Harley Davidson Forums

EVO All Evo Model Discussion

Valve guide honing

Thread Tools
 
Search this Thread
 
Old Jan 24, 2020 | 08:22 PM
Share
  #1  
al0311's Avatar
al0311
Thread Starter
|
Advanced
Joined: Feb 2019
Posts: 58
Likes: 0
From: philadelphia
Default Valve guide honing
Hey guys I scratched the inside of my valve guide. A friend of mine works in a machine shop and said he can hone them. My question is what diameter cant he go over honing them ? Or what is the recommended diameter ? The scratchs themselves dont appear that deep in the guide and the valve moves relatively freely. Should I even go through doing this or just put the valves in and run it? I just dont want to get it all together and end up having to take it apart again. Thanks in advance
 
Reply
0
Old Jan 24, 2020 | 08:22 PM
Share
  #2  
al0311's Avatar
al0311
Thread Starter
|
Advanced
Joined: Feb 2019
Posts: 58
Likes: 0
From: philadelphia
Default
Oh Im sorry its a 1987 flhtc evo .
 
Reply
0
Old Jan 25, 2020 | 07:11 AM
Share
  #3  
t150vej's Avatar
t150vej
HDF Community Team
20 Year Member
Community Favorite
Top Answer: 3
Joined: Dec 2005
Posts: 5,442
Likes: 2,638
From: NC USA
Default
The valve stems are .301 (usually plus or minus .00025)

Clearance should be .0008 - .0026 intake, .0015 - .0033 exhaust. Wear limits are .003/.004 respectively.

Actually measuring the valve guides requires very expensive tools and most just go by "feel."

Try a .308 caliber bore brush (oiled) on a drill for a half dozen strokes, then see how they feel...
 
Last edited by t150vej; Jan 25, 2020 at 07:14 AM.
Reply
0
Old Jan 25, 2020 | 07:46 AM
Share
  #4  
al0311's Avatar
al0311
Thread Starter
|
Advanced
Joined: Feb 2019
Posts: 58
Likes: 0
From: philadelphia
Default
Thank you for the feed back
 
Reply
0
Old Jan 25, 2020 | 09:22 AM
Share
  #5  
98hotrodfatboy's Avatar
98hotrodfatboy
Seasoned HDF Member
15 Year Member
Liked
Loved
Joined: Mar 2010
Posts: 21,187
Likes: 7,690
From: Poolville
Default
I wouldn't take a chance and take the head to a reputable Indy and have the guide replaced with good bronze guides. Parts might be $25 and labor one hour.. why take a chance..
 
Reply
0
Old Jan 25, 2020 | 09:26 AM
Share
  #6  
Racepres's Avatar
Racepres
Seasoned HDF Member
Community Builder
Loved
Community Favorite
Top Answer: 1
Joined: Jul 2014
Posts: 8,636
Likes: 3,398
From: Cental, MI
Default
Originally Posted by 98hotrodfatboy
I wouldn't take a chance and take the head to a reputable Indy and have the guide replaced with good bronze guides. Parts might be $25 and labor one hour.. why take a chance..
Even tho the Evo is better in this regard than a Shovel... You still need a valve job after Guide replacement...
have yer Indy run a Go, No-Go and see.....

 
Reply
1
Old Jan 25, 2020 | 02:36 PM
Share
  #7  
t150vej's Avatar
t150vej
HDF Community Team
20 Year Member
Community Favorite
Top Answer: 3
Joined: Dec 2005
Posts: 5,442
Likes: 2,638
From: NC USA
Default ooops
Originally Posted by t150vej
The valve stems are .301 (usually, plus or minus .00025) .............
.310 not .301

Lack of coffee .......
 
Reply
0

Trending Topics

Old Jan 25, 2020 | 02:38 PM
Share
  #8  
Uncle Larry's Avatar
Uncle Larry
Seasoned HDF Member
Veteran: Army
15 Year Member
Joined: Jan 2011
Posts: 157,631
Likes: 57,166
From: Michigan 15 Minutes East Of Hell
Default
Originally Posted by Racepres
Even tho the Evo is better in this regard than a Shovel... You still need a valve job after Guide replacement...
have yer Indy run a Go, No-Go and see.....
Beat me to it :>)
 
Reply
0
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
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Valve seal question
hombrekid
General Topics/Tech Tips
1
Jul 17, 2017 09:48 PM
question about valve adjustments
cajun1957a
Shovelhead
3
Oct 18, 2014 09:41 PM
Munched valve
PanheadBill
Panhead
4
Jul 9, 2012 07:27 PM
anyone use revtech valve springs?
ernofsteel007
Engine Mechanical Topics
0
May 23, 2009 06:10 PM
Evo crankcase vent valve
Fritzwm
Oil Archive (no new posts)
1
Apr 13, 2008 07:33 PM
Back to Subforum
EVO
View Next Unread
Arlen Ness Big Sucker vs. K&N




Advanced Search
Reply Closed Thread Share
Forum Jump

All times are GMT -5. The time now is 01:39 PM.

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 | 2026-06-18 10:29:31


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