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 > Ironhead Sportster Motorcycle Talk (1957-1985)
XLF Blogs XLF Arcade XLF Disclaimer/Privacy Statement/Terms Of Use

Notices

Ironhead Sportster Motorcycle Talk (1957-1985) For all those that wanna talk about Ironhead Sportster Motorcycles

Active Threads
5 Request advice - Engine knock above 2800rpm
Last Post: Bikeaholic
Posted On: 23 Minutes Ago
Replies: 16
Views: 570
0 Do you use premium gas in your Sportster?
Last Post: Hellbent_4
Posted On: 40 Minutes Ago
Replies: 1,836
Views: 389,734
0 Town Bike Handlebar Styling
Last Post: harley506d
Posted On: 1 Hour Ago
Replies: 1
Views: 30
0 WTF Happened
Last Post: iNSaNeSHaNe
Posted On: 1 Hour Ago
Replies: 1,247
Views: 211,802
0 The salty debate thread.
Last Post: Ireeman
Posted On: 2 Hours Ago
Replies: 36
Views: 931
0 EFI Sporty Hanging Revs
Last Post: gwd1994
Posted On: 3 Hours Ago
Replies: 15
Views: 323
0 Official XL Forum Random Image Thread (NO NUDITY!)
Last Post: maltesefalcon
Posted On: 4 Hours Ago
Replies: 48,369
Views: 7,797,465
0 Potential future changes for the Sportster motor?
Last Post: awright2009
Posted On: 5 Hours Ago
Replies: 29
Views: 1,368
0 Hottie of the day, no nudity.
Last Post: trainman
Posted On: 5 Hours Ago
Replies: 22,043
Views: 2,255,215
0 What did you do for your sporty Today?
Last Post: Toejam503
Posted On: 5 Hours Ago
Replies: 7,139
Views: 1,039,145
0 Hello
Last Post: Toejam503
Posted On: 5 Hours Ago
Replies: 12
Views: 144
0 Sportster fans, tell us why!
Last Post: Toejam503
Posted On: 5 Hours Ago
Replies: 646
Views: 179,584
0 Range With EFI 3.3 Gal Tank
Last Post: Nibelungen
Posted On: 6 Hours Ago
Replies: 96
Views: 64,616
0 This is gonna hurt.
Last Post: iNSaNeSHaNe
Posted On: 7 Hours Ago
Replies: 8,166
Views: 1,742,800
0 Y Grind cams in a 900
Last Post: Staffords
Posted On: 7 Hours Ago
Replies: 11
Views: 658
0 Keep & Kill
Last Post: Graywolf
Posted On: 8 Hours Ago
Replies: 18,095
Views: 1,066,915
0 2014 883 Question
Last Post: 5mel42
Posted On: 8 Hours Ago
Replies: 6
Views: 153
0 Snippets
Last Post: rokytnji
Posted On: 8 Hours Ago
Replies: 238
Views: 23,893
0 Howdy
Last Post: rokytnji
Posted On: 9 Hours Ago
Replies: 10
Views: 124
0 Do you blip the throttle when downshifting?
Last Post: iNSaNeSHaNe
Posted On: 9 Hours Ago
Replies: 472
Views: 85,518
0 Why Torx?
Last Post: sportsterdoc
Posted On: 9 Hours Ago
Replies: 18
Views: 576
0 Accelerator nozzle and idle not right
Last Post: sportsterdoc
Posted On: 9 Hours Ago
Replies: 62
Views: 2,210
0 Ultima electronic ignition installation - Solved
Last Post: Nitro57xl
Posted On: 9 Hours Ago
Replies: 70
Views: 2,435
0 Static timing
Last Post: ftwflh
Posted On: 10 Hours Ago
Replies: 5
Views: 160
0 Starting bike after 6 year hiatus
Last Post: darwin-t
Posted On: 10 Hours Ago
Replies: 36
Views: 1,776
0 19" Tire w/23" Overall Diameter???
Last Post: ferretface
Posted On: 10 Hours Ago
Replies: 0
Views: 57
0 79-85 Breather Vent Mod - Adding a Secondary Vent Hose at 6:00 Position
Last Post: Hippysmack
Posted On: 11 Hours Ago
Replies: 2
Views: 72
0 Roads I'd like to ride.
Last Post: Stairman
Posted On: 11 Hours Ago
Replies: 3,239
Views: 309,931
0 ....1
Last Post: Graywolf
Posted On: 12 Hours Ago
Replies: 5,811
Views: 333,794
0 Tire replacement costs?
Last Post: Ireeman
Posted On: 14 Hours Ago
Replies: 9
Views: 387
More...
Members Birthdays
ziggyhd1 (62), MikeDelta (62), greven (60), bliynd (35), Steveb1990 (30)
Reply
 
Share Thread Tools Display Modes
  #1  
Old 24th March 2008
Alun's Avatar
Alun Alun is offline
Biker
 
Join Date: Feb 2008
Posts: 12
Sportster/Buell Model: Ironhead
Sportster/Buell Year: 1971
Other Motorcycle Model: Harley V-Rod
Other Motorcycle Year: 2006
Reputation: 10
Alun is an unknown quantity at this point
Default Cleaning a Carb

I am restoring a '71 Ironhead and wondered if there was any tips and tricks for taking off/stripping/cleaning/putting back the carb?

If there's already a stickie then could you point me towards that. Cheers. Alun
Reply With Quote
  #2  
Old 24th March 2008
IronMick's Avatar
IronMick IronMick is offline
Rider Of The Iron Steed
 
Join Date: Dec 2003
Location: London, ON Canada
Posts: 32,440
Sportster/Buell Model: XLH
Sportster/Buell Year: 1978
Reputation: 1213037
IronMick has a reputation beyond reputeIronMick has a reputation beyond reputeIronMick has a reputation beyond reputeIronMick has a reputation beyond reputeIronMick has a reputation beyond reputeIronMick has a reputation beyond reputeIronMick has a reputation beyond reputeIronMick has a reputation beyond reputeIronMick has a reputation beyond reputeIronMick has a reputation beyond reputeIronMick has a reputation beyond repute
Default

1. Removing it from the bike should be straight forward. First thing when it is out is to check the pilot screw setting. Turn it all the way in until gently seated counting the number of 1/4 turns; then write this number down; then reset it.

2. I put mine in a vice to remove the screws, and for much of the following work. Wrap in a shop towel; close the vice gently taking extra care with the choke and throttle linkages. The vice is a needed extra pair of hands.

EDIT: This setup works better than putting the carb directly into the vice ...





3. I am very careful handling the float so as to not change the level. I use the official specs for setting the level as in the FM, and check it, every time i dismantle the carb, as the last thing before putting it back together.

4. The jets are made of brass, a soft metal that is easily damaged. Use an exact correct size screwdriver. I ground a medium flat blade screwdriver down to exact size on my bench grinder to access the slow jet.

5. The general appearance of the inside of the carb is not necessarily a good indication of its condition. It can look spotless and have clogged jets, or look cruddy and have clear jets.

6. I prefer to clean each individual part rather than soak or boil the whole carb in carb cleaner. But either way is good. Do not allow any solvents to contact any rubber parts [tip of needle, o-ring seal for bowl].

7. Make a list of all of the jets and passages for your carb using the carb manual or the FM for the bike. Then ensure that you can blow either compressed air or carb cleaner thru each one.

8. Remove the pilot screw and clean the parts and the passage. The passage contains in this sequence: pilot screw, spring, washer, o-ring. These are very small parts, especially the washer and o-ring. Usually the spring will easily fall out. One time i thought the spring was not in there because it would not fall out; i obtained a new spring and could not get it in! The technique for removing the washer and o-ring is to use a pipe cleaner: stick it in the hole, twist it around, remove it - you should see the washer and o-ring on the end of the pipe cleaner.

Remember that the purpose of the washer is to protect the o-ring from the spring and you will always get them back in in the correct sequence.

EDIT: Some carbs, noteably 1966 to 1978 Sportster carbs, do not have the o-ring and washer in the pilot screw passage.

9. Dismantle the accelerator pump assembly noting carefully the sequence and orientation of the parts. Clean and inspect the parts. Replace the diaphragm if it is cracked.

10. Check the float level then carefully put it back together. I personally find it very confusing trying to decide which way to bend the tang if it is not correct. If the fuel level is low is the float high or low? Do i need to bend the tang up or down? On the bench the carb is usually upside down, adding to the confusion. Sort all this out before making an adjustment.

Best to replace the original Phillips screws for the bowl with stainless steel socket head screws.
__________________
Mick
IronHead Forever!

Visit Mick's WebSite
[And Check Out My Autobiog]

Last edited by IronMick; 29th May 2019 at 00:24..
Reply With Quote
  #3  
Old 24th March 2008
AMF Harley-Davidson's Avatar
AMF Harley-Davidson AMF Harley-Davidson is offline
Greasemonkey
 
Join Date: Nov 2007
Posts: 125
Sportster/Buell Model: XL 1000
Sportster/Buell Year: 1975
Reputation: 59
AMF Harley-Davidson is an unknown quantity at this point
Default

Quote:
Originally Posted by Alun View Post
I am restoring a '71 Ironhead and wondered if there was any tips and tricks for taking off/stripping/cleaning/putting back the carb?

If there's already a stickie then could you point me towards that. Cheers. Alun
Hi Alun
What Carb do you have? Is it the original Tillotson?

Bob
Reply With Quote
  #4  
Old 24th March 2008
Alun's Avatar
Alun Alun is offline
Biker
 
Join Date: Feb 2008
Posts: 12
Sportster/Buell Model: Ironhead
Sportster/Buell Year: 1971
Other Motorcycle Model: Harley V-Rod
Other Motorcycle Year: 2006
Reputation: 10
Alun is an unknown quantity at this point
Default

Yes it is. I not too bad nick but looks quite "sooty"
Reply With Quote
  #5  
Old 26th March 2008
IronMick's Avatar
IronMick IronMick is offline
Rider Of The Iron Steed
 
Join Date: Dec 2003
Location: London, ON Canada
Posts: 32,440
Sportster/Buell Model: XLH
Sportster/Buell Year: 1978
Reputation: 1213037
IronMick has a reputation beyond reputeIronMick has a reputation beyond reputeIronMick has a reputation beyond reputeIronMick has a reputation beyond reputeIronMick has a reputation beyond reputeIronMick has a reputation beyond reputeIronMick has a reputation beyond reputeIronMick has a reputation beyond reputeIronMick has a reputation beyond reputeIronMick has a reputation beyond reputeIronMick has a reputation beyond repute
Default

I am giving this thread a bump as i made it a Sticky and edited my post #2 to include more detail.
Reply With Quote
  #6  
Old 12th April 2008
diabloblanco's Avatar
diabloblanco diabloblanco is offline
Biker
 
Join Date: Feb 2008
Posts: 94
Sportster/Buell Model: Sportster
Sportster/Buell Year: 2001
Reputation: 24
diabloblanco is an unknown quantity at this point
Default

Pretty good site with pictures on a Super G rebuild:

Thanks for the info!!!

http://www.hotrodsbikeworks.com/tech...ild/index.html
Reply With Quote
  #7  
Old 16th April 2008
74chopster's Avatar
74chopster 74chopster is offline
Biker
 
Join Date: Oct 2005
Location: leesville
Posts: 39
Sportster/Buell Model: sportster 74chopster xlch
Sportster/Buell Year: 1974
74chopster has disabled reputation
Default

i cleaned my super b and now it turned to shit. it seems the varnish was holding it together. the throttle shaft obtained a major leak after cleaning. and im not going to buy the repair kit. im going to a super e shorty this time it has excelerator pump. so be carefull what you ask for lol
Reply With Quote
  #8  
Old 3rd May 2008
Monte03's Avatar
Monte03 Monte03 is offline
Senior Master Custom Bike Builder
 
Join Date: Mar 2008
Posts: 4,798
Sportster/Buell Model: XLCH
Sportster/Buell Year: 1969
Sportster/Buell Model #2: 1966 XLCH
Other Motorcycle Model: BMW Twin
Other Motorcycle Year: 82
Reputation: 87881
Monte03 has much to be proud ofMonte03 has much to be proud ofMonte03 has much to be proud ofMonte03 has much to be proud ofMonte03 has much to be proud ofMonte03 has much to be proud ofMonte03 has much to be proud ofMonte03 has much to be proud ofMonte03 has much to be proud ofMonte03 has much to be proud ofMonte03 has much to be proud of
Default Carb Cleaning

Dismantle the carb down to the body and soak it in Mineral Spirits for a few days, you will be suprized at all the dirt in the bottom of the soaking container.
just let it sit.
I have also heard of guys blasting the body with Baking Powder..
Reply With Quote
  #9  
Old 23rd June 2008
russzx6's Avatar
russzx6 russzx6 is offline
Master Custom Bike Builder
 
Join Date: Jan 2008
Location: Brisbane, Australia
Posts: 3,072
Sportster/Buell Model: 1000cc Ironhead Sportster
Sportster/Buell Year: 1977
Other Motorcycle Model: 96 KDX200 Dirt Bike
Reputation: 20400
russzx6 is a name known to allrusszx6 is a name known to allrusszx6 is a name known to allrusszx6 is a name known to allrusszx6 is a name known to allrusszx6 is a name known to allrusszx6 is a name known to allrusszx6 is a name known to allrusszx6 is a name known to allrusszx6 is a name known to allrusszx6 is a name known to all
Default

I always use acrylic paint thinners for cleaning up carb parts. .melts that fuel varnish right off. .but watch out it really gives rubber and gasket material a hard time
Reply With Quote
  #10  
Old 1st July 2008
forumsnowboards1st's Avatar
forumsnowboards1st forumsnowboards1st is offline
Biker
 
Join Date: Jun 2008
Posts: 9
Sportster/Buell Model: An old 74 iron head
Sportster/Buell Year: 1974
Other Motorcycle Model: Honda cbr
Other Motorcycle Year: 2004
Reputation: 10
forumsnowboards1st is an unknown quantity at this point
Default

started on an original bendix carb that was in one of the junk boxes that got tossed in the back the truck when I bought the the 1974 iron head. it looked like it has never been mounted or used. but where the fuel comes in the brass piece was broken off. i tried drilling it out hoping go back in and pull the remaining treads with the needle nose pliers. this didn't work brass doesn't plyable enough and if I move up another size on the drill bit I'll be drilling the carb not the brass fitting. Also the darn brass screws wont come out so i can get the metal shaving that falling into the carb out. I need help any suggestion?
__________________
jon
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 09:40.


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