EVO All Evo Model Discussion

Viewer be advised

Thread Tools
 
Search this Thread
 
Old Sep 21, 2025 | 06:04 PM
  #11  
Dan89FLSTC's Avatar
Dan89FLSTC
Seasoned HDF Member
Veteran: Navy
Active Streak: 30 Days
Top Answer: 3
Top Answer: 5
Joined: May 2008
Posts: 21,216
Likes: 12,811
From: South Carolina
Default

@daven9113 What year are those crankcases?
 
Reply
Old Sep 21, 2025 | 08:12 PM
  #12  
daven9113's Avatar
daven9113
Thread Starter
|
Road Master
15 Year Member
Liked
Loved
Community Favorite
Joined: Aug 2007
Posts: 942
Likes: 323
From: Grew up in Texas, moved to AZ
Default

Thanks for all your inputs? Haha…… Shrapnel all in the bottom end. Case, cylinders, heads, oil pump, and many other parts are salvageable. Crank probably rebuilt or replaced when the time comes.

Drinking tea from a KB pistons so difficult! 😂😂



 
Reply
Old Sep 21, 2025 | 08:16 PM
  #13  
Dan89FLSTC's Avatar
Dan89FLSTC
Seasoned HDF Member
Veteran: Navy
Active Streak: 30 Days
Top Answer: 3
Top Answer: 5
Joined: May 2008
Posts: 21,216
Likes: 12,811
From: South Carolina
Default

KB pistons AKA KaBoom Pistons
 
Reply
Old Sep 21, 2025 | 08:16 PM
  #14  
daven9113's Avatar
daven9113
Thread Starter
|
Road Master
15 Year Member
Liked
Loved
Community Favorite
Joined: Aug 2007
Posts: 942
Likes: 323
From: Grew up in Texas, moved to AZ
Default

Originally Posted by Dan89FLSTC
@daven9113 What year are those crankcases?
1998. Very decent shape on the outside. Will see the inside once case is split.
 
Reply
Old Sep 21, 2025 | 08:22 PM
  #15  
daven9113's Avatar
daven9113
Thread Starter
|
Road Master
15 Year Member
Liked
Loved
Community Favorite
Joined: Aug 2007
Posts: 942
Likes: 323
From: Grew up in Texas, moved to AZ
Default

Originally Posted by Dan89FLSTC
KB pistons AKA KaBoom Pistons
I hear about the warnings on this site for many years, but never had experience with them. Maybe the person who set it up did not set the correct ring gap. I haven't really investigated, but the broken piston did have a broken oil ring. I will have to relook at it closer. They were KB standard size pistons.
 
Reply
Old Sep 22, 2025 | 08:19 AM
  #16  
Bubba Zanetti's Avatar
Bubba Zanetti
Seasoned HDF Member
15 Year Member
Liked
Loved
Community Favorite
Joined: Nov 2006
Posts: 21,174
Likes: 19,347
From: The Wasteland
Default

That should keep you busy this winter.
 
Reply
Old Sep 22, 2025 | 09:17 AM
  #17  
Paintslinger16's Avatar
Paintslinger16
Stellar HDF Member
Active Streak: 120 Days
Loved
Community Favorite
Top Answer: 5
Joined: Aug 2018
Posts: 2,425
Likes: 2,673
From: Milwaukee, WI
Default

Originally Posted by daven9113
Thanks for all your inputs? Haha…… Shrapnel all in the bottom end. Case, cylinders, heads, oil pump, and many other parts are salvageable. Crank probably rebuilt or replaced when the time comes.

Drinking tea from a KB pistons so difficult! 😂😂

oh wow what you have there is the KB Blower piston, no not a supercharger, just rev’er up and watch it blow
 
Reply
Old Sep 22, 2025 | 10:00 AM
  #18  
eighteight's Avatar
eighteight
Seasoned HDF Member
Joined: Oct 2019
Posts: 10,883
Likes: 7,512
From: OH
Default

[QUOTE=daven9113;22121068 Crank probably rebuilt or replaced when the time comes.


 
Reply
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

10 Most Awkward-Looking Motorcycles Ever Built

 Verdad Gallardo
story-1

Jason Momoa Is Turning Classic Harleys Into PHEVs

 Verdad Gallardo
story-2

Harley-Davidson Fat Boy Becomes a Dark, Decepticon-Inspired Custom

 Verdad Gallardo
story-3

6 Weirdest Harley-Davidsons Ever Sold to the Public

 Verdad Gallardo
story-4

7 Times Harley-Davidson Chucked Tradition Out the Window

 Verdad Gallardo
story-5

7 Surprising Harley-Davidson Products that Are Not Motorcycles

 Verdad Gallardo
story-6

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-7

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-8

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

 Verdad Gallardo
story-9

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

 Verdad Gallardo
Old Sep 22, 2025 | 11:41 AM
  #19  
Joe12RK's Avatar
Joe12RK
Seasoned HDF Member
10 Year Member
Loved
Community Favorite
Top Answer: 1
Joined: Jun 2012
Posts: 6,165
Likes: 2,578
From: CT/FL
Default

^^^ I had a shop install the shovelhead version on my 82 FXR. They measured it out and were impressed.
 
Reply
Old Sep 22, 2025 | 04:37 PM
  #20  
Schex's Avatar
Schex
Club Member
15 Year Member
Joined: Apr 2011
Posts: 5,828
Likes: 7,859
From: SE Louisiana
Riders Club Member
Default

Originally Posted by Dan89FLSTC
KB pistons AKA KaBoom Pistons
The UEM (United Engine & Machine) KB forged 4032 are some real good pistons.
Anything hypereutectic are the problem child.
 

Last edited by Schex; Sep 22, 2025 at 04:40 PM.
Reply



All times are GMT -5. The time now is 09:20 AM.

story-0
10 Most Awkward-Looking Motorcycles Ever Built

Slideshow: Not every motorcycle can be a design icon, and these machines prove that bold styling doesn't always age gracefully.

By Verdad Gallardo | 2026-06-12 11:58:41


VIEW MORE
story-1
Jason Momoa Is Turning Classic Harleys Into PHEVs

Slideshow: Jason Momoa's latest restoration project blends 1920s Harley-Davidsons with modern electric technology, creating some of the most unusual hybrid motorcycles ever built.

By Verdad Gallardo | 2026-06-10 17:18:58


VIEW MORE
story-2
Harley-Davidson Fat Boy Becomes a Dark, Decepticon-Inspired Custom

Slideshow: Killer Custom's latest build relies on styling changes rather than performance upgrades, giving the cruiser an entirely different personality.

By Verdad Gallardo | 2026-06-03 18:28:05


VIEW MORE
story-3
6 Weirdest Harley-Davidsons Ever Sold to the Public

Slideshow: From military-inspired singles to scooters and three-wheel utility vehicles, these Harleys took the company far outside its comfort zone.

By Verdad Gallardo | 2026-06-02 18:34:10


VIEW MORE
story-4
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-5
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-6
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-7
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-8
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-9
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