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Joined: Feb 04, 2007 Posts: 2312 Location: Studio City, Los Angeles, Ca. 91604
Posted: Wed Feb 17, 2010 2:48 pm Post subject: CL350 Top end rebuild
My Scrambler developed a knock at idle after a spirited 15 mile run on the 101 freeway at WOT.
So I have the engine out of the bike and almost apart.
My cam shaft is scored and worn.
The right piston was the big culprit although there was other major problems too.
The cylinder wall is scored.
The cam chain destroyed the guide and then some.
The motor is toast as far as I am concerned, it is going to be cheaper to buy another engine and put the new parts I bought for this one in it instead of buying all the parts I need to make this engine right again. _________________ Ray #1
71 CL350K3 Scrambler
79 CBX
10 VFR1200F
bakmanrayman [at] yahoo [dot] com fasterspider [at] gmail [dot] com
Last edited by fasterspider on Wed Feb 17, 2010 11:17 pm; edited 1 time in total
Joined: Dec 24, 2009 Posts: 134 Location: Marina del Rey, CA. USA
Posted: Wed Feb 17, 2010 10:03 pm Post subject:
Ray,
Instead of calling this thread "350 Tear Down" you should have called it
"350 Torn Up"
How about a picture of that beautiful cam chain roller?
It is amazing that your bike ran as well as it did for as long as it did.
It is great testimony for the durability of that little Honda. The pictures
don't really show all the damage. One tuff bike.
Good luck with it Ray.
Very Best,
Phil _________________ Decisions Made In Haste
May Be Regretted At Leisure!
"You Can´t Fix Stupid"
Joined: Feb 04, 2007 Posts: 2312 Location: Studio City, Los Angeles, Ca. 91604
Posted: Wed Feb 17, 2010 10:20 pm Post subject:
FalldownPhil wrote:
Ray,
Instead of calling this thread "350 Tear Down" you should have called it
"350 Torn Up"
How about a picture of that beautiful cam chain roller?
It is amazing that your bike ran as well as it did for as long as it did.
It is great testimony for the durability of that little Honda. The pictures
don't really show all the damage. One tuff bike.
Good luck with it Ray.
Very Best,
Phil
Sure thing Phil, here is the tensioner.
The cam chain guide was still available for $20.00 and it is local which means I will have it before I have the pistons & rings I bought from ebay, 3rd over for $92.59 shipped. Now, I won't have to replace the cylinders, I will just have them bored instead. _________________ Ray #1
71 CL350K3 Scrambler
79 CBX
10 VFR1200F
bakmanrayman [at] yahoo [dot] com fasterspider [at] gmail [dot] com
Joined: Dec 24, 2009 Posts: 134 Location: Marina del Rey, CA. USA
Posted: Wed Feb 17, 2010 10:37 pm Post subject:
Well that is good news.
I suppose that next you are going to tell me the
new cam chain roller is round instead of oval too.
Just imagine how well it will run with a rebuilt engine.
Best,
Phil _________________ Decisions Made In Haste
May Be Regretted At Leisure!
"You Can´t Fix Stupid"
Joined: Feb 04, 2007 Posts: 2312 Location: Studio City, Los Angeles, Ca. 91604
Posted: Wed Feb 17, 2010 10:57 pm Post subject:
FalldownPhil wrote:
Well that is good news.
I suppose that next you are going to tell me the
new cam chain roller is round instead of oval too.
Just imagine how well it will run with a rebuilt engine.
Best,
Phil
Joined: Dec 26, 2007 Posts: 1215 Location: Scottsdale, Arizona
Posted: Thu Feb 18, 2010 7:34 am Post subject:
Ray,
It looks like the mangled roller in that tensioner siezed on its shaft. Fear of something like this is the reason I tore mine down before even trying to start it, even though it had only 7K showing on the clock. One thing really odd about yours is that the small roller looks to be in perfect shape, while the one that's torn up is maybe 1/2 of it's original size. But it appears to still have the original bead around most of the OD. I'm thinking that somehow, someone fitted an incorrect roller in that tensioner assembly. I'm sure you adjusted the cam chain tension, but was it quiet?
Joined: Feb 04, 2007 Posts: 2312 Location: Studio City, Los Angeles, Ca. 91604
Posted: Thu Feb 18, 2010 9:36 am Post subject:
Bikegeezer wrote:
I'm sure you adjusted the cam chain tension, but was it quiet?
Stu
Yes, I had adjusted the chain probably 5 or 6 times in a year and the engine was quiet. There was no indication anything was wrong until I was 2 minutes from my house.
When I 1st fired up the engine a year ago, the cam chain was so loose, it sounded like two or three cam chains.
Joined: Nov 02, 2008 Posts: 1035 Location: New Zealand
Posted: Thu Feb 18, 2010 12:53 pm Post subject:
Good luck with the rebuild.Perhaps a year or so back you seemed a bit reserved about the Scrambler and unsure that it would be staying in the family.Have you become a bit attached?
Joined: Feb 04, 2007 Posts: 2312 Location: Studio City, Los Angeles, Ca. 91604
Posted: Thu Feb 18, 2010 2:25 pm Post subject:
Russell wrote:
Good luck with the rebuild. Perhaps a year or so back you seemed a bit reserved about the Scrambler and unsure that it would be staying in the family. Have you become a bit attached?
I love that bike, it is tons of fun and makes me smile so wide I almost swallow my face when I ride it.
But, she is still going to be for sale when she is done.
The problem is, she is never done and costing me more money than I will be able to sell her for. _________________ Ray #1
71 CL350K3 Scrambler
79 CBX
10 VFR1200F
bakmanrayman [at] yahoo [dot] com fasterspider [at] gmail [dot] com
Joined: Nov 02, 2008 Posts: 1035 Location: New Zealand
Posted: Thu Feb 18, 2010 3:26 pm Post subject:
It's odd the way these old bikes can work on the psyche. There are a couple of great all round current bikes in our shed with power to burn etc but the one that brings the biggest smile to my face is the beat up original old CB175 twin. It is FAR too small for me physically to sit on, is about as fast as the push bikes in the shed,has wooden feeling brakes,and suspension that keeps the bodywork from dragging on the tops of the tyres most of the time.Go figure!
Joined: Feb 04, 2007 Posts: 2312 Location: Studio City, Los Angeles, Ca. 91604
Posted: Thu Feb 18, 2010 3:42 pm Post subject:
Russell wrote:
It's odd the way these old bikes can work on the psyche. There are a couple of great all round current bikes in our shed with power to burn etc but the one that brings the biggest smile to my face is the beat up original old CB175 twin. It is FAR too small for me physically to sit on, is about as fast as the push bikes in the shed, has wooden feeling brakes, and suspension that keeps the bodywork from dragging on the tops of the tyres most of the time. Go figure!
I had a CB175 here two weeks ago and have it coming back again next week for a new float valve install, fun but, too small.
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