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
0 New sportster in HD Research Survey
Last Post: Marsikus
Posted On: 1 Minute Ago
Replies: 86
Views: 5,689
0 What did you do for your sporty Today?
Last Post: ParrotHead
Posted On: 3 Minutes Ago
Replies: 7,328
Views: 1,082,620
0 2020 End of Year Report
Last Post: Ireeman
Posted On: 16 Minutes Ago
Replies: 3
Views: 79
0 Secondery Vin tag
Last Post: ryder rick
Posted On: 25 Minutes Ago
Replies: 15
Views: 415
0 Hottie of the day, no nudity.
Last Post: Stairman
Posted On: 30 Minutes Ago
Replies: 24,104
Views: 2,465,877
0 Better Brakes
Last Post: Ferrous Head
Posted On: 36 Minutes Ago
Replies: 5
Views: 94
0 Halloween 1250 Conversion
Last Post: rocketmangb
Posted On: 37 Minutes Ago
Replies: 58
Views: 4,141
0 MS rollers way too tight
Last Post: Ferrous Head
Posted On: 44 Minutes Ago
Replies: 15
Views: 448
0 Northern Canada late 1950’s
Last Post: npaisnel
Posted On: 1 Hour Ago
Replies: 5
Views: 157
0 mainshaft rollers size
Last Post: Ferrous Head
Posted On: 2 Hours Ago
Replies: 43
Views: 1,973
0 Sender Unit Part Number
Last Post: IronMick
Posted On: 2 Hours Ago
Replies: 8
Views: 353
0 Larger Roadster tank for 79-81 Sportster
Last Post: blk80bike
Posted On: 2 Hours Ago
Replies: 22
Views: 3,105
0 Fork oil q
Last Post: Ferrous Head
Posted On: 2 Hours Ago
Replies: 6
Views: 419
0 Keep & Kill
Last Post: Crusty
Posted On: 2 Hours Ago
Replies: 18,777
Views: 1,116,953
0 mainshaft retaining ring by sprocket
Last Post: ericfreeman
Posted On: 2 Hours Ago
Replies: 5
Views: 375
0 What's your opinion on windshields?
Last Post: boomerguy
Posted On: 2 Hours Ago
Replies: 1,254
Views: 231,513
0 Food porn
Last Post: Graywolf
Posted On: 3 Hours Ago
Replies: 2,145
Views: 433,899
0 Hot Rods, Rat Rods, and Customs.
Last Post: Stairman
Posted On: 3 Hours Ago
Replies: 4,292
Views: 640,569
0 XLCR replica in progress
Last Post: spiritof67
Posted On: 4 Hours Ago
Replies: 21
Views: 1,948
0 50 years of wins, the XR750
Last Post: CT XR rider
Posted On: 4 Hours Ago
Replies: 1
Views: 60
0 carbs?
Last Post: spiritof67
Posted On: 4 Hours Ago
Replies: 16
Views: 4,345
0 Paradise Weather Service
Last Post: Ireeman
Posted On: 4 Hours Ago
Replies: 10
Views: 360
0 my sunday driver...
Last Post: 84rzv500r
Posted On: 5 Hours Ago
Replies: 34
Views: 5,522
0 Roadster - No Key Start
Last Post: exexpat93
Posted On: 6 Hours Ago
Replies: 29
Views: 642
0 Difference between 2-1 and 2-2 exhaust
Last Post: RicThompson
Posted On: 6 Hours Ago
Replies: 26
Views: 4,549
0 Iree's late night cafe
Last Post: ~Grind~
Posted On: 6 Hours Ago
Replies: 1,777
Views: 247,692
0 tappet/blocks fitment by year
Last Post: Gold Member
Posted On: 7 Hours Ago
Replies: 4
Views: 188
2 My 1275 Hammer Conversion..
Last Post: Tomcatt
Posted On: 7 Hours Ago
Replies: 217
Views: 22,880
0 What engine oil do you use?
Last Post: rokytnji
Posted On: 8 Hours Ago
Replies: 485
Views: 104,881
3 Garage, beam trolley and ideas
Last Post: Akdawg
Posted On: 8 Hours Ago
Replies: 22
Views: 764
More...
Members Birthdays
Reply
 
Share Thread Tools Display Modes
  #91  
Old 3 Weeks Ago
eisenhead eisenhead is offline
Biker
 
Join Date: Apr 2019
Posts: 42
Sportster/Buell Model: XL/2
Sportster/Buell Year: 1981
Reputation: 10
eisenhead is an unknown quantity at this point
Default

So you think i can get away with another hone and new rings?
Or do i stick to what the machinist says? I could feel a big difference with my fingernail 0.2" under the firering. Also when putting in the pistons to check for ring end gap they had to go in exactly how they are set when mounted. So i assume the cylinders are egg shaped?!
Reply With Quote
  #92  
Old 3 Weeks Ago
Ferrous Head's Avatar
Ferrous Head Ferrous Head is offline
Blind Owl
 
Join Date: Jun 2009
Location: Sunshine Coast
Posts: 5,963
Sportster/Buell Model: XLB, XLCH, Sporton
Sportster/Buell Year: 1962
Sportster/Buell Model #2: XLCH
Sportster/Buell Year #2: 1966
Other Motorcycle Model: XLCH (Another one)
Other Motorcycle Year: 1966
Reputation: 1385550
Ferrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond repute
Default

Quote:
So you think i can get away with another hone and new rings?
No. Not if your machinist is correct.

This is why we measure things. If your machinist knows how to measure a bore, bore it to the correct size and do a decent hone job it will fix your problems.

If he knows what the size of the pistons are that are in there now and he can measure accurately he will be able to tell you how much bigger the bores need to be to get them back into tolerance.

I believe he's already done that and told you that you need to go up to +060 to bring the bores back into tolerance.

If you don't believe your machinist take them somewhere else. Get a second opinion if you want to.

But that edge at the top of the bore near the fire ring ?

That's the unworn part of the bore. The rings don't go all the way to the top of the bore and they leave an unworn section. What your feeling is how much the bore has worn since they were last bored/honed.
__________________
"I know only too well the evil that I propose. But my inclinations get the better of me."
Reply With Quote
  #93  
Old 3 Weeks Ago
ryder rick's Avatar
ryder rick ryder rick is online now
Senior Master Custom Bike Builder
 
Join Date: Jun 2008
Location: Cornelius, OR
Posts: 9,414
Reputation: 1114996
ryder rick has a reputation beyond reputeryder rick has a reputation beyond reputeryder rick has a reputation beyond reputeryder rick has a reputation beyond reputeryder rick has a reputation beyond reputeryder rick has a reputation beyond reputeryder rick has a reputation beyond reputeryder rick has a reputation beyond reputeryder rick has a reputation beyond reputeryder rick has a reputation beyond reputeryder rick has a reputation beyond repute
Default

If there is a step in the top of the bore it can break new pistons when the square edge of a new ring meets the worn edge of the step.

Bad JuJu for sure. Listen to your machinist he has to guarantee his work.

I just gave you a second opinion.

They don't call me Ironhead Rick just because I'm hard headed
__________________
Ryder Rick "I know right from wrong, but sometimes, wrong feels right"
Reply With Quote
  #94  
Old 2 Weeks Ago
eisenhead eisenhead is offline
Biker
 
Join Date: Apr 2019
Posts: 42
Sportster/Buell Model: XL/2
Sportster/Buell Year: 1981
Reputation: 10
eisenhead is an unknown quantity at this point
Default

Ok. I brought the stuff to him an everything is ordered. Hopefully i can ride it soon.
Thanks very much everybody! I´ll keep you updated.
Reply With Quote
  #95  
Old 2 Weeks Ago
doodah man's Avatar
doodah man doodah man is offline
Senior Master Custom Bike Builder
 
Join Date: May 2009
Location: 37° 25' 28" N by -80° 03' 42" W
Posts: 10,964
Sportster/Buell Model: XLCH
Sportster/Buell Year: 1975
Reputation: 875840
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

Make sure to clean everything "white glove inspection ready" when you get it back. Is he fitting the rings for you too?
__________________
"when you don't know where you're going, any road'll take you there"
Reply With Quote
  #96  
Old 2 Weeks Ago
eisenhead eisenhead is offline
Biker
 
Join Date: Apr 2019
Posts: 42
Sportster/Buell Model: XL/2
Sportster/Buell Year: 1981
Reputation: 10
eisenhead is an unknown quantity at this point
Default

I will clean them properly. Fitting the rings will be my job.
Reply With Quote
  #97  
Old 2 Weeks Ago
spacecoast spacecoast is offline
Chief Harley Engineer
 
Join Date: Mar 2011
Location: Brevard Count, Fl.
Posts: 525
Sportster/Buell Model: 883
Sportster/Buell Year: 1989
Reputation: 190873
spacecoast has a brilliant futurespacecoast has a brilliant futurespacecoast has a brilliant futurespacecoast has a brilliant futurespacecoast has a brilliant futurespacecoast has a brilliant futurespacecoast has a brilliant futurespacecoast has a brilliant futurespacecoast has a brilliant futurespacecoast has a brilliant futurespacecoast has a brilliant future
Default

Make sure your stuff rags around your rods at the spigot hole to prevent unfriendlies from taking refuge in your crankcase. Like a wrist pin circlip for example. You;ll be upset otherwise.
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 23:45.


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