Harley Davidson Forums

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

Engine knock

Thread Tools
 
Search this Thread
 
Old May 6, 2019 | 03:34 PM
Share
  #1  
Nick Palladino's Avatar
Nick Palladino
Thread Starter
|
5th Gear
Joined: May 2019
Posts: 9
Likes: 0
From: nashville
Default Engine knock
Just rebuilt top end of my 1994 sportster 1200. Runs great but knocking sound from engine. Cyclinders were bored and valves redone at machine shop. Knock is barely noticeable in neutral but when you put in gear and take of it gets worse. Any advice. Also noticed after only a few miles after rebuild oil in intake when I took off carb.
 
Reply
0
Old May 6, 2019 | 03:55 PM
Share
  #2  
HOTLAP's Avatar
HOTLAP
Seasoned HDF Member
15 Year Member
Liked
Loved
Community Favorite
Joined: Feb 2007
Posts: 5,067
Likes: 394
From: Edmonton Alberta Canada
Default
You sure you didn't mix up the push rods? they are different lengths.
 
Reply
0
Old May 6, 2019 | 03:58 PM
Share
  #3  
Nick Palladino's Avatar
Nick Palladino
Thread Starter
|
5th Gear
Joined: May 2019
Posts: 9
Likes: 0
From: nashville
Default
Originally Posted by HOTLAP
You sure you didn't mix up the push rods? they are different lengths.
No the one with three stripes is closest to exhaust one stripe closest to intake.
 
Reply
0
Old May 6, 2019 | 04:07 PM
Share
  #4  
gerald martin's Avatar
gerald martin
Road Warrior
10 Year Member
Photogenic
Liked
Top Answer: 1
Joined: Nov 2015
Posts: 1,279
Likes: 467
From: anywhere
Default
read about taking pistons off on the hammer performance website. Mabey that's what happened to yours
 
Reply
0
Old May 6, 2019 | 04:09 PM
Share
  #5  
HOTLAP's Avatar
HOTLAP
Seasoned HDF Member
15 Year Member
Liked
Loved
Community Favorite
Joined: Feb 2007
Posts: 5,067
Likes: 394
From: Edmonton Alberta Canada
Default
Pick up a cheap stethoscope from harbour freight and see if you can pinpoint where the knock is coming from.
 
Reply
0
Old May 6, 2019 | 04:58 PM
Share
  #6  
Nick Palladino's Avatar
Nick Palladino
Thread Starter
|
5th Gear
Joined: May 2019
Posts: 9
Likes: 0
From: nashville
Default
Originally Posted by HOTLAP
Pick up a cheap stethoscope from harbour freight and see if you can pinpoint where the knock is coming from.
did that sounds like front cylinder.
 
Reply
0
Old May 6, 2019 | 05:00 PM
Share
  #7  
Nick Palladino's Avatar
Nick Palladino
Thread Starter
|
5th Gear
Joined: May 2019
Posts: 9
Likes: 0
From: nashville
Default
Originally Posted by gerald martin
read about taking pistons off on the hammer performance website. Mabey that's what happened to yours

I installed new pistons and rings
 
Reply
0

Trending Topics

Old May 6, 2019 | 05:12 PM
Share
  #8  
HOTLAP's Avatar
HOTLAP
Seasoned HDF Member
15 Year Member
Liked
Loved
Community Favorite
Joined: Feb 2007
Posts: 5,067
Likes: 394
From: Edmonton Alberta Canada
Default
Maybe a wrist pin clip on the front piston not installed properly?
 
Reply
0
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

7 Times Harley-Davidson Chucked Tradition Out the Window

 Verdad Gallardo
story-1

7 Surprising Harley-Davidson Products that Are Not Motorcycles

 Verdad Gallardo
story-2

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-3

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-4

Killer Custom's Jail Break Is The Breakout That Refused to Blend In

 Verdad Gallardo
story-5

Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

 Verdad Gallardo
story-6

Harley-Davidson Reveals Super Cool Cafe Racer Concept

 Verdad Gallardo
story-7

Engraved Rebellion: Inside Bundnerbike's Glam Rock II

 Verdad Gallardo
story-8

10 Motorcycles You Should Never Buy

 Joe Kucinski
story-9

10 Things Harley-Davidson Needs to Fix in 2026

 Verdad Gallardo
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Engine knock
Nick Palladino
General Harley Davidson Chat
11
May 6, 2019 08:43 PM
Value of '67 Ironhead
raye321
Ironhead
5
Mar 29, 2015 11:02 PM
Piston Slap Questions
Krazyshark
Ironhead
9
Jan 23, 2012 07:51 PM
rough engine
Stuart Dailly
Exhaust System Topics
9
Jul 30, 2010 08:23 AM
timing
ardmorejoe23x
Sportster Models
0
Jul 10, 2006 12:05 AM
Back to Subforum
Sportster Models
View Next Unread
crash bar with forward controls




Advanced Search
Reply Closed Thread Share
Forum Jump

All times are GMT -5. The time now is 02:48 AM.

story-0
7 Times Harley-Davidson Chucked Tradition Out the Window

Slideshow: Harley-Davidson built its reputation on nostalgia, but every so often, the company took a hard left turn into the future.

By Verdad Gallardo | 2026-05-20 11:18:19


VIEW MORE
story-1
7 Surprising Harley-Davidson Products that Are Not Motorcycles

Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.

By Verdad Gallardo | 2026-04-29 16:50:35


VIEW MORE
story-2
8 Best Harley-Davidson Motorcycles Ever

Slideshow: Not every Harley gets it right, but these are the ones that genuinely earned their reputation.

By Pouria Savadkouei | 2026-04-15 14:23:21


VIEW MORE
story-3
10 Worst Harley-Davidson Motorcycles Ever

Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.

By Pouria Savadkouei | 2026-04-01 20:01:09


VIEW MORE
story-4
Killer Custom's Jail Break Is The Breakout That Refused to Blend In

Slideshow: Killer Custom's "Jail Breaker" build focuses more on stance and visual aggression than mechanical overhaul.

By Verdad Gallardo | 2026-03-18 19:20:32


VIEW MORE
story-5
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.

By Verdad Gallardo | 2026-03-07 16:15:30


VIEW MORE
story-6
Harley-Davidson Reveals Super Cool Cafe Racer Concept

Slideshow: Harley-Davidson's new RMCR concept revives the café racer formula with modern hardware-and it may be exactly the reset the company needs.

By Verdad Gallardo | 2026-03-04 12:23:37


VIEW MORE
story-7
Engraved Rebellion: Inside Bundnerbike's Glam Rock II

Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.

By Verdad Gallardo | 2026-02-24 18:19:44


VIEW MORE
story-8
10 Motorcycles You Should Never Buy

Slideshow: There is no shortage of great motorcycles to buy, but we would avoid these ten.

By Joe Kucinski | 2026-02-19 14:50:51


VIEW MORE
story-9
10 Things Harley-Davidson Needs to Fix in 2026

Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.

By Verdad Gallardo | 2026-01-13 18:33:17


VIEW MORE