The Sportster and Buell Motorcycle Forum - The XLFORUM®
 

Go Back   The Sportster and Buell Motorcycle Forum - The XLFORUM® > SPORTSTER MOTORCYCLE FORUM > Sportster Motorcycle Intake and Exhaust > Sportster Motorcycle Air intake, Carburetor, EFI, Fuel, and Exhaust
XLF Blogs XLF Arcade XLF Disclaimer/Privacy Statement/Terms Of Use

Notices

Sportster Motorcycle Air intake, Carburetor, EFI, Fuel, and Exhaust Problems, advice and/or how tos for Sporster and Buell motorcycle carburators, Electronic Fuel Injection (EFI), Air Intake, Fuel and Exhaust.

Active Threads
0 Hello from 1970s Wisconsin!
Last Post: WI_duker
Posted On: 23 Minutes Ago
Replies: 2
Views: 20
0 Dead battery cells - 1997 sportster 883
Last Post: jharback
Posted On: 24 Minutes Ago
Replies: 6
Views: 198
0 Anyone go racing last weekend?
Last Post: Vohnsen
Posted On: 52 Minutes Ago
Replies: 2,790
Views: 254,440
0 What brand synthetic oil do you use
Last Post: SoonerSport
Posted On: 1 Hour Ago
Replies: 380
Views: 94,276
0 Gravydog crashed again.
Last Post: ed_in_az
Posted On: 1 Hour Ago
Replies: 34
Views: 705
0 New Tires>Fallaway>Deale r>?
Last Post: ed_in_az
Posted On: 1 Hour Ago
Replies: 27
Views: 1,110
0 Psychedelic '70s SPortster Chopper Pictures
Last Post: salveson
Posted On: 1 Hour Ago
Replies: 741
Views: 648,898
0 getting this 78 back to the way it should be.
Last Post: DirtyCory
Posted On: 2 Hours Ago
Replies: 914
Views: 151,063
0 TC88A makes me smile until WOT
Last Post: rocketmangb
Posted On: 2 Hours Ago
Replies: 8
Views: 412
0 ....1
Last Post: Graywolf
Posted On: 3 Hours Ago
Replies: 4,623
Views: 220,232
0 Replacement Fuel line?
Last Post: John Harper
Posted On: 3 Hours Ago
Replies: 15
Views: 385
3 Wtb, Wts, Wtt, Wtg (Evos)
Last Post: rj2
Posted On: 3 Hours Ago
Replies: 30
Views: 68,577
0 Iree's late night cafe
Last Post: sportytrace
Posted On: 3 Hours Ago
Replies: 966
Views: 95,408
0 Moto Guzzi V9 Bobber debut
Last Post: mjptexas
Posted On: 4 Hours Ago
Replies: 25
Views: 992
0 fat man on a sportster
Last Post: cazz1000
Posted On: 4 Hours Ago
Replies: 6
Views: 1,182
0 Fitting 2003 sportster seat to 2004 sportster
Last Post: MudDigger
Posted On: 4 Hours Ago
Replies: 5
Views: 212
0 Thinking of a fall SE Ohio ride
Last Post: SteveK
Posted On: 4 Hours Ago
Replies: 36
Views: 1,351
0 Hottie of the day, no nudity.
Last Post: XL Ed
Posted On: 4 Hours Ago
Replies: 8,042
Views: 618,470
0 Electrical Problem with '77 XLH-no power
Last Post: Tator
Posted On: 5 Hours Ago
Replies: 48
Views: 1,607
0 Seats
Last Post: Beelzeboss
Posted On: 5 Hours Ago
Replies: 4
Views: 160
0 The Harroway: Sefton Warren To Powderham Castle
Last Post: Folkie
Posted On: 5 Hours Ago
Replies: 10
Views: 1,414
0 Official XL Forum Random Image Thread (NO NUDITY!)
Last Post: Graywolf
Posted On: 6 Hours Ago
Replies: 41,530
Views: 6,385,331
0 Out of the Box Thinking
Last Post: sltm1
Posted On: 6 Hours Ago
Replies: 12
Views: 694
0 This is gonna hurt.
Last Post: Ireeman
Posted On: 6 Hours Ago
Replies: 7,498
Views: 1,378,618
0 What do you think the wet weight of the Pan America will be?
Last Post: Toejam503
Posted On: 6 Hours Ago
Replies: 11
Views: 579
0 Food porn
Last Post: Graywolf
Posted On: 8 Hours Ago
Replies: 832
Views: 107,949
0 Broke fin on head.
Last Post: lynnx
Posted On: 8 Hours Ago
Replies: 11
Views: 433
0 1960 XLCH in the UK
Last Post: lynnx
Posted On: 8 Hours Ago
Replies: 78
Views: 3,837
0 Big bore stroker - the beginning of a 10-year long build
Last Post: brucstoudt
Posted On: 9 Hours Ago
Replies: 784
Views: 69,649
0 Carb + Rubbermount = Collector's Item?
Last Post: wedge
Posted On: 9 Hours Ago
Replies: 170
Views: 27,143
More...
Members Birthdays
ziggyhd1 (60), greven (58), bliynd (33)
Sponsored Links
Reply
 
Share Thread Tools Display Modes
  #21  
Old 3 Weeks Ago
Crash7557's Avatar
Crash7557 Crash7557 is offline
Know It All
 
Join Date: Jun 2014
Location: Long Island
Posts: 196
Sportster/Buell Model: XL1200N
Sportster/Buell Year: 2009
Other Motorcycle Model: HD Sprint SS-250
Other Motorcycle Year: 1967
Reputation: 303378
Crash7557 has a reputation beyond reputeCrash7557 has a reputation beyond reputeCrash7557 has a reputation beyond reputeCrash7557 has a reputation beyond reputeCrash7557 has a reputation beyond reputeCrash7557 has a reputation beyond reputeCrash7557 has a reputation beyond reputeCrash7557 has a reputation beyond reputeCrash7557 has a reputation beyond reputeCrash7557 has a reputation beyond reputeCrash7557 has a reputation beyond repute
Default

Ok i got the tool from JIMS. Drilled out the stud on bike. Ran tap through to clean the threads. When i look into the hole it seems the first half of the hole is perfect. The second deeper half looks to have no threads. What is strange to me is that the deeper half has no threads uniformly around the circumference. Looks like it was only threaded 1/2 inch deep. Rather than full depth of 1 inch.

The stud screws in all the way too with no resistance and bottoms out at full depth of 1" (HD Stud).

Should I loctite it to death with high temp loctite? I figure if the threads are screwed up I'd need to pop the head to fix it either way so may as well get some more ride time before i have to do that.

Anyone want to shed opinion?

Sent using Tapatalk
__________________
"I love the mechanicalness of it"-Indian Larry
Reply With Quote
  #22  
Old 3 Weeks Ago
Toejam503's Avatar
Toejam503 Toejam503 is offline
Subscribing Biker
 
Join Date: May 2010
Location: Dakota Territory
Posts: 532
Sportster/Buell Model: XL 1200 C
Sportster/Buell Year: 2006
Reputation: 499119
Toejam503 has a reputation beyond reputeToejam503 has a reputation beyond reputeToejam503 has a reputation beyond reputeToejam503 has a reputation beyond reputeToejam503 has a reputation beyond reputeToejam503 has a reputation beyond reputeToejam503 has a reputation beyond reputeToejam503 has a reputation beyond reputeToejam503 has a reputation beyond reputeToejam503 has a reputation beyond reputeToejam503 has a reputation beyond repute
Default

I wouldn't loctite it, the heat will seal the stud in there. That extra space behind the threads, IMO, is so you can adjust how far in or out you want the stud and leaves space for a heli-coil if the stud breaks (just an educated guess).
Reply With Quote
  #23  
Old 3 Weeks Ago
harley506d's Avatar
harley506d harley506d is offline
XL FORUM TEAM MEMBER
 
Join Date: May 2017
Location: Lubersac
Posts: 237
Sportster/Buell Model: 1200c
Sportster/Buell Year: 2005
Reputation: 205474
harley506d has a brilliant futureharley506d has a brilliant futureharley506d has a brilliant futureharley506d has a brilliant futureharley506d has a brilliant futureharley506d has a brilliant futureharley506d has a brilliant futureharley506d has a brilliant futureharley506d has a brilliant futureharley506d has a brilliant futureharley506d has a brilliant future
Default

Very interesting info on technical use of studs, you learn something new every day.

Has anyone got a spare cyl' head kicking around to see if this space at the back of the threads is normal?
__________________
"Procrastination is the thief of time"................90's Harley ad.
Reply With Quote
  #24  
Old 3 Weeks Ago
Graywolf's Avatar
Graywolf Graywolf is offline
XL FORUM LIFE MEMBER
 
Join Date: Dec 2009
Location: Shack in Florida swamp
Posts: 2,042
Sportster/Buell Model: XLH 1200
Sportster/Buell Year: 1998
Sportster/Buell Model #2: XL 883/1200 conversion
Sportster/Buell Year #2: 2001
Other Motorcycle Model: 2nd 01 XLC
Other Motorcycle Year: 2001
Reputation: 4604048
Graywolf has a reputation beyond reputeGraywolf has a reputation beyond reputeGraywolf has a reputation beyond reputeGraywolf has a reputation beyond reputeGraywolf has a reputation beyond reputeGraywolf has a reputation beyond reputeGraywolf has a reputation beyond reputeGraywolf has a reputation beyond reputeGraywolf has a reputation beyond reputeGraywolf has a reputation beyond reputeGraywolf has a reputation beyond repute
Default

Seems like the only thing stopping you from using the next size larger studs would be getting a wrench or socket on the nuts to tighten them, the way the exhaust flanges are constructed on a Harley. Has anyone every tried drilling and tapping the holes out to the next size that gives the threads a full bite. Seems to be plenty of meat in the head to go over-size on the holes. I never stripped any out, so it is just speculation. I have replaced bolts and studs in other equipment with the next next larger size. Using the drill and taps charts you could go to the next larger in either metric or SAE to get a good thread and it should solve the problem if the threads are damaged beyond any possibility of repairing them.

Using a special stud with the inner threads larger and the same stock outer might also be a possibility.
__________________
Graywolf
I used to be sane, but I am better now.
Reply With Quote
  #25  
Old 3 Weeks Ago
Turbo Sporty 48 Turbo Sporty 48 is offline
Master Custom Bike Builder
 
Join Date: Sep 2010
Posts: 3,310
Sportster/Buell Model: XL1200X Turbo 48
Sportster/Buell Year: 2011
Sportster/Buell Model #2: XL1200 Roadster
Sportster/Buell Year #2: 2008
Turbo Sporty 48 has disabled reputation
Default Interference Threads Hold The Exhaust Stud In Place

Quote:
Originally Posted by Graywolf View Post
Seems like the only thing stopping you from using the next size larger studs would be getting a wrench or socket on the nuts to tighten them, the way the exhaust flanges are constructed on a Harley. Has anyone every tried drilling and tapping the holes out to the next size that gives the threads a full bite. Seems to be plenty of meat in the head to go over-size on the holes. I never stripped any out, so it is just speculation. I have replaced bolts and studs in other equipment with the next next larger size. Using the drill and taps charts you could go to the next larger in either metric or SAE to get a good thread and it should solve the problem if the threads are damaged beyond any possibility of repairing them.

Using a special stud with the inner threads larger and the same stock outer might also be a possibility.
Harley's interference threads hold the stud in place not loctite.
When I buggered up the hole a threaded insert was installed. That way the stock studs would fit.
Suggest making changes only where necessary. Bigger studs could cause other problems like fitting exhaust flanges to the head.
Reply With Quote
  #26  
Old 3 Weeks Ago
Crash7557's Avatar
Crash7557 Crash7557 is offline
Know It All
 
Join Date: Jun 2014
Location: Long Island
Posts: 196
Sportster/Buell Model: XL1200N
Sportster/Buell Year: 2009
Other Motorcycle Model: HD Sprint SS-250
Other Motorcycle Year: 1967
Reputation: 303378
Crash7557 has a reputation beyond reputeCrash7557 has a reputation beyond reputeCrash7557 has a reputation beyond reputeCrash7557 has a reputation beyond reputeCrash7557 has a reputation beyond reputeCrash7557 has a reputation beyond reputeCrash7557 has a reputation beyond reputeCrash7557 has a reputation beyond reputeCrash7557 has a reputation beyond reputeCrash7557 has a reputation beyond reputeCrash7557 has a reputation beyond repute
Default

Quote:
Originally Posted by Turbo Sporty 48 View Post
Harley's interference threads hold the stud in place not loctite.
When I buggered up the hole a threaded insert was installed. That way the stock studs would fit.
Suggest making changes only where necessary. Bigger studs could cause other problems like fitting exhaust flanges to the head.
I wish to restate that when I attempted to install the new harley branded stud, the stud did not fight or 'Interfere' on its way all the way to the bottom out depth of 1". This is why I am considering the use of high temp loctite here for 2 reasons:
0
Firstly, to reduce the torque exerted on he aluminum threads (which clearly have been reduced by the drilling) by increasing the surface contact area with the loctite. Stressing the aluminum more evenly when torquing down the exhaust flange.

Secondly, my intention is to use an interference threaded nut on the stud. I have used one before to replace a lost exhaust nut on this bike and they don't require much torque to move and they set in place solidly. In fact the other stud on this cylinder was using that interference nut and it had not moved a degree and came off W/O any trouble. Using these as replacements will reduce the required torque for the exhaust flanges to stay in place.

Lastly, since the threads are apparently reduced anyway, it will likely require an insert installed no matter what. Anything I do will just be delaying the inevitable. If it works then it works. On the other hand if it does not work and worst case the threads strip out then it was getting new threads anyway. Nothing to lose as I see it.

The odds of it working with these conditions are in my favor and personally i do not view any of it as an inconvenience to wait on the insert. To me i see it as getting the most out of it before necessary repairs.

Like going out and burning up a set of tires you know you are going to replace in a couple of days.

Does anyone agree/disagree with this line of thought?

Sent using Tapatalk
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



Sponsored Links
All times are GMT +1. The time now is 07:04.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2018, vBulletin Solutions Inc.
XL Forum® - Linson Media LLC