The Sportster and Buell Motorcycle Forum - The XLFORUM®
 

Go Back   The Sportster and Buell Motorcycle Forum - The XLFORUM® > BUELL MOTORCYCLE FORUM > Buell Motorcycle Bottom End
XLF Blogs XLF Arcade XLF Disclaimer/Privacy Statement/Terms Of Use

Active Threads
12 Crankcase breathing?
Last Post: Folkie
Posted On: 4 Minutes Ago
Replies: 2
Views: 20
0 Dual Speedo/Tach Gauge Mount Failure
Last Post: IXL2Relax
Posted On: 16 Minutes Ago
Replies: 8
Views: 201
0 Hottie of the day, no nudity.
Last Post: Stairman
Posted On: 41 Minutes Ago
Replies: 20,074
Views: 2,045,330
0 Official XL Forum Random Image Thread (NO NUDITY!)
Last Post: Stairman
Posted On: 44 Minutes Ago
Replies: 47,747
Views: 7,646,955
0 ....1
Last Post: DEEP DIVER
Posted On: 1 Hour Ago
Replies: 5,568
Views: 324,023
0 Real Horse Power Difference in Head Treatments
Last Post: rejeanprimeau
Posted On: 1 Hour Ago
Replies: 33
Views: 495
0 Adjusting Drive Belt While On A Lift
Last Post: Folkie
Posted On: 1 Hour Ago
Replies: 2
Views: 48
0 Do you use a bike cover?
Last Post: Old Rocker
Posted On: 2 Hours Ago
Replies: 24
Views: 6,783
0 Rear sets?
Last Post: bordens
Posted On: 2 Hours Ago
Replies: 30
Views: 11,691
0 Keep & Kill
Last Post: Graywolf
Posted On: 2 Hours Ago
Replies: 17,516
Views: 1,014,299
0 Hardtail 01 883C conversation.
Last Post: Vic8028
Posted On: 3 Hours Ago
Replies: 17
Views: 1,141
0 Sportster Fork Upgrade
Last Post: PetesPonies
Posted On: 4 Hours Ago
Replies: 66
Views: 15,818
0 What did you do for your sporty Today?
Last Post: cal43
Posted On: 4 Hours Ago
Replies: 6,980
Views: 990,916
0 "S" model specific Q&A
Last Post: Hippysmack
Posted On: 4 Hours Ago
Replies: 1,988
Views: 405,333
0 Ground Up Beginner Build
Last Post: Paul.W
Posted On: 5 Hours Ago
Replies: 7
Views: 183
0 Turbo Iron 883
Last Post: Cj_
Posted On: 6 Hours Ago
Replies: 40
Views: 1,893
0 Current projects (2 of them anyway)
Last Post: Ferrous Head
Posted On: 6 Hours Ago
Replies: 4
Views: 86
0 My Rear Master Cylinder Re-build
Last Post: PetesPonies
Posted On: 7 Hours Ago
Replies: 131
Views: 70,018
0 Screamin Eagle slip-ons too loud
Last Post: Blackmagellan
Posted On: 7 Hours Ago
Replies: 24
Views: 10,307
0 Clutch springs
Last Post: BigMek
Posted On: 7 Hours Ago
Replies: 4
Views: 137
0 Coil polarity
Last Post: ryder rick
Posted On: 9 Hours Ago
Replies: 1
Views: 71
0 Snippets
Last Post: sportsterpaul
Posted On: 9 Hours Ago
Replies: 152
Views: 14,225
0 New Guy with Experienced Bike
Last Post: Bikeaholic
Posted On: 9 Hours Ago
Replies: 17
Views: 277
0 Info needed on mini sumps.
Last Post: Steve9
Posted On: 10 Hours Ago
Replies: 48
Views: 2,034
0 primary cover
Last Post: smoggy
Posted On: 10 Hours Ago
Replies: 3
Views: 222
0 HOW BIG? Mikuni on a 1250 kit?
Last Post: davesz1r
Posted On: 10 Hours Ago
Replies: 30
Views: 603
0 Chinese S&S carbs
Last Post: Steve9
Posted On: 10 Hours Ago
Replies: 55
Views: 2,603
0 oil transfer valve
Last Post: GA_Ironhead
Posted On: 11 Hours Ago
Replies: 6
Views: 185
0 Tappet blocks and tappets
Last Post: Iron Mike
Posted On: 11 Hours Ago
Replies: 23
Views: 772
0 Food porn
Last Post: Crusty
Posted On: 12 Hours Ago
Replies: 1,976
Views: 378,441
More...
Members Birthdays
PEISprotster (68), 2009XR (66), Briank (61), bbj6635 (59), Reddog225 (48), larre1973, Irondrake77 (41), picowatt (40), Jeffrey99 (39), namesnick (39)
Reply
 
Share Thread Tools Display Modes
  #1  
Old 10th May 2006
Kazoom's Avatar
Kazoom Kazoom is offline
Chief Know It All
 
Join Date: Sep 2005
Location: Cal, AB, CND
Posts: 438
Sportster/Buell Model: X1
Sportster/Buell Year: 00
Sportster/Buell Model #2: X1
Sportster/Buell Year #2: 01
Other Motorcycle Model: xlch chop
Other Motorcycle Year: 77
Reputation: 133
Kazoom is on a distinguished roadKazoom is on a distinguished road
Default Buell stroker?

I was just thinking about this today that maybe I should consider installing a 4-5/16 S&S stroker assembly since I need to disassemble the cases anyway for the 88" big bore kit, anyone done this here yet on there bikes?. The way I understand it anything more than a 4-5/16 stroke is not a good thing to do, anyone have any thoughts on this?... bad idea... good idea?
Reply With Quote
  #2  
Old 7th August 2006
Kazoom's Avatar
Kazoom Kazoom is offline
Chief Know It All
 
Join Date: Sep 2005
Location: Cal, AB, CND
Posts: 438
Sportster/Buell Model: X1
Sportster/Buell Year: 00
Sportster/Buell Model #2: X1
Sportster/Buell Year #2: 01
Other Motorcycle Model: xlch chop
Other Motorcycle Year: 77
Reputation: 133
Kazoom is on a distinguished roadKazoom is on a distinguished road
Default

Ok... heres another question regarding the rpm and piston speed of these engines.

3-13/16" bore with 3-13/16" stroke, 88"

3-13/16" bore with 4-5/16" stroke, 99"

4" bore with 4" stroke, 100"

I have seen many online dyno results with the 88" (square) engines spining to 7000+rpm. I am wondering if there have been any issues with spining a 100" (square) engine to the same rpm's?. I am assuming spining the 99" engine to these rpm's could have problems? (yes-no). any thoughts?

Zippers has some kits listed online that I have been thinking about again

http://www.zippersperformance.com/ca...ts.asp?cat=865

edit... sorry

one more question, I know S&S makes the bottom ends but I am wondering if there are any others/companys that make stoker flywheels and rods?, it would be neat to find some one else offering lighter/stonger rods and even lighter flywheels than the S&S stuff.

Last edited by Kazoom; 7th August 2006 at 23:44..
Reply With Quote
  #3  
Old 29th August 2008
cheetahman's Avatar
cheetahman cheetahman is offline
Biker
 
Join Date: Jul 2008
Posts: 31
Sportster/Buell Model: xr1200
Sportster/Buell Year: 1987
Reputation: 27
cheetahman is an unknown quantity at this point
Default

I have run strokers out to 4 5/8" routinely on the street, and found them to be as reliable as stock when, and this is key, when they are assembled correctly with care and precision. I believe dynamic engine balancing with all your parts included is critical. This is a must do step in my opinion, and just as in everything else, it is important that the balancer does the very best job possible. Don't look for a cheap job and then complain cause the motor didn't last. Also the assembly of the lower rod bearings is critical, the cleaner this job is and the more precise the measurements and bearing fitment, the longer the lower end will last. Any shop that does this must have, in my opinion, the very best in measuring equipment, and people who are used to using it. You simply cannot be too precise or too clean when you do this. The best lowers are assembled under double clean room conditions. And yes it's true, people knock them together every day in their chicken coops with an old rusty set of calipers. What the heck, it's only a Harley.

Last edited by cheetahman; 29th August 2008 at 18:12.. Reason: additional thoughts
Reply With Quote
  #4  
Old 30th August 2008
LifesHarlequin's Avatar
LifesHarlequin LifesHarlequin is offline
Master Mechanic
 
Join Date: Aug 2008
Location: NAF Atsugi, Japan
Posts: 299
Sportster/Buell Model: XB9SX
Sportster/Buell Year: 2007
Other Motorcycle Model: Bicycles (Daily Rider)
Other Motorcycle Year: 2009
Reputation: 2327
LifesHarlequin is a jewel in the roughLifesHarlequin is a jewel in the roughLifesHarlequin is a jewel in the roughLifesHarlequin is a jewel in the roughLifesHarlequin is a jewel in the roughLifesHarlequin is a jewel in the roughLifesHarlequin is a jewel in the roughLifesHarlequin is a jewel in the roughLifesHarlequin is a jewel in the roughLifesHarlequin is a jewel in the roughLifesHarlequin is a jewel in the rough
Default

I have to second cheetahman, because the higher your RPM's go, the more crucial it becomes that your rotating assembly is balanced. If you have a well balanced assembly made of forged components, then it should be able to rev as high as the rest of the your engine can handle. Just have to keep in mind that the higher rpms you go, the more stress you're putting on your engine over all, so every part has to be up to snuff (ie. oiling, valve train, general hardware such as head bolt studs, etc.) And assembly is everything. You can have top notch parts, but you put them together in that chicken coop and suddenly expect them to take 7000+ rpms, its just a disaster waiting to happen.
__________________
2007 XB9SX Hero Blue (Bone Stock)
Reply With Quote
  #5  
Old 10th February 2009
Stephen Lowry's Avatar
Stephen Lowry Stephen Lowry is offline
Senior Chief Know It All 2nd Class
 
Join Date: Sep 2008
Posts: 1,488
Sportster/Buell Model: 1988 XLH 1424cc
Sportster/Buell Year: 1988
Sportster/Buell Model #2: XLX iron head
Sportster/Buell Year #2: 1983
Other Motorcycle Model: Victory Vision
Other Motorcycle Year: 2008
Reputation: 2133
Stephen Lowry is a jewel in the roughStephen Lowry is a jewel in the roughStephen Lowry is a jewel in the roughStephen Lowry is a jewel in the roughStephen Lowry is a jewel in the roughStephen Lowry is a jewel in the roughStephen Lowry is a jewel in the roughStephen Lowry is a jewel in the roughStephen Lowry is a jewel in the roughStephen Lowry is a jewel in the roughStephen Lowry is a jewel in the rough
Default

I've beem spinning my 88 incher in the 7000-7500rpm range for years. I have 7000 miles on the bottom end, No problem...................Steve
__________________
XL's: You got love em, make em faster, handle and stop better as they get older: 116 HP & 105 lbs TQ, 88inch Axtell mountain motor.............Steve
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 11:51.


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