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Parting Out a Motorcycle

07/28/2008 12:22 PM

I am considering parting out my motorcycle. I was wondering if anyone on here has ever done it before and if so, are there any strategies or tips they could offer. Its an '84 Honda Magna that is still in good shape, but to get the clutch repaired, steering bearings replaced and have a rebuilt speedometer installed will cost more than I paid for the bike when I bought it. The real reason that I am asking is that I don't have a ton of mechanical experience and while I know what a lot of parts are called and what not, does it take a real mechanic to do this?

Is it more of a headache than it is worth? Any suggestions, anyone? Sorry if this is less technical than usual posts.

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#1

Re: Parting Out a Motorcycle

07/28/2008 5:40 PM

'Parting out' isn't a term I understand, but I assume you mean stripping down as we say in the UK.
It's not too difficult if you follow a few rules.

Get a full manual first, and a good socket set and a good set of ring/open ended spanners (try to avoid adjustable spanners) and preferably a mate who has done this sort of thing before.

Don't take the whole darned thing apart at once! Treat the engine as a completely separate unit. Have plenty of space and boxes and cards to label things and plastic ice-cream tubs to but bolts in (eat the ice-cream first!) . Maybe a note book, for sketches and notes ...or write notes in the margin of the manual. And plenty of clean rags.

If you haven't got much experience the BIG trick is to recognise when you are stuck or don't know what you are doing, this is where the knowledgeable mate comes in handy.

When you can't get something undone don't resort to brute force straight away...there is a slowly increasing scale of things to try (including buying the right tool) culminating eventually in oxyacetylene torches and sledge hammers.

Don't get overtired or try too much at once...a little and often is the key...be methodical and take your time to understand each bit.

Be patient grasshopper.

You can take off sub-assemblies and worry about them later. (EG once you get the forks off you could always take them to a specialist to sort out if you can't get 'em apart yourself)

When in doubt stop and think.

Rebuilding it is much easier than taking it apart, cos it's all clean and shiny...(assuming you've cleaned all the bits ...did I mention all thos clean rags?)

First machine I stripped down was with the help of my Dad...after that I was the mate who'd done it before.

Enjoy! You will learn a huge amount.

Del

Oh yes, and ask Anne Hathaway before you do any stripping down on the kitchen table!

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#7
In reply to #1

Re: Parting Out a Motorcycle

07/29/2008 8:17 AM

Good Answer.... I would also add that if you're going to take the gear box apart - do that as a separate job and take lots of pictures of the internals as you work...

I found that an indelible marker is useful to mark the cogs / pinions etc...

John

PS - I've just read to the end of the thread so 'parting out' is easy peasey

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#2

Re: Parting Out a Motorcycle

07/28/2008 5:45 PM

Take it apart. Take pictures of the parts and sell those parts on EBay.

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#3

Re: Parting Out a Motorcycle

07/28/2008 9:56 PM

The way I see it, the real value is the engine\transmission. The price for that should be approximately the same value as the bike in it's current condition. If you can't get decent dollar value for that, why not just sell the bike as is, and save yourself some aggravation.

But if you can get the fair amount for the engine\transmission, them you should make some additional money for your effort by selling the wheels, tires, seat and handlebars. I would think that any other parts that you sell beyond that will be a blessing. Good luck.

OK at the count of three start telling me why I am wrong.

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#4

Re: Parting Out a Motorcycle

07/28/2008 11:10 PM

Due to the increased cost of fuel the bike may be worth more than you paid for it. A good manual will tell you up front what tools are needed and how long the procedure may take to complete as well as pointers of associated information and sources if you need help. Or MSG Del

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#5

Re: Parting Out a Motorcycle

07/29/2008 2:22 AM

Ther is confusion...it's that 'parting out' expression..
Are you going to strip it and re-build it to use.
Or strip it to sell the bits...

If it is the latter then the average Gibbon could manage it...because you don't have to know how to get it back together . There aren't that many bits as you don't need to take it down every last nut and bolt.

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#6

Re: Parting Out a Motorcycle

07/29/2008 5:54 AM

I was going to strip it out and sell it, but my brother-in-law now wants to buy it. I liked the bike a lot, so while I probably could get more money for it the other way, I'd rather know someone is still riding it.

Thanks for all of the suggestions. They were really helpful when I was trying to figure out how involved of a process this was!

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#8

Re: Parting Out a Motorcycle

07/29/2008 8:52 AM

The clutch is an easy and inexpensive DIY project (painless compared to a clutch job on a car.)

You can get a replacement speedo at a scrap yard. One that specializes in bikes. Ask around and you should be able to find someone capable of rolling the odometer to where it should be.

The head bearings should be available. Check some of the online parts places. Some of them specialize in Honda.

Parting it out would be no fun. You "can" make more than what you likely paid but you'll be sitting on a room full of parts for a while. I've got 2 Honda CB basket cases that I'm not sure what I'll do with. I paid a few hundred bucks for them in working order. I've taken the parts I needed for a CB400 restoration. Their next stop will likely be the metal recycling center if I get no bites on Craigslist.

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#9
In reply to #8

Re: Parting Out a Motorcycle

07/29/2008 8:58 AM

That is good to know. I saw that prices for clutch parts on Ebay were pretty reasonable, but I know how crazy (expensive/difficult) it is for a DIYer to replace one on a car, so I assumed (wrongly) that it was a similar deal.

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#10
In reply to #9

Re: Parting Out a Motorcycle

07/29/2008 9:28 AM

Simply removing the clutch cover gives you full access. Look in a manual to find out if you need a special alignment tool when you put the new clutch plates on. Most clutches do but it's usually not necessary. It's likely a wet clutch, so you'll do an oil change at the same time. You'll also need a new clutch cover gasket and the appropriate gasket cement.

If your unsure about anything, ask the questions here:

http://www.hondabikes.net/forum/

There is classic Honda forum too but they deal more with the pre 1980 models.

Make sure the clutch cable isn't just tight. That will not let the clutch fully engage, thus slip.

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#11

Re: Parting Out a Motorcycle

07/29/2008 10:25 AM

When working on motorcycles, or anything with a lot of aluminum threaded things, the first tool on your list must be an impact screwdriver. It will be your friend.

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#12

Re: Parting Out a Motorcycle

07/29/2008 10:32 AM

Depending on the mileage, your camshafts and followers may be losing their hardface. I had an '83 Interceptor with the same basic engine and my first set of cams and valve followers (rocker arms if you will) went in at about 20,000 miles. 15,000 miles later, the second set went in. I upgraded the oiling system tapping directly into the crankshaft main gallery for a higher pressure, filtered oil using stainless braided lines to the heads, but the root cause was simply too high pressure exerted on the interface between the cam lobs and the valve follower surface. Honda used a forked follower where one cam lobe and follower actuated two valves. Honda realized the defect in the design and in '87 completely redesigned the V4 motors.

If you haven't been to http://www.bikebandit.com they have the 'microfiche' of the bikes showing exploded views and parts numbers. Very handy reference. Click on the "OEM Parts" link on the webpage and navigate by Make, Year, Model. You can get views like this:

This is very handy for maintaining older bikes if the dealer no longer carries the factory shop manual. Good luck to your kin with the bike. The V4 engine is a sweet running, smooth as silk engine but keep an eye on the camshafts. You will notice tell-tale flakes of hard facing in the oil when you change it when the cam lobes have lost their surface finish. Keep high quality oil in the crankcase and you will extend its life.

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#13
In reply to #12

Re: Parting Out a Motorcycle

07/29/2008 10:47 AM

Excellent link!!

I give you a good answer just for that. But the rest was equally informative.

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#14
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Re: Parting Out a Motorcycle

07/29/2008 10:50 AM

Agreed. Excellent resource. Thanks!

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#15
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Re: Parting Out a Motorcycle

07/29/2008 11:18 AM

What a shame about the cam wear. Were you using synthetic oil? What do you think about extreme pressure additives to the oil?

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#16
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Re: Parting Out a Motorcycle

07/29/2008 11:53 AM

Yes, I used the bloody expensive Redline synthetic oils but that engine still ate its cams. I would personally stay away from additives. I have never heard any positive third party research into their efficacy and there have been a number of instances where the side effects were worse than the symptoms. Given that most motorbikes use a wet clutch, additives can have some serious effects on clutch operation. Proceed with caution.

I eventually sold it in 1992 after having ridden it for 40,000+ miles. Hated to see it go, but I had two young children at the time and had less time for riding let alone time tinkering away in the garage. Sixteen years later, I still have my VF500F Interceptor and now I own an '06 Buell Ulysses as well which keeps me entertained quite nicely out on the back roads. The four kids are older now and we take them all out trail riding.

It's nice once they get older (except for the usual teenage issues )

Cheers!

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#17
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Re: Parting Out a Motorcycle

07/29/2008 11:57 AM

That is good to know. I know that oil with moly can destroy your clutch totally, but I just learned that in about the last month or so (finally, something learned NOT the hard way).

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#18
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Re: Parting Out a Motorcycle

07/29/2008 12:28 PM

Your choice with the '02 Magna seems to be a good one. To parrot others, check with your local DMV regarding the salvage title and how much hassle you will get. Often times a bike is totalled because the cost to repair exceeds the bike's blue book value. However, in many cases the true value of the bike is much higher than the blue book so it can be worth making the repairs once purchased back from the insurance company. A minor collision and tweaked forks will get a bike totalled. Other times, there is minor cosmetic damage ($$$) that most people are happy to live with, but the insurance company still figures in ALL the damage. If you buy the bike, check carefully around the steering head with a bright flashlight or in good sunlight to look for frame damage. A short drive and applying the front brakes will tell you if the forks are tweaked.

If it feels like the handlebars "twist" in your hands when you apply the front brakes at 30 mph or higher, then the forks will need some attention. Sometimes you only need to loosen the lower triple clamps and pump the front suspension to release the "twist". Then tighten the lower clamps and loosen the upper clamps. Pump a couple of times and retighten every thing using factory torque values. You might need to raise the front of the bike and loosen both upper and lower clamps at the same time to get everything aligned. (Don't loosen both with the front wheel still on the ground) If the handle bars still "twist" when you hit the front brakes then one or both of the fork tubes are probably bent. As long as the tubes haven't been "creased", a good motorcycle shop can straighten them, although new tubes aren't all that expensive as long as you don't go to your local dealer. (I've been happy with OEM parts from Bike Bandit).

I hope this helps some.

Good luck!

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#19
In reply to #18

Re: Parting Out a Motorcycle

07/29/2008 12:38 PM

That is very helpful. Thanks. I will make sure I take it for a good spin and put the brakes to it. And thanks for the website. I have been relegated thus far to Ebay and my local shop, who tells me to get the parts elsewhere and just let them do the labor because of how expensive it is.

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#20

Re: Parting Out a Motorcycle

07/30/2008 9:08 AM

If you decide to do the work yourself, you MUST buy the manual and use a torque wrench as not doing this will cause you to strip out important threads......they are repairable with a special Helicoil set, at a price......so do not take the risk.

A German saying, loosely translated says that when tightening up screws and bolts " After very tight comes very loose! ".....

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#21
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Re: Parting Out a Motorcycle

07/30/2008 9:13 AM

das ist goot!

I spent a month in Germany earlier in the year and that is about all I remember. That, and I call my German Sheppard "Das Hund!"

I thought about buying a torque wrench and was pleased to learn that my father in law has one. That is a great saying, and so true.

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