Rear cylinder cooler than the front - Harley Davidson Forums

Sportster Models 883, 883 Custom, 1200 Custom, 883L, 1200L, 1200S, 1200 Roadster, XR1200, and the Nightster.
Sponsored by:
Sponsored by:

Rear cylinder cooler than the front

Thread Tools Search this Thread
Old 09-21-2010, 09:32 PM
Bedore Bedore is offline
One Of The Regulars
Thread Starter
Join Date: May 2010
Location: USA
Posts: 141
Thanks: 0
Thanked 1 Time in 1 Post
Default Rear cylinder cooler than the front

I noticed today during an extended warmup that the front cylinder was running hotter than the rear cylinder. I couldnt touch the front but could lay my hand on the rear jug with no harm of burning my hand.

I do not have a IR Thermo to really measure temps well once it's been run, but I figured that during warm up they would both at least share similiar temps. Does this indicate a problem? Exhaust leak maybe ?
Reply With Quote
Old 09-21-2010, 11:35 PM
WRAITH's Avatar
WRAITH WRAITH is offline
Road Warrior
Join Date: Sep 2006
Location: Mission,BC.Canada
Posts: 1,278
Thanks: 0
Thanked 0 Times in 0 Posts

The front cylinder runs lean compared to the rear. A lean cylinder runs hotter than a rich one. It is normal.
Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
cylinder temps natedog_37 Dyna Glide Models 11 08-30-2016 11:44 AM
Exhaust pressure DanTheBetterMan Sportster Models 12 08-26-2016 09:07 PM
EITMS Rear Cylinder Deactivated? BinIdaho Tri Glide & Freewheeler Models 9 07-07-2014 07:38 PM
Hot Ultra? Livet Touring Models 6 06-06-2014 05:48 AM
Engine Knock bshapiro Exhaust System Topics 27 03-27-2014 02:54 PM

back, cooler, cylinder, cylinders, cyliner, davidson, evo, front, harley, hotter, rear, run, runs, runshotter, sportster, supposed

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

All times are GMT -5. The time now is 05:30 PM.

  • Ask a Question
    Get answers from community experts
What's your question?