EVO All Evo Model Discussion

Using oil Winter upgrade time?

Thread Tools
 
Search this Thread
 
Old Sep 10, 2010 | 09:31 AM
  #1  
MDodson's Avatar
MDodson
Thread Starter
|
Road Master
Joined: Feb 2007
Posts: 990
Likes: 0
From: Trinity Al
Default Using oil Winter upgrade time?

I have a 91 UltraClassic . The bike sat for 10 years before I bought it. Changed all the fluids before riding. It has about 37000 miles on it. I am using about a 1/2 a quart of oil every 3 or 4 tank of gas. What is a good bore size upgrade to go with and cam . I am going to have it apart to do rings and change the valve seals so why not upgrade
 
Reply
Old Sep 10, 2010 | 12:07 PM
  #2  
grbrown's Avatar
grbrown
Club Member
15 Year Member
Liked
Loved
Community Favorite
Joined: Jun 2007
Posts: 45,429
Likes: 2,898
From: Bedford UK
Default

There is not much room on an early evo to rebore in the same way those pesky twinkies can! I stroked my 1990 bike to 89", but the good tuners can get serious improvements in performance without doing that these days. There are tuners who sponsor HDF it would be worth contacting, to see what they recommend. They would probably be pleased to sell you a package deal!
 
Reply
Old Sep 10, 2010 | 12:24 PM
  #3  
bagga's Avatar
bagga
Elite HDF Member
Joined: Mar 2006
Posts: 3,673
Likes: 606
From:
Default

run the oil about 1/2 quart low for awhile and see if the oil stays there on the stick. my 85 likes the oil 1/2 qt. low.
 
Reply
Old Sep 10, 2010 | 12:34 PM
  #4  
grbrown's Avatar
grbrown
Club Member
15 Year Member
Liked
Loved
Community Favorite
Joined: Jun 2007
Posts: 45,429
Likes: 2,898
From: Bedford UK
Thumbs up

Originally Posted by bagga
run the oil about 1/2 quart low for awhile and see if the oil stays there on the stick. my 85 likes the oil 1/2 qt. low.
I had a pushrod BMW twin that did the same. Took me a while to realise it was trying to tell me something!
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
wi.st.rod
General Harley Davidson Chat
7
Oct 17, 2011 07:23 PM
95th 1200
Sportster Models
5
Jan 9, 2011 05:10 PM
2007ELECTRICGLIDE
Oil Archive (no new posts)
7
Apr 27, 2010 05:41 PM
1flhtk4me
Oil Archive (no new posts)
4
Mar 9, 2009 04:19 PM




All times are GMT -5. The time now is 03:00 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