David - Cutting off the shaft with a fiber wheel is the best approach. Don't forget to mask off bearing surfaces and put old bolts in exposed threads before sending it out for sandblasting or powdercoat.
I doubt any self respecting suspension guy would would use compressed air instead of nitrogen in high pressure suspension components. If you are fast I think you'll notice the difference.
I just discovered a DIY blasting place where I live. They have various media types from sand down to glass.
I think I'll degrease and powerwash the frame and take it there so I can blast it myself. I've done it before but no longer have the equipment.
All right folks. I had a productive weekend.
Spent some time with a bucket of hot water and Simple Green and scrubbed the frame in anticipation of sandblasting.
Pulled all the linkage out of the swing-arm. All the bearings were very well lubricated which made me happy :)
Here's a question for you all:
I bought a complete rear brake assembly for a 2003 so that I could get the master cylinder (want to get rid of the remote reservoir that the 2000 m/c has).
Does anyone know if the 2003 rear brake carrier will fit on my 2000 swing-arm?
If it doesn't I'll sell all the parts I don't need.
Logic says that if you get a new crankshaft, the old one has to come out.
I scored a crazy deal on a Tusk crankcase splitter and crank puller.
They arrived yesterday so I set to work.
The case came apart easier than expected.
The crankshaft is completely trashed. There’s about 1/16” vertical play in the big end bearing.
Because of the fretting where the bearing goes, I suspect the main bearings spun in the case and on the crank.
I ordered new OEM bearings and seals today. And picked up a hardware kit to replace some of the missing or mangled fasteners.
Frame is ready for blasting. Just need to get it there.
I’m thoroughly enjoying this process. My partner said that she expects I will build another bike :-)
That's good news ... info like that is also helpful for others, thanks again for sharing. I'm really enjoying the progress reports, makes me want to go out and find a basketcase for a winter project. I say "winter" project, that's when the garage isn't 105 degrees :p
IMHO, the trick to fully enjoying projects like this is to take your time; don't put a deadline on it and enjoy the process. To thoroughly go thru a bike to completion is a big project and would be super rewarding. We're looking forward to the next update!
Thanks @Okiewan, it's been an interesting experience.
It's my first time inside a two-stroke so there's a lot of learning just in that.
What I'm finding particularly satisfying are the nice surprises in dismantling and cleaning. I was expecting the suspension linkages to be just a bear, rusted etc. In fact they are in beautiful condition, fully greased and smooth.
Not at all what I expected.
Cross hatching on the cylinder looks to be in very good shape. To really know for sure you need to get a hold of some proper measuring tools and check piston to cylinder wall clearance with the piston you plan to use, and you'll need to check cylinder taper as well. This will require a micrometer to measure the piston skirt and a bore gauge to check the rest. Most good shops will be able to do these measurements for you if you don't have the proper tools.
Took some time to clean parts so I can have a rolling chassis after the motor is built.
Rear wheel got a good going over.
Hubs look good, rims have some light corrosion, spokes look awful.
The spoke hole closest to the camera by the rim lock is quite enlarged. Not sure what to make of that.
Made short work of the swing arm with a brass brush and a Scotchbrite pad.
I also rebuilt the linkages but I don’t have pics as my hands were beyond greasy!
I had a couple waddled out holes in my rims on my CRF450 back in 2003. I tried rebuilding with a new wheel and spokes but did more harm than good b/c I am not good at truing things up. Buying a new wheel is expensive.
If it seats tight in the waddled out hole and doesn't look like there will be any issue popping the tube I would run it for now and stay on the look out for a cheap wheel or rim that can be re-laced. I don't think it is anything you need to be in a hurry on.
We love project bikes. Okie may have a link to the DRN Internet Build project bike that has more detail of things. Back in the day we did a lot of cool things. That one was more from AJ Wagoner who is a genius with bike builds.
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