Burning Oil looking for thoughts.
Thread Starter
|
4th Gear
Joined: Jun 2018
Posts: 8
Likes: 0
From: San Diego, CA
Burning Oil looking for thoughts.
I purchased my 96 Fatboy in November. The previous owner had put 1k miles in 10 years. I had oil changed and started riding. After about 4 months I lost rear cylinder. I disassembled and top end redone.
Here are the stats: 97 CI S&S with Axtell cylinders and 3-13/16 JE Pistons. WB9 cam, STD oval port heads with pro geometry. 2.25 Intake valve and 1.95 exhaust valve. Well the cylinders were bored +.020.
I reassembled and screwed up due to other things going on. Relocated to California and had a blown head gasket. As well as destroying my rotor and stator.
Took to local shop. They stated need new pistons and rings so I ordered at +.030 direct from Axtell. They supposedly bored and honed cylinders and installed new pistons and rings. I picked the bike up and within a day noticed a ton of white smoke when I started it. I then rode about 120 miles and has burned about 1-1/2 quarts of oil. Called the shop that did the work and they started was probably a knicked valve seal.
I called gentleman who did original work and he stated they either installed rings upside down or broke one. Well about a week later I now noticed oil coming from both front and rear at head gaskets.
What could be causing oil consumption.
Here are the stats: 97 CI S&S with Axtell cylinders and 3-13/16 JE Pistons. WB9 cam, STD oval port heads with pro geometry. 2.25 Intake valve and 1.95 exhaust valve. Well the cylinders were bored +.020.
I reassembled and screwed up due to other things going on. Relocated to California and had a blown head gasket. As well as destroying my rotor and stator.
Took to local shop. They stated need new pistons and rings so I ordered at +.030 direct from Axtell. They supposedly bored and honed cylinders and installed new pistons and rings. I picked the bike up and within a day noticed a ton of white smoke when I started it. I then rode about 120 miles and has burned about 1-1/2 quarts of oil. Called the shop that did the work and they started was probably a knicked valve seal.
I called gentleman who did original work and he stated they either installed rings upside down or broke one. Well about a week later I now noticed oil coming from both front and rear at head gaskets.
What could be causing oil consumption.
Last edited by Mcdrty; Jun 18, 2018 at 06:28 AM. Reason: Spelling and grammar
Cruiser
Joined: Aug 2008
Posts: 190
Likes: 25
From: Rotterdam, Netherlands
1.5 quart of oil in 120 miles... and they might have knicked a valve seal? Even if you put in no valve seals at all it wouldn't use that much oil.
Trending Topics
Thread Starter
|
4th Gear
Joined: Jun 2018
Posts: 8
Likes: 0
From: San Diego, CA
That's what I said. Im not sure what they did. Rings look to be in the right way. I dont think they flycut the relief pockets in the pistons deep enough. There is a piece of rear piston missing and the exhaust side is scored pretty deep.
The front cylinder had 1 loose head bolt. On that piston you can see where the intake valve was making contact with the piston. It is deeply scored on intake side. Both cylinders will need to bored yet again.
. The shop is closed today so I will be calling tomorrow. I'm stuck in the mountains until I can get fixed. I'm sure they will try to find every way possible to lay blame somewhere else.
The front cylinder had 1 loose head bolt. On that piston you can see where the intake valve was making contact with the piston. It is deeply scored on intake side. Both cylinders will need to bored yet again.
. The shop is closed today so I will be calling tomorrow. I'm stuck in the mountains until I can get fixed. I'm sure they will try to find every way possible to lay blame somewhere else.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Seasoned HDF Member
Joined: Oct 2015
Posts: 13,539
Likes: 34,738
From: Pine Flat Dam/South Bay Area, CA
It appears the shop neglected to "check all clearances". W9B is a high lift cam & those monster valves in the STD heads introduce valve to valve & piston to valve clearance issues. No easy job & you just can't ignore details when setting up a combination like this. Hope you get it worked out, OP.