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 Roadster - No Key Start
Last Post: exexpat93
Posted On: 16 Minutes Ago
Replies: 19
Views: 433
0 Cam question
Last Post: T. Clark
Posted On: 1 Hour Ago
Replies: 38
Views: 951
0 Keep & Kill
Last Post: wongjohnson
Posted On: 1 Hour Ago
Replies: 18,758
Views: 1,116,568
0 tappet/blocks fitment by year
Last Post: Ferrous Head
Posted On: 1 Hour Ago
Replies: 2
Views: 32
0 What did you do for your sporty Today?
Last Post: commando57
Posted On: 1 Hour Ago
Replies: 7,323
Views: 1,081,480
0 never mind
Last Post: IXL2Relax
Posted On: 3 Hours Ago
Replies: 200
Views: 28,433
0 Snippets
Last Post: Crusty
Posted On: 4 Hours Ago
Replies: 314
Views: 34,385
0 my sunday driver...
Last Post: 84rzv500r
Posted On: 4 Hours Ago
Replies: 32
Views: 5,305
0 mainshaft rollers size
Last Post: Gold Member
Posted On: 5 Hours Ago
Replies: 36
Views: 1,724
0 12/06/2020 Chicagoland Toys for Tots Parade
Last Post: sportsterpaul
Posted On: 5 Hours Ago
Replies: 1
Views: 64
0 What's your opinion on windshields?
Last Post: sportsterpaul
Posted On: 5 Hours Ago
Replies: 1,251
Views: 231,028
0 MS rollers way too tight
Last Post: Gold Member
Posted On: 6 Hours Ago
Replies: 6
Views: 238
0 Hot Chicks on Hot Bikes
Last Post: Toejam503
Posted On: 6 Hours Ago
Replies: 11,348
Views: 2,273,689
3 Garage, beam trolley and ideas
Last Post: bustert
Posted On: 6 Hours Ago
Replies: 21
Views: 687
0 What engine oil do you use?
Last Post: Steve9
Posted On: 7 Hours Ago
Replies: 476
Views: 104,395
0 Hottie of the day, no nudity.
Last Post: Stairman
Posted On: 8 Hours Ago
Replies: 24,086
Views: 2,462,566
0 Range With EFI 3.3 Gal Tank
Last Post: Mike1nw
Posted On: 9 Hours Ago
Replies: 97
Views: 66,698
0 Secondery Vin tag
Last Post: Ferrous Head
Posted On: 10 Hours Ago
Replies: 6
Views: 210
0 mainshaft retaining ring by sprocket
Last Post: Gold Member
Posted On: 10 Hours Ago
Replies: 4
Views: 273
0 81 parts
Last Post: ryder rick
Posted On: 10 Hours Ago
Replies: 1
Views: 128
0 Official XL Forum Random Image Thread (NO NUDITY!)
Last Post: Graywolf
Posted On: 11 Hours Ago
Replies: 48,873
Views: 7,920,590
0 Flywheel en play check 1974 Sportster
Last Post: Jaime1840
Posted On: 11 Hours Ago
Replies: 22
Views: 846
0 Installing valve stems 43157-83A
Last Post: LenC
Posted On: 12 Hours Ago
Replies: 4
Views: 107
0 ISO: Norcal Machine shop for Hole in Case
Last Post: BTD
Posted On: 13 Hours Ago
Replies: 15
Views: 824
0 Superlow bar dimensions?
Last Post: npaisnel
Posted On: 14 Hours Ago
Replies: 4
Views: 1,324
0 Please Help flanders says bars are almost what I have?
Last Post: npaisnel
Posted On: 14 Hours Ago
Replies: 16
Views: 2,850
3 Wtb, Wts, Wtt, Wtg (Evos)
Last Post: rocketmangb
Posted On: 15 Hours Ago
Replies: 19
Views: 82,810
0 Food porn
Last Post: Stairman
Posted On: 15 Hours Ago
Replies: 2,144
Views: 433,749
0 XR750 resurrecting
Last Post: mofosheee
Posted On: 16 Hours Ago
Replies: 28
Views: 1,544
0 Brake pedal clear Super Trapp 2-1?
Last Post: LenC
Posted On: 17 Hours Ago
Replies: 4
Views: 293
More...
Members Birthdays
Tags
ironhead engine noise

Reply
 
Share Thread Tools Display Modes
  #21  
Old 3 Days Ago
5mel42 5mel42 is offline
XL FORUM TEAM MEMBER
 
Join Date: Aug 2015
Location: Okanagan Valley, BC
Posts: 66
Sportster/Buell Model: 883/1250 SuperLow
Sportster/Buell Year: 2011
Sportster/Buell Model #2: 1200S, '14 883 SuperLow
Sportster/Buell Year #2: 1996
Other Motorcycle Model: Harley FXDF Fat Bob
Other Motorcycle Year: 2009
Reputation: 157583
5mel42 has a brilliant future5mel42 has a brilliant future5mel42 has a brilliant future5mel42 has a brilliant future5mel42 has a brilliant future5mel42 has a brilliant future5mel42 has a brilliant future5mel42 has a brilliant future5mel42 has a brilliant future5mel42 has a brilliant future5mel42 has a brilliant future
Default

Odd that the noise isn't rhythmic and in time with engine speed, as you mentioned initially.
Reply With Quote
  #22  
Old 3 Days Ago
Ferrous Head's Avatar
Ferrous Head Ferrous Head is offline
Blind Owl
 
Join Date: Jun 2009
Location: Sunshine Coast
Posts: 5,957
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

Many many years ago I remember starting up a Ducati I had just done a complete ground up rebuild on.
Had a dreadful rattle. Had me stumped for a little while.

Then, I found the loose screw sitting inside the air cleaner. Very thankful it hadn't got sucked into the engine.
__________________
"I know only too well the evil that I propose. But my inclinations get the better of me."
Reply With Quote
  #23  
Old 3 Days Ago
brucstoudt's Avatar
brucstoudt brucstoudt is offline
Senior Master Custom Bike Builder
 
Join Date: May 2010
Location: Pottstown PA.
Posts: 14,125
Sportster/Buell Model: xlch
Sportster/Buell Year: 1960
Reputation: 621719
brucstoudt has a reputation beyond reputebrucstoudt has a reputation beyond reputebrucstoudt has a reputation beyond reputebrucstoudt has a reputation beyond reputebrucstoudt has a reputation beyond reputebrucstoudt has a reputation beyond reputebrucstoudt has a reputation beyond reputebrucstoudt has a reputation beyond reputebrucstoudt has a reputation beyond reputebrucstoudt has a reputation beyond reputebrucstoudt has a reputation beyond repute
Default

Quote:
Originally Posted by andy2175m4 View Post
I just now checked the side play of the 4 rockers to their shafts:

front cylinder exhaust rocker arm sideplay = .002"
front cylinder intake rocker arm sideplay = .000"
rear cylinder intake rocker arm sideplay = .000"
rear cylinder exhaust rocker arm sideplay = .0025 - .003"
there is a spring on the left side of the rocker arm that keeps clearances slight.check your spring on the rear exhaust. some people building performance motors remove the spring and replace it with spacers.my rocker boxes are like that.
__________________
72 1000cc barrels and heads, s&s 41/2'' flywheels, sifton cams, s&s super B w/ zippers thunderjet w/yost powertube, andrews gears,and shafts, competition engineering kevlar wet or dry clutch, 72 oil pump, morris magneto w/auto advance and single fire module, cycle electric generator w/electronic regulator,73 cu.in.
Reply With Quote
  #24  
Old 3 Days Ago
Ferrous Head's Avatar
Ferrous Head Ferrous Head is offline
Blind Owl
 
Join Date: Jun 2009
Location: Sunshine Coast
Posts: 5,957
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

I would be shocked and stunned if that was a rocker arm problem. Shocked and stunned.
Reply With Quote
  #25  
Old 1 Day Ago
andy2175m4 andy2175m4 is offline
Biker
 
Join Date: Jan 2018
Location: in the garage
Posts: 28
Sportster/Buell Model: XLS
Sportster/Buell Year: 1979
Reputation: 1225
andy2175m4 has a spectacular aura aboutandy2175m4 has a spectacular aura aboutandy2175m4 has a spectacular aura aboutandy2175m4 has a spectacular aura aboutandy2175m4 has a spectacular aura aboutandy2175m4 has a spectacular aura aboutandy2175m4 has a spectacular aura aboutandy2175m4 has a spectacular aura aboutandy2175m4 has a spectacular aura about
Default

Regarding the mystery engine noise, I finally got the rockers and shafts into the lathe and did some accurate side play measurements with a dial indicator: (front to back)

Disregard previous post showing side play, that was a lazy setup, these are more accurate:

#1=.003"
#2=.002"
#3=.0037"
#4=.0015"

The .0037 play rocker was in the intake rear cylinder, which is where the noise was, I suspect this is the source of the noise, the spec is .002" side play max, so per the spec the rockers should be replaced.

So does that makes sense ? I did not accurately check the rocker side play before yesterday, they feel snug, but the dial indicator tells no tales.......
Reply With Quote
  #26  
Old 1 Day Ago
brucstoudt's Avatar
brucstoudt brucstoudt is offline
Senior Master Custom Bike Builder
 
Join Date: May 2010
Location: Pottstown PA.
Posts: 14,125
Sportster/Buell Model: xlch
Sportster/Buell Year: 1960
Reputation: 621719
brucstoudt has a reputation beyond reputebrucstoudt has a reputation beyond reputebrucstoudt has a reputation beyond reputebrucstoudt has a reputation beyond reputebrucstoudt has a reputation beyond reputebrucstoudt has a reputation beyond reputebrucstoudt has a reputation beyond reputebrucstoudt has a reputation beyond reputebrucstoudt has a reputation beyond reputebrucstoudt has a reputation beyond reputebrucstoudt has a reputation beyond repute
Default

have you seen post #23?
Reply With Quote
  #27  
Old 1 Day Ago
Ferrous Head's Avatar
Ferrous Head Ferrous Head is offline
Blind Owl
 
Join Date: Jun 2009
Location: Sunshine Coast
Posts: 5,957
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

I think what your trying to tell us is not "end play" (which is controlled by springs) but the "fit in shaft" and the book does call for 0.0025 clearance.

Again, I will be shocked and stunned if that is the source of your noise.

The noise is not constant. It comes and goes with change in revs.

That would indicate something running loose that doesn't have pressure on it at times. That's if the noise is in the engine and not something on the bike.

Primary chains do things like that/ Generator gears do things like that. Rockers arms won't unless you have the tappets so loose the push rod is about to fall out.

But look, it's your bike and if you want to re-bush and ream the rocker arm, go for it.

But to get the rocker off the rear head you had to pull the head anyway. So, you have done a lot of work already.

I think you should have done a little more investigation first.

If you have a rocker arm problem a screwdriver on the end of the rocker shaft will tell you for certain. The noise will be deafening at that point.
Reply With Quote
  #28  
Old 1 Day Ago
brucstoudt's Avatar
brucstoudt brucstoudt is offline
Senior Master Custom Bike Builder
 
Join Date: May 2010
Location: Pottstown PA.
Posts: 14,125
Sportster/Buell Model: xlch
Sportster/Buell Year: 1960
Reputation: 621719
brucstoudt has a reputation beyond reputebrucstoudt has a reputation beyond reputebrucstoudt has a reputation beyond reputebrucstoudt has a reputation beyond reputebrucstoudt has a reputation beyond reputebrucstoudt has a reputation beyond reputebrucstoudt has a reputation beyond reputebrucstoudt has a reputation beyond reputebrucstoudt has a reputation beyond reputebrucstoudt has a reputation beyond reputebrucstoudt has a reputation beyond repute
Default

thank you.fit in the shaft should be measured.the bore of the rocker shaft bushing and the rocker shaft o.d.will give you the clearance.i looked for a side play spec. in the fsm there is none.springs take up the clearance.
Reply With Quote
  #29  
Old 1 Day Ago
randy3934's Avatar
randy3934 randy3934 is offline
Senior Custom Bike Builder
 
Join Date: Dec 2011
Location: under a roof
Posts: 2,980
Sportster/Buell Model: xlh 1000 69 79 xlch
Sportster/Buell Year: 1977
Sportster/Buell Model #2: 80 FXE 82FLH 83FXR
Other Motorcycle Model: 78FLH 79xlch 96xl 79xlh
Reputation: 152122
randy3934 has a brilliant futurerandy3934 has a brilliant futurerandy3934 has a brilliant futurerandy3934 has a brilliant futurerandy3934 has a brilliant futurerandy3934 has a brilliant futurerandy3934 has a brilliant futurerandy3934 has a brilliant futurerandy3934 has a brilliant futurerandy3934 has a brilliant futurerandy3934 has a brilliant future
Default

I've installed new bushings in rockers that were totally toasted, engine was torn down for smoking low compression excessive oil consumption, engine still ran quietly.
__________________
I'm not a complete idiot, some parts are missing. not enough room to list all my harleys.
Reply With Quote
  #30  
Old 1 Day Ago
Ferrous Head's Avatar
Ferrous Head Ferrous Head is offline
Blind Owl
 
Join Date: Jun 2009
Location: Sunshine Coast
Posts: 5,957
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

Ok. So engine was not noisy but you rebuilt the top end because the bores were worn.

And during the process you re bushed the rocker arms.

Now the engine has a tinkling noise that sounds more like well, ..... a loose primary chain to 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



All times are GMT +1. The time now is 08:41.


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