Touring Models Road King, Road King Custom, Road King Classic, Road Glide, Street Glide, Electra Glide, Electra Glide Classic, and Electra Glide Ultra Classic bikes.
Sponsored by:
Sponsored by:

103 Breather

Thread Tools
 
Search this Thread
 
  #1  
Old 01-08-2017, 02:38 PM
cajun1957a's Avatar
cajun1957a
cajun1957a is offline
Road Warrior
Thread Starter
Join Date: Sep 2007
Posts: 1,252
Received 139 Likes on 83 Posts
Default 103 Breather

I put the outer Breather cover from a 103, over top of my high flow filter on my 03 RKC. There is no backing plate. One reason was for looks, as I like the look of a scoop but also to keep water out of the filter if hit by rain and or just washing. it also quiets the intake pulse down as well. Will it allow sufficient air flow? The High flow breather with KN filter fits nicely inside and the outer can is held on snuggly with the center bolt. I have no complaints about how it looks but was wondering if it hinders airflow in my 88. I have PC5 and kerker cans as well.

randy
 
  #2  
Old 01-08-2017, 03:17 PM
Cosmic Razorback's Avatar
Cosmic Razorback
Cosmic Razorback is offline
Seasoned HDF Member
Join Date: Aug 2008
Location: North Carolina
Posts: 19,360
Received 16,749 Likes on 6,894 Posts
Default

I hear good things about the newer air intake. Have had two dealers tell me with pipes and tuner Tom leave the stock intake that it does a great job. My brother was told the same and did tuner with D&D 2 into 1 with good luck.

If you were building big HP it would probably be a problem but I think you are good.
 
  #3  
Old 01-09-2017, 01:05 PM
mkguitar's Avatar
mkguitar
mkguitar is offline
Extreme HDF Member
Join Date: Sep 2010
Location: Phoenix '53, '88, '09 Big Twins
Posts: 14,746
Received 395 Likes on 337 Posts
Default

well there is some kind of backing plate...right?

the keys to a hi flow intake are


lack of restriction ( such as the plastic backing plate sealed to a cover)

filtration- some filters are restrictive or get clogged by dirt

ordering the air into the intake- a hi flow intake will have an air horn as part of a backing plate to order air into the intake, it helps the air to make the turn into the intake and by ordering it more air can move faster into the intake.

the 2014 complete intake (which fits 08 up) flows about 185 CFM, compare to about 160 CFM for the earlier design. the 185 is pretty good for a stock motor.


cajun's use of a cover will have negligible effect on his intake- the backing plate and filtration stay the same...

mike
 
  #4  
Old 01-09-2017, 01:21 PM
cajun1957a's Avatar
cajun1957a
cajun1957a is offline
Road Warrior
Thread Starter
Join Date: Sep 2007
Posts: 1,252
Received 139 Likes on 83 Posts
Default

The set up I have is a high flow round breather approximately 5 inches in diameter with a round K&N fliter. There is no backing plate as the whole breather assembly bolts to the intake manifold. The outer cover to this set up is held on by an allen bolt to the center of the unit. The outer 103 cover on a stock setup also is held on by an allen bolt in the center then covered by a small adheasive insignia 103 or Screamin Eagle plate. This is what I have done. the outer cover is there but the inner backing plate is not and is open.

randy
 
  #5  
Old 01-09-2017, 01:58 PM
RG Pilot's Avatar
RG Pilot
RG Pilot is offline
Road Warrior
Join Date: Aug 2014
Location: Vancouver, WA
Posts: 1,888
Received 275 Likes on 204 Posts
Default

I put on the SE stage 1 intake which does remove the backing plate/air box. I kept the stock 103 cover and used it on top of the new intake. Extra air is available because of the absence of the air box but the intake noise is very noticeable. I ended up putting the stock intake back on when I added and external breather but I switched the air filter element to a K&N. With headers, tuner, and mufflers, I didn't notice a loss in performance at all. The stock intake breathes more CFM than the motor can ever use and it's much quieter too.
 
  #6  
Old 01-09-2017, 06:11 PM
cajun1957a's Avatar
cajun1957a
cajun1957a is offline
Road Warrior
Thread Starter
Join Date: Sep 2007
Posts: 1,252
Received 139 Likes on 83 Posts
Default

I would have used a stock 103 breather with the backing plate complete but I was told it would not fit on an 03 so I just used the outer outer shell. And I still get some of the intake pulse but not as much as with the K&N open round breather.

randy
 
  #7  
Old 01-10-2017, 07:29 AM
OldPhat's Avatar
OldPhat
OldPhat is offline
Elite HDF Member
Join Date: Dec 2007
Location: Sparks Nevada
Posts: 3,617
Received 161 Likes on 146 Posts
Default

It sounds to me that your air filter has some type of back plate on it, but not the plastic
part that the old football cover sealed agents. If the new cover fits on the filter your OK.
 
  #8  
Old 01-10-2017, 11:28 AM
lt1-xjs's Avatar
lt1-xjs
lt1-xjs is offline
Road Master
Join Date: Nov 2012
Location: Centerville, ohio
Posts: 1,027
Received 68 Likes on 65 Posts
Default

The filter bolts to the back plate, the cover bolts to the filter. I have one on my '02 with a carb as well.103 Breather-img_20140725_090531_246.jpg
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Pothole914
General Harley Davidson Chat
10
07-02-2017 07:54 PM
oldbikenut
Dyna Glide Models
4
04-13-2015 05:23 PM
HDV-GLIDE
Touring Models
8
05-23-2013 06:51 PM
bufbills
Sportster Models
7
10-26-2012 04:33 PM
Lipper
Softail Models
5
06-27-2007 06:37 PM



Quick Reply: 103 Breather



All times are GMT -5. The time now is 06:35 PM.