learnt is that the bike does indeed have the scavenge gauze.

Also learnt how to make gaskets ! bonus !! :p

Trade secret..... the holes just so happen to be the precise size of a AA battery + end.......... perfect template.

View attachment 16540
Click to expand...

Nice gasket job . Rob Jameson stated that Norton were no longer using gaskets on the sump and just rtv silicone. I still have my original gasket on my 961 .
 
TonyA said:
OK lets remember this , 670 ML out of your crankcase. If you have the one way check valves , very little should come out of cooler side , or either side. You were to take a test drive after emptying the sump as a test run for oil discharging to the air box ? Then park up for a week (no engine starting/no driving) and check sump oil level amount after a week ? OK , I will do a sump drain on mine and I will let you know what comes out of mine after a week or more of sitting . Then we can have a comparison.
Click to expand...

Stupid Question.. but want to be sure, Im putting the 670ml back in the tank before my test run right ?
 
TonyA said:
Nice gasket job . Rob Jameson stated that Norton were no longer using gaskets on the sump and just rtv silicone. I still have my original gasket on my 961 .
Click to expand...

I could never understand why the sump gasket was sooooo hard to source by Norton. When my dealer got the oil-in-airbox kit, it was missing the sump gasket. I had to wait an additional 2 weeks to get a gasket from Norton. WTF! Is this gasket made of unobtainium? Does it require special tooling to make? It is weird that this gasket is "special". It's just a Fu**ing gasket! Seems that this is just another quirk in Nortons sometimes bizarre business polices.

RTV may be a safe substitute, if you carefully clean all surfaces, and don't apply too much, but I would rather use an actual gasket.
 
BritTwit said:
I could never understand why the sump gasket was sooooo hard to source by Norton. When my dealer got the oil-in-airbox kit, it was missing the sump gasket. I had to wait an additional 2 weeks to get a gasket from Norton. WTF! Is this gasket made of unobtainium? Does it require special tooling to make? It is weird that this gasket is "special". It's just a Fu**ing gasket! Seems that this is just another quirk in Nortons sometimes bizarre business polices.

RTV may be a safe substitute, if you carefully clean all surfaces, and don't apply too much, but I would rather use an actual gasket.
Click to expand...
Don't feel bad, Fred. I waited 4 months for a starter gasket, 4 more months for a detent spring that did nothing, 7 more months for a tranny, four months for a starter.
 
We all know now why though, SG & Co were more than likely overdue paying the supplier's bill hence the supply issues.

Now I have mad gasket making skillz I can take orders, I am thinking of making 1 a week to keep with more recent Norton traditions and I may or may not supply the goods but your all used to that so no biggy :p
 
Bluey72e said:
Stupid Question.. but want to be sure, Im putting the 670ml back in the tank before my test run right ?
Click to expand...
Only if you need oil to stay in the safe range on the stick. Start let idle a minute or two shut off then check.
 
OK , Here is the amount of oil in my sump after my 281 mile ride last week . I did not ride or start the bike for 7 days
450 ml :

Unraveling the 961 part two (oil in the air box)


This is the amount of oil on my stick before I drained my sump . It matches what I had 7 days ago when I checked it after my ride :

Unraveling the 961 part two (oil in the air box)
 
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Hi;

Ok so added 250ml as there was literally nothing on the stick and wasn't comfortable riding like that.

Went for 45 mins run and 10 mins was a constant 4krpm on highway.

literally 2ml on bottom of stick now but no oil in airbox at all.

Cant really judge if that seeping down if there's nothing on the stick to start with to measure from.

All I can say is that there is approx 2 litres in there as there was a measured 2.5L to start with.

Ollie has instructed me to drain everything, fill with 1.8L and then add up to 2.2(max)


From your results Id say yours is nye on perfect or at least normal for a 961
 
Im going to start her up shortly, run for 2 mins, sit for 1 min and check level, thats by the manual's reckoning how to check the oil level.

Will report back on that also
 
On my 2013 bike, I always checked the oil while the bike was running as it seemed to wet sump so fast. On the old type dipstick, I used the low mark as the level which was approx 12.7mm from the top. The new dipstick has the low level at approx 13.7mm from the top. It was a pre Nikasil bore bike and used oil at the rate of 1 litre per 1200 miles so I was always topping it up. In those early days, people were checking the oil after a couple of minutes turning off - seeing no oil on the stick, they added more which was then blown out into the airbox.
 
Guilty of that until I had read a heap of the threads on the matter here.

The manual says 3 Litres from dry with oil filter change otherwise I think 2.5 Litres. I had 2.5L in mine now more like 2.2L, so now reducing until I hear metal screeching or the oil stops leaking out the airbox..... ;)

Ollie at Thiel has told me drain it, add 1.8 run it up for a bit then add up to 2.2l but no more.
 
Bluey72e said:
Im going to start her up shortly, run for 2 mins, sit for 1 min and check level, thats by the manual's reckoning how to check the oil level.

Will report back on that also
Click to expand...

Ok run for 3 mins, 1 min wait, there is 10mm on the very bottom of the stick
 
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Guess you mean 10mm Bluey? Really hope that you manage to sort this mate.

On a side note the oil check procedure has always been a little ‘hit and miss‘ to my mind, with irregular outcomes. I carry out the standard check and it shows oil toward the top of the knurled section, ‘top‘ being toward the head of the stick. If I check the oil after a ride as I switch off the ignition (+ 1 min wait time) the oil level is always 5+ mm higher up the stick, above the top of the knurled section. Effectively slightly overfilled. I guess this is why I am still getting a little oil (3-4 mm) in the catch bottle after each ride.
 
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