The Sportster and Buell Motorcycle Forum - The XLFORUM®
 

Go Back   The Sportster and Buell Motorcycle Forum - The XLFORUM® > SPORTSTER MOTORCYCLE FORUM > Sportster Motorcycle Era Specific and Model Specific > Frame Mount EVO Sportster Talk (1986-2003 models)
XLF Blogs XLF Arcade XLF Disclaimer/Privacy Statement/Terms Of Use

Notices

Active Threads
0 Wanted
Last Post: maltesefalcon
Posted On: 3 Minutes Ago
Replies: 3
Views: 71
0 Sportster fans, tell us why!
Last Post: 1200CustomHD
Posted On: 7 Minutes Ago
Replies: 674
Views: 181,350
0 What did you do for your sporty Today?
Last Post: boomerguy
Posted On: 7 Minutes Ago
Replies: 7,152
Views: 1,040,703
0 Any Banjo-Playing Sporty Riders here?
Last Post: Crusty
Posted On: 28 Minutes Ago
Replies: 34
Views: 1,659
0 Hello from Home of HD
Last Post: Toejam503
Posted On: 37 Minutes Ago
Replies: 8
Views: 73
0 Hurricanes
Last Post: Toejam503
Posted On: 43 Minutes Ago
Replies: 1
Views: 57
0 Iree's late night cafe
Last Post: rokytnji
Posted On: 50 Minutes Ago
Replies: 1,707
Views: 234,651
0 2013 48 what would you update first?
Last Post: Clevspeed
Posted On: 54 Minutes Ago
Replies: 2
Views: 35
0 Post your paint questions here!!!!!
Last Post: Whitewalls
Posted On: 1 Hour Ago
Replies: 313
Views: 73,751
0 What Marker Lights Are These?
Last Post: seajay
Posted On: 1 Hour Ago
Replies: 6
Views: 240
0 99 1200S Sport Ignition Troubleshooting
Last Post: sportsterdoc
Posted On: 1 Hour Ago
Replies: 22
Views: 322
4 What is the max drilling size in the frame?
Last Post: sportsterdoc
Posted On: 1 Hour Ago
Replies: 6
Views: 187
0 KR style bolt on hard tail for 78 XLCH
Last Post: DirtyHarry68
Posted On: 1 Hour Ago
Replies: 5
Views: 159
0 79-85 Breather Vent Mod - Adding a Secondary Vent Hose at 6:00 Position
Last Post: Hippysmack
Posted On: 2 Hours Ago
Replies: 18
Views: 671
0 Show your favorite pic of your bike. just one
Last Post: 1200CustomHD
Posted On: 3 Hours Ago
Replies: 4,793
Views: 1,878,123
12 Lets see the "C's" XLC's that is. Pics Please!
Last Post: Diogenes415
Posted On: 4 Hours Ago
Replies: 1,239
Views: 470,875
0 PLEASE READ THIS Before You Post In 'The BUY - SELL - TRADE Zone'!
Last Post: Folkie
Posted On: 4 Hours Ago
Replies: 1
Views: 123
0 Race Reort: Some Disasters, Some Wins
Last Post: Iron Mike
Posted On: 4 Hours Ago
Replies: 24
Views: 711
0 13" Harley Take Off Air Shocks - $90
Last Post: mrbreezeet1
Posted On: 5 Hours Ago
Replies: 0
Views: 44
0 Progressive Suspension 412-4055C Chrome, 13" Heavy Duty springs, Rear
Last Post: mrbreezeet1
Posted On: 5 Hours Ago
Replies: 0
Views: 74
0 RIDE REPORT During Covid, 13 States & Some Spectacular Riding
Last Post: DK Custom
Posted On: 5 Hours Ago
Replies: 0
Views: 31
0 Carb fastening screw size?
Last Post: Snowplow
Posted On: 6 Hours Ago
Replies: 5
Views: 158
0 Ideal RPM
Last Post: kitabel
Posted On: 6 Hours Ago
Replies: 51
Views: 1,950
0 Which Battery?
Last Post: Hellbent_4
Posted On: 6 Hours Ago
Replies: 68
Views: 20,853
0 Sportster 1200S piggyback rear shocks for sale
Last Post: vferdman
Posted On: 7 Hours Ago
Replies: 0
Views: 59
6 ironhead turn signals
Last Post: BigMek
Posted On: 7 Hours Ago
Replies: 7
Views: 204
0 Swapping out single speedo for 1200 dual gauge setup
Last Post: beau-kat
Posted On: 7 Hours Ago
Replies: 4
Views: 99
0 Cobra NH slipons
Last Post: guncrank
Posted On: 7 Hours Ago
Replies: 6
Views: 126
0 Rubber Mount Seat for sale
Last Post: vferdman
Posted On: 7 Hours Ago
Replies: 0
Views: 91
0 Hottie of the day, no nudity.
Last Post: Stairman
Posted On: 8 Hours Ago
Replies: 22,098
Views: 2,262,888
More...
Members Birthdays
DaddyJay, sixshooter (73), cartoad2001 (71), Dirty Ernie (65), ncpickman (59), bri1200c (57), pquirk (54), GOTWA (51), gremlinsteve (51), lbowles2 (49), Guess (41), rnaway22es, landon283 (32)
Tags
bretaher, head, leak, oil

Reply
 
Share Thread Tools Display Modes
  #1  
Old 3rd July 2018
davy davy is offline
Biker
 
Join Date: Sep 2017
Posts: 3
Sportster/Buell Model: Sportster XL1200 CUSTOM
Sportster/Buell Year: 98
Reputation: 10
davy is an unknown quantity at this point
Default Head breather and Oil leak

Hi,

I bought the SS Teardrop air cleaner for my 98 sportser xl1200. The bike is running great with it. However, I noticed the head and base gasket started leaking.

Could it be possible that head breather assembly (banjo and rubber) is more restrictive than stock and causing that problem ?

Time to change all those gaskets... ?
The bike as 70 000km.

Thanks so much
Reply With Quote
  #2  
Old 4th July 2018
JacksBrother's Avatar
JacksBrother JacksBrother is offline
XL FORUM TEAM MEMBER
 
Join Date: May 2010
Posts: 420
Sportster/Buell Model: XL1200
Sportster/Buell Year: 1998
Other Motorcycle Model: Harley Davidson FLH
Other Motorcycle Year: 1973
Reputation: 108165
JacksBrother has much to be proud ofJacksBrother has much to be proud ofJacksBrother has much to be proud ofJacksBrother has much to be proud ofJacksBrother has much to be proud ofJacksBrother has much to be proud ofJacksBrother has much to be proud ofJacksBrother has much to be proud ofJacksBrother has much to be proud ofJacksBrother has much to be proud ofJacksBrother has much to be proud of
Default

Quote:
Originally Posted by davy View Post
Hi,

I bought the SS Teardrop air cleaner for my 98 sportser xl1200. The bike is running great with it. However, I noticed the head and base gasket started leaking.

Could it be possible that head breather assembly (banjo and rubber) is more restrictive than stock and causing that problem ?

Time to change all those gaskets... ?
The bike as 70 000km.

Thanks so much
Welcome to the Forum!
I'm running the same set-uo on my '98 1200 as well. I like it a lot. Which cylinder is leaking?
I seriously doubt that the breather hose / banjo bolt system could have any affect on your gasket leaks. I think that the 50,000 miles on the speedometer is a more likely culprit.
Good luck with your gasket change,
Joe
Reply With Quote
  #3  
Old 5th July 2018
sportysrock's Avatar
sportysrock sportysrock is offline
Senior Master Custom Bike Builder
 
Join Date: Jul 2005
Location: Disinformation Superhighway Exit 55
Posts: 4,418
Sportster/Buell Model: XL883H/1200H
Sportster/Buell Year: '96
Sportster/Buell Model #2: XLCH 1000 w/elec. leg too
Sportster/Buell Year #2: '72
Reputation: 437003
sportysrock has a reputation beyond reputesportysrock has a reputation beyond reputesportysrock has a reputation beyond reputesportysrock has a reputation beyond reputesportysrock has a reputation beyond reputesportysrock has a reputation beyond reputesportysrock has a reputation beyond reputesportysrock has a reputation beyond reputesportysrock has a reputation beyond reputesportysrock has a reputation beyond reputesportysrock has a reputation beyond repute
Default

The vent hole in a stock breather bolt is about 1/16". Did you notice how large the S&S are?

Sent with :-)
__________________
Ol' Big Daddy of the Dirty Ducks MC
I'll see your Twin Cams and raise you 2 more
Unlike the Internet, Al Gore DID INVENT Global Warming
Political Correctness never killed any terrorists.
Reply With Quote
  #4  
Old 24th September 2019
kneeco's Avatar
kneeco kneeco is offline
Biker
 
Join Date: May 2008
Posts: 32
Sportster/Buell Model: Sportstser XLH
Sportster/Buell Year: 1999
Reputation: 10
kneeco is an unknown quantity at this point
Default

I had same issue with a breather kit. The opening were similar size but the angle the banjo bolt creates and the longer run disrupted the airflow enough to upset my bike.
Reply With Quote
  #5  
Old 24th September 2019
60Gunner's Avatar
60Gunner 60Gunner is online now
Senior Custom Bike Builder
 
Join Date: Sep 2017
Location: United States
Posts: 2,924
Sportster/Buell Model: 1200/1250C
Sportster/Buell Year: 05
Reputation: 3247009
60Gunner has a reputation beyond repute60Gunner has a reputation beyond repute60Gunner has a reputation beyond repute60Gunner has a reputation beyond repute60Gunner has a reputation beyond repute60Gunner has a reputation beyond repute60Gunner has a reputation beyond repute60Gunner has a reputation beyond repute60Gunner has a reputation beyond repute60Gunner has a reputation beyond repute60Gunner has a reputation beyond repute
Default

Your umbrellas may be shot too and you're sucking air in. Pressure will build.
Vent from the cam chest and your gasket leaks will be but a distant memory. Better ring seal too.
No more mess dangling from your heads or air cleaner. No more oil all over the side of your motor.
Plug them with solid bolts and never look back.

Check out "Installing the Ultimate Crankcase Vent" in the Sportsterpedia.
I use the Hayden Krankvent KVP38.

http://sportsterpedia.com/doku.php/t...ref:engmech05d

Last edited by 60Gunner; 24th September 2019 at 17:28..
Reply With Quote
  #6  
Old 24th September 2019
Hippysmack's Avatar
Hippysmack Hippysmack is offline
XL FORUM TEAM MEMBER
 
Join Date: Jul 2014
Posts: 6,399
Sportster/Buell Model: Xl1250S
Sportster/Buell Year: 98
Other Motorcycle Model: Kawasaki Vulcan 500
Other Motorcycle Year: 95
Reputation: 6453807
Hippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond repute
Default

Yes, any changes to the OEM breathing system Can affect overall breathing in general.
How much, good or bad, depends on your individual engine variables.
If you run the line up or down from the head outlet, length and height of hose.

The first things you should look at if you're having problems is the umbrella valves.
They are flimsy rubber valves and they don't last forever.
If you run a filter on the end of the breather hose, take it off. It is unnecessary and in some cases very harmful to the breathing system.
It'll cake up with condensation / oil and hinder or stop up your breathing path.
The next thing to do is perform a compression or leakdown test to check if you have excess ring or valve leakage causing more air intake into the crankcase.
__________________
Reference the XLFORUM'S Sportsterpedia for additional technical information & advice

In Search of Fuel, Sunshine and a Steady Idle.
Reply With Quote
  #7  
Old 24th September 2019
60Gunner's Avatar
60Gunner 60Gunner is online now
Senior Custom Bike Builder
 
Join Date: Sep 2017
Location: United States
Posts: 2,924
Sportster/Buell Model: 1200/1250C
Sportster/Buell Year: 05
Reputation: 3247009
60Gunner has a reputation beyond repute60Gunner has a reputation beyond repute60Gunner has a reputation beyond repute60Gunner has a reputation beyond repute60Gunner has a reputation beyond repute60Gunner has a reputation beyond repute60Gunner has a reputation beyond repute60Gunner has a reputation beyond repute60Gunner has a reputation beyond repute60Gunner has a reputation beyond repute60Gunner has a reputation beyond repute
Default

Alternatively, and meeting Hippy in the middle so to speak, is add the krankvent in your breather hose after they come together. Keep it pointed down, run it under the frame, no filter like Hippy said.
This can be done if drilling/tapping a hole in the cam cover doesn't appeal to you. It's a better designed one way valve, it's external and comes apart for easy cleaning if it were necessary, and you won't have the stock umbrellas to worry about failing again and removing your rocker covers to fix. For best results they should be removed tho.
Cam chest venting is best tho imo. If for no other reason, aesthetics. Altho some of believe it's the best place to vent. A controversial subject with no definitive proof either way at best. Now you can make an informed decision that suits you.
Reply With Quote
  #8  
Old 24th September 2019
Hippysmack's Avatar
Hippysmack Hippysmack is offline
XL FORUM TEAM MEMBER
 
Join Date: Jul 2014
Posts: 6,399
Sportster/Buell Model: Xl1250S
Sportster/Buell Year: 98
Other Motorcycle Model: Kawasaki Vulcan 500
Other Motorcycle Year: 95
Reputation: 6453807
Hippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond repute
Default

Quote:
Originally Posted by 60gunner View Post
alternatively, and meeting hippy in the middle so to speak, is add the krankvent in your breather hose after they come together. Keep it pointed down, run it under the frame, no filter like hippy said.
This can be done if drilling/tapping a hole in the cam cover doesn't appeal to you. It's a better designed one way valve, it's external and comes apart for easy cleaning if it were necessary, and you won't have the stock umbrellas to worry about failing again and removing your rocker covers to fix. For best results they should be removed tho.
Cam chest venting is best tho imo. If for no other reason, aesthetics. Altho some of believe it's the best place to vent. A controversial subject with no definitive proof either way at best. Now you can make an informed decision that suits you.
+1
Reply With Quote
  #9  
Old 25th September 2019
cycowrencher's Avatar
cycowrencher cycowrencher is offline
XL FORUM TEAM MEMBER
 
Join Date: May 2009
Location: Pepperell, MA
Posts: 2,749
Sportster/Buell Model: XLH 1200
Sportster/Buell Year: 2003
Other Motorcycle Model: 1984 KX 125
Reputation: 263417
cycowrencher has a brilliant futurecycowrencher has a brilliant futurecycowrencher has a brilliant futurecycowrencher has a brilliant futurecycowrencher has a brilliant futurecycowrencher has a brilliant futurecycowrencher has a brilliant futurecycowrencher has a brilliant futurecycowrencher has a brilliant futurecycowrencher has a brilliant futurecycowrencher has a brilliant future
Default

My root cause for excessive blow by through the head breather was my rear cylinder compression rings had the gaps lined up. I had to replace cylinders and when new rings were installed in the correct x pattern ( top comp at upper left, bottom comp at lower right, top oil at upper right, and bottom oil at lower left) my issue magically disappeared. I think I replaced the umbrellas 6 or 7 times and it was always there...even when I installed the cam chest breather setup...

Sent from my LG-LS993 using Tapatalk
__________________
USN 1991-1995 VFA-81/ USS Saratoga, Iraq 1, Kosovo/ Bosnia Conflict
Reply With Quote
  #10  
Old 25th September 2019
Hippysmack's Avatar
Hippysmack Hippysmack is offline
XL FORUM TEAM MEMBER
 
Join Date: Jul 2014
Posts: 6,399
Sportster/Buell Model: Xl1250S
Sportster/Buell Year: 98
Other Motorcycle Model: Kawasaki Vulcan 500
Other Motorcycle Year: 95
Reputation: 6453807
Hippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond repute
Default

The rings are always moving around and sometimes they do all line up that way.
They will move away from being lined up also. They don't stay in one spot.
But when they are lined up that way, they could easily allow more air thru.
Reply With Quote
Reply

Bookmarks


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



All times are GMT +1. The time now is 00:46.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
XL Forum® - Linson Media LLC