The Sportster and Buell Motorcycle Forum Motor Stage  

Go Back   The Sportster and Buell Motorcycle Forum > SPORTSTER MOTORCYCLE ZONE > Sportster Motorcycle Motor / Engine > Sportster Motorcycle Motor - Top End
XLF Gallery XLF Classifieds XLF Blogs XLF Shout XLF Arcade XLF Disclaimer/Privacy Statement/Terms Of Use

Sportster Motorcycle Motor - Top End Discuss Sportster Motorcycle Top End issues. Rockerboxes, Valves, Cylinders, Pistons, Rings, Lift Rods, etc...

Members Birthdays
Motor Stage
Motor Stage
Foxcreek Leather
NHRS Performance

Speedway Instruments
Reply
 
Share Thread Tools Display Modes
  #21  
Old 19th September 2006
SamC's Avatar
SamC SamC is offline
Greasemonkey
 
Join Date: Aug 2006
Posts: 121
Sportster/Buell Model: XL883, for sale cheap!
Sportster/Buell Year: 2002
Other Motorcycle Model: Ural Deco Classic
Other Motorcycle Year: 2000
Reputation: 203
SamC is on a distinguished roadSamC is on a distinguished roadSamC is on a distinguished road
Default

I just stumbled onto this thread (slow reader) and I notice something nobody's touched on; relaxing the stresses in the castings, forgings, etc. Freshly-made pieces have locked-in stresses that will eventually normalize. If they're heated too quickly and too much, the stresses will deform the piece. Mototune totally ignores this. Fresh parts will turn into pretzels if they're treated like he says.

Years ago, Gordon Jennings noted that when he was messing with piston shapes on two-strokes by welding on the domes, a used piston would stand it OK but a new one would generally deform into uselessness. The difference was that the used pieces weren't internally stressed, so they didn't deform when heated by the welding.

I'm not a professional engine builder, I'm in the once-in-a-while category. I used to be a machinist and I'm familiar with normalizing parts. Seeing something like the "beat it hard and it'll be fast" school of break-in makes me glad he's not building my engine.
Reply With Quote
  #22  
Old 19th September 2006
shotgun46's Avatar
shotgun46 shotgun46 is online now
XL FORUM TEAM MEMBER
 
Join Date: Dec 2005
Location: Portland Tn
Posts: 10,351
Sportster/Buell Model: 1998 S= Superior Model
Sportster/Buell Year: 1998
Reputation: 279410
shotgun46 has a reputation beyond reputeshotgun46 has a reputation beyond reputeshotgun46 has a reputation beyond reputeshotgun46 has a reputation beyond reputeshotgun46 has a reputation beyond reputeshotgun46 has a reputation beyond reputeshotgun46 has a reputation beyond reputeshotgun46 has a reputation beyond reputeshotgun46 has a reputation beyond reputeshotgun46 has a reputation beyond reputeshotgun46 has a reputation beyond repute
Default

so tell me what is heat cycle your motor ?????
__________________
Sportsters Rule !
Reply With Quote
  #23  
Old 20th September 2006
Albie1200's Avatar
Albie1200 Albie1200 is offline
Senior Chief Know It All 1st Class
 
Join Date: Nov 2004
Location: Costa Mesa, CA
Posts: 1,103
Sportster/Buell Model: 1200 Custom
Sportster/Buell Year: 1998
Reputation: 617
Albie1200 will become famous soon enoughAlbie1200 will become famous soon enoughAlbie1200 will become famous soon enoughAlbie1200 will become famous soon enoughAlbie1200 will become famous soon enoughAlbie1200 will become famous soon enough
Default

Very interesting information here.

My Dad is getting ready to get a 07 wide glide or softtail custom. What should I tell him to do for the break-in? He lives about 15 miles from the dealer that he would buy from. Not a huge distance, but enough to bring the motor to full operating tempature. Should we go down first thing in the morning with the intention of spending a good part of the day going through the first steps in the S&S proceedure that Stevo recommends?

It would look kinda funny sitting there after the purchase(not to mention a patience tester) starting it for a few minutes and shutting it down to cool completly. If it will produce the most power and least oil comsuption I will push him to try it, as I think it is worth it.

Question is: Do you guys with the best experience think it is worth it? or do you have any other ideas?
Reply With Quote
  #24  
Old 20th September 2006
stevo's Avatar
stevo stevo is offline
Senior Master Custom Bike Builder
 
Join Date: Nov 2004
Location: the tropical north of Australia
Posts: 6,535
Sportster/Buell Model: 11 second 1200S
Sportster/Buell Year: '98
Other Motorcycle Model: about a dozen others.....
Reputation: 2595
stevo is a jewel in the roughstevo is a jewel in the roughstevo is a jewel in the roughstevo is a jewel in the roughstevo is a jewel in the roughstevo is a jewel in the roughstevo is a jewel in the roughstevo is a jewel in the roughstevo is a jewel in the roughstevo is a jewel in the roughstevo is a jewel in the rough
Default

That's how I do it when I rebuild a motor...



I only ran it for a few seconds... then a minute or so ... then rode around the block and bedded the rings in when I was at the dealership...

The S&S break in is the ideal way.... and babying the motor is the opposite end of the spectrum...

Basicly run it medium/hard for short busts as heat is the enemy... then let those bursts get longer

ya don't want things to expand and distort that much that ya break the oil film....

and ya gotta take the high points off left from machining..
__________________
Havin a few beers in the shed with my mates.
Reply With Quote
  #25  
Old 21st September 2006
Albie1200's Avatar
Albie1200 Albie1200 is offline
Senior Chief Know It All 1st Class
 
Join Date: Nov 2004
Location: Costa Mesa, CA
Posts: 1,103
Sportster/Buell Model: 1200 Custom
Sportster/Buell Year: 1998
Reputation: 617
Albie1200 will become famous soon enoughAlbie1200 will become famous soon enoughAlbie1200 will become famous soon enoughAlbie1200 will become famous soon enoughAlbie1200 will become famous soon enoughAlbie1200 will become famous soon enough
Default

Thanks Stevo!!
Reply With Quote
Know Thy Hog

  #26  
Old 6th December 2006
blazer95's Avatar
blazer95 blazer95 is offline
Master Mechanic
 
Join Date: Jun 2006
Location: Dale City
Posts: 288
Sportster/Buell Model: XL1200C
Sportster/Buell Year: 2001
Reputation: 209
blazer95 is on a distinguished roadblazer95 is on a distinguished roadblazer95 is on a distinguished road
Default

What about an 2001 XL1200c that is spitting oil out the air breathe, bought it with 3,112 miles now has 10,000 miles ???
__________________
Nam Vet And Harley Rider

Last edited by blazer95; 6th December 2006 at 02:40..
Reply With Quote
  #27  
Old 29th January 2007
sportymike02's Avatar
sportymike02 sportymike02 is offline
XL FORUM TEAM MEMBER
 
Join Date: Apr 2006
Location: in a house in central NJ
Posts: 770
Sportster/Buell Model: 1200c
Sportster/Buell Year: 2002
Sportster/Buell Model #2: XL - Sold
Sportster/Buell Year #2: 1979
Reputation: 337476
sportymike02 has a reputation beyond reputesportymike02 has a reputation beyond reputesportymike02 has a reputation beyond reputesportymike02 has a reputation beyond reputesportymike02 has a reputation beyond reputesportymike02 has a reputation beyond reputesportymike02 has a reputation beyond reputesportymike02 has a reputation beyond reputesportymike02 has a reputation beyond reputesportymike02 has a reputation beyond reputesportymike02 has a reputation beyond repute
Default oil coming from the air cleaner

Quote:
Originally Posted by blazer95 View Post
What about an 2001 XL1200c that is spitting oil out the air breathe, bought it with 3,112 miles now has 10,000 miles ???
on a sporty?? no way!

unless its more than a few drops, thats normal. you can install a breather or get used to it. welcome to the oily right leg club of sportster owners!

J&P Cycles part# 4000330 $30 or if you are handy you can make your own
keep the sun in your face & the shiny side up
Reply With Quote
  #28  
Old 30th January 2007
blazer95's Avatar
blazer95 blazer95 is offline
Master Mechanic
 
Join Date: Jun 2006
Location: Dale City
Posts: 288
Sportster/Buell Model: XL1200C
Sportster/Buell Year: 2001
Reputation: 209
blazer95 is on a distinguished roadblazer95 is on a distinguished roadblazer95 is on a distinguished road
Default

thanks i will have to get used to then i still love my sporty
Reply With Quote
  #29  
Old 30th January 2007
Mattbastard's Avatar
Mattbastard Mattbastard is offline
Bike Builder
 
Join Date: Jul 2005
Location: Sheboygan, WI
Posts: 1,869
Sportster/Buell Model: FXR
Sportster/Buell Year: 1994
Reputation: 12175
Mattbastard is a glorious beacon of lightMattbastard is a glorious beacon of lightMattbastard is a glorious beacon of lightMattbastard is a glorious beacon of lightMattbastard is a glorious beacon of lightMattbastard is a glorious beacon of lightMattbastard is a glorious beacon of lightMattbastard is a glorious beacon of lightMattbastard is a glorious beacon of lightMattbastard is a glorious beacon of lightMattbastard is a glorious beacon of light
Default

This is all great information for when I re-assemble my converted engine this spring.
Reply With Quote
  #30  
Old 30th January 2007
robert's Avatar
robert robert is offline
XL FORUM TEAM MEMBER
 
Join Date: Mar 2006
Posts: 531
Sportster/Buell Model: xl883c
Sportster/Buell Year: 2003
Reputation: 1371
robert has a spectacular aura aboutrobert has a spectacular aura aboutrobert has a spectacular aura aboutrobert has a spectacular aura aboutrobert has a spectacular aura aboutrobert has a spectacular aura aboutrobert has a spectacular aura aboutrobert has a spectacular aura aboutrobert has a spectacular aura aboutrobert has a spectacular aura about
Default

I just learned more from this thread in ten minutes than I'll learn the rest of the day! Hey, now I can go back to bed.
__________________
Pretty Boy Robert of the Hungry Horses MC
Reply With Quote
Know Thy Hog

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


Custom Search

All times are GMT +1. The time now is 17:48.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
XL Forum - Linson Media LLC