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The Sportster and Buell Motorcycle Forum - The XLFORUM® (http://xlforum.net/forums/index.php)
-   Sportster Motorcycle - Bottom End (http://xlforum.net/forums/forumdisplay.php?f=205)
-   -   Sportster Crankcase Pressure / Engine Breathing / Wetsumping and Mods (http://xlforum.net/forums/showthread.php?t=2073932)

rocketmangb 9th August 2019 22:29
Scavenge
 
Quote:
Originally Posted by 60Gunner (Post 5768850)
It been our understanding the stock breather bolts with the small, restrictive hole on the head end was done so to increase pressure to aid in scavenging.
So
On a dyno test,2 sets of breather bolts on hand for a back to back and see what difference if any ?
I might attempt that next time I test !

dieselvette 9th August 2019 23:46
Quote:
Originally Posted by rocketmangb (Post 5768853)
So
On a dyno test,2 sets of breather bolts on hand for a back to back and see what difference if any ?
I might attempt that next time I test !
It is my belief that Aaron has already beat that horse to death - at least twice.

rocketmangb 9th August 2019 23:51
Possibly !!!

shanneba 9th August 2019 23:55
Has anyone tried the XR "Oil Deflector plate" in an XL case?
Looks like it may be similar to a windage tray or oil scraper.

In the service manual:
XR 1200X: Remove three screws (6) and oil deflector plate

#17 in this link:
http://partsfinder.onlinemicrofiche....ASE%20ASSEMBLY

rocketmangb 10th August 2019 00:06
Maybe a crank scraper ?

60Gunner 10th August 2019 01:09
Quote:
Originally Posted by rocketmangb (Post 5768853)
So
On a dyno test,2 sets of breather bolts on hand for a back to back and see what difference if any ?
I might attempt that next time I test !
speaking of a Dyno

Toejam503 10th August 2019 01:32
Quote:
Originally Posted by Hippysmack (Post 5768803)
Why does oil 'drip' from the vent?
Matter of fact, why does oil 'drip' from ALL Sportsters whether out the vent or in the A/C?
Just oil mist collecting itself in one spot.

60Gunner 10th August 2019 02:17
Before and after krankvent.

https://live.staticflickr.com/65535/...49ed7d08_b.jpg

dieselvette 10th August 2019 02:34
Quote:
Originally Posted by 60Gunner (Post 5768891)
Thanks for posting! Always nice to find another 5hp for cheap just by fixing the breathers.

dieselvette 10th August 2019 02:38
Quote:
Originally Posted by Toejam503 (Post 5768894)
Just oil mist collecting itself in one spot.
Right, but mine never dripped, ever. Zero oil ever came out my breathers, as shown with pictures in previous posts. But some do drip, which I would consider unacceptable but sometimes the cure is worse than the disease.


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