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Old 08-30-2011, 10:29 PM   #1
anonny OP
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Another kick at the cat, 71 CL 450 restoration

I have RTW02 to thank for giving me the "hot tip" on this one Bought it from a nice couple in Kelowna who let me have it for a decent price for both parties, this is going to be a stock resto but not concours enough to break the bank.... a rider shall we say.

Let the fun begin.... caved in tank on this side, anyone have a spare getting in the way?






Luckily it's all there with relatively low mileage, but engine is seized $



This better reflects the general overall condition.

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Old 08-31-2011, 09:28 AM   #2
Skowinski
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Those old 450's are cool bikes. I was looking at one, the CB model, a while back, but the owner was just asking too much for it so I walked.
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Old 08-31-2011, 11:38 AM   #3
MacNoob
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Awesome, I have your bike's little brother - pic is when we dragged it out from behind a shed:

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Old 08-31-2011, 09:14 PM   #4
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Awesome, I have your bike's little brother -

What year is that, I notice the paint is the same but my has chrome fenders. Are you doing anything with it? wanna sell the tank

Todays chore was to see why the engine was stuck, aaaha just as I expected



Top end doesn't look too bad





So after a few days soaking the cylinders were reluctant to come off.... time for some friendly persuasion



a flawless execution, took some leverage and tapping as the right piston was real bad




The helpless victim






The piston and cylinder fate will be determined with some measuring, anyone been able to reuse stuff that looked this trashed before?
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Old 08-31-2011, 09:28 PM   #5
MacNoob
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What year is that, I notice the paint is the same but my has chrome fenders. Are you doing anything with it? wanna sell the tank
It's a '71 CL175. ONE of your cylinders is bigger than both of mine together.... I don't think there would be too much parts commonality with your bike! But yes, the tank is in nice shape. I hope to just polish this thing up and not have to repaint much.

Make sure you come visit at www.hondatwins.net the source of all goodness for these bikes.
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Old 08-31-2011, 09:32 PM   #6
crazydrummerdude
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anyone been able to reuse stuff that looked this trashed before?
Yep.
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Old 09-01-2011, 09:33 PM   #7
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Rods don't look too bad


Piston rings stuck big time, notice the bent oil control ring. Now how do you get the seized rings out? For the first time I broke a ring trying to get it out, this was the "good" piston (read less seized)



As soon as I can free the rings a friend will do some measuring for me.
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Old 09-03-2011, 04:18 PM   #8
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Anyone know how to remove the crank drive gear?



bit of an odd design.
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Old 09-04-2011, 06:43 PM   #9
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It's been a long time since I tore down a CB/CL 450, but I believe you remove the inside snap ring and pull the cover out of the oil sludge trap. Inside is a nut (left hand thread?) removed by a special four pin socket after peening down a security washer. At any rate, pull that snap ring and cover and you can see inside. THANKS - Stan PS Those torsion bar valve springs were WAY cool for an everymans bike back then.
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Old 09-04-2011, 07:50 PM   #10
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That's a pretty standard centrifugal oil filer design for the early Honda twins.

Once the snap ring is out, you can thread a long M6 screw into the inner half of the centrifugal filter to help pull it out. A 40 year old o-ring will be fighting you the whole way. Coming up with the special four-fingered tool to remove the filter nut from the crank will be the hard part. There should be a locking washer staked in place under the nut that will have to be flattened before the nut will come off.
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Old 09-04-2011, 09:40 PM   #11
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You guys were right on the money, inside the centrifuge and no that is not my handy work


it gets better

oil drain bolt

and no again.... I cannot take credit for the alternative tool work.

But on the brighter side of things
Tranny looked good, bearings good... whew

Shift forks are decent


But the biggest prize is the crank looks good, bearings check out and I don't have to worry about sending it out and spending a ton o cash (I remember my Mach 3 costing $1000 for a crank rebuild)

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Old 09-16-2011, 08:03 AM   #12
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That's a pretty standard centrifugal oil filer design for the early Honda twins.

Once the snap ring is out, you can thread a long M6 screw into the inner half of the centrifugal filter to help pull it out. A 40 year old o-ring will be fighting you the whole way. Coming up with the special four-fingered tool to remove the filter nut from the crank will be the hard part. There should be a locking washer staked in place under the nut that will have to be flattened before the nut will come off.
Well,the 4 fingered tool thingy is pretty easy. I took a 12 point socket of a suitable diameter,and simply ground away material away until the four points appeared. A 12 point works great simply because it is divisible by three,and that yields the 4 points that you are after...... MacGuyver lives!. The best way to describe what the special tool looks like is a castle nut with 4 points instead of six.
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Old 09-16-2011, 08:07 AM   #13
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Well,the 4 fingered tool thingy is pretty easy. I took a 12 point socket of a suitable diameter,and simply ground away material away until the four points appeared. A 12 point works great simply because it is divisible by three,and that yields the 4 points that you are after...... MacGuyver lives!. The best way to describe what the special tool looks like is a castle nut with 4 points instead of six.
Make sure that you use a thin cutting wheel on a 4 inch mini grinder. It can be a little risky, grinding into the end of a socket,so be careful
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Old 09-19-2011, 12:06 PM   #14
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Sorry it took so long, the building owners have been working on the entrance and I haven't been able to get into my shop for some time, but I was able to measure the headlight bucket last night. The OD is right at 7 1/8" on my 450.

By the by, Nice powder coating! I really should have looked into that before I went after it with the rattle cans...
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Old 09-27-2011, 02:24 PM   #15
Skowinski
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Nice work! How do you do powder coating at home?
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