Need bottom end tools...

[sdog30]

I want to rebuild my bottom end on a CR125, but don't have the specialty tools. Anybody have some I can borrow. Looking for a case splitter, clutch holder and crank puller.

If I have to buy them, I might as well just spend the money to have it done for me. Thanks.

[gregp]

I have built plenty of two strokes, and I never needed any one of those "special" tools...

[sdog30]

I have built plenty of two strokes, and I never needed any one of those "special" tools...

What do you use, a pry bar to split it and a rubber mallet to put it back together?

[lrrs313]

Wirelessly posted (BB Tour: BlackBerry9630/5.0.0.732 Profile/MIDP-2.1 Configuration/CLDC-1.1 VendorID/105)

Rubber mallet to split the cases. Very carefully.

[TripleTaco]

An impact wrench makes it really easy to get the clutch hub nut off without the proper holding tool. And when its time to reassemble and torque the nut just put the motor back in the bike first with everything except the clutch assembly, shift into one of the higher gears and hold down hard on the rear brake. I got by this way when i had my YZ apart.

[butcher bergs]

Dead blow hammer and a decent impact gun will do ya just fine.

[JohnnyV]

Need bottom end tools...

Paging DBKromz

[gregp]

What do you use, a pry bar to split it and a rubber mallet to put it back together?

Well, not quite, but you are on the right track. The special tools will make the job a bit easier, but it is not difficult without them. The most important tools are patience and creativity... As mentioned here, an impact wrench will get the clutch hub and the crank gear off. A plastic, rubber, or dead blow hammer will split the cases...

[sdog30]

I can do that. Any problems setting the crank ino the case without a crank puller? I'm guessing I just lube the crank and "tap" it in with the rubber mallet? Then slowly tighten all the case bolt in a criss-cross pattern to draw he case halves together?

[gregp]

...put the entire crank in a freezer for a while. After the cases are together, a sharp rap with a plastic mallet on one end or the other will free it up just fine. After a couple of heat/cool cycles, the crank will find where it wants to be anyway....
Be very careful pulling things together with the case bolts and you should be fine. Try to tap the cases together with a plastic mallet, then take up the bolts. Watch that the rod does not fall between the halves. Lay a very thin bead of silicone around the entire case half before assembling them (there is usually no gasket).
Be carefull hitting the ends of the crank. Put the nuts on most of the way so that you do not deform the threads. If you have spare nuts that fit, use those.

[eboos]

For what it's worth, I used a flywheel puller to split the cases of my TTR125. I also have a clutch holder. If you still need to borrow the tools, PM me.