The Sportster and Buell Motorcycle Forum - The XLFORUM®
 

Go Back   The Sportster and Buell Motorcycle Forum - The XLFORUM® > BUELL MOTORCYCLE FORUM > Buell Motorcycle Top End
XLF Blogs XLF Arcade XLF Disclaimer/Privacy Statement/Terms Of Use

Active Threads
0 never mind
Last Post: IXL2Relax
Posted On: 34 Minutes Ago
Replies: 71
Views: 3,607
0 Official XL Forum Random Image Thread (NO NUDITY!)
Last Post: Graywolf
Posted On: 52 Minutes Ago
Replies: 45,682
Views: 7,220,149
0 Hottie of the day, no nudity.
Last Post: Stairman
Posted On: 1 Hour Ago
Replies: 15,335
Views: 1,472,635
0 Keep & Kill
Last Post: Crusty
Posted On: 2 Hours Ago
Replies: 14,596
Views: 815,589
0 Hydraulic Lift For XL
Last Post: harley506d
Posted On: 3 Hours Ago
Replies: 5
Views: 172
0 Crusty's Travels
Last Post: SonWon
Posted On: 3 Hours Ago
Replies: 2,652
Views: 358,460
0 question for our machinists
Last Post: yoshi
Posted On: 4 Hours Ago
Replies: 8
Views: 259
0 Sportster Crankcase Pressure / Engine Breathing / Wetsumping and Mods
Last Post: Hippysmack
Posted On: 5 Hours Ago
Replies: 884
Views: 40,139
12 Lets see the "C's" XLC's that is. Pics Please!
Last Post: glbsportster
Posted On: 5 Hours Ago
Replies: 1,212
Views: 448,678
0 supply oil line seeping
Last Post: Hippysmack
Posted On: 5 Hours Ago
Replies: 4
Views: 153
0 Fact or fiction?
Last Post: ryder rick
Posted On: 6 Hours Ago
Replies: 18
Views: 612
0 Cometic Air Cleaner Gasket?
Last Post: sml1226
Posted On: 6 Hours Ago
Replies: 1
Views: 41
0 Fork Upgrade to 39mm. Is This Possible/Wise
Last Post: BKB
Posted On: 7 Hours Ago
Replies: 7
Views: 152
0 1982 XLH 1000 With 23 Original Miles
Last Post: ryder rick
Posted On: 7 Hours Ago
Replies: 8
Views: 375
0 Very Loud Backfiring (among other things)
Last Post: Nacs
Posted On: 9 Hours Ago
Replies: 15
Views: 398
0 Wanna build a cheap big bore stroker ?
Last Post: Maxeffort
Posted On: 10 Hours Ago
Replies: 35
Views: 1,280
0 Pre-rubber stock exhaust to '08 heads and cylinders
Last Post: olrider
Posted On: 11 Hours Ago
Replies: 7
Views: 172
0 Interview of My Expieriences Riding in the Iron Butt Rally
Last Post: sportsterpaul
Posted On: 11 Hours Ago
Replies: 5
Views: 169
5 Crankcase Oil Drain Plug
Last Post: Hippysmack
Posted On: 12 Hours Ago
Replies: 13
Views: 386
0 Winter riding clothes
Last Post: sportsterpaul
Posted On: 12 Hours Ago
Replies: 34
Views: 3,200
0 Question on priming motor for kickstart
Last Post: Iron Mike
Posted On: 12 Hours Ago
Replies: 9
Views: 484
0 Charging cell phone when camping?
Last Post: kobra50
Posted On: 12 Hours Ago
Replies: 68
Views: 19,741
5 Your worst car?
Last Post: Nibelungen
Posted On: 12 Hours Ago
Replies: 299
Views: 34,136
0 Ride Report w/ 100's of Photos & Video - 8 States, 2 Countries & 2 Big Surprises
Last Post: DK Custom
Posted On: 12 Hours Ago
Replies: 28
Views: 788
3 Wtb, Wts, Wtt, Wtg (Ironhead)
Last Post: dodgetrucken
Posted On: 13 Hours Ago
Replies: 65
Views: 241,611
5 73 Timing w/Strobe & 77 air/fuel screw
Last Post: 4th of July
Posted On: 13 Hours Ago
Replies: 16
Views: 580
0 Speedometer Interchangeability Between Different Generations.
Last Post: 619Sporty
Posted On: 13 Hours Ago
Replies: 3
Views: 113
0 A.I.M. Clutch set up
Last Post: cycowrencher
Posted On: 13 Hours Ago
Replies: 193
Views: 26,230
0 Transformer XR1200
Last Post: jkinkade
Posted On: 14 Hours Ago
Replies: 171
Views: 13,637
0 What engine oil do you use?
Last Post: Tomcatt
Posted On: 14 Hours Ago
Replies: 472
Views: 95,751
More...
Sponsored Links
Reply
 
Share Thread Tools Display Modes
  #1  
Old 17th October 2016
dsmithjr_1960 dsmithjr_1960 is offline
Biker
 
Join Date: Oct 2015
Location: Menifee
Posts: 2
Sportster/Buell Model: Buell Thunderbolt
Sportster/Buell Year: 1998
Other Motorcycle Model: Harley Ultra Classic PE
Other Motorcycle Year: 2007
Reputation: 10
dsmithjr_1960 is an unknown quantity at this point
Default 98 thunderbolt Rockers leaking

Hi i bought a blown up thunderbolt to get familiar with the Sporty engine I rebuilt it and it moves pretty good. However I have a constant leak from the Rockers both upper and mid, I have tried everything except a silicone bead around the surfaces. I replaced gasket 3 times last one I super glued it as I was told from a few people? Question I am now thinking is the heads may not be venting? not sure the year of the heads a buddy bought for me but did have to change the front mount bolt from 7/16 to 3/8? They looked the same but anyone know how to figure out if the head are just not venting?
Reply With Quote
  #2  
Old 6th December 2016
rejeanprimeau's Avatar
rejeanprimeau rejeanprimeau is offline
XL FORUM TEAM MEMBER
 
Join Date: Jun 2011
Location: On a farm
Posts: 6,121
Sportster/Buell Model: XL77.2R
Sportster/Buell Year: 2006
Reputation: 2344938
rejeanprimeau has a reputation beyond reputerejeanprimeau has a reputation beyond reputerejeanprimeau has a reputation beyond reputerejeanprimeau has a reputation beyond reputerejeanprimeau has a reputation beyond reputerejeanprimeau has a reputation beyond reputerejeanprimeau has a reputation beyond reputerejeanprimeau has a reputation beyond reputerejeanprimeau has a reputation beyond reputerejeanprimeau has a reputation beyond reputerejeanprimeau has a reputation beyond repute
Default

Buell vent by the cover, your's by the two umbrella, one on each head, the side over the carb?
Reply With Quote
  #3  
Old 6th December 2016
aswracing's Avatar
aswracing aswracing is offline
A Million Facts & Figures
 
Join Date: Jan 2005
Location: Famous Potatoes
Posts: 10,097
Sportster/Buell Model: XL883
Sportster/Buell Year: 2007
Sportster/Buell Model #2: Buell Cyclone
Sportster/Buell Year #2: 1999
Reputation: 2940267
aswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond reputeaswracing has a reputation beyond repute
Default

Quote:
Originally Posted by dsmithjr_1960 View Post
Hi i bought a blown up thunderbolt to get familiar with the Sporty engine I rebuilt it and it moves pretty good. However I have a constant leak from the Rockers both upper and mid, I have tried everything except a silicone bead around the surfaces. I replaced gasket 3 times last one I super glued it as I was told from a few people? Question I am now thinking is the heads may not be venting? not sure the year of the heads a buddy bought for me but did have to change the front mount bolt from 7/16 to 3/8? They looked the same but anyone know how to figure out if the head are just not venting?
If you have 4-speed heads (86-90) then you are correct, those have no facility for a breather and therefore if installed on a 5-speed (91+), you'd have a sealed motor that would soon be leaking past gaskets. You'd also have pushrod rub issues, because the pushrod angles are different and the holes where the pushrods pass through the heads are in a different place.

Easy to tell. Are the two carb mount/breather bolts 1/2-13 thread, with hollow breather bolts? Or are they little 5/16-18 bolts?
__________________
Click Here to Contact Me

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 13:12.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
XL Forum® - Linson Media LLC