Stock 2023 V4R front master cylinder

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baggerman said:
It matters because the heads are actively scavenged by a stage in the oil pump. When you shut the motor down the heads are draining thru the clearances (not much) in the scavenge stage. Takes awhile to get the heads to drain so you really can't change the oil hot. So a couple of hours after it's shut off to be safe. Underfill it, fire it off to fill the oil filter let it sit overnight and adjust the level.
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That’s got nothing to do with using weight to put back in what you’ve taken out. You’re talking about making sure it has plenty of time to drain. I get that and I understand why. This method being faster was not related to allowing less time to drain - it was about not needing to adjust levels after filling.

What exactly is wrong with putting back in exactly what you took out?
 
spooky said:
Still weighing it up.

See what I did there… 🤪

I had asked another person who preps bikes for race teams and for private clients and he came back saying definitely 19x18 if he was building a bike for himself for track days… 🤷‍♂️ I reckon 80% of the people I have asked have said the same thing.
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just leaves a couple of sex workers in Prague to ask and that’s everyone!👍
 
andyb said:
just leaves a couple of ... workers in Prague to ask and that’s everyone!👍
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I did ask them - apparently they don’t see what difference 3mm is going to make. 🤷‍♂️ I tried to explain that it was all about the firmness and length of stroke but I don’t think they really cared.
 
baggerman said:
One thing for sure you don't want to overfill these. The main scavenge section is on the downside of a screen that used to scrape oil off the counterweights. Really close. If you overfill them they'll froth the oil and bye bye rod bearings.
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I know about not over-filling from air-cooled Porsche. I always keep the oil where it should be, with coolant near the lower mark.
 
SuperDomestique said:
Keep weighing your oil… Speaking of, what’s the typical weight of the oil you recover since you prefer this method? I’m sure you’ve written it down somewhere.
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I will.

You’ve yet to say why it’s wrong, other than to say that weighing is not a good way to measure oil, which is incorrect.

Why would I keep a record and why would you need to know? The point is to replace what’s taken out, so I weigh what comes out and put the same back in… I’m not sure I can make it any simpler for you.

In your defence, it’s not the dumbest comment you’ve made in this thread.
 
I really don't understand why you make so difficult an oil change. Even ducati says that the oil you will need after an oil change wil be approximately 3 liters and you don't have to worry about what is left inside.
 
Chriss said:
I really don't understand why you make so difficult an oil change. Even ducati says that the oil you will need after an oil change wil be approximately 3 liters and you don't have to worry about what is left inside.
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How exactly have I made it difficult? Instead of ‘approximately’ I take a moment to weigh it and put exactly the same back in - I don’t need ‘approximate’ but have it correct first time and I don’t need to top up, etc. It takes me no more time to do it than the usual method and probably less time, yet somehow you conclude that I’ve made it ‘so difficult’.

I can’t believe people are losing their minds over something so simple and so unimportant… :rolleyes:🤣
 

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