The Sportster and Buell Motorcycle Forum - The XLFORUM®
 

Go Back   The Sportster and Buell Motorcycle Forum - The XLFORUM® > SPORTSTER MOTORCYCLE FORUM > Sportster Motorcycle Era Specific and Model Specific > Frame Mount EVO Sportster Talk (1986-2003 models)
XLF Blogs XLF Arcade XLF Disclaimer/Privacy Statement/Terms Of Use

Notices

Active Threads
0 Messing with Methanol
Last Post: 11B40
Posted On: 1 Hour Ago
Replies: 27
Views: 1,563
0 what size motor?
Last Post: Ferrous Head
Posted On: 1 Hour Ago
Replies: 20
Views: 565
0 ‘72 Transmission questions
Last Post: doodah man
Posted On: 1 Hour Ago
Replies: 1
Views: 49
0 Keep & Kill
Last Post: Crusty
Posted On: 2 Hours Ago
Replies: 29,785
Views: 1,748,864
0 Not Running Right
Last Post: Mr Dream Merchant
Posted On: 3 Hours Ago
Replies: 28
Views: 1,289
0 West Virginia fall run 2022
Last Post: mikeLI_77
Posted On: 3 Hours Ago
Replies: 40
Views: 1,754
0 Oops, I signed up for another long ass ride: The 2022 Hoka Hey
Last Post: ChinCactus
Posted On: 5 Hours Ago
Replies: 43
Views: 4,059
0 ‘72 Transmission questions
Last Post: NP72Iron
Posted On: 5 Hours Ago
Replies: 0
Views: 59
0 Mikuni trouble
Last Post: Tomcatt
Posted On: 6 Hours Ago
Replies: 1
Views: 95
0 you tube screw up
Last Post: Ferrous Head
Posted On: 6 Hours Ago
Replies: 13
Views: 1,430
0 Clutch basket noise after removal
Last Post: Nilzar
Posted On: 8 Hours Ago
Replies: 0
Views: 53
0 Any of you daily trade in the stock market?
Last Post: AlexD
Posted On: 8 Hours Ago
Replies: 46
Views: 6,218
0 What song do you have stuck in your head?
Last Post: AlexD
Posted On: 8 Hours Ago
Replies: 2,569
Views: 299,903
0 how do I put engine back in frame
Last Post: Gold Member
Posted On: 8 Hours Ago
Replies: 12
Views: 299
0 Grenade plate fix with XR1200 parts...
Last Post: BKB
Posted On: 9 Hours Ago
Replies: 92
Views: 18,438
0 Hottie of the day, no nudity.
Last Post: Stairman
Posted On: 9 Hours Ago
Replies: 37,761
Views: 4,747,762
0 Compression height -- am I right?
Last Post: xlh59
Posted On: 10 Hours Ago
Replies: 52
Views: 12,469
0 Poor running bike trouble shooting help
Last Post: IXL2Relax
Posted On: 11 Hours Ago
Replies: 37
Views: 2,137
0 1972 Build thread please subscribe
Last Post: Gold Member
Posted On: 12 Hours Ago
Replies: 172
Views: 28,262
0 Allegheny National Park III
Last Post: joes95bobber
Posted On: 15 Hours Ago
Replies: 251
Views: 29,264
0 KT - 2022 - Show A Little Backbone
Last Post: IXL2Relax
Posted On: 16 Hours Ago
Replies: 38
Views: 5,965
0 DoctorMotorcycle's Turbo Kit Development for 86-03 Sportster 1200's
Last Post: DrMotorcycle
Posted On: 16 Hours Ago
Replies: 19
Views: 1,339
0 Instrument of Expression, the next chapter of the Sportster legacy
Last Post: Blackbenny
Posted On: 18 Hours Ago
Replies: 49
Views: 4,651
0 FTC - Harley-Davidson - Customers’ Right to Repair
Last Post: Nibelungen
Posted On: 19 Hours Ago
Replies: 7
Views: 333
0 Hot Rods, Rat Rods, and Customs.
Last Post: Stairman
Posted On: 19 Hours Ago
Replies: 5,307
Views: 1,186,918
0 Seeking information on long lost "race" parts
Last Post: Ferrous Head
Posted On: 23 Hours Ago
Replies: 22
Views: 1,601
0 Cutting off Mufflers...Open Pipes
Last Post: Ferrous Head
Posted On: 1 Day Ago
Replies: 4
Views: 335
0 eBay racetech emulators?
Last Post: Tomcatt
Posted On: 1 Day Ago
Replies: 1
Views: 201
0 Spool Wheel lacing
Last Post: mofosheee
Posted On: 1 Day Ago
Replies: 22
Views: 1,797
0 Sportster Oil Pressure and Dynamics
Last Post: Hippysmack
Posted On: 1 Day Ago
Replies: 318
Views: 19,475
More...
Members Birthdays
Stairman, toby61, Greywolf (73), federico (70), Big D (69), robin82732 (58), jbd777 (52), Steve3888 (50), RIORoosen (48), NXC1978 (44), JeffsJeep04 (37), Matt.loup.t
Reply
 
Share Thread Tools Display Modes
  #21  
Old 22nd May 2022
IXL2Relax's Avatar
IXL2Relax IXL2Relax is offline
XL FORUM TEAM MEMBER
 
Join Date: Feb 2013
Location: Let Freedom Ring in PA
Posts: 9,353
Sportster/Buell Model: Sportster 883►1200
Sportster/Buell Year: 1994
IXL2Relax has disabled reputation
Default

Quote:
Originally Posted by brucstoudt View Post
I'd like to replace that vacuum petcock with a Pingel.i have one on my ironhead i drain the gas every winter easily,just open the petcock and let it run out.anyone know the thread size and fuel outlet sizes on my oem petcock?
Here's the Sportsterpedia section on the Fuel Tanks & Petcocks:
http://sportsterpedia.com/doku.php/t...ck_fuel_outlet

All 86-06 tanks (non-EFI EVO engines) use 22mm petcocks. (Some Ironhead tanks use 22mm petcocks.)

There's commentary there about INSTALLING THE PETCOCK that discusses how the dual-threads work.

IXL _______ >>>> My Motorcycle Chronicles Are Here <<<<
For Sportster Tech Info:
Ride The Sportsterpedia - A Toll-Free XLForum Information Highway!
__________________
### The ride is more enjoyable to nowhere in particular! ###
Reply With Quote
  #22  
Old 4 Weeks Ago
brucstoudt's Avatar
brucstoudt brucstoudt is offline
XL FORUM TEAM MEMBER
 
Join Date: May 2010
Location: Pottstown PA.
Posts: 15,456
Sportster/Buell Model: xlch
Sportster/Buell Year: 1960
Sportster/Buell Model #2: 883 C
Sportster/Buell Year #2: '03
Reputation: 1346384
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 rocketmangb View Post
I still believe the carb farts are a lean misfire caused by hot spots in the combustion chamber which ignite a LEAN mixture when the intake valve is open.
Cool the plugs down one heat range !
i tried 1 heat range cooler today pulled the splitfires and installed NGK DCPR8E. 7E is the oem plug,not much change today,i'll stick with them for a while.still need to do the IDS setting.
__________________
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
  #23  
Old 4 Weeks Ago
IXL2Relax's Avatar
IXL2Relax IXL2Relax is offline
XL FORUM TEAM MEMBER
 
Join Date: Feb 2013
Location: Let Freedom Ring in PA
Posts: 9,353
Sportster/Buell Model: Sportster 883►1200
Sportster/Buell Year: 1994
IXL2Relax has disabled reputation
Default

I have been using the Iridium plugs - DCPR7EIX - I like them. For me, I found them to fire more smoothly than the DCPR8E.

IXL _______ >>>> My Motorcycle Chronicles Are Here <<<<
For Sportster Tech Info:
Ride The Sportsterpedia - A Toll-Free XLForum Information Highway!
Reply With Quote
  #24  
Old 4 Weeks Ago
brucstoudt's Avatar
brucstoudt brucstoudt is offline
XL FORUM TEAM MEMBER
 
Join Date: May 2010
Location: Pottstown PA.
Posts: 15,456
Sportster/Buell Model: xlch
Sportster/Buell Year: 1960
Sportster/Buell Model #2: 883 C
Sportster/Buell Year #2: '03
Reputation: 1346384
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

copy that.i noticed your bike has the 883>1200 conversion.still using the 883 heads i assume? reverse dome pistons used on the early oem conversions?
Reply With Quote
  #25  
Old 4 Weeks Ago
IXL2Relax's Avatar
IXL2Relax IXL2Relax is offline
XL FORUM TEAM MEMBER
 
Join Date: Feb 2013
Location: Let Freedom Ring in PA
Posts: 9,353
Sportster/Buell Model: Sportster 883►1200
Sportster/Buell Year: 1994
IXL2Relax has disabled reputation
Default

Quote:
Originally Posted by brucstoudt View Post
copy that.i noticed your bike has the 883>1200 conversion.still using the 883 heads i assume? reverse dome pistons used on the early oem conversions?
My build was a little more complex - I bought used Buell Lightning Heads (1200) - Bought new 1200 Wiseco pistons (ETA: Flat Top) - Had my cylinders bored specific to the new pistons - Used SE 6800 Ignition Module with a Q-curve (then retarded the plate about 4°). Cranking cylinder compression is 210psi.

Max power was 78HP with 81Tq - But I detuned it off that lean condition and it still produced 75HP with 80Tq. Quickly tops out in 3rd at 95mph.

More build details in My Motorcycle Chronicles.

IXL _______ >>>> My Motorcycle Chronicles Are Here <<<<
For Sportster Tech Info:
Ride The Sportsterpedia - A Toll-Free XLForum Information Highway!

Last edited by IXL2Relax; 4 Weeks Ago at 21:54..
Reply With Quote
  #26  
Old 4 Weeks Ago
brucstoudt's Avatar
brucstoudt brucstoudt is offline
XL FORUM TEAM MEMBER
 
Join Date: May 2010
Location: Pottstown PA.
Posts: 15,456
Sportster/Buell Model: xlch
Sportster/Buell Year: 1960
Sportster/Buell Model #2: 883 C
Sportster/Buell Year #2: '03
Reputation: 1346384
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 i'm trying to verify that 1200 pistons used with 883 heads require the dished pistons.back in the day this conversion could be done at the dealerships.i do see the dished pistons for 1200 bore on Wiseco's website.
Reply With Quote
  #27  
Old 4 Weeks Ago
John Harper John Harper is offline
Senior Master Custom Bike Builder
 
Join Date: Apr 2012
Posts: 4,163
Sportster/Buell Model: 1250
Sportster/Buell Year: 1991
Reputation: 3242262
John Harper has a reputation beyond reputeJohn Harper has a reputation beyond reputeJohn Harper has a reputation beyond reputeJohn Harper has a reputation beyond reputeJohn Harper has a reputation beyond reputeJohn Harper has a reputation beyond reputeJohn Harper has a reputation beyond reputeJohn Harper has a reputation beyond reputeJohn Harper has a reputation beyond reputeJohn Harper has a reputation beyond reputeJohn Harper has a reputation beyond repute
Default

I think there was a template used to grind out the 883 combustion chamber when they did a 1200 conversion to reduce compression ratio. My guess is they used flat top pistons if they went the grinding route, but cannot confirm.

John
Reply With Quote
  #28  
Old 4 Weeks Ago
IXL2Relax's Avatar
IXL2Relax IXL2Relax is offline
XL FORUM TEAM MEMBER
 
Join Date: Feb 2013
Location: Let Freedom Ring in PA
Posts: 9,353
Sportster/Buell Model: Sportster 883►1200
Sportster/Buell Year: 1994
IXL2Relax has disabled reputation
Default

Yes - Dished pistons are needed if using the 883 heads. This helps to make the chamber size 1200cc's and aligns the piston cavity with the 883 chamber.

HD did have a template for grinding 883 heads for use with flat-top 1200 pistons. It came with the flat-top piston kit they offered. The grinding would open the head to make it have a 1200cc chamber. I initially bought such a kit, but when I was able to buy the Lightning heads, I resold that kit. How many guys have the skill to do that modification PROPERLY?

Dished pistons became available as a better alternative. Of course, now with 1275cc kits available, that would seem to be the right direction to go if you're starting from a basic stock 883 top end...

IXL _______ >>>> My Motorcycle Chronicles Are Here <<<<
For Sportster Tech Info:
Ride The Sportsterpedia - A Toll-Free XLForum Information Highway!

Last edited by IXL2Relax; 4 Weeks Ago at 22:05..
Reply With Quote
  #29  
Old 4 Weeks Ago
brucstoudt's Avatar
brucstoudt brucstoudt is offline
XL FORUM TEAM MEMBER
 
Join Date: May 2010
Location: Pottstown PA.
Posts: 15,456
Sportster/Buell Model: xlch
Sportster/Buell Year: 1960
Sportster/Buell Model #2: 883 C
Sportster/Buell Year #2: '03
Reputation: 1346384
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

oh i've been looking at the 1275 kits.i saw Hammer's video where Aaron mentioned not to carve out the 883 combustion chambers to match the larger pistons.better squish i'm assuming the way they are? but too much compression without the dish.
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 07:02.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, vBulletin Solutions Inc.
XL Forum® - Linson Media LLC