Harley Davidson Forums

Dyna Glide Models Super Glide, Super Glide Sport, Super Glide Custom, Dyna Glide Convertible, Super Glide T-Sport, Dyna Glide Police, Dyna Switchback, Low Rider, Street Bob, Fat Bob and Wide Glide.
Sponsored by:
Sponsored by:

Questions about engine

Thread Tools
 
Search this Thread
 
Old Aug 12, 2012 | 10:39 AM
Share
  #1  
Canes's Avatar
Canes
Thread Starter
|
6th Gear
Joined: Aug 2012
Posts: 11
Likes: 0
From: NC
Default Questions about engine
Ok i am a new Harley rider (v-twin noob) and i bought a 99 FXDX with some mods. The dealer couldnt tell me anything so maybe some of you can. I will post some pictures and see whats what.





located on bottom of heads no idea what the emblem is?




Whats this blue button?
 
Reply
0
Old Aug 12, 2012 | 10:47 AM
Share
  #2  
thedonthere's Avatar
thedonthere
Outstanding HDF Member
Joined: Dec 2008
Posts: 2,419
Likes: 1
From: Ashland Ore.
Default
blue buttons are compression releases and the stamp on the bottom of your CYLINDERS not your heads is most likely from the machinist who bored the cylinders. You may have something there............
 
Reply
0
Old Aug 12, 2012 | 10:52 AM
Share
  #3  
weekender2098's Avatar
weekender2098
Tourer
Joined: Feb 2010
Posts: 267
Likes: 1
Default
thedonthere is correct.
 
Reply
0
Old Aug 12, 2012 | 10:54 AM
Share
  #4  
dyna rider's Avatar
dyna rider
Club Member
Veteran: Army
Joined: Dec 2007
Posts: 4,192
Likes: 168
From: Knoxville, Tn
Default Fxdx
Aside from the cowbell horn cover being tilted forward, it would seem to have high compression pistons installed. When you push down on the blue buttons, you should hear a click. You do this before you start the engine,each time, to make it easier on the starter motor.
I agree with the prior post about the machinist marks.
 
Reply
0
Old Aug 12, 2012 | 11:00 AM
Share
  #5  
Bone11B's Avatar
Bone11B
Road Captain
Joined: Dec 2008
Posts: 601
Likes: 0
From: Texas Nomad
Default
What ever you do dont push that blue button!
 
Reply
0
Old Aug 12, 2012 | 11:01 AM
Share
  #6  
Bone11B's Avatar
Bone11B
Road Captain
Joined: Dec 2008
Posts: 601
Likes: 0
From: Texas Nomad
Default
Just kidding they are manual compression releases and that is some Zippers Big Bore Cylinder Kit.
 
Reply
0
Old Aug 12, 2012 | 11:19 AM
Share
  #7  
Canes's Avatar
Canes
Thread Starter
|
6th Gear
Joined: Aug 2012
Posts: 11
Likes: 0
From: NC
Default
Wow guys thanks for the quick response. Now just need to figure out what size the previous owner took the Zippers cylinder and heads to.

Dyna Rider which chapter you with?
 
Reply
0

Trending Topics

Old Aug 12, 2012 | 12:47 PM
Share
  #8  
misfitJason's Avatar
misfitJason
Seasoned HDF Member
15 Year Member
Liked
Loved
Community Favorite
Joined: Dec 2010
Posts: 6,849
Likes: 1,389
From: Florida
Default
They are zippers cylinders with hi comp pistons more than likely
 
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
Old Aug 12, 2012 | 02:10 PM
Share
  #9  
Robtarra39's Avatar
Robtarra39
Road Warrior
Joined: Oct 2010
Posts: 1,554
Likes: 52
From: Ottawa Canada
Default
Most likely a 95 inch big bore kit with high compression pistons, bet it sounds real nice and throaty
 
Reply
0
Old Aug 12, 2012 | 02:39 PM
Share
  #10  
bigdaddy33's Avatar
bigdaddy33
Elite HDF Member
Joined: Apr 2009
Posts: 4,082
Likes: 11
From: Long Island, NY
Default
The bike may have a 107" Zippers kit. They use compression releases in the 107".

http://zippersperformance.com/catalo...=862&prod=1556

If that's what you have, it's a real nice set up.
 
Reply
0
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Fs 95" big bore cylinders and pistons
bigpete1
Dyna Parts
2
Dec 28, 2017 05:32 PM
And so it begins.. My 2013 Breakout FM 107" Build
Pa-Rider
Softail Models
53
Mar 22, 2014 04:57 AM
107" all bore rebuild + NOS!!
redrubicon2004
Dyna Glide Models
36
Sep 29, 2013 02:22 AM
Heads
cpc0812
Softail Parts
0
Oct 13, 2012 07:26 AM
Ported Heads
detonator
Softail Models
4
Sep 3, 2007 01:40 AM
Back to Subforum
Dyna Glide Models
View Next Unread
New Wide Glide




Advanced Search
Reply Closed Thread Share
Forum Jump

All times are GMT -5. The time now is 09:12 PM.

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