Endoscope pics
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Road Master
Joined: Sep 2007
Posts: 963
Likes: 145
From: Displaced hillbilly
Endoscope pics
Got tired of constantly cleaning the side of the bike from the oil leaking out the A/C so I did a breather by-pass and vented it to atmosphere, but I realize this is only a cure for the mess and doesn't address why it's happening.
I'm planning on doing cams sometime this year and was thinking I'd go thru the top just so I could replace the breather assemblies and drill the drain holes a little bigger as well. I started wondering what shape the pistons were in and if maybe I was having any issues there.
Any engine gurus care to look at the pics and comment?
Fyi it's an 08 with 48,802 miles on it
I'm planning on doing cams sometime this year and was thinking I'd go thru the top just so I could replace the breather assemblies and drill the drain holes a little bigger as well. I started wondering what shape the pistons were in and if maybe I was having any issues there.
Any engine gurus care to look at the pics and comment?
Fyi it's an 08 with 48,802 miles on it
Last edited by pingman68; Apr 30, 2017 at 09:02 AM.
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Joined: Jul 2015
Posts: 8,538
Likes: 1,646
From: SF Bay area
Lots of pro builders here that can advise you on the pistons. One tip I can give you is they sell angled attachments for those borescopes that will allow you to see the sides of the cylinders. Might help make decisions about how to proceed.
A compression test also tells a good story... cheap & easy to do.
Best of luck on your project.
__________________________________________________ ____
For ROCKOUT information & purchasing please click the LINKS below... For all Twin Cams and Evo Big Twins & Sporsters
A compression test also tells a good story... cheap & easy to do.
Best of luck on your project.
__________________________________________________ ____
For ROCKOUT information & purchasing please click the LINKS below... For all Twin Cams and Evo Big Twins & Sporsters
__________________
NO, they DON'T all do that!
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Ordering & info http://www.rockout.biz On ebay! ... CLICK HERE
Also on amazon.com...
Imitated, never equaled... ROCKOUTS!
Road Captain
Joined: Jan 2014
Posts: 566
Likes: 70
From: The Redneck Riviera
Not a guru by any stretch...
Any idea what your Oil Consumption is??
The yellowish rings around the edges of the Pistons is Oil getting past the Rings,, "Blow-by"...
A fair amount of Carbon Build-up on the Piston Crowns because of this...
Seeing some Scuffing of the Cylinder Walls,, surely the Piston Skirts are Scuffed also...
Not atypical for a HD with this many miles...
Fix is; Boring Cylinders to new Pistons / Rings,,, Or fitting a Cylinder / Piston / Ring Kit,,, An opportunity to gain some Displacement / Performance...
Highly recommend checking Crank Run-Out before ordering any Parts...
There are some Good Builders here that can get you headed in the right direction...
Keep us Posted...
Any idea what your Oil Consumption is??
The yellowish rings around the edges of the Pistons is Oil getting past the Rings,, "Blow-by"...
A fair amount of Carbon Build-up on the Piston Crowns because of this...
Seeing some Scuffing of the Cylinder Walls,, surely the Piston Skirts are Scuffed also...
Not atypical for a HD with this many miles...
Fix is; Boring Cylinders to new Pistons / Rings,,, Or fitting a Cylinder / Piston / Ring Kit,,, An opportunity to gain some Displacement / Performance...
Highly recommend checking Crank Run-Out before ordering any Parts...
There are some Good Builders here that can get you headed in the right direction...
Keep us Posted...
Thread Starter
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Road Master
Joined: Sep 2007
Posts: 963
Likes: 145
From: Displaced hillbilly
Oil consumption is not huge by any stretch. Even the by-pass vent hose has only dripped a couple spots in the garage since I installed it. I figured the edges were showing signs of "blow-by" but just don't have the experience to know where it falls on the scale of being ok or "oh crap you got a problem".
Since considering upgrading the cams I had also contemplated maybe adding a 103 BB kit. I didn't want to go too big or crazy since I had read up where some had issues with the bottom end not being able to keep up with the added horses and torque.
Just hoping to get some opinions on what might be the best course of action going forward
Since considering upgrading the cams I had also contemplated maybe adding a 103 BB kit. I didn't want to go too big or crazy since I had read up where some had issues with the bottom end not being able to keep up with the added horses and torque.
Just hoping to get some opinions on what might be the best course of action going forward
Road Captain
Joined: Jan 2014
Posts: 566
Likes: 70
From: The Redneck Riviera
Oil consumption is not huge by any stretch. Even the by-pass vent hose has only dripped a couple spots in the garage since I installed it. I figured the edges were showing signs of "blow-by" but just don't have the experience to know where it falls on the scale of being ok or "oh crap you got a problem".
Since considering upgrading the cams I had also contemplated maybe adding a 103 BB kit. I didn't want to go too big or crazy since I had read up where some had issues with the bottom end not being able to keep up with the added horses and torque.
Just hoping to get some opinions on what might be the best course of action going forward
Since considering upgrading the cams I had also contemplated maybe adding a 103 BB kit. I didn't want to go too big or crazy since I had read up where some had issues with the bottom end not being able to keep up with the added horses and torque.
Just hoping to get some opinions on what might be the best course of action going forward
That's the reason that I recommended checking the Crank Runout before buying any Parts... A "standard" 103 BB Kit is not really considered "crazy" Millions of miles on stock 103s out there with no issues...
Thread Starter
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Road Master
Joined: Sep 2007
Posts: 963
Likes: 145
From: Displaced hillbilly
Nah, If if the Oil Consumption is < 1qt between changes imho it's nothing drastic,,, not "oh crap" lol... HDs spec of 1qt/1k is a friggin' joke...
That's the reason that I recommended checking the Crank Runout before buying any Parts... A "standard" 103 BB Kit is not really considered "crazy" Millions of miles on stock 103s out there with no issues...
That's the reason that I recommended checking the Crank Runout before buying any Parts... A "standard" 103 BB Kit is not really considered "crazy" Millions of miles on stock 103s out there with no issues...
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Joined: Dec 2007
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Oil comsumption may be due to being ingested thru the intake via the crankcase breather vent mist.
From the multitude of engines we disassemble on a weekly/monthly/yearly basis, it looks very like most we see. Nothing odd, at least from those pics.
Scott
From the multitude of engines we disassemble on a weekly/monthly/yearly basis, it looks very like most we see. Nothing odd, at least from those pics.
Scott
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Road Warrior
Joined: Apr 2009
Posts: 1,258
Likes: 114
From: Jackson, Ohio
I tore my engine down at 159 miles from new and my pistons look just like yours. Just not as much build up yet. I'm venting to the atmosphere on my new build of course.
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