No, between the crankcase and oil tank tube in the filler neck - not the oil tank vent.is the reed valve some have recommended installed in the vent line between the oil tank and breather?
That's one way if the reed valve is a type with inlet at bottom and outlet at top, others take over the place of the original breather at the back of the crankcase.is the reed valve some have recommended installed in the vent line between the oil tank and breather?
Thanks, I was wondering iI I would need to replace the stock breather on the crankcase. I've built a few BMW air heads and they have a reed type crankcase vent.That's one way if the reed valve is a type with inlet at bottom and outlet at top, others take over the place of the original breather at the back of the crankcase.
You don't need to replace, a Yamaha 125 EGR valve will fit in the line and it is a reed valve.Thanks, I was wondering iI I would need to replace the stock breather on the crankcase. I've built a few BMW air heads and they have a reed type crankcase vent.
Thanks, I may look into that, if re-routing the oil vent fails.You don't need to replace, a Yamaha 125 EGR valve will fit in the line and it is a reed valve.
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You just need the alloy bit.
Line length is not an issue. You are way overthinking it.I think the vent line in Lioneslingers photos is too short to buffer the pressure pulses. Many Velocettes use a line from engine to oil tank and a line along the fender as you suggest. It is well known that the length of the lines is rather critical to tuning the vent system to work properly. I surmise that changing the length of the line may improve the amount of mist experienced. That said, I use a xs650 reed valve between the tank and engine vent.
Best to all.
Good to know. Didn't know about this option.Thanks, I may look into that, if re-routing the oil vent fails.
Velo's recommendation re the length of line, as I understand it, was to tune the system so oil vapor was not blown. No reed valve or PCV was used by them and no filter on the line.Line length is not an issue. You are way overthinking it.
It is simply another step is alleviating any potential pressure buildup in the oil tank and crankcase.
I only posted a couple of reference photos, thus you are passing judgement on one pixel of a much bigger picture. If you are misting oil on the rear of your frame/fender/back tire I suggest that is a problem. There should not be any oil exiting the system that far from the tank outlet/port.
I run my oil level on the low mark of the stick and don't have any overflow or misting issues. The oil pulses you refer to are not exactly blasting into the tank. I rebuilt the oil pump during restoration and it is functioning as it should.
The total configuration of all crankcase vent and circulation lines plumbed together properly has performed without issue since I installed them 6 years ago.
Yes.Greetings,
I have a 72 Interstate.
Currently I have the oil tank vented with an 8" length of tube to a small filter behind the battery box, it's gets kinda messy back there.
I'm a triumph guy, and I route the crankcase/oil tank vents on my triumphs under the rear fender to the back of the bike.
Has anyone done that with the Norton oil tank vent?
Thanks for all replies.
Phil