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Keep & Kill
Last Post: fafcpa
Posted On: 17 Minutes Ago
Replies: 21,311
Views: 1,259,017
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View Poll Results: Does your Rubbermount use too much oil (more than 1 QT. per 1,000 miles)
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04- NO
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202 |
20.89% |
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04- YES
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42 |
4.34% |
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05- NO
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226 |
23.37% |
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05- YES
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42 |
4.34% |
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06- NO
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222 |
22.96% |
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06- YES
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23 |
2.38% |
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07- NO
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91 |
9.41% |
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07- YES
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7 |
0.72% |
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08- NO
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57 |
5.89% |
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08- YES
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7 |
0.72% |
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09- NO
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12 |
1.24% |
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09- YES
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0 |
0% |
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10- NO
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10 |
1.03% |
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10- YES
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0 |
0% |
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11- NO
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2 |
0.21% |
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11- YES
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1 |
0.10% |
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12- NO
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11 |
1.14% |
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12- YES
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0 |
0% |
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13- NO
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3 |
0.31% |
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13- YES
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1 |
0.10% |
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14- NO
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8 |
0.83% |
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14- YES
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0 |
0% |
9th September 2020
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XL FORUM TEAM MEMBER
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Join Date: Jul 2014
Posts: 7,035 Sportster/Buell Model: Xl1250S Sportster/Buell Year: 98 Other Motorcycle Model: Kawasaki Vulcan 500 Other Motorcycle Year: 95
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Quote:
Originally Posted by glbsportster
I have yet to hear about a pump that can put out more oil than it takes in
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Please read this link in the Sportsterpedia. It explains what you are asking:
Wet Sumping
If you are not dripping oil, that's great.
But it isn't because of an EBS (don't know where that term came from).
It's because your crankcase pressure is stabilized.
You can remove your EBS and revert to new OEM parts and you won't leak.
You can keep the EBS and remove the breather valve(s) and your EBS will now leak.
Quote:
Originally Posted by boomerguy
This information came from the S&S Cycles website and U-tube videos. Check them out.
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86-up factory Sportster engines all feed oil from the pump to the filter into the engine to the pump and back to the tank.
S&S engines are different animals of the same mother.
They have their own design based off earlier Sportster engines. |
9th September 2020
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XL FORUM TEAM MEMBER
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Join Date: May 2018
Location: Rural area in SW Virginia
Posts: 1,087 Sportster/Buell Model: XL883 Standard Sportster/Buell Year: 2005
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Quote:
Originally Posted by Hippysmack
86-up factory Sportster engines all feed oil from the pump to the filter into the engine to the pump and back to the tank.
S&S engines are different animals of the same mother.
They have their own design based off earlier Sportster engines.
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I still learn something new from this forum every day. This is good info and obviously, I ASSUMED that the S&S engines were based on current EVO engines. Thanks for the correction and update.
Now, my next question since we're on the subject of oil filter vs oil pump location, does it matter if the oil filter on the rubbermount Sportsters has an anti-drainback valve? |
9th September 2020
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XL FORUM TEAM MEMBER
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Join Date: Jul 2014
Posts: 7,035 Sportster/Buell Model: Xl1250S Sportster/Buell Year: 98 Other Motorcycle Model: Kawasaki Vulcan 500 Other Motorcycle Year: 95
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No, there is no need.
But thank you. I need to add this to the pedia.
The oil tank sits higher than the oil filter housing.
So if any oil did drain back. Where could it drain to?
We all know Sportsters have a problem with oil gravity draining into the engine when the engine is shut off and it sits for a while.
This is due to either a worn check valve or worn clearances in the oil pump.
So, oil will be pushed against the filter at all times without a drainback valve in the filter.
No need for the drainback valve.
edit:
I massaged my post into the anti-drainback portion of this page in the pedia.
http://sportsterpedia.com/doku.php/t...rainback_valve
Thanks again. 
Last edited by Hippysmack; 9th September 2020 at 03:57..
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Reference the XLFORUM'S Sportsterpedia
