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

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

Active Threads
0 74' XLCH wiring question
Last Post: Hippysmack
Posted On: 1 Minute Ago
Replies: 4
Views: 80
0 Low Profile Scissors Lift
Last Post: mikeLI_77
Posted On: 7 Minutes Ago
Replies: 11
Views: 150
0 What did you do for your sporty Today?
Last Post: Gulf Coaster
Posted On: 32 Minutes Ago
Replies: 6,747
Views: 930,781
0 Resto-Repair 84 ironhead
Last Post: ferretface
Posted On: 33 Minutes Ago
Replies: 26
Views: 1,561
0 Hot Chicks on Hot Bikes
Last Post: boomerguy
Posted On: 40 Minutes Ago
Replies: 10,696
Views: 1,967,913
0 Oil Leak ??????
Last Post: Hippysmack
Posted On: 40 Minutes Ago
Replies: 21
Views: 260
0 never mind
Last Post: Hippysmack
Posted On: 43 Minutes Ago
Replies: 153
Views: 14,904
0 Keep & Kill
Last Post: Graywolf
Posted On: 46 Minutes Ago
Replies: 16,318
Views: 926,710
0 Diagnostic code ?
Last Post: Hippysmack
Posted On: 50 Minutes Ago
Replies: 35
Views: 1,119
0 No spark
Last Post: IXL2Relax
Posted On: 1 Hour Ago
Replies: 6
Views: 227
0 FNG from Oregon
Last Post: Hippysmack
Posted On: 1 Hour Ago
Replies: 14
Views: 517
1 Sportster's they are just sexy
Last Post: sportsterpaul
Posted On: 1 Hour Ago
Replies: 17
Views: 1,187
0 Dual Disc Conversion - Slider Clearance
Last Post: sportsterpaul
Posted On: 1 Hour Ago
Replies: 2
Views: 115
0 Corona Virus
Last Post: Folkie
Posted On: 1 Hour Ago
Replies: 378
Views: 19,140
0 '03 883 custom only idles with the choke on
Last Post: sportsterpaul
Posted On: 1 Hour Ago
Replies: 16
Views: 1,441
0 How packed is your garage?
Last Post: rokytnji
Posted On: 2 Hours Ago
Replies: 6
Views: 316
0 XR1200 for trail riding
Last Post: Steve9
Posted On: 2 Hours Ago
Replies: 7
Views: 767
0 Started my chop today!
Last Post: skid_ro
Posted On: 2 Hours Ago
Replies: 19
Views: 3,167
0 Ceramic Wax
Last Post: John Harper
Posted On: 2 Hours Ago
Replies: 10
Views: 265
0 Who runs 70wt. oil
Last Post: glbsportster
Posted On: 3 Hours Ago
Replies: 90
Views: 11,880
0 My blow through turbo XL1200C
Last Post: hondo
Posted On: 3 Hours Ago
Replies: 10
Views: 514
0 What did you do to your EFI Sporty today?
Last Post: Folkie
Posted On: 3 Hours Ago
Replies: 3,962
Views: 775,938
0 Test for picture
Last Post: Ireeman
Posted On: 4 Hours Ago
Replies: 2
Views: 74
0 ....1
Last Post: Graywolf
Posted On: 4 Hours Ago
Replies: 5,171
Views: 309,328
0 New 2020 BMW R18 First Edition Full Specs Announced: Can It Beat Harley?
Last Post: rokytnji
Posted On: 4 Hours Ago
Replies: 5
Views: 105
0 Spark Plugs
Last Post: doodah man
Posted On: 4 Hours Ago
Replies: 87
Views: 52,600
0 1960 XLCH in the UK
Last Post: lynnx
Posted On: 4 Hours Ago
Replies: 249
Views: 28,988
0 Government and financial services rip-off
Last Post: Ireeman
Posted On: 5 Hours Ago
Replies: 25
Views: 768
0 Hottie of the day, no nudity.
Last Post: trainman
Posted On: 6 Hours Ago
Replies: 17,927
Views: 1,807,809
11 How much did you spend on accessories in the first month?
Last Post: Folkie
Posted On: 7 Hours Ago
Replies: 173
Views: 12,002
More...
Members Birthdays
ralphy, rpcycle (69), shag (67), roadcapDen (66), oedius (63), Coolride (58), 1965XLCH (54), fingerpie (49), Pacer88888 (48), Smitty001 (42), wiccaboa (42), Homiejaime (34), Popedizzle (31), Moker (17)
Reply
 
Share Thread Tools Display Modes
  #1  
Old 1 Week Ago
ferretface's Avatar
ferretface ferretface is offline
XL FORUM TEAM MEMBER
 
Join Date: Jun 2019
Posts: 300
Sportster/Buell Model: XLH
Sportster/Buell Year: 1983
Reputation: 73106
ferretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud of
Default Valve Adjustment ?

1983 XLH Sportster, stock engine configuration.

I'm looking at things that need inspection/adjustment during this Winter downtime, and the only adjustment for valve clearance I can find is the tappet adjustment. Is that correct???

My previous H-D Sportster was an XR-1000, which used an eccentric lobe on the rocker arm shaft to directly adjust rocker to valve clearance. The XR uses a solid one piece pushrod. No 'tappet adjustment'.

The XL tappet adjustment seems...bizarre...

Edit: I've read the FSM and Iron Mick's thread on adjustment. It just seems rather odd to adjust the tappets to 0 clearance ("twirl clearance")...
__________________
All of old. Nothing else ever. Ever tried. Ever failed. No matter. Try again. Fail again. Fail better. -- Samuel Beckett

Last edited by ferretface; 1 Week Ago at 18:45..
Reply With Quote
  #2  
Old 1 Week Ago
thefrenchowl's Avatar
thefrenchowl thefrenchowl is offline
Senior Custom Bike Builder
 
Join Date: Nov 2006
Posts: 2,886
Sportster/Buell Model: KHK
Sportster/Buell Year: 1954
Sportster/Buell Model #2: IronHead XLH
Sportster/Buell Year #2: 1978
Other Motorcycle Model: XLRTT
Other Motorcycle Year: 1966
Reputation: 196379
thefrenchowl has a brilliant futurethefrenchowl has a brilliant futurethefrenchowl has a brilliant futurethefrenchowl has a brilliant futurethefrenchowl has a brilliant futurethefrenchowl has a brilliant futurethefrenchowl has a brilliant futurethefrenchowl has a brilliant futurethefrenchowl has a brilliant futurethefrenchowl has a brilliant futurethefrenchowl has a brilliant future
Default

You could say the XR 1000 has ""rocker adjustment"" to get the same analogy at ""tappet adjustment""...

Nought wrong with either, just different locations...

And same procedure, unlock sommat, insert feeler/feel sommat, adjust sommat, retighten sommat...

; O )

Patrick
__________________
Flat Head Forever
Reply With Quote
  #3  
Old 1 Week Ago
doodah man's Avatar
doodah man doodah man is online now
Senior Master Custom Bike Builder
 
Join Date: May 2009
Location: 37° 25' 28" N by -80° 03' 42" W
Posts: 10,650
Sportster/Buell Model: XLCH
Sportster/Buell Year: 1975
Reputation: 675860
doodah man has a reputation beyond reputedoodah man has a reputation beyond reputedoodah man has a reputation beyond reputedoodah man has a reputation beyond reputedoodah man has a reputation beyond reputedoodah man has a reputation beyond reputedoodah man has a reputation beyond reputedoodah man has a reputation beyond reputedoodah man has a reputation beyond reputedoodah man has a reputation beyond reputedoodah man has a reputation beyond repute
Default

Yep, the lifter has a screw cup with a locking nut, that’s your only adjustment.
__________________
Nine mile skid on a ten mile ride, hot as a pistol but cool inside.
Reply With Quote
  #4  
Old 1 Week Ago
ferretface's Avatar
ferretface ferretface is offline
XL FORUM TEAM MEMBER
 
Join Date: Jun 2019
Posts: 300
Sportster/Buell Model: XLH
Sportster/Buell Year: 1983
Reputation: 73106
ferretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud of
Default

Quote:
Originally Posted by doodah man View Post
Yep, the lifter has a screw cup with a locking nut, that’s your only adjustment.
OK. Now, I'm reading in Mick's thread that the nut should be backed off one flat from zero clearance. Sounds good.

http://xlforum.net/forums/showthread.php?t=44143

Does anyone have a loose Ironhead tappet adjuster nut that they can measure (or just screw on a known bolt) the thread size??? The FSM and/or parts books don't say the thread. Like, is it 3/8-24 or 7/16-20 or even some odd National Extra Fine thread???
Reply With Quote
  #5  
Old 1 Week Ago
needspeed needspeed is offline
XL FORUM LIFE MEMBER
 
Join Date: May 2014
Posts: 1,096
Sportster/Buell Model: xlh
Sportster/Buell Year: 1974
Reputation: 418884
needspeed has a reputation beyond reputeneedspeed has a reputation beyond reputeneedspeed has a reputation beyond reputeneedspeed has a reputation beyond reputeneedspeed has a reputation beyond reputeneedspeed has a reputation beyond reputeneedspeed has a reputation beyond reputeneedspeed has a reputation beyond reputeneedspeed has a reputation beyond reputeneedspeed has a reputation beyond reputeneedspeed has a reputation beyond repute
Default

Not very common. Tappet adjuster thread = 9/32-32
Reply With Quote
  #6  
Old 1 Week Ago
ferretface's Avatar
ferretface ferretface is offline
XL FORUM TEAM MEMBER
 
Join Date: Jun 2019
Posts: 300
Sportster/Buell Model: XLH
Sportster/Buell Year: 1983
Reputation: 73106
ferretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud of
Default

Quote:
Originally Posted by needspeed View Post
Not very common. Tappet adjuster thread = 9/32-32
Wow. That's between 1/4" and 5/16" diameter. I didn't think the pushrod would be that thin.

OK, that means one complete turn would equal .031". One flat would be 1/6 of a turn which would be .005". So that would be the theoretical valve clearance for the Ironhead.

The XR valve clearance is .002"-.003". It's comparing apples to oranges because of iron vs aluminum but I think it's interesting that they are that close.

Thank you for the thread measurement!
Reply With Quote
  #7  
Old 1 Week Ago
Hopalong48's Avatar
Hopalong48 Hopalong48 is offline
Greasemonkey
 
Join Date: Dec 2018
Posts: 117
Sportster/Buell Model: XLH
Sportster/Buell Year: 1966
Reputation: 41038
Hopalong48 is a splendid one to beholdHopalong48 is a splendid one to beholdHopalong48 is a splendid one to beholdHopalong48 is a splendid one to beholdHopalong48 is a splendid one to beholdHopalong48 is a splendid one to beholdHopalong48 is a splendid one to beholdHopalong48 is a splendid one to beholdHopalong48 is a splendid one to beholdHopalong48 is a splendid one to beholdHopalong48 is a splendid one to behold
Default

Back in the old days We used to adjust the lifter so that the pushrod would spin freely but you could not feel any up and down motion. That was on the solid lifter ironheads, is that what you have?

Sent from my SM-G975U using Tapatalk
Reply With Quote
  #8  
Old 1 Week Ago
ferretface's Avatar
ferretface ferretface is offline
XL FORUM TEAM MEMBER
 
Join Date: Jun 2019
Posts: 300
Sportster/Buell Model: XLH
Sportster/Buell Year: 1983
Reputation: 73106
ferretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud of
Default

Quote:
Originally Posted by Hopalong48 View Post
Back in the old days We used to adjust the lifter so that the pushrod would spin freely but you could not feel any up and down motion. That was on the solid lifter ironheads, is that what you have?
Yes. If you read that thread, it explains the backing off one flat tip.
Reply With Quote
  #9  
Old 1 Week Ago
IronMick's Avatar
IronMick IronMick is offline
Rider Of The Iron Steed
 
Join Date: Dec 2003
Location: London, ON Canada
Posts: 32,226
Sportster/Buell Model: XLH
Sportster/Buell Year: 1978
Reputation: 1079200
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

The backing off idea originated with a local mechanic here. He was also founder and president of the local Sportsters club. A really good guy.
__________________
Mick
IronHead Forever!

Visit Mick's WebSite
[And Check Out My Autobiog]
Reply With Quote
  #10  
Old 1 Week Ago
bustert's Avatar
bustert bustert is offline
XL FORUM TEAM MEMBER
 
Join Date: Jul 2008
Posts: 9,841
Sportster/Buell Model: 1200s
Sportster/Buell Year: 2001
Sportster/Buell Model #2: xlch
Sportster/Buell Year #2: 1974
Reputation: 3014785
bustert has a reputation beyond reputebustert has a reputation beyond reputebustert has a reputation beyond reputebustert has a reputation beyond reputebustert has a reputation beyond reputebustert has a reputation beyond reputebustert has a reputation beyond reputebustert has a reputation beyond reputebustert has a reputation beyond reputebustert has a reputation beyond reputebustert has a reputation beyond repute
Default

remember that clearance changes with engine temp.
free spin no up/down cold engine was they way it was usually done.
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 04:01.


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