The Sportster and Buell Motorcycle Forum - The XLFORUM®
 

Go Back   The Sportster and Buell Motorcycle Forum - The XLFORUM® > SPORTSTER & BUELL MOTORCYCLE RACING > Sportster Motorcycle Drag Racing
XLF Blogs XLF Arcade XLF Disclaimer/Privacy Statement/Terms Of Use

Notices

Sportster Motorcycle Drag Racing Discuss drag racing on a Sportster Motorcycle.

Active Threads
0 It's xena's Birthday Today!
Last Post: jharback
Posted On: 57 Minutes Ago
Replies: 6
Views: 100
0 1985 front fork question
Last Post: Maxdog2
Posted On: 1 Hour Ago
Replies: 3
Views: 112
0 Divorced Ironhead project.
Last Post: brianbbs67
Posted On: 2 Hours Ago
Replies: 19
Views: 2,622
0 Shovester Sighting
Last Post: brianbbs67
Posted On: 2 Hours Ago
Replies: 52
Views: 5,943
0 Boardtracker Project
Last Post: brianbbs67
Posted On: 2 Hours Ago
Replies: 522
Views: 95,007
0 Where are the New Hampshire Sportsters?
Last Post: sportysrock
Posted On: 3 Hours Ago
Replies: 7
Views: 224
0 Shift Tower Interchangeability / 4 Speed Rebuild
Last Post: WI_duker
Posted On: 3 Hours Ago
Replies: 57
Views: 1,802
0 R.I.P.Aretha Franklin
Last Post: Nibelungen
Posted On: 4 Hours Ago
Replies: 3
Views: 115
0 1998 Sportster Ignition Problems
Last Post: IXL2Relax
Posted On: 4 Hours Ago
Replies: 17
Views: 482
0 Drum brake/speedometer mod?
Last Post: Gold Member
Posted On: 4 Hours Ago
Replies: 13
Views: 334
0 As far as maintenance goes...Cycle Electric or Alternator?
Last Post: Stick_Man
Posted On: 4 Hours Ago
Replies: 16
Views: 616
0 Big Bore Kit - What else is needed
Last Post: rocketmangb
Posted On: 5 Hours Ago
Replies: 9
Views: 322
10 Dead Horse Poll
Last Post: Folkie
Posted On: 5 Hours Ago
Replies: 2,521
Views: 126,115
0 (How to Needed) TC88A ignition module donated to me
Last Post: rocketmangb
Posted On: 6 Hours Ago
Replies: 27
Views: 815
0 Roads I'd like to ride.
Last Post: Stairman
Posted On: 6 Hours Ago
Replies: 278
Views: 11,228
0 ‘17 Roadster no start...
Last Post: ADK XL
Posted On: 6 Hours Ago
Replies: 15
Views: 546
0 Hottie of the day, no nudity.
Last Post: trainman
Posted On: 6 Hours Ago
Replies: 7,566
Views: 553,354
0 How is 1969 xlch voltage dispersed and regulated.
Last Post: JackPrice53
Posted On: 6 Hours Ago
Replies: 12
Views: 388
0 Why cafe a sportster?
Last Post: tigger
Posted On: 7 Hours Ago
Replies: 237
Views: 74,893
0 THE Trainspotting Thread
Last Post: trainman
Posted On: 7 Hours Ago
Replies: 2,027
Views: 215,364
0 Help removing speedo connector
Last Post: DramaLlama
Posted On: 8 Hours Ago
Replies: 5
Views: 76
3 Wtb, Wts, Wtt, Wtg (Ironhead)
Last Post: sdsbassist
Posted On: 9 Hours Ago
Replies: 88
Views: 196,127
5 Installing Ultima Ignition ...
Last Post: Fridge
Posted On: 9 Hours Ago
Replies: 40
Views: 7,592
0 C.O.B.B run west
Last Post: coastie56
Posted On: 9 Hours Ago
Replies: 200
Views: 15,045
0 Anyone go racing last weekend?
Last Post: rocketmangb
Posted On: 10 Hours Ago
Replies: 2,699
Views: 243,865
0 Official XL Forum Random Image Thread (NO NUDITY!)
Last Post: Graywolf
Posted On: 10 Hours Ago
Replies: 41,192
Views: 6,315,197
0 End of the road for me
Last Post: Graywolf
Posted On: 10 Hours Ago
Replies: 34
Views: 1,760
0 Have You Seen This? (New Harleys)
Last Post: jammantoo
Posted On: 10 Hours Ago
Replies: 91
Views: 3,382
0 words fail me
Last Post: Graywolf
Posted On: 11 Hours Ago
Replies: 31
Views: 1,356
0 To crossover or not?
Last Post: Graywolf
Posted On: 11 Hours Ago
Replies: 23
Views: 3,477
More...
Members Birthdays
BobH (64), jcrow (64), release (63), Iron Joker (58), rickschad (55), mickes (54), indyrednek (54), jarhead08, koidac (42)
Sponsored Links
Reply
 
Share Thread Tools Display Modes
  #91  
Old 26th April 2018
MatHormell's Avatar
MatHormell MatHormell is offline
Senior Chief Master Mechanic 1st Class
 
Join Date: Jul 2015
Location: Merica!Fock YA!
Posts: 1,221
Sportster/Buell Model: XL883R
Sportster/Buell Year: 2002
Sportster/Buell Model #2: Buell XB12R
Sportster/Buell Year #2: 2009
Other Motorcycle Model: Yamaha
Other Motorcycle Year: 95
Reputation: 958932
MatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond repute
Default

Quote:
Originally Posted by mac93 View Post
Update, made some changes, dual plugged the heads and went with a coating on the piston skirts. Trying to keep the pistons from rocking. I feel the rpm we were running is beating them up. Also added .010 to the head gasket just in case there’s still some piston rock. First time out with WAG tuning he was dialing a 9.50, had way to much wheelspeed on the hit so just dialed for it and raced. According to the plugs timing ( to much advance ) and jetting ( a little lean) were off. Even with the tune up off he had the power he needed, 139 mph, to race the stripe. Still was able to get the win. Did a leak down after the race and the rings are not seated yet. Hope they get better. Looking at running a 9.70 index that’s starting up around here. As far as the cases it looks like the repairs are holding up good. We’ll see what the season brings.
was it L2L you used for the skirt coating? I just had mine done as well. not back together yet, but curious on how it has worked out and if and what noticeable difference you have seen?
__________________
HAMMER PERFORMANCE 90 Ci
CP .500 Dome Pistons
Axtel Cast Iron Cylinders
HAMMER PERFORMANCE .600 Cams
1.725 Ratio S&S Rocker Arms
HAMMER PERFORMANCE Intake Manifold
HSR 48 Miunki
XR1200 Crank Conversion W/ Case Mod 34T
HAMMER PERFORMANCE Sledge+ Head Work
2.020" Intake and 1.630" Exhaust Valves
Conical Valve Springs
S&S Premium Lifters
HAMMER PERFORMANCE Billet Push Rod Bases
Barnett Clutch Hub With Scorpion Clutch
Dynatek 2000i
R&D MOTORSPORTS- TRANSMISSION WORK-REM ISF
WorldWideBearings
Patriot Defender Exhaust
Reply With Quote
  #92  
Old 26th April 2018
mac93 mac93 is offline
Senior Chief Know It All 2nd Class
 
Join Date: Mar 2009
Posts: 1,410
Sportster/Buell Model: 1200
Sportster/Buell Year: 95
Reputation: 141371
mac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant future
Default

Yes, we’re trying line2line coating on the piston skirts. To early to tell but I did notice the engine was harder to turn over when I first put it together. You can feel the drag in the tight piston wall clearance. Seems to be freeing up but being a track only bike I hope it works out like it should.
Reply With Quote
  #93  
Old 26th April 2018
MatHormell's Avatar
MatHormell MatHormell is offline
Senior Chief Master Mechanic 1st Class
 
Join Date: Jul 2015
Location: Merica!Fock YA!
Posts: 1,221
Sportster/Buell Model: XL883R
Sportster/Buell Year: 2002
Sportster/Buell Model #2: Buell XB12R
Sportster/Buell Year #2: 2009
Other Motorcycle Model: Yamaha
Other Motorcycle Year: 95
Reputation: 958932
MatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond repute
Default

Quote:
Originally Posted by mac93 View Post
Yes, we’re trying line2line coating on the piston skirts. To early to tell but I did notice the engine was harder to turn over when I first put it together. You can feel the drag in the tight piston wall clearance. Seems to be freeing up but being a track only bike I hope it works out like it should.
Yea they did mention it would be harder to turn over until it hones its self to fit, I plan do to dyno break in pulls to hopefully speed up the process, in their studies it's full fit to size around 500 miles.. I'm just going to follow their break in instructions on the dyno and see how it goes

Sent from my SAMSUNG-SM-G890A using Tapatalk
Reply With Quote
  #94  
Old 17th May 2018
mac93 mac93 is offline
Senior Chief Know It All 2nd Class
 
Join Date: Mar 2009
Posts: 1,410
Sportster/Buell Model: 1200
Sportster/Buell Year: 95
Reputation: 141371
mac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant future
Default

Got the boroscope out and looked at the piston and cylinder. Had enough detonation on the rear cylinder to eat away at the coating a little. Front was much better but showing signs. Might have learned something there between the two. I was way off on the timing, all my fault, I got sidetracked. I would post pics but have no idea how. The leak down was 20% after the race, all past the rings. This was after normal heat cycles and a ride around town. Learned that’s not enough, haha. Usually spend more time on break in but ran out of time before the race. Corrected the timing and been riding it around hoping to improve the ring seal. Got it down to 5%. Should be more like 2%/3% at this point. Oh well. Is what it is, when it’s race day you race. If not. Listen to the builder and TAKE THE TIME it takes to do a proper break in!!! That said, the win was worth it!
Reply With Quote
  #95  
Old 17th May 2018
madnss's Avatar
madnss madnss is offline
XL FORUM TEAM MEMBER
 
Join Date: Feb 2008
Posts: 6,953
Sportster/Buell Model: 883 Xl
Sportster/Buell Year: 1992
Reputation: 1107399
madnss has a reputation beyond reputemadnss has a reputation beyond reputemadnss has a reputation beyond reputemadnss has a reputation beyond reputemadnss has a reputation beyond reputemadnss has a reputation beyond reputemadnss has a reputation beyond reputemadnss has a reputation beyond reputemadnss has a reputation beyond reputemadnss has a reputation beyond reputemadnss has a reputation beyond repute
Default

Dang! You’ll get it and good luck next time out. Soon?

Doesn’t sound like much wiggle room on how you break in the axtells.
Reply With Quote
  #96  
Old 17th May 2018
madnss's Avatar
madnss madnss is offline
XL FORUM TEAM MEMBER
 
Join Date: Feb 2008
Posts: 6,953
Sportster/Buell Model: 883 Xl
Sportster/Buell Year: 1992
Reputation: 1107399
madnss has a reputation beyond reputemadnss has a reputation beyond reputemadnss has a reputation beyond reputemadnss has a reputation beyond reputemadnss has a reputation beyond reputemadnss has a reputation beyond reputemadnss has a reputation beyond reputemadnss has a reputation beyond reputemadnss has a reputation beyond reputemadnss has a reputation beyond reputemadnss has a reputation beyond repute
Default



Front




Rear


Sent from my iPhone using Tapatalk
Reply With Quote
  #97  
Old 21st May 2018
MatHormell's Avatar
MatHormell MatHormell is offline
Senior Chief Master Mechanic 1st Class
 
Join Date: Jul 2015
Location: Merica!Fock YA!
Posts: 1,221
Sportster/Buell Model: XL883R
Sportster/Buell Year: 2002
Sportster/Buell Model #2: Buell XB12R
Sportster/Buell Year #2: 2009
Other Motorcycle Model: Yamaha
Other Motorcycle Year: 95
Reputation: 958932
MatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond repute
Default

Curious on what a race motor break in should look like?
I break them in all the same.. not like you can do 500 mile soft break in on a high compression race motor.. That being said I know very few racers who do a full by the book break in. Mostly just a few heat cycles and a ride and then to the track.

I think soft break ins for manufactures are due to mass-producing motors where there can be many differences in tolerances and spacing between different production runs. With so many variables it is best to break the engine in slow since there could be high amounts of heat and wear that occur because of these differences..
For a motor that has been hand built, and measured by yourself or engine builder to have perfect tolerances knowing that everything has been machined correctly, than no harm should come from a harder break in/dyno break in.

Me personally, I do a couple heat cycles, followed by a short test ride then it goes on the dyno for break in runs.
I do 3- 1/2 Throttle pulls
40% - 60% of max rpm
Cool Down 15 Minutes
3- 3/4 Throttle pulls
40% - 80% of max rpm
Cool Down 15 Minutes
Full Throttle pulls
3- 30% - 100% of max rpm

I think the key to the Axtells is waiting until its up to full operating temp before hammering on it. I have a hard time believing it takes millions of revolutions to seat the rings.. more like in the first 20 minutes/miles IMO and I will always feel the DYNO is the most optimal place to break in a motor. but that's just my 2-cents..
Reply With Quote
  #98  
Old 22nd May 2018
mac93 mac93 is offline
Senior Chief Know It All 2nd Class
 
Join Date: Mar 2009
Posts: 1,410
Sportster/Buell Model: 1200
Sportster/Buell Year: 95
Reputation: 141371
mac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant future
Default

I use Hammer stuff but for break in I use Zippers break in page, maybe four or five short blasts around the neighborhood, couple few burnouts and some dyno time. 2/3 % after that. Didn’t do that this time.... still got the win tho. But. How good can I get it and how long will it last?
Reply With Quote
  #99  
Old 5th June 2018
mac93 mac93 is offline
Senior Chief Know It All 2nd Class
 
Join Date: Mar 2009
Posts: 1,410
Sportster/Buell Model: 1200
Sportster/Buell Year: 95
Reputation: 141371
mac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant futuremac93 has a brilliant future
Default

Been riding around to continue the break in, leak down is 3% front and 5% rear so it seems to be getting better. Cranking compression is only 205 front and rear compared to 230 last year. I did change the pistons added a second plug and added .010 in head gasket, guessing that’s why. Seems like a big drop tho, IDK.
Reply With Quote
Sponsored Links
  #100  
Old 13th June 2018
cycowrencher's Avatar
cycowrencher cycowrencher is offline
XL FORUM TEAM MEMBER
 
Join Date: May 2009
Location: Pepperell, MA
Posts: 2,575
Sportster/Buell Model: XLH 1200
Sportster/Buell Year: 2003
Other Motorcycle Model: 1984 KX 125
Reputation: 104044
cycowrencher has much to be proud ofcycowrencher has much to be proud ofcycowrencher has much to be proud ofcycowrencher has much to be proud ofcycowrencher has much to be proud ofcycowrencher has much to be proud ofcycowrencher has much to be proud ofcycowrencher has much to be proud ofcycowrencher has much to be proud ofcycowrencher has much to be proud ofcycowrencher has much to be proud of
Default

You coming for Sat BIV?

Sent from my LGLS992 using Tapatalk
__________________
USN 1991-1995 VFA-81/ USS Saratoga, Iraq 1, Kosovo/ Bosnia Conflict
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 08:24.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2018, vBulletin Solutions Inc.
XL Forum® - Linson Media LLC