08-30-2016, 09:05 PM | #16 | |
Join Date: Oct 2015
Location: FL, GA, NC
Posts: 771
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Quote:
Jay, don't tempt me.....I was dumb enough to do the ballon trick... jb
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2016 Honda CB500F......2017 Triumph Street Twin 2014 XT 250........ |
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08-31-2016, 12:36 PM | #17 |
Join Date: Mar 2010
Location: Volcano, Ca
Posts: 7,112
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When I put in new oil, it whips it up and fills it with bubbles.
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"Light a fire for a man, and you heat him for a day. Light a man on fire, and you heat him for the rest of his life." 2007 Suzuki DRZ400S (SM convert) 2009 Q Link XP 200 1967 BSA B25 250cc Starfire 2022 Royal Enfield Interceptor 650 2023 Royal Enfield Scram 411 1948 Royal Enfield Model G 350 |
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08-31-2016, 01:03 PM | #18 |
Join Date: Oct 2015
Location: Berthoud, CO
Posts: 205
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When the plug on my drain hose was leaking it made an oily mess on everything behind it (as when traveling down the road) which then collected a lot of dirt.
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Dan CSC RX3 Cyclone, CSC TT250, Moto Guzzi V7 II, KLR650 |
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09-06-2016, 04:26 AM | #19 |
Join Date: Feb 2016
Location: Germany, Bavaria
Posts: 6
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While watching some videos I found another interesting variant. Unfortunately I don't understand a word but at second 23:09 an option is shown how to make use of the otherwise useless liquid in the drain tube. I am not sure it is very clever since the liquid is containing fuel but anyhow have a look your self.
By the way i am eagerly looking forward for the results of all the different upgrades with respect to oil quality. Thanks for making all the efforts especially in documenting everything.
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__________________ Fritz 2016 ROMET ADV 250 AKA Zongshen RX3 |
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09-06-2016, 11:11 AM | #20 |
Join Date: Oct 2015
Location: FL, GA, NC
Posts: 771
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Very interesting setup, fritz.
It looks like the man in the video is using the crankcase by products to lubricate the chain. jb
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2016 Honda CB500F......2017 Triumph Street Twin 2014 XT 250........ |
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09-06-2016, 02:01 PM | #21 |
Join Date: Mar 2010
Location: Volcano, Ca
Posts: 7,112
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Old Harley trick. My 74 Ironhead came that way. It had a metal vent line coming from the crankcase that had a valve on the end you could open and close that sat right over the chain that would mist it....and people think HD is behind the times. ;-)
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"Light a fire for a man, and you heat him for a day. Light a man on fire, and you heat him for the rest of his life." 2007 Suzuki DRZ400S (SM convert) 2009 Q Link XP 200 1967 BSA B25 250cc Starfire 2022 Royal Enfield Interceptor 650 2023 Royal Enfield Scram 411 1948 Royal Enfield Model G 350 |
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09-06-2016, 07:35 PM | #23 |
Join Date: Oct 2015
Location: FL, GA, NC
Posts: 771
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Oil Analysis is complete,
And the results are surprising to me. 1% fuel in the oil. This is with the crankcase vent hose running directly to the airbox. No other changes to the bike were made. The roads ridden, and the riding style were the same as the previous analysis. Here are the comments from Blackstone: JB: It's great to see fuel lower this time. There's still a little fuel in the oil, but 1.0% is not problematic as you can get this small of an amount simply from normal use. Potassium and sodium dropped this time, so coolant contamination is no longer a concern. The viscosity is still on the thin side for 20W/50, but with less fuel in the oil, it's closer to the should be range than past samples. Air and oil filtration still look good and wear metals are nice and low once again. They are holding pretty steady overall too and that's good. Better overall since fuel is lower. I realize that one test doesn't prove anything unless it's repeated multiple times with the same results. But it puts my mind at ease. However, I've been doing some additional research, and it turns out that routing the crankcase gases directly to the airbox is not really a good thing. An article in the Sept 2016 issue of Motorcycle Consumer News (p46) on "blow-by gases" going back into the engine intake states: "the engine ...is inhaling a mixture of ambient air combined with water, burned and unburned fuel, combustion gases, ash and atomized engine oil that together readily form thick carbon deposits on the intake tract walls, and on the backsides of the intake valves.... ......the consequences of this buildup: reduced airflow due to rough, narrowed passages caused by crusty surface.... ...these oily gases add to the carbon buildup on the piston crowns and combustion chamber walls..." And quite by accident I was watching the Motorweek TV show when this was mentioned: http://www.motorweek.org/features/go...-oil-separator It looks like routing the crankcase gases back to the engine intake (PCV valve) is a good thing for emissions, but not so good for the engine. I think I will complete my second test with no crankcase gases going to the airbox. Then install a new air/oil separator from CSC (already ordered), and try one last analysis. .....That is if I can accumulate the miles here in North Carolina before the riding season ends for me. The RX3 will stay in NC when I return to FL. jb
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2016 Honda CB500F......2017 Triumph Street Twin 2014 XT 250........ |
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09-06-2016, 09:21 PM | #24 |
Join Date: Sep 2014
Location: Arvada, CO
Posts: 1,004
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Thanks for posting your Blackstone results, JB!
It's great to see less fuel in the oil ... didn't you have 4% before? I was a little worried that fuel would still condense in the airbox line and drip back into the crankcase. Obviously that's not happening, but like you said, a trend is more indicative than an individual test.
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Red 5 standing by! 2015 CSC red RX3 with 19" front wheel, Shinko 804/805, skid plate, tall seat, 13T/45T sprockets, progressive shock, Winyoochanok windshield, GENSSI LED headlight, SW-Motech tankbag, Shorai Lithium battery 2014 Ural Patrol |
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09-06-2016, 09:50 PM | #25 | |
Join Date: Oct 2015
Location: FL, GA, NC
Posts: 771
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Quote:
Here are the fuel/oil percentages of the 4 oil analyses: The first 3 with the stock air/oil separator in place. The last with the OCS removed, and crankcase vented directly to the airbox. 1st.....1% 2nd.... 5.5% 3rd......3.8% 4th.......1% jb
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2016 Honda CB500F......2017 Triumph Street Twin 2014 XT 250........ |
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09-06-2016, 09:57 PM | #26 | |
Join Date: Oct 2015
Location: FL, GA, NC
Posts: 771
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Quote:
But it drained into the air box drain tube, not back into the crankcase. jb
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2016 Honda CB500F......2017 Triumph Street Twin 2014 XT 250........ |
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09-06-2016, 11:25 PM | #27 |
Join Date: Apr 2016
Location: South Mississippi
Posts: 253
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Interesting findings. I agree, I don't want that sludgy air/oil/fuel going into my intake. I'm also interested in the findings of those very few that are running stock OCS with a higher temp Tstat. Maybe it's better to vent it to the outside world, with a check valve so nothing gets sucked in, as I am given to understand there is a slight negative pressure (vacuum) on the crankcase vent tube.
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09-06-2016, 11:50 PM | #28 | |
Join Date: Jul 2015
Location: Milpitas, CA. USA
Posts: 775
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Quote:
On a car engine with multiple cylinders and a PCV valve, there is always one piston rising as another is descending, balancing each other out. On a single it's a serious case of inhale-exhale. That's why an open (but filtered) vent is preferable. |
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09-06-2016, 11:54 PM | #29 | |
Join Date: Jul 2015
Location: Milpitas, CA. USA
Posts: 775
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Quote:
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09-07-2016, 12:46 AM | #30 |
Join Date: Sep 2014
Location: Arvada, CO
Posts: 1,004
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Actually, that's good. That tiny amount of oily residue is about what I would expect from blowby, and it's getting caught in the airbox catch tube. The fuel vapor is getting burned the way it's supposed to, instead of condensing and draining back into the catch tube or the crankcase.
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Red 5 standing by! 2015 CSC red RX3 with 19" front wheel, Shinko 804/805, skid plate, tall seat, 13T/45T sprockets, progressive shock, Winyoochanok windshield, GENSSI LED headlight, SW-Motech tankbag, Shorai Lithium battery 2014 Ural Patrol |
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