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 What's your opinion on windshields?
Last Post: sportsterpaul
Posted On: 6 Minutes Ago
Replies: 1,251
Views: 230,227
0 Snippets
Last Post: sportsterpaul
Posted On: 11 Minutes Ago
Replies: 313
Views: 34,353
0 Keep & Kill
Last Post: dodgetrucken
Posted On: 37 Minutes Ago
Replies: 18,752
Views: 1,116,491
0 my sunday driver...
Last Post: Old Junk
Posted On: 49 Minutes Ago
Replies: 31
Views: 5,262
0 MS rollers way too tight
Last Post: Gold Member
Posted On: 1 Hour Ago
Replies: 6
Views: 143
0 Hot Chicks on Hot Bikes
Last Post: Toejam503
Posted On: 1 Hour Ago
Replies: 11,348
Views: 2,273,567
0 What did you do for your sporty Today?
Last Post: ChinCactus
Posted On: 1 Hour Ago
Replies: 7,318
Views: 1,081,366
3 Garage, beam trolley and ideas
Last Post: bustert
Posted On: 1 Hour Ago
Replies: 21
Views: 673
0 What engine oil do you use?
Last Post: Steve9
Posted On: 1 Hour Ago
Replies: 476
Views: 104,387
0 Cam question
Last Post: Heff
Posted On: 2 Hours Ago
Replies: 37
Views: 893
0 Hottie of the day, no nudity.
Last Post: Stairman
Posted On: 3 Hours Ago
Replies: 24,086
Views: 2,462,336
0 Range With EFI 3.3 Gal Tank
Last Post: Mike1nw
Posted On: 3 Hours Ago
Replies: 97
Views: 66,692
0 Secondery Vin tag
Last Post: Ferrous Head
Posted On: 5 Hours Ago
Replies: 6
Views: 185
0 mainshaft retaining ring by sprocket
Last Post: Gold Member
Posted On: 5 Hours Ago
Replies: 4
Views: 220
0 81 parts
Last Post: ryder rick
Posted On: 5 Hours Ago
Replies: 1
Views: 94
0 Official XL Forum Random Image Thread (NO NUDITY!)
Last Post: Graywolf
Posted On: 6 Hours Ago
Replies: 48,873
Views: 7,920,377
0 Flywheel en play check 1974 Sportster
Last Post: Jaime1840
Posted On: 6 Hours Ago
Replies: 22
Views: 823
0 Installing valve stems 43157-83A
Last Post: LenC
Posted On: 6 Hours Ago
Replies: 4
Views: 88
0 ISO: Norcal Machine shop for Hole in Case
Last Post: BTD
Posted On: 7 Hours Ago
Replies: 15
Views: 797
0 Superlow bar dimensions?
Last Post: npaisnel
Posted On: 9 Hours Ago
Replies: 4
Views: 1,319
0 Please Help flanders says bars are almost what I have?
Last Post: npaisnel
Posted On: 9 Hours Ago
Replies: 16
Views: 2,769
3 Wtb, Wts, Wtt, Wtg (Evos)
Last Post: rocketmangb
Posted On: 9 Hours Ago
Replies: 19
Views: 82,794
0 Food porn
Last Post: Stairman
Posted On: 10 Hours Ago
Replies: 2,144
Views: 433,199
0 XR750 resurrecting
Last Post: mofosheee
Posted On: 11 Hours Ago
Replies: 28
Views: 1,529
0 Brake pedal clear Super Trapp 2-1?
Last Post: LenC
Posted On: 12 Hours Ago
Replies: 4
Views: 265
0 What kind of car lives with your HD?
Last Post: dodgetrucken
Posted On: 12 Hours Ago
Replies: 584
Views: 92,636
0 12/06/2020 Chicagoland Toys for Tots Parade
Last Post: jzink0883
Posted On: 12 Hours Ago
Replies: 0
Views: 43
0 Bike Beast
Last Post: Ireeman
Posted On: 13 Hours Ago
Replies: 12
Views: 451
0 Old new guy
Last Post: Stairman
Posted On: 14 Hours Ago
Replies: 12
Views: 522
0 2009 XL1200N, want to install factory dual guages from 01, need help
Last Post: rocketmangb
Posted On: 16 Hours Ago
Replies: 31
Views: 1,257
More...
Members Birthdays
Reply
 
Share Thread Tools Display Modes
  #1  
Old 6th November 2019
stinkfoot's Avatar
stinkfoot stinkfoot is offline
Biker
 
Join Date: Jan 2008
Posts: 84
Sportster/Buell Model: xl1200
Sportster/Buell Year: 1988
Reputation: 148
stinkfoot is on a distinguished roadstinkfoot is on a distinguished road
Default 1964 Ironhead Magneto Timing with high compression pistons

Hi there

Looking for some advice on ignition timing.

The bike has been rebored and is now running 10.5:1 pistons or there about.

Timing is set as standard but it is kicking like an angry mule and pre igniting on the manifold side.

Running Harley Mag with Hunt armature and coil - have and advance unit on it which is supposed to retard the ignition a bit.

Anyway need advice as my foot is sore...

Thanks

SF
Reply With Quote
  #2  
Old 7th November 2019
72 Ironhead XLH's Avatar
72 Ironhead XLH 72 Ironhead XLH is offline
Senior Master Custom Bike Builder
 
Join Date: May 2005
Location: NJ
Posts: 5,926
Sportster/Buell Model: XLH
Sportster/Buell Year: 72
72 Ironhead XLH has disabled reputation
Default

retard the timing a bit more
Reply With Quote
  #3  
Old 7th November 2019
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

it's been said for the fixed mag bunch: "time them to start easy, or time them to run well, but you can't have both"...

is this the one?
https://shop.morrismagneto.com/products/mra-r


another option is to hold down the kill button until you are close to the bottom swing of your kick, then let the button go. once you reach the end of the kick stroke where it hard stops, there is a cam that retracts the ratchet gear, and that will prevent you from getting mule kicked too.
__________________
"when you don't know where you're going, any road'll take you there"
Reply With Quote
  #4  
Old 7th November 2019
ryder rick's Avatar
ryder rick ryder rick is offline
Senior Master Custom Bike Builder
 
Join Date: Jun 2008
Location: Cornelius, OR
Posts: 9,409
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

YES - hold the kicker all the way down until the motor stops turning!!! :^)
__________________
Ryder Rick "I know right from wrong, but sometimes, wrong feels right"
Reply With Quote
  #5  
Old 7th November 2019
11B40 11B40 is offline
XL FORUM TEAM MEMBER
 
Join Date: Dec 2008
Posts: 993
Reputation: 107455
11B40 has much to be proud of11B40 has much to be proud of11B40 has much to be proud of11B40 has much to be proud of11B40 has much to be proud of11B40 has much to be proud of11B40 has much to be proud of11B40 has much to be proud of11B40 has much to be proud of11B40 has much to be proud of11B40 has much to be proud of
Default

Be aware that retarding the spark too much make an engine very hot. Read: damage hot.
Great idle, hole in piston.

Starting /ratchet problems are usually directly related to the ratchet bushing. It will be so worn that the gear starts to tweek to one side and some of the teeth are not getting a good purchase on the clutch basket. This is a wear item, we used to change that bushing every couple of years. The bushing must be machined to proper fit on the ratchet gear. You will not believe how nice they kick with a brand new bushing.

Last edited by 11B40; 7th November 2019 at 20:43..
Reply With Quote
  #6  
Old 8th November 2019
ryder rick's Avatar
ryder rick ryder rick is offline
Senior Master Custom Bike Builder
 
Join Date: Jun 2008
Location: Cornelius, OR
Posts: 9,409
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

And a sleeve that doesn't look like an hour glass! :^)
Reply With Quote
  #7  
Old 9th November 2019
stinkfoot's Avatar
stinkfoot stinkfoot is offline
Biker
 
Join Date: Jan 2008
Posts: 84
Sportster/Buell Model: xl1200
Sportster/Buell Year: 1988
Reputation: 148
stinkfoot is on a distinguished roadstinkfoot is on a distinguished road
Default

Quote:
Originally Posted by doodah man View Post
it's been said for the fixed mag bunch: "time them to start easy, or time them to run well, but you can't have both"...

is this the one?
https://shop.morrismagneto.com/products/mra-r


another option is to hold down the kill button until you are close to the bottom swing of your kick, then let the button go. once you reach the end of the kick stroke where it hard stops, there is a cam that retracts the ratchet gear, and that will prevent you from getting mule kicked too.

Hi - yes that's the unit from Hunt..

I'll have a think about the kill switch idea - at the moment the bike only has a kill on the mag.. Sounds a little like Russian Roulette when to take the finger off the trigger..
Reply With Quote
  #8  
Old 9th November 2019
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

You just want some rotating force in the flywheel before you allow the ignition to go hot so that it’s past the point where it can kick back when it does fire. No kill switch on the handle bar? Are they the original bars? Is there an easy way for you to fit up a switch on them?
Reply With Quote
  #9  
Old 13th November 2019
stinkfoot's Avatar
stinkfoot stinkfoot is offline
Biker
 
Join Date: Jan 2008
Posts: 84
Sportster/Buell Model: xl1200
Sportster/Buell Year: 1988
Reputation: 148
stinkfoot is on a distinguished roadstinkfoot is on a distinguished road
Default

Okay - so still not running... had anyone got a good link to, or foolproof method of timing up the magneto on an XLCH?

Thx

Richard
Reply With Quote
  #10  
Old 13th November 2019
IronMick's Avatar
IronMick IronMick is offline
Rider Of The Iron Steed
 
Join Date: Dec 2003
Location: London, ON Canada
Posts: 32,490
Sportster/Buell Model: XLH
Sportster/Buell Year: 1978
Reputation: 1280341
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

Ironhead Setting Timing, 1964 & Earlier Mag
http://xlforum.net/forums/showthread.php?t=634523
__________________
Mick
IronHead Forever!

Visit Mick's WebSite
[And Check Out My Autobiog]
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 03:28.


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