Loud tick when hot
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Novice
Joined: May 2010
Posts: 16
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From: Trenton, Ont, Canada
Stripped the top end and measured. The front exhaust valve fit to guide is .0007" above upper servie limit (.0033"). All 4 rocker bushings in the front head are .0005" above max fit. No weak lifters...double checked. Have good flow thru all 4 lifters.
Hopefully this will fix my problem.
There was a ton of carbon in the combustion chambers, 1/4" deep in spots. One of the valves was buried in it. One valve recess in the piston was full!. All cleaned out and ready to reassemble.
Wrist pins and bearings had no radial or axial play. No cylinder or piston scuffing.
Will post.............
Hopefully this will fix my problem.
There was a ton of carbon in the combustion chambers, 1/4" deep in spots. One of the valves was buried in it. One valve recess in the piston was full!. All cleaned out and ready to reassemble.
Wrist pins and bearings had no radial or axial play. No cylinder or piston scuffing.
Will post.............
HDF Community Team
Joined: Dec 2005
Posts: 5,374
Likes: 2,570
From: NC USA
There was a ton of carbon in the combustion chambers, 1/4" deep in spots. One of the valves was buried in it. One valve recess in the piston was full!. All cleaned out and ready to reassemble.
Wrist pins and bearings had no radial or axial play. No cylinder or piston scuffing.
Will post.............
Wrist pins and bearings had no radial or axial play. No cylinder or piston scuffing.
Will post.............
Thread Starter
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Novice
Joined: May 2010
Posts: 16
Likes: 0
From: Trenton, Ont, Canada
Okay...Head's in the shop getting a new guide. Putting in new valve seals, new valves, new rockers in front head. (Will rebuild old ones as spares) New rings.
I think the carbon came from 2 sources...seals, and when I bouught the bike, it had a CV carb on it. I only got 90 miles to a tank of gas. New S&S on it, I get 180 miles to a tank. Was obviously running way too rich.
It was pinging hard if I advanced the curve on the ingnition box. The noise I hear now isn't detonation, it's a "tink" sound in the head...hopefully will be gone when I fire this beast up. I think it was oil passing the rockers when thinned out and you could hear the excess play, or the loose guide. You pick!
I did check compression with the throttle closed... my F-up, shoulda had it open!
New rings should ensure good compression. I'd never remove jugs without changing the rings, cheap insurance. Base gaskets were leaking anyway, so jugs came off(was supposed to be next winter job)
Anybody have a good, easy way to remove the base gaskets? Man, it took quite a few hours to scrape those things off.
Thanks for your posts! Keep them coming. Hopefully this thread will be helpful to someone down the road, too
I think the carbon came from 2 sources...seals, and when I bouught the bike, it had a CV carb on it. I only got 90 miles to a tank of gas. New S&S on it, I get 180 miles to a tank. Was obviously running way too rich.
It was pinging hard if I advanced the curve on the ingnition box. The noise I hear now isn't detonation, it's a "tink" sound in the head...hopefully will be gone when I fire this beast up. I think it was oil passing the rockers when thinned out and you could hear the excess play, or the loose guide. You pick!
I did check compression with the throttle closed... my F-up, shoulda had it open!
New rings should ensure good compression. I'd never remove jugs without changing the rings, cheap insurance. Base gaskets were leaking anyway, so jugs came off(was supposed to be next winter job)
Anybody have a good, easy way to remove the base gaskets? Man, it took quite a few hours to scrape those things off.
Thanks for your posts! Keep them coming. Hopefully this thread will be helpful to someone down the road, too
Club Member
Joined: Jun 2007
Posts: 3,193
Likes: 7
From: North Atlanta Area, GA
Okay...Head's in the shop getting a new guide. Putting in new valve seals, new valves, new rockers in front head. (Will rebuild old ones as spares) New rings.
I think the carbon came from 2 sources...seals, and when I bouught the bike, it had a CV carb on it. I only got 90 miles to a tank of gas. New S&S on it, I get 180 miles to a tank. Was obviously running way too rich.
It was pinging hard if I advanced the curve on the ingnition box. The noise I hear now isn't detonation, it's a "tink" sound in the head...hopefully will be gone when I fire this beast up. I think it was oil passing the rockers when thinned out and you could hear the excess play, or the loose guide. You pick!
I did check compression with the throttle closed... my F-up, shoulda had it open!
New rings should ensure good compression. I'd never remove jugs without changing the rings, cheap insurance. Base gaskets were leaking anyway, so jugs came off(was supposed to be next winter job)
Anybody have a good, easy way to remove the base gaskets? Man, it took quite a few hours to scrape those things off.
Thanks for your posts! Keep them coming. Hopefully this thread will be helpful to someone down the road, too
I think the carbon came from 2 sources...seals, and when I bouught the bike, it had a CV carb on it. I only got 90 miles to a tank of gas. New S&S on it, I get 180 miles to a tank. Was obviously running way too rich.
It was pinging hard if I advanced the curve on the ingnition box. The noise I hear now isn't detonation, it's a "tink" sound in the head...hopefully will be gone when I fire this beast up. I think it was oil passing the rockers when thinned out and you could hear the excess play, or the loose guide. You pick!
I did check compression with the throttle closed... my F-up, shoulda had it open!
New rings should ensure good compression. I'd never remove jugs without changing the rings, cheap insurance. Base gaskets were leaking anyway, so jugs came off(was supposed to be next winter job)
Anybody have a good, easy way to remove the base gaskets? Man, it took quite a few hours to scrape those things off.
Thanks for your posts! Keep them coming. Hopefully this thread will be helpful to someone down the road, too
HDF Community Team
Joined: Dec 2005
Posts: 5,374
Likes: 2,570
From: NC USA
Aircraft Paint Stripper
The trick to that stuff is to brush it on thick in one direction only (like the instructions state). If you use back and forth strokes, it just doesn't work well. (???)
Clean the oil off them best you can with whatever and the longer you leave the stripper on the better. And if you can leave it at least an hour, scrape off what's easy then apply another coat to sit longer, they come right off.
The trick to that stuff is to brush it on thick in one direction only (like the instructions state). If you use back and forth strokes, it just doesn't work well. (???)
Clean the oil off them best you can with whatever and the longer you leave the stripper on the better. And if you can leave it at least an hour, scrape off what's easy then apply another coat to sit longer, they come right off.
Last edited by t150vej; May 18, 2010 at 06:44 AM.
Thread Starter
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Novice
Joined: May 2010
Posts: 16
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From: Trenton, Ont, Canada
NorthGeorgiaHawg,
New base gaskets are James gaskets. I deal with Motor City Custom in Oshawa and they set me up with a mix of HD and James gaskets for the motor kit. Told them to supply me with what they use... I only want to do this once
New base gaskets are James gaskets. I deal with Motor City Custom in Oshawa and they set me up with a mix of HD and James gaskets for the motor kit. Told them to supply me with what they use... I only want to do this once
Thread Starter
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Novice
Joined: May 2010
Posts: 16
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From: Trenton, Ont, Canada
Thanks for the tip, t150vej.
I'm gonna be changing them on my 1200 Sporty before I sell it, so I'll give it a try then.
I assume the paint stripper will peel the paint off the jugs, too, if ya ain't careful.
I'm gonna be changing them on my 1200 Sporty before I sell it, so I'll give it a try then.
I assume the paint stripper will peel the paint off the jugs, too, if ya ain't careful.
Elite HDF Member
Joined: Sep 2007
Posts: 4,468
Likes: 12
From: Bluffton, South Carolina
Pick up some foam rubber padding like they use in the seats. Cut it large to fit in the spigot bore with a slit to go around the rod. It works better than rags to keep junk out of the bottom end. You can take a vacuum and vacuum most of the junk up before you remove it if you make it tight enough, you can't do that with rags.
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Elite HDF Member
Joined: Oct 2005
Posts: 3,872
Likes: 83
From: Canton, Michigan
That, is an outstanding idea!
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Novice
Joined: May 2010
Posts: 16
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From: Trenton, Ont, Canada
Finished reassembly this morning. Fired up and went for a ride to seat the rings. When I got back home, there was the familiar tick. It's very faint now...have to get near the motor to hear it. Could it be a bad lifter from HD? OR could the oil passage in the lifter block be partially obscured? Guess that's the next place to look. Didin't make that noise until I got the lifters changed.
At least now I have the peace of mind that the top end/cylinders are in good shape.
The new rockers got rid of most of my typical EVO top end noises.
Carb settings have changed, probably with getting all the carbon out. Pops once when at low RPM when rolling up the throttle.
Riding the Blue ridge parkway in June, so I still have a couple of weeks to play before making the 1500 kms to get there.
At least now I have the peace of mind that the top end/cylinders are in good shape.
The new rockers got rid of most of my typical EVO top end noises.
Carb settings have changed, probably with getting all the carbon out. Pops once when at low RPM when rolling up the throttle.
Riding the Blue ridge parkway in June, so I still have a couple of weeks to play before making the 1500 kms to get there.