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Post by katt on Jul 22, 2018 16:16:29 GMT -5
If someone is environmentally responsible wants to try, i have come to idea of using oil separator for crankcase vent it did work fine however it was getting oil built inside it and probably would have needed draining over time and i don't want to keep remembering to do it and also airflow probably worse, but concept works.
Now oil separators for cars on come with $50+ price tag, IMO its nonsense to pay that much. I found oil separator for compressor tool in harbor freight for $6 and then went to home depot and bout compressor attachments female and male thread with compressor quick connect at the end to connect hose.
Here's my current solution.
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PirateLabs
Scoot Enthusiast
Posts: 296
Location: Bowling Green, KY
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Post by PirateLabs on Jul 22, 2018 17:03:29 GMT -5
I just use a fuel filter as someone here suggested when I first started coming to this site 3 years ago. I never get anything coming up out of that line anyway and, since I have been working on my scoot all weekend, I just checked that filter and it looks brand new. I know some places sell catch cans and all sorts of expensive stuff to use here but, I just don't see the need as I use clear fuel line and that filter I mentioned and even that transparent line is clean inside. Are others really getting that much blow-by that they need something like this? My scoot is the only one like this I have owned so I can not speak for others types of scoots.
Bill
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Post by katt on Jul 22, 2018 17:32:58 GMT -5
Mine blows pretty strong trough that hose and oil keep coming out somewhat, but my engine is old.
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PirateLabs
Scoot Enthusiast
Posts: 296
Location: Bowling Green, KY
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Post by PirateLabs on Jul 22, 2018 17:35:39 GMT -5
I have read similar results from folks using them and my scoot has almost 6,000 miles on it and, maybe I am just very lucky to to not have that issue...yet? I have had many other issues lately so, that one would not surprise me if it happens.
Bill
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Post by FrankenMech on Jul 22, 2018 23:32:50 GMT -5
The fuel filter works fine up to a point, but when blowby gets excessive a more robust solution is sometimes needed to prolong the time before an engine overhaul.
A cheap solution is to use a honey jar, mustard jar, glue bottle, etc. Anything with a tube-type spout. Drill some holes in the bottom of the jar and stuff some copper or nylon scrub pad in it. Mount it upside down on the frame and connect the spout to the vent with tubing for a gravity drain. The scrub pad will catch the oil mist and condense it so the oil can drain back into the sump.
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Post by 190mech on Jul 23, 2018 3:55:14 GMT -5
Dont know if anyone has tried an evacuation system,its an angled tube welded in the exhaust with a check valve attached,creates a suction in the system and the residual oil is burned..Heck,some parts of a PAIR system may work... www.summitracing.com/parts/stf-66115/overview/ |
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Post by katt on Jul 23, 2018 15:32:24 GMT -5
From what i understand more your piston rings and/or valves are getting worn out worse compression you get because when it compress a lot of gasses escapes in the oil and more air has to come out of the crankcase trough vent, also this blow by gasss from combustion chamber are messing up your oil chemistry so you got to change oil more frequently, easy to check my measuring compression. Dont know if anyone has tried an evacuation system,its an angled tube welded in the exhaust with a check valve attached, creates a suction in the system and the residual oil is burned..Heck,some parts of a PAIR system may work... www.summitracing.com/parts/stf-66115/overview/Suction might suck even more oil out than needed or create negative pressure in the crankcase and IMO its pointless waste of $$$ all extra pressure can escape trough the vent on its own no need to suck it out. Only advantage is that oil separator, but even though i get a lot of blow i don't get that much oil running out trough the vent, most i lose trough crankcase gasket that was leaking. |
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Post by AtariGuy on Jul 24, 2018 2:30:06 GMT -5
I recently crossed this bridge myself. Yes, if you are getting a lot of blow-through, you need to correct it. As far as catch cans, tapping a return line hose shouldnt be too difficult. It'll recycle the oil that would normally be lost elsehow. I do like 190mech's suggestion. I don't foresee a good running engine losing measurable amounts of oil through the exhaust discharge method, and the few millibar vacuum the exhaust would make just affects internal case pressure - still evacuating positive (above) atmospheric pressure and keeping seals from blowing out. Plus no scummy oil in the airbox/carb. For those with a pair/egr head, that'd be a great point to run the pcv to. Now to find a high temp checkvalve and a good line... |
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