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 - Bottom End
XLF Blogs XLF Arcade XLF Disclaimer/Privacy Statement/Terms Of Use

Sportster Motorcycle - Bottom End Cams, Cases, Gears, Flywheel, Piston Conecting Rods, Oil Pump, etc...

Active Threads
0 Hottie of the day, no nudity.
Last Post: Stairman
Posted On: 1 Minute Ago
Replies: 15,336
Views: 1,473,075
0 never mind
Last Post: Hippysmack
Posted On: 2 Minutes Ago
Replies: 73
Views: 3,680
0 Swingarms
Last Post: Hippysmack
Posted On: 7 Minutes Ago
Replies: 5
Views: 193
0 hi all
Last Post: Bow only
Posted On: 17 Minutes Ago
Replies: 8
Views: 36
0 Sportster Crankcase Pressure / Engine Breathing / Wetsumping and Mods
Last Post: Hippysmack
Posted On: 35 Minutes Ago
Replies: 889
Views: 40,229
0 You can't tour on that!!!
Last Post: Graywolf
Posted On: 1 Hour Ago
Replies: 271
Views: 85,674
0 the roadster make more power ?
Last Post: Tomcatt
Posted On: 1 Hour Ago
Replies: 57
Views: 1,862
0 question for our machinists
Last Post: IronMick
Posted On: 1 Hour Ago
Replies: 10
Views: 337
0 1982 XLH 1000 With 23 Original Miles
Last Post: IronMick
Posted On: 1 Hour Ago
Replies: 9
Views: 423
0 supply oil line seeping
Last Post: hammer6315
Posted On: 1 Hour Ago
Replies: 5
Views: 200
0 Question on priming motor for kickstart
Last Post: GA_Ironhead
Posted On: 2 Hours Ago
Replies: 11
Views: 526
0 Official XL Forum Random Image Thread (NO NUDITY!)
Last Post: Graywolf
Posted On: 2 Hours Ago
Replies: 45,683
Views: 7,220,391
0 Interview of My Expieriences Riding in the Iron Butt Rally
Last Post: ParrotHead
Posted On: 2 Hours Ago
Replies: 6
Views: 189
0 Hydraulic Lift For XL
Last Post: NLXL
Posted On: 2 Hours Ago
Replies: 9
Views: 217
0 3.5" straight riser
Last Post: Flame__
Posted On: 2 Hours Ago
Replies: 0
Views: 20
0 Keep & Kill
Last Post: Graywolf
Posted On: 2 Hours Ago
Replies: 14,598
Views: 815,816
0 Race tracks are harsh environments
Last Post: rokytnji
Posted On: 3 Hours Ago
Replies: 3
Views: 174
0 Fact or fiction?
Last Post: bustert
Posted On: 3 Hours Ago
Replies: 20
Views: 727
0 Crusty's Travels
Last Post: SonWon
Posted On: 7 Hours Ago
Replies: 2,652
Views: 358,502
12 Lets see the "C's" XLC's that is. Pics Please!
Last Post: glbsportster
Posted On: 10 Hours Ago
Replies: 1,212
Views: 448,727
0 Cometic Air Cleaner Gasket?
Last Post: sml1226
Posted On: 10 Hours Ago
Replies: 1
Views: 59
0 Fork Upgrade to 39mm. Is This Possible/Wise
Last Post: BKB
Posted On: 12 Hours Ago
Replies: 7
Views: 161
0 Very Loud Backfiring (among other things)
Last Post: Nacs
Posted On: 14 Hours Ago
Replies: 15
Views: 409
0 Wanna build a cheap big bore stroker ?
Last Post: Maxeffort
Posted On: 14 Hours Ago
Replies: 35
Views: 1,295
0 Pre-rubber stock exhaust to '08 heads and cylinders
Last Post: olrider
Posted On: 15 Hours Ago
Replies: 7
Views: 180
5 Crankcase Oil Drain Plug
Last Post: Hippysmack
Posted On: 16 Hours Ago
Replies: 13
Views: 463
0 Winter riding clothes
Last Post: sportsterpaul
Posted On: 16 Hours Ago
Replies: 34
Views: 3,274
0 Charging cell phone when camping?
Last Post: kobra50
Posted On: 17 Hours Ago
Replies: 68
Views: 19,748
5 Your worst car?
Last Post: Nibelungen
Posted On: 17 Hours Ago
Replies: 299
Views: 34,155
0 Ride Report w/ 100's of Photos & Video - 8 States, 2 Countries & 2 Big Surprises
Last Post: DK Custom
Posted On: 17 Hours Ago
Replies: 28
Views: 793
More...
Sponsored Links
Reply
 
Share Thread Tools Display Modes
  #11  
Old 12th March 2009
FoxsterUK's Avatar
FoxsterUK FoxsterUK is offline
Senior Master Custom Bike Builder
 
Join Date: Apr 2008
Location: Suffolk, UK
Posts: 3,558
Sportster/Buell Model: XL1200R
Sportster/Buell Year: 2005
Reputation: 44434
FoxsterUK is a splendid one to beholdFoxsterUK is a splendid one to beholdFoxsterUK is a splendid one to beholdFoxsterUK is a splendid one to beholdFoxsterUK is a splendid one to beholdFoxsterUK is a splendid one to beholdFoxsterUK is a splendid one to beholdFoxsterUK is a splendid one to beholdFoxsterUK is a splendid one to beholdFoxsterUK is a splendid one to beholdFoxsterUK is a splendid one to behold
Default

Quote:
Originally Posted by roadtrip View Post
Why wont N4's fit..lift is .490 which is below .500 shouldn't be a problem with a stock head gasket. N8, N9, N6 are not bolt in's.
Dunno. I'm only repeating what it says on the Andrews site...

Quote:
Cylinder heads for 2004 and later engines are different from earlier Sportsters. For 2004 and later engines, N3
cams will bolt in. ALL OTHER GRINDS will require head modifications for installation.
Otherwise I would have thought N2s and N4s would work

Fox
Reply With Quote
  #12  
Old 12th March 2009
AB,Frank's Avatar
AB,Frank AB,Frank is offline
serial Canuckian
 
Join Date: Feb 2008
Location: Alberta ,can.
Posts: 4,767
Sportster/Buell Model: XL1250C
Sportster/Buell Year: 2008
Reputation: 673495
AB,Frank has a reputation beyond reputeAB,Frank has a reputation beyond reputeAB,Frank has a reputation beyond reputeAB,Frank has a reputation beyond reputeAB,Frank has a reputation beyond reputeAB,Frank has a reputation beyond reputeAB,Frank has a reputation beyond reputeAB,Frank has a reputation beyond reputeAB,Frank has a reputation beyond reputeAB,Frank has a reputation beyond reputeAB,Frank has a reputation beyond repute
Default

Same here,I have this sheet with most of the grinds and that's what it said..who knows any more...by the way did you find your switches?



Quote:
Originally Posted by FoxsterUK View Post
Dunno. I'm only repeating what it says on the Andrews site...

Otherwise I would have thought N2s and N4s would work

Fox
__________________
In three words I can sum up everything I've learned about life: it goes on.
Reply With Quote
  #13  
Old 12th March 2009
FoxsterUK's Avatar
FoxsterUK FoxsterUK is offline
Senior Master Custom Bike Builder
 
Join Date: Apr 2008
Location: Suffolk, UK
Posts: 3,558
Sportster/Buell Model: XL1200R
Sportster/Buell Year: 2005
Reputation: 44434
FoxsterUK is a splendid one to beholdFoxsterUK is a splendid one to beholdFoxsterUK is a splendid one to beholdFoxsterUK is a splendid one to beholdFoxsterUK is a splendid one to beholdFoxsterUK is a splendid one to beholdFoxsterUK is a splendid one to beholdFoxsterUK is a splendid one to beholdFoxsterUK is a splendid one to beholdFoxsterUK is a splendid one to beholdFoxsterUK is a splendid one to behold
Default

Quote:
Originally Posted by roadtrip View Post
...by the way did you find your switches?
No. I keep plugging away at that one without getting a good solution. I was even looking at some ex-US airforce voice control kit but decided that was getting a bit silly

Fox
Reply With Quote
  #14  
Old 12th March 2009
aka_Matt's Avatar
aka_Matt aka_Matt is offline
Chief Harley Engineer
 
Join Date: Nov 2004
Location: NY
Posts: 527
Sportster/Buell Model: xl1200c
Sportster/Buell Year: '04
Reputation: 203
aka_Matt is on a distinguished roadaka_Matt is on a distinguished roadaka_Matt is on a distinguished road
Default

the 'W' cams specs are: 215/230, .474/.475...
andrews site is messed up, they have no clue what fits what...
as far as "bolt-in" goes, its all based on the older heads which had springs only good for .500 lift, the new XB heads springs r good to about .550 lift, the only problem u have to watch out for is the piston to exh valve clearance, like with the SE536 cam and maybe the N6/N8 cams...
__________________
'04 HD XL1200C... Blue/Orange flames, Bobtail rear fender, Custom front fender, 6 spoke front wheel, Chrome everything... Rinehart 2-1, Mid-Controls, Deuce Wheel w/ 160/70x17, Ness BS, 74hp/85tq... FOR SALE
Reply With Quote
  #15  
Old 12th March 2009
LLOYD883's Avatar
LLOYD883 LLOYD883 is offline
Flat Track Champion
 
Join Date: Aug 2006
Location: Montreal, QC, Cda
Posts: 640
Sportster/Buell Model: xl883c
Sportster/Buell Year: 2005
Reputation: 146875
LLOYD883 has a brilliant futureLLOYD883 has a brilliant futureLLOYD883 has a brilliant futureLLOYD883 has a brilliant futureLLOYD883 has a brilliant futureLLOYD883 has a brilliant futureLLOYD883 has a brilliant futureLLOYD883 has a brilliant futureLLOYD883 has a brilliant futureLLOYD883 has a brilliant futureLLOYD883 has a brilliant future
Default

Here is a little "guide" for the RPM at which the engine gets "on the cam" based on the intake closing angle.
This gives an indication of approximately where the engine begins to yield strong torque.

25* - 2000RPM ± W grind = 25*
30* - 2400RPM ± N3 grind = 33*
35* - 3000RPM ± N2 grind = 38*
40* - 3600RPM ± D grind = 41*
45* - 4000RPM ± N4 grind = 46*
50* - 4500RPM ± XR grind = 48*

Information taken from :
sportster.org, nhrsperformance.com, nightrider.com and andrews cams

I have taken the liberty to extrapolate for the lower end of the table and I have approximated to fit existing grinds into the given RPM ranges.

There are of course other influential factors such as :
- exhaust valve opening angle
- valve overlap
- valve durations
- valve valve lift
- lobe separation angle
__________________
2005 883XLC - 42 slow jet, 2 1/2 turns out - N65A needle shimmed 0.030" with stock 170 main jet - 07 1200 W cams - mildly ported stock heads - Arlen Ness Big Sucker air cleaner with HD round nostalgia cover - Khrome Werks 3" tapered slip-ons - SE 1200 ignition module - microTach - Mustang "solo tripper" seat - 12 1/2" Progressive 412 chrome rear shocks.
Reply With Quote
  #16  
Old 13th March 2009
aka_Matt's Avatar
aka_Matt aka_Matt is offline
Chief Harley Engineer
 
Join Date: Nov 2004
Location: NY
Posts: 527
Sportster/Buell Model: xl1200c
Sportster/Buell Year: '04
Reputation: 203
aka_Matt is on a distinguished roadaka_Matt is on a distinguished roadaka_Matt is on a distinguished road
Default

whats an "XR" cam? doesn't the XR use the "E" cam? the "E" cam has a 44 IC...
Reply With Quote
  #17  
Old 13th March 2009
LLOYD883's Avatar
LLOYD883 LLOYD883 is offline
Flat Track Champion
 
Join Date: Aug 2006
Location: Montreal, QC, Cda
Posts: 640
Sportster/Buell Model: xl883c
Sportster/Buell Year: 2005
Reputation: 146875
LLOYD883 has a brilliant futureLLOYD883 has a brilliant futureLLOYD883 has a brilliant futureLLOYD883 has a brilliant futureLLOYD883 has a brilliant futureLLOYD883 has a brilliant futureLLOYD883 has a brilliant futureLLOYD883 has a brilliant futureLLOYD883 has a brilliant futureLLOYD883 has a brilliant futureLLOYD883 has a brilliant future
Default

Quote:
Originally Posted by aka_Matt View Post
whats an "XR" cam? doesn't the XR use the "E" cam? the "E" cam has a 44 IC...
Here are the specs on the XR1200 cams as per the recent article in American Iron Magazine :
Intake Valve ;
open - 25*, close - 48*, duration - 252*, lift - 0.550"
Exhaust Valve ;
open - 60*, close - 13*, duration - 252*, lift - 0.550"
Reply With Quote
  #18  
Old 7th November 2009
DjGriff's Avatar
DjGriff DjGriff is offline
Biker
 
Join Date: Aug 2009
Location: the San Fernando Valley
Posts: 17
Sportster/Buell Model: 1200s,
Sportster/Buell Year: 1996
Sportster/Buell Model #2: xl1000
Sportster/Buell Year #2: 1974
Reputation: 10
DjGriff is an unknown quantity at this point
Default

Great read but i think his view on LSA(;lobe separation angle) is contradictive and off. he states that lower lsa increases cranking pressure. how can that be if more overlap occurs(which it does) in turn bleeding off effective low speed pressure ie.. cams w/more overlap require higher static compression #s. this is done for better top end#s both in torque and hp but further up the rpm range I think this was explained correctly at some point in the post but gets mixed up in the section where he lists the general characteristics for Tight(more overlap) and Wide LSA (less overlap) The article is a very good tech info read other than the murky LSA info Getting the lsa right is as important as any cam spec in regards to intended application. Look at #s on chevy factory HP cams and you will see some(most) have large effectve duration#s(@.050) but have wider LSA angles to help drivability(more vacume smoother idle)as compared to after market performance which all have narrower LSA given equivalent duration#s when fuel injection first replaced carbs one of the key elements in designing performance cams was in wider LSA angles(less overlap) it is the overlap that is the issue More overlap = lower cranking pres to get better flling at higher engine speeds,less vacume at idle and less low end response(less signal at carb)for the gain at top end this is why higher staic ratios are used ,the opposite is true of Less overlap(larger LSA)will idle smother ,more vacume and generaly have a wider powerband but at the loss of some power up top. I can state some more LSA guidlines but i think the author or poster should re-read and edit the LSA section for the contradictive info or just possibly the wording. I am not an engineer but i do have a grip on four stroke engine theory and camshaft events for the pupose of maximizing out put for a specific use(tow,street,drag,marine ect) If i misread or misunderstand any of this please excuse my ignorance and let me know how LSA realy relates to engine dynamics Just a die hard motor head trying to get it right Thanks
Reply With Quote
Sponsored Links
  #19  
Old 13th April 2013
keithnh's Avatar
keithnh keithnh is offline
XL FORUM TEAM MEMBER
 
Join Date: Mar 2011
Posts: 131
Sportster/Buell Model: xlh
Sportster/Buell Year: 1987
Other Motorcycle Model: BMW R65
Other Motorcycle Year: 84
Reputation: 10
keithnh is an unknown quantity at this point
Default

Think I will have to read this thread about 10 times ... before it sticks. I am a novice putting my 1st HD together and trying to plan a successful completion. I appear to have some rare cams I got in a HD box marked 25633-86A 2/88 . I believe these to be SE .536 4-spd cams for 86-90. I dont have a spec sheet indicating specific timing events or even lift and duration particulars. They are to be used in 86 883 cases with 86 1100 heads and NOS 88 wheels with S+S pinion shaft installed and static balanced. I wanted to boost the CR and give the motor a wide range performance cam with NOS 1200 slugs. I'm learning about the sensitive relation between compression-cam size-head flow and exhaust flow hoping I dont make a serious boo-boo without having access to a flow bench. I really wish I had the cam sheet on these cams but they are outdated even tho NOS.

I also havent chosen my lifters yet and wondered if I might change my internal engine part strategy from "HD or S+S parts only" to "HD or S+S or Jims parts only". I see advertised various lifter types making me think they vary in duration like Rhoads lifters for cars. Since it appears my cam and heads will be stronger in the higher rpm range it would seem a little less lift and duration at lower rpm might help torque and throttle response down low. Was thinking "Jims Hydrosolids" might be the ticket vs S+S or S+S H2LT but havent seen anything explaining the real effects of each over the entire rpm range so I could make a good judgement. Wish I could find info on that as well.

Would be a nice addition to this thread that would help me. If I find them Ill post them on here for s___ts and giggles.
Reply With Quote
  #20  
Old 15th July 2014
hottangv8 hottangv8 is offline
Biker
 
Join Date: Jul 2014
Posts: 4
Sportster/Buell Model: 1200 custom
Sportster/Buell Year: 2009
Reputation: 10
hottangv8 is an unknown quantity at this point
Default

geeeeeeee, now i'm totaly confused about what i need to do with my 09 1200 sporty. like to cruise on x-way between 70-80 and want some grunt when i twist the throttle open without having to down-shift, any advice for me?
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 17:49.


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