Rob Jameison , If you could answer this please
Have there been any upgrades or changes to the oil pump over the last 5 years for the 961 ???
Any differences between the standard and mk11 models ?
Cheers
Paul
Yes, the pump is different. Scavenge ratio is the same, but the tolerances in the pump are tighter and the scavenge gearotor is slightly different. Cosmetically looks very similar.Rob Jameison , If you could answer this please
Have there been any upgrades or changes to the oil pump over the last 5 years for the 961 ???
Any differences between the standard and mk11 models ?
Cheers
Paul
Hello Clive , Are you saying that you have had the newer oil pump installed recently ? Where did the oil come from that was sprayed over the back of the bike ? The air box drain ?At my last service Rob told me I have a new type scavenge pump and he was talking about drive ratios - this is related to a problem where an unusually fast and sustained high speed (emergency) blast up the motorway caused a load of oil to be liberally sprayed over the back end of the bike. Usually my oil consumption is trouble free.
Thanks for the reply rob ,Yes, the pump is different. Scavenge ratio is the same, but the tolerances in the pump are tighter and the scavenge gearotor is slightly different. Cosmetically looks very similar.
Hello Clive , Are you saying that you have had the newer oil pump installed recently ? Where did the oil come from that was sprayed over the back of the bike ? The air box drain ?
Rob,We just changed supplier and they are able to build the pumps to a higher quality - no other reason.
No - my late 2017 bike came fitted with it. The oil seemed to come from the pipe which normally empties into the catch bottle but had popped off.
That pipe drains from the airbox to the catch bottle , so is your bike getting oil in the airbox?
Rob,
Is the one way valve now built into the pump, or still pressed-in?
As you know my catch bottle overflowed at end of last year, bang on the 2k mile predicted by Olivia. This was after a sustained high speed motorway thrash and it left me with a worrying niggle all Winter whilst the bike was off the road. Yesterday I had a good 160 mile round trip to Donington for my service with varied styles of riding including a high speed burst for 5 mins or so and I have the tiniest amount of oil in my bottle. I don't know if this is the residue after emptying it myself before the run or if it is new after the service, I forgot to ask Ash at Norton if he emptied it.Guess so. I use the bike to get to work and often take a half hour motorway route and rarely see anything in the catch bottle so I don't think there is anything fundamentally wrong during 'normal' use. Maybe I'll try to persuade the wife that I need to go blasting up the German autobahns in the interest of science?