The Sportster and Buell Motorcycle Forum - The XLFORUM®
 

Go Back   The Sportster and Buell Motorcycle Forum - The XLFORUM® > SPORTSTER MOTORCYCLE FORUM > Sportster Motorcycle Motor / Engine > Sportster Motorcycle Motor - Top End
XLF Blogs 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...

Active Threads
0 Vibration During Acceleration
Last Post: Nrg2brn
Posted On: 41 Minutes Ago
Replies: 22
Views: 1,103
0 Vote for Most Sought After Sportster
Last Post: longride
Posted On: 50 Minutes Ago
Replies: 324
Views: 65,994
0 Big Bore '03 883R :)
Last Post: jkinkade
Posted On: 56 Minutes Ago
Replies: 20
Views: 651
0 Hello from NE Washington state.
Last Post: Dustpan63
Posted On: 59 Minutes Ago
Replies: 15
Views: 343
5 Oil pump pressure
Last Post: Hippysmack
Posted On: 1 Hour Ago
Replies: 1
Views: 25
0 How many helmets?
Last Post: clif02
Posted On: 1 Hour Ago
Replies: 200
Views: 28,141
0 How many miles are on your sporty?
Last Post: vagrant318
Posted On: 1 Hour Ago
Replies: 1,152
Views: 267,977
0 1979 XLH restore or not?
Last Post: Bstrdbike
Posted On: 1 Hour Ago
Replies: 31
Views: 1,626
0 Early Sportster XLCH 900 Dyno Run
Last Post: cazz1000
Posted On: 1 Hour Ago
Replies: 97
Views: 25,611
0 how many run baffles, run open, or just run stock
Last Post: Toejam503
Posted On: 1 Hour Ago
Replies: 382
Views: 78,297
5 1200 or 883
Last Post: Jarlaxle
Posted On: 1 Hour Ago
Replies: 1,014
Views: 304,333
0 Average age of the Ironhead forum users
Last Post: 1977iron
Posted On: 2 Hours Ago
Replies: 432
Views: 74,062
0 What Sort Of Sporty Have You Got?
Last Post: hammer6315
Posted On: 2 Hours Ago
Replies: 1,065
Views: 283,427
0 Bushing alignment
Last Post: Hippysmack
Posted On: 2 Hours Ago
Replies: 43
Views: 1,330
0 What oil temp do you run
Last Post: JKKO
Posted On: 2 Hours Ago
Replies: 99
Views: 18,689
0 Who's still riding???
Last Post: 1977iron
Posted On: 2 Hours Ago
Replies: 154
Views: 13,102
0 In Tank Oil Filter?
Last Post: Coz
Posted On: 2 Hours Ago
Replies: 11
Views: 341
0 Rocker Box Bolts & Torque
Last Post: Hippysmack
Posted On: 2 Hours Ago
Replies: 22
Views: 831
0 Official XL Forum Random Image Thread (NO NUDITY!)
Last Post: hammer6315
Posted On: 2 Hours Ago
Replies: 42,474
Views: 6,586,239
9 weird sound coming from left side ?
Last Post: htown16
Posted On: 2 Hours Ago
Replies: 7
Views: 180
0 What's your helmet?
Last Post: Lone Rider
Posted On: 3 Hours Ago
Replies: 83
Views: 6,461
0 The O-FISH-ALL Red Sportster Thread
Last Post: Lone Rider
Posted On: 3 Hours Ago
Replies: 314
Views: 90,706
0 Curious question (Wheelies)
Last Post: spitfirechopper
Posted On: 4 Hours Ago
Replies: 9
Views: 327
0 What did you do for your sporty Today?
Last Post: Lone Rider
Posted On: 4 Hours Ago
Replies: 5,626
Views: 665,697
0 Celebrating Sportsterpedia's Third Anniversary
Last Post: Hippysmack
Posted On: 4 Hours Ago
Replies: 8
Views: 246
0 Lets see your off season builds
Last Post: madnss
Posted On: 4 Hours Ago
Replies: 1,199
Views: 132,073
0 Possible exhaust or intake leak...or something else.
Last Post: maverick31210
Posted On: 4 Hours Ago
Replies: 4
Views: 69
0 Clutch Spring plate poll
Last Post: bimbo
Posted On: 5 Hours Ago
Replies: 283
Views: 50,550
0 Black Bike Bible
Last Post: Beelzeboss
Posted On: 5 Hours Ago
Replies: 2,529
Views: 1,159,195
0 Stabliser Tie-link 16232-04
Last Post: Folkie
Posted On: 5 Hours Ago
Replies: 24
Views: 465
More...
Members Birthdays
hillclimber (69), burtondl2 (51), Cet (49), hagar71 (48), ShaneWolfe (47), grizdiesel (42), Confused89 (34), RAIDER0372 (33), spamer80 (33), svwannabe
Sponsored Links
Reply
 
Share Thread Tools Display Modes
  #1  
Old 9th August 2011
bitpusher bitpusher is offline
outside the box racing
 
Join Date: Jan 2011
Location: Phoenix, Az
Posts: 4,330
Sportster/Buell Model: Turbo 1350 XLSR
Sportster/Buell Year: 99
Sportster/Buell Model #2: Turbo 1350 XLDS project
Sportster/Buell Year #2: 2000
Other Motorcycle Model: 883->1330 dragster
Other Motorcycle Year: 1991
Reputation: 144053
bitpusher has a brilliant futurebitpusher has a brilliant futurebitpusher has a brilliant futurebitpusher has a brilliant futurebitpusher has a brilliant futurebitpusher has a brilliant futurebitpusher has a brilliant futurebitpusher has a brilliant futurebitpusher has a brilliant futurebitpusher has a brilliant futurebitpusher has a brilliant future
Default 1250 breakin + mototune fast&hard = fail

I could spend 5 paragraphs softening you up about how I knew better, actually posted against fast & hard, but second guessed and decided 'what do i have to lose, jugs and rings?' and went ahead and tried it but I won't.

Did heat cycles and then did a mototuneusa street breakin.

It did not take long for me to realize that it had gone south. But i was not man enough to admit it and pretended that everything was AOKAY. I mean the bike still pulled like a scalded dog but I knew there was something missing.

When my stage 2 04+ heads showed up I did a compression check before I pulled the originals the carnage began to reveal itself....

dry: 180 front, 150 rear.
wet: 180 front, 180 rear.

even the best, 180, is low for 10.5:1 from what I understand

got the heads off and almost cried. the fact that the rings were intact and showed no signs of imminent explosion was of minimal relief.

As the tests show, the front was in the best shape and only showed minimal scuffing on the front and rear quadrants, had consistent but low compression. The piston showed some scuff on the skirt but nothing to get alarmed over.

The rear cylinder had severe scuffing, likely microwelding at NW, NE, SE and SW quadrants. I didn't even need to use my fingernail. You could feel it with a fingertip. The piston showed a bit more scuffing than the front but the horizontal machining was still visible so I considered it serviceable as well..


can't find the pictures of the pistons but here are some of the cyls. Was fighting the light trying to get a clear pic so no detailed descriptions, should be obvious which is front and which is rear.

good news is that by RTFM'ing I finally ended up with 210 in both cyls. Will post the success story in the build thread

THE MORAL TO THIS STORY IS: Unless you absolutely are convinced that you know what you are doing and are willing to bet more than $500 on the results then you should RTFM the NRHS pdf and follow to the letter. I now have 210 on the dot in both dry cylinders and a beast that pulls like a scalded dog.




























__________________


"Only those who will risk going too far can possibly find out how far one can go." - T. S. Eliot

TGB #8
#1999 1350 APS-PBG AMA/USFRA current

Last edited by bitpusher; 9th August 2011 at 06:52..
Reply With Quote
  #2  
Old 9th August 2011
chardhin's Avatar
chardhin chardhin is offline
Master Custom Bike Builder
 
Join Date: Oct 2009
Location: the 918
Posts: 3,096
Sportster/Buell Model: xl 883c<1212
Sportster/Buell Year: 2005
Other Motorcycle Model: RoadKing Classic
Other Motorcycle Year: 2010
Blog Entries: 3
Reputation: 479470
chardhin has a reputation beyond reputechardhin has a reputation beyond reputechardhin has a reputation beyond reputechardhin has a reputation beyond reputechardhin has a reputation beyond reputechardhin has a reputation beyond reputechardhin has a reputation beyond reputechardhin has a reputation beyond reputechardhin has a reputation beyond reputechardhin has a reputation beyond reputechardhin has a reputation beyond repute
Default

sux man, all I will say. good luck on the rebuild.
__________________
I find it hard to believe that "everybody" was Kung Fu fighting.
Reply With Quote
  #3  
Old 9th August 2011
Evil_Seven's Avatar
Evil_Seven Evil_Seven is offline
Chief Harley Engineer
 
Join Date: Jun 2009
Location: Milwaukee
Posts: 539
Sportster/Buell Model: XL1200N
Sportster/Buell Year: 2009
Reputation: 10185
Evil_Seven is a glorious beacon of lightEvil_Seven is a glorious beacon of lightEvil_Seven is a glorious beacon of lightEvil_Seven is a glorious beacon of lightEvil_Seven is a glorious beacon of lightEvil_Seven is a glorious beacon of lightEvil_Seven is a glorious beacon of lightEvil_Seven is a glorious beacon of lightEvil_Seven is a glorious beacon of lightEvil_Seven is a glorious beacon of lightEvil_Seven is a glorious beacon of light
Default

the service manual is the closest thing to the bible.....
__________________
Aloha Snackbar
Reply With Quote
  #4  
Old 9th August 2011
bitpusher bitpusher is offline
outside the box racing
 
Join Date: Jan 2011
Location: Phoenix, Az
Posts: 4,330
Sportster/Buell Model: Turbo 1350 XLSR
Sportster/Buell Year: 99
Sportster/Buell Model #2: Turbo 1350 XLDS project
Sportster/Buell Year #2: 2000
Other Motorcycle Model: 883->1330 dragster
Other Motorcycle Year: 1991
Reputation: 144053
bitpusher has a brilliant futurebitpusher has a brilliant futurebitpusher has a brilliant futurebitpusher has a brilliant futurebitpusher has a brilliant futurebitpusher has a brilliant futurebitpusher has a brilliant futurebitpusher has a brilliant futurebitpusher has a brilliant futurebitpusher has a brilliant futurebitpusher has a brilliant future
Default

Quote:
Originally Posted by chardhin View Post
sux man, all I will say. good luck on the rebuild.
thanks. re-rebuild is done. am broke and happy. will post to main build thread the happy results.

Quote:
Originally Posted by Evil_Seven View Post
the service manual is the closest thing to the bible.....
actually the very simple instructions that Dan publishes to go with his 1250 kit is closer to the bible than FSM but you are almost right.
Reply With Quote
  #5  
Old 9th August 2011
darkdesign's Avatar
darkdesign darkdesign is offline
Senior Chief Know It All
 
Join Date: Jun 2011
Location: qld australia
Posts: 873
Sportster/Buell Model: xl883c
Sportster/Buell Year: 2007
Reputation: 37231
darkdesign is a splendid one to beholddarkdesign is a splendid one to beholddarkdesign is a splendid one to beholddarkdesign is a splendid one to beholddarkdesign is a splendid one to beholddarkdesign is a splendid one to beholddarkdesign is a splendid one to beholddarkdesign is a splendid one to beholddarkdesign is a splendid one to beholddarkdesign is a splendid one to beholddarkdesign is a splendid one to behold
Default

so to clarify, thats a no-go on the mototune method?
Reply With Quote
  #6  
Old 9th August 2011
bitpusher bitpusher is offline
outside the box racing
 
Join Date: Jan 2011
Location: Phoenix, Az
Posts: 4,330
Sportster/Buell Model: Turbo 1350 XLSR
Sportster/Buell Year: 99
Sportster/Buell Model #2: Turbo 1350 XLDS project
Sportster/Buell Year #2: 2000
Other Motorcycle Model: 883->1330 dragster
Other Motorcycle Year: 1991
Reputation: 144053
bitpusher has a brilliant futurebitpusher has a brilliant futurebitpusher has a brilliant futurebitpusher has a brilliant futurebitpusher has a brilliant futurebitpusher has a brilliant futurebitpusher has a brilliant futurebitpusher has a brilliant futurebitpusher has a brilliant futurebitpusher has a brilliant futurebitpusher has a brilliant future
Default

Quote:
Originally Posted by darkdesign View Post
so to clarify, thats a no-go on the mototune method?
umm.. that would be yes: no-go on the mototune breakin. edited first post. thanks.
Reply With Quote
  #7  
Old 9th August 2011
CBAS5 CBAS5 is offline
Senior Master Custom Bike Builder
 
Join Date: Aug 2005
Posts: 3,858
Sportster/Buell Model: XL1200C
Sportster/Buell Year: 05
Reputation: 69037
CBAS5 has much to be proud ofCBAS5 has much to be proud ofCBAS5 has much to be proud ofCBAS5 has much to be proud ofCBAS5 has much to be proud ofCBAS5 has much to be proud ofCBAS5 has much to be proud ofCBAS5 has much to be proud ofCBAS5 has much to be proud ofCBAS5 has much to be proud ofCBAS5 has much to be proud of
Default

Sorry to hear that, but thanks for posting that. Hopefully others will see this. I do like to use a technique to bed the rings, but the mototune method is crazy and much different than bedding rings.
__________________
2005 XL1200C
Those who trade liberty for security have neither.
Reply With Quote
  #8  
Old 9th August 2011
darkdesign's Avatar
darkdesign darkdesign is offline
Senior Chief Know It All
 
Join Date: Jun 2011
Location: qld australia
Posts: 873
Sportster/Buell Model: xl883c
Sportster/Buell Year: 2007
Reputation: 37231
darkdesign is a splendid one to beholddarkdesign is a splendid one to beholddarkdesign is a splendid one to beholddarkdesign is a splendid one to beholddarkdesign is a splendid one to beholddarkdesign is a splendid one to beholddarkdesign is a splendid one to beholddarkdesign is a splendid one to beholddarkdesign is a splendid one to beholddarkdesign is a splendid one to beholddarkdesign is a splendid one to behold
Default

Quote:
Originally Posted by bitpusher View Post
umm.. that would be yes: no-go on the mototune breakin. edited first post. thanks.
thanks. Didn't want to sound thick, but I'm hoping to do this to mine (1250 kit that is ) and being able to cross the mototune method off my list of 'what ifs' is great.
Reply With Quote
  #9  
Old 9th August 2011
Evil_Seven's Avatar
Evil_Seven Evil_Seven is offline
Chief Harley Engineer
 
Join Date: Jun 2009
Location: Milwaukee
Posts: 539
Sportster/Buell Model: XL1200N
Sportster/Buell Year: 2009
Reputation: 10185
Evil_Seven is a glorious beacon of lightEvil_Seven is a glorious beacon of lightEvil_Seven is a glorious beacon of lightEvil_Seven is a glorious beacon of lightEvil_Seven is a glorious beacon of lightEvil_Seven is a glorious beacon of lightEvil_Seven is a glorious beacon of lightEvil_Seven is a glorious beacon of lightEvil_Seven is a glorious beacon of lightEvil_Seven is a glorious beacon of lightEvil_Seven is a glorious beacon of light
Default

I can't believe you tried the "mototune method"

Good things come to those who wait. Heat cycles and an easy break in period for 500 miles is the best best.

no worries, live and learn.
Reply With Quote
Sponsored Links
  #10  
Old 9th August 2011
steelworker's Avatar
steelworker steelworker is offline
XL FORUM TEAM MEMBER
 
Join Date: Oct 2007
Location: Perfidious Albion
Posts: 8,541
Sportster/Buell Model: XL1250S
Sportster/Buell Year: 1998
Other Motorcycle Model: Yamaha MT-09
Other Motorcycle Year: 2016
Reputation: 2939586
steelworker has a reputation beyond reputesteelworker has a reputation beyond reputesteelworker has a reputation beyond reputesteelworker has a reputation beyond reputesteelworker has a reputation beyond reputesteelworker has a reputation beyond reputesteelworker has a reputation beyond reputesteelworker has a reputation beyond reputesteelworker has a reputation beyond reputesteelworker has a reputation beyond reputesteelworker has a reputation beyond repute
Default

Quote:
Originally Posted by bitpusher View Post
(whispering..) maybe on a new bike that has already been heat cycled and has a few miles on it but (SHOUTING) ONLY IF YOU ARE READY TO REPLACE YOUR JUGS AND RINGS (best case scenario, could be worse) IF IT GOES SOUTH!!!!!
You've learned your lesson the hard and expensive way, so why the do you even bother qualifying the timely warning to others that this thread constitutes by suggesting that it might be ok to cane the tits off a bike after it's been heat cycled and has just a few miles on it? What makes you think that would turn out any better than your experience?

Send the bill for the replacement barrels and pistons to that grinning idiot Motoman, and say loud and clear, without equivocation, DO NOT FOLLOW THE ADVICE OF INTERNET CHARLATANS!!! Follow the factory / manufacturer's recommended break-in procedures. PLEASE don't listen to paranoid delusional conspiracy theorists who claim, for instance, that manufacturers specify procedures that will wear out your engine faster so they can charge you to replace worn-out parts!
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 07:03.


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