Destroying a wrecked 1972 CB350 twin

Here are the Before pics.

Can anyone tell me how to know if the frame is straight? Do you have to measure it or can I just look at it and inspect the welds to know?
 

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I mean this in the nicest possible way: You are in over your head and, were it me, I would find a running motorcycle.

Best luck.
 
Thanks Rich Ard. It makes me smile to hear you say that because it makes me think I can't screw it up bad enough. In a way it excites me to think that I could make jaws drop by showing the before and after pictures but on the other hand I could wind up with an ugly, expensive coffee table.

It's a tall order but I'll step up to the plate and swing at it. You're only 30 once right? If nothing else I'll learn a little bit. I mean I've already got to see first hand the inside of a motor and the front sprocket, you may think I'm joking but I'm excited about that. The bad thing that I understand is taking all this apart is easy. Putting it all back together and making parts fit is where the problem starts. Everybody had to start somewhere right? I just pick the worst places to do it.

In my head I know I can do it and I can make it work. The problem is making my hands do what my brain wants them to.
 
The entire front end is toast. Frame is probably still straight, that thing is so overbuilt it would take a car crusher to bend it. But it's a parts bike at best for a neophyte.
 
Your exactly where you need to be head first in to a mess is the best way to learn now prove everyone wrong. The fastest way to get me to turn water in to wine is for someone to tell me I can't, it then its a mission not a task. you'll get there just get over the "i don't want to mess something up" stage it started out a junk bike so if it turns out to be a class room your out nothing
 
And that entire front end fork fender triple wheel is done. Pull it apart and see how it works
 
Re: Re: Destroying a wrecked 1972 CB350 twin

bradj said:
Your exactly where you need to be head first in to a mess is the best way to learn now prove everyone wrong. The fastest way to get me to turn water in to wine is for someone to tell me I can't, it then its a mission not a task. you'll get there just get over the "i don't want to mess something up" stage it started out a junk bike so if it turns out to be a class room your out nothing

Goddamn right! No need to be a glutton for punishment, though - that is a parts bike. :)
 
Snow - I would have quit when I heard this bike was part of a fatality. Sounds like bad karma. I know a bike is just metal, plastic, and rubber, but sheesh! Not sure if I'd want to ride a dead man's bike.

That aside, you have a lot of work ahead of you, and you will make many many mistakes, but if you do your research you'll make progress. Slow, agonizing progress. If you think ADC is giving you a hard time, try posting on Caferacer.net and see what responses you get. ;D

Let's see some photos!
 
This looks like a bit of fun. Even if you don't finish it the knowledge gained will be well worth it.
I will be following this. When are more pics due?
 
i wouldn't worry to much about the carma part...last bike i fixed up (kz650) a guy was killed on..i drove it for 2 years and it was perfect, dont get me wrong im a big believer in carma.....i just felt rebuilding and driving her was putting the good carma back in!. but seriously that bike is rough, i have no doubt she can be brought back but just be modular about it ..frame...engine ...wheels...or whatever order your budget allows...just really focus on getting a specific area done...oh and take heed the advise of the ddt members...there seems to be a few thousand years combined experience kicking around here.
 
Here's what's left of the motorcycle. Although I managed to get the front wheel off tonight, which of course I didn't take a picture of. I almost took the back wheel off but I decided I didn't have the motivation. I'm really just avoiding the inevitable of working some more on disassembling the motor. I want to clean the motor a little bit before I tear it down any further. And I will have to paint it when I get it tore down. The dirty paper towels were to catch the oil, someone didn't drain the oil before taking the motor apart. What a dumb idea. I don't know if it was dumb but it sure is messy.

As for the karma, I would usually tell someone to stay away from it myself but for some reason I am drawn to this bike. I'm either fixing this thing as a silent honor or I'm building my chariot to the after life. Either way I'm going to have fun doing it.

As for near plans, I'm going to order an engine gasket kit and SS bolt kit from Dime City Cycles. I have to ask another question though. Since I'm not going to bore it out unnecessarily, do I take the pistons to the machine shop when I get the block honed to see if they are still usable? If so, then do I need to order piston rings since I had a broke one or wait to see if it needs boring? Thanks, for the input and help.
 

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You'll need at least new stock size piston rings if there's no major scoring in the cylinder walls. Take to machine shop for honing.
 
Also needs a torque wrench and sockets for it. If you are new, and don't have a torque wrench, you new skill to learn will be broken bolt extraction.

I hope you have a manual too.

There is no good way to redo a motor or motorcycle without one. I have a manual for every vehicle I own.

You cannot possibly rebuild a motor properly with Internet advice only.

Start reading builds on this site and see how many break EXPENSIVE parts that would not have broken if they followed the instructions. Things like bent valves, cracked cases, ruined heads because an oil passage wasn't lined up properly. The devil is in the details.

Anybody saying it is easy and anyone can do it has properly not built their engine in a proper and reliable way.

Good luck, and I would never want to be the test driver of you rebuild. I'd worry a wheel might fall off.

Did you know their is a proper tightening sequence for the front fork axle clamps?

There are a lot of unsafe builds and advice. Don't take my word or anyone else's. just because someone else did it that way does not mean it is the correct or safe way to do it.

Get a manual. They are available for download free, so no excuses.

Good luck


Sent from planet Earth using mysterious electronic devices and Tapatalk
 
HA! Caferacer.net folk are (prepare for the generalization) NOT helpful. A lot of them do know their stuff though.. you have to prove yourself to them before they will talk to you. Stick on here... You might get as lucky like I did. Turns out Teazer lives close by and the guy is a walking dictionary of all things motorcycle.

Wangofree said:
Snow - I would have quit when I heard this bike was part of a fatality. Sounds like bad karma. I know a bike is just metal, plastic, and rubber, but sheesh! Not sure if I'd want to ride a dead man's bike.

That aside, you have a lot of work ahead of you, and you will make many many mistakes, but if you do your research you'll make progress. Slow, agonizing progress. If you think ADC is giving you a hard time, try posting on Caferacer.net and see what responses you get. ;D

Let's see some photos!
 
Thanks for the help guys. Torque wrench. Check, ft-lbs and in-lbs. Impact driver. Check, my dad gave me one last weekend. Screw extraction. Expert, not really an expert but out of all the screws on left crankcase, ponts cover and tach cover I would conservatively say that 1/4 of those are stripped. I wouldtake the blame for a good 3 or 4 of those. The rest were already stripped so I got introduced to tat early. Good experience as it was my first stripped and stuck screws. Extraction is an art but I'm only a fingerpainter right now. Oh and the manuals. Between here and hondatwins and a few other resources I've got all the shop manuals and wiring diagrams. I ordered a clymer from DCC but they sent me the one for the 350F, waiting on the swap there.

As for disassembly I havent been following along word for word. I read up on the next couple sections to make sure there are no critical areas and then have at it. For instance, read about removing breather cover, cam, and stator. Found out there was a mark that needed alignment. Then tackled it until I got to the mark and went step by step through that. Best way I can learn. Now on reassembly I will be going letter by letter.
 
Wangofree said:
Snow - I would have quit when I heard this bike was part of a fatality. Sounds like bad karma. I know a bike is just metal, plastic, and rubber, but sheesh! Not sure if I'd want to ride a dead man's bike.
is your house or apt new, you ever drive over a bridge or stay in a hotel people die all over the place. Build your bike
 
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