I've been told that a Yamaha pn. 6R3-13183-10-00 - VALVE, CHECK is a good alternate when making your own oil lines.
Have not tried them, but will someday.
These are used on Yamaha outboards & Waverunners.
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| Possible in line check valve solution http://www.kawi2strokes.com/forum/viewtopic.php?f=16&t=9861 |
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| Author: | Jim C [ Sun Jan 25, 2015 2:01 pm ] |
| Post subject: | Possible in line check valve solution |
No specs but perhaps an item that would work. They come in different sizes too. http://www.ebay.com/itm/2x-8mm-5-16-ALU ... 541085f9a2 OTOH, I just bought some supposedly certified crimp connectors from this vendor that are junk… |
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| Author: | Walms [ Sun Jan 25, 2015 3:47 pm ] |
| Post subject: | Re: Possible in line check valve solution |
If they could be adjusted to crack off at 4 psi, I don't see why not. Cheap enough for the experiment. |
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| Author: | Jim C [ Sun Jan 25, 2015 3:53 pm ] |
| Post subject: | Re: Possible in line check valve solution |
What if they cracked at 4psi or less, but still kept the oil from seeping by? I know mother Kaw designed them for 4 but what pressure does the pump actually put out for the max volume we would need? |
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| Author: | Jim [ Sun Jan 25, 2015 5:01 pm ] |
| Post subject: | Re: Possible in line check valve solution |
The pump's output is not related to the output pressure, since it's a positive displacement pump. I believe the 4 psi is to keep vacuum in the crankcase chambers from sucking on the oil lines and possibly causing over oiling or air in the lines. |
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| Author: | m in sc [ Tue Jan 27, 2015 6:30 pm ] |
| Post subject: | Re: Possible in line check valve solution |
5/16? pretty damn big. you can get checkvalves to work.. just have to look around. low cracking pressure is not an issue, down as low as 2 is ok. you will need much smaller valves though, maybe max 1/8" |
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| Author: | Walms [ Tue Jan 27, 2015 6:37 pm ] |
| Post subject: | Re: Possible in line check valve solution |
Fwiw I used much less oil with 4 psi cracking pressure. My bike smoked less with dyno than it did previously with synthetic. Mind you, I repaired the checks at the same time, so maybe it's all with that but I suspect weak springs will allow the oil to be drawn in easier as well. |
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| Author: | Jim [ Tue Jan 27, 2015 6:59 pm ] |
| Post subject: | Re: Possible in line check valve solution |
I know in at least some cases, sucking on the pump will cause oil to flow through it beyond the metered amount, so it would seem that the valves need to have a high enough cracking pressure to prevent that. What that number really is, I can only guess. |
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| Author: | 500estu [ Tue Jan 27, 2015 10:05 pm ] |
| Post subject: | Re: Possible in line check valve solution |
I've been told that a Yamaha pn. 6R3-13183-10-00 - VALVE, CHECK is a good alternate when making your own oil lines. Have not tried them, but will someday. These are used on Yamaha outboards & Waverunners. |
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| Author: | MadKaw [ Fri Jan 30, 2015 12:38 am ] |
| Post subject: | Re: Possible in line check valve solution |
what about these? genuine Kawasaki parts |
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