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 Rear Shock length '81
Last Post: Steve9
Posted On: 13 Minutes Ago
Replies: 15
Views: 586
0 Upgrade proof, evidence backed, High Flow Air Filter/intake for EFI 883/1200
Last Post: d10221
Posted On: 17 Minutes Ago
Replies: 77
Views: 3,928
0 1250 Unhappiness 2020 edition
Last Post: Tomcatt
Posted On: 18 Minutes Ago
Replies: 37
Views: 1,625
0 1979 oil lines and vents
Last Post: Sportster79
Posted On: 31 Minutes Ago
Replies: 0
Views: 1
0 Keep & Kill
Last Post: fafcpa
Posted On: 39 Minutes Ago
Replies: 20,218
Views: 1,202,662
0 Change to UK petrol
Last Post: ryder rick
Posted On: 40 Minutes Ago
Replies: 6
Views: 109
0 0Salt Flat Sporton
Last Post: Iron Mike
Posted On: 1 Hour Ago
Replies: 19
Views: 410
0 KT - 2021 - You're In It Now
Last Post: Iron Mike
Posted On: 1 Hour Ago
Replies: 6
Views: 814
0 06 1200 Won't idle when hot
Last Post: Folkie
Posted On: 1 Hour Ago
Replies: 17
Views: 920
0 Corona Virus
Last Post: NLXL
Posted On: 1 Hour Ago
Replies: 1,227
Views: 121,905
0 Woke, cancel culture...
Last Post: NLXL
Posted On: 1 Hour Ago
Replies: 21
Views: 758
13 How much will it cost? (Pan America)
Last Post: AZbiker
Posted On: 2 Hours Ago
Replies: 6
Views: 8,788
4 Rear Lighting WIRING help
Last Post: IXL2Relax
Posted On: 3 Hours Ago
Replies: 4
Views: 148
0 Hottie of the day, no nudity.
Last Post: Stairman
Posted On: 3 Hours Ago
Replies: 27,139
Views: 2,817,152
0 Cant find (2001 Jugs/Pistons On 2005 Engine?)
Last Post: rocketmangb
Posted On: 3 Hours Ago
Replies: 2
Views: 71
0 This is gonna hurt.
Last Post: Stairman
Posted On: 3 Hours Ago
Replies: 8,282
Views: 1,813,325
0 10 things i DON'T miss about my sporties
Last Post: AZbiker
Posted On: 3 Hours Ago
Replies: 15
Views: 730
0 How many helmets?
Last Post: bordens
Posted On: 5 Hours Ago
Replies: 210
Views: 43,947
0 XL IR EFI to those that asked
Last Post: Steve9
Posted On: 5 Hours Ago
Replies: 106
Views: 10,369
0 Shocks and clutch Q
Last Post: AZbiker
Posted On: 5 Hours Ago
Replies: 3
Views: 268
0 Want to rejet my 1989 883
Last Post: kitabel
Posted On: 6 Hours Ago
Replies: 3
Views: 115
2 Sloppy Throttle Feel
Last Post: Folkie
Posted On: 6 Hours Ago
Replies: 3
Views: 289
0 DK Customs Air Intake
Last Post: AZbiker
Posted On: 6 Hours Ago
Replies: 3
Views: 257
0 Food porn
Last Post: Stairman
Posted On: 7 Hours Ago
Replies: 2,258
Views: 480,115
0 Official XL Forum Random Image Thread (NO NUDITY!)
Last Post: cal43
Posted On: 8 Hours Ago
Replies: 49,840
Views: 8,140,029
0 Mikuni HSR42 will not idle
Last Post: rocketmangb
Posted On: 14 Hours Ago
Replies: 12
Views: 378
0 Pan American Owners Manual and accessory info
Last Post: Tomcatt
Posted On: 15 Hours Ago
Replies: 10
Views: 432
0 WTB OEM 1977 Sportster handlebars
Last Post: Big Al
Posted On: 15 Hours Ago
Replies: 0
Views: 36
0 Peanut, 3.3 or 4.5 gas tank ?
Last Post: Brad
Posted On: 15 Hours Ago
Replies: 259
Views: 76,362
0 This week on Craig's list
Last Post: Maxeffort
Posted On: 16 Hours Ago
Replies: 5,114
Views: 760,046
More...
Members Birthdays
nailhead (79), Rooster (64), chidovampiro (62), daniel (59), evereyken (58), RogueXR9OO (58)
Reply
 
Share Thread Tools Display Modes
  #1601  
Old 2 Days Ago
Tinz Tinz is offline
Flat Track Champion
 
Join Date: Dec 2014
Posts: 615
Sportster/Buell Model: X1
Sportster/Buell Year: 1999
Reputation: 445691
Tinz has a reputation beyond reputeTinz has a reputation beyond reputeTinz has a reputation beyond reputeTinz has a reputation beyond reputeTinz has a reputation beyond reputeTinz has a reputation beyond reputeTinz has a reputation beyond reputeTinz has a reputation beyond reputeTinz has a reputation beyond reputeTinz has a reputation beyond reputeTinz has a reputation beyond repute
Default

Quote:
Originally Posted by cycowrencher View Post
At this kind of compression it wont matter much...



Sent from my LM-V405 using Tapatalk

Nice! Lol


Sent from my iPhone using Tapatalk
Reply With Quote
  #1602  
Old 2 Days Ago
cycowrencher's Avatar
cycowrencher cycowrencher is offline
XL FORUM TEAM MEMBER
 
Join Date: May 2009
Location: Pepperell, MA
Posts: 2,795
Sportster/Buell Model: XLH 1200
Sportster/Buell Year: 2003
Other Motorcycle Model: 1984 KX 125
Reputation: 271750
cycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond repute
Default

There is a GRC crank service and Carrillo rods in my future... As well as Ti valves so I can spin 8500 plus.... I'll be setting the limiter at 7900 and the shift light at 7600...

Sent from my LM-V405 using Tapatalk
__________________
USN 1991-1995 VFA-81/ USS Saratoga, Iraq 1, Kosovo/ Bosnia Conflict
Reply With Quote
  #1603  
Old 1 Day Ago
brucstoudt's Avatar
brucstoudt brucstoudt is offline
Senior Master Custom Bike Builder
 
Join Date: May 2010
Location: Pottstown PA.
Posts: 14,383
Sportster/Buell Model: xlch
Sportster/Buell Year: 1960
Reputation: 824099
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 cycowrencher View Post
Ceramic top and teflon skirt.

you didn't mention the gas ports in this post. are they common with these pistons?
__________________
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
  #1604  
Old 1 Day Ago
madnss's Avatar
madnss madnss is offline
XL FORUM TEAM MEMBER
 
Join Date: Feb 2008
Posts: 7,431
Sportster/Buell Model: 883 Xl
Sportster/Buell Year: 1992
Reputation: 1628249
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

Quote:
Originally Posted by cycowrencher View Post
There is a GRC crank service and Carrillo rods in my future... As well as Ti valves so I can spin 8500 plus.... I'll be setting the limiter at 7900 and the shift light at 7600...

Sent from my LM-V405 using Tapatalk
Just curious, why the Ti valves if you are shifting at 7600?
Reply With Quote
  #1605  
Old 1 Day Ago
cycowrencher's Avatar
cycowrencher cycowrencher is offline
XL FORUM TEAM MEMBER
 
Join Date: May 2009
Location: Pepperell, MA
Posts: 2,795
Sportster/Buell Model: XLH 1200
Sportster/Buell Year: 2003
Other Motorcycle Model: 1984 KX 125
Reputation: 271750
cycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond repute
Default

Quote:
Originally Posted by madnss View Post
Just curious, why the Ti valves if you are shifting at 7600?
I'm setting the light for 7600. I average about another 200rpm for the shift, and should be shifted at 78ish... The Ti valves will be next year so I can shift @ 8500...it should make power to there. I have SS valves in it now, and they are too heavy to shift that high. If I can get it to a dyno, I'm betting that when the limiter hits at 7900 the power will still be climbing with that compression and those cams... My engine guy went with some pretty hot triple valve springs just to get to 8k. He does a lot of work for Ryan T. , so Im trusting his judgment.

Sent from my LM-V405 using Tapatalk

Last edited by cycowrencher; 1 Day Ago at 01:48..
Reply With Quote
  #1606  
Old 1 Day Ago
cycowrencher's Avatar
cycowrencher cycowrencher is offline
XL FORUM TEAM MEMBER
 
Join Date: May 2009
Location: Pepperell, MA
Posts: 2,795
Sportster/Buell Model: XLH 1200
Sportster/Buell Year: 2003
Other Motorcycle Model: 1984 KX 125
Reputation: 271750
cycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond repute
Default

Quote:
Originally Posted by brucstoudt View Post
you didn't mention the gas ports in this post. are they common with these pistons?
These are a set of custom CP bullet series pistons that were originally ordered by Rat Racing for a project in 2017. Those ports are in the oil ring for oil scraping. Gas ports are usually through the crown into the top of the upper ring land. I bought them to step up the power since the turbo and custom efi was going to be more than my budget... I may still go down that road later, but this was cheaper and easier...

Sent from my LM-V405 using Tapatalk
Reply With Quote
  #1607  
Old 1 Day Ago
madnss's Avatar
madnss madnss is offline
XL FORUM TEAM MEMBER
 
Join Date: Feb 2008
Posts: 7,431
Sportster/Buell Model: 883 Xl
Sportster/Buell Year: 1992
Reputation: 1628249
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 Lets see your off season builds

Quote:
Originally Posted by cycowrencher View Post
I'm setting the light for 7600. I average about another 200rpm for the shift, and should be shifted at 78ish... The Ti valves will be next year so I can shift @ 8500...it should make power to there. I have SS valves in it now, and they are too heavy to shift that high. If I can get it to a dyno, I'm betting that when the limiter hits at 7900 the power will still be climbing with that compression and those cams... My engine guy went with some pretty hot triple valve springs just to get to 8k. He does a lot of work for Ryan T. , so Im trusting his judgment.

Sent from my LM-V405 using Tapatalk

Nice!! Gonna be in the 9’s soon!


Sent from THEE White House

Last edited by madnss; 1 Day Ago at 02:22..
Reply With Quote
  #1608  
Old 20 Hours Ago
cycowrencher's Avatar
cycowrencher cycowrencher is offline
XL FORUM TEAM MEMBER
 
Join Date: May 2009
Location: Pepperell, MA
Posts: 2,795
Sportster/Buell Model: XLH 1200
Sportster/Buell Year: 2003
Other Motorcycle Model: 1984 KX 125
Reputation: 271750
cycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond repute
Default

Quote:
Originally Posted by madnss View Post
Nice!! Gonna be in the 9’s soon!


Sent from THEE White House
Im hoping on pass 4 of licensing...

Sent from my LM-V405 using Tapatalk
Reply With Quote
  #1609  
Old 20 Hours Ago
brucstoudt's Avatar
brucstoudt brucstoudt is offline
Senior Master Custom Bike Builder
 
Join Date: May 2010
Location: Pottstown PA.
Posts: 14,383
Sportster/Buell Model: xlch
Sportster/Buell Year: 1960
Reputation: 824099
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

thanks cycowrencher.
Reply With Quote
Reply

Bookmarks


Currently Active Users Viewing This Thread: 3 (0 members and 3 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 20:32.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
XL Forum® - Linson Media LLC