The bike has sat for a long time and the wrist pin is stuck in the piston because the c clips are stuck solid. Never broke anything yet, and never took more than a minute or two to get any one loose. Pistons,now off,next part requires ALOT of time getting set up right.

Can you post some close up pics? Wiseco makes piston kits for TONS of bikes.

Sure is better than having to clean up all that grease. I've had it sitting up and soaking with PB blaster and it is dripping out the bottom around the piston somewhere. Copyright © 2000-2020 by

If the socket limits the movement of the pin (mine only let me drive it about a half of an inch) take the socket off the end and place the small end of the extension against the edge of the pin and keep driving while it's hot. I have heard the statement that putting pressure against the inside of the bore with the grease gun makes it a wee bit bigger and that helps, too.

I tried using a socket and a clamp, but it still wouldn't budge. I blasted them with PB blaster.
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I had a wrist pin seized to the rod before and had to cut through the piston and wrist pinI got them off. **THIS MAY WARP THE PISTON** I'm replacing the piston, so I don't care if it is warped. Leave it here until the deposits & oil & such stuff turns white. It has to be removed.

Here is my removed piston with the wrist pin still sticking out from the piston. In internal combustion engines, the gudgeon pin (UK, wrist pin or piston pin US) connects the piston to the connecting rod, and provides a bearing for the connecting rod to pivot upon as the piston moves. You're going to put the end where the hot air comes out almost touching the piston where the see the end of the wrist pin. Keep your tools within reach while you're heating the piston & wrist pins. (I've done a 6 hp witte 1 1/2 hp witte and a 3 1/2 brownwall,all headless) I just don't think I'd stand on the grease gun handle.Don't be in such a hurry!!! Their kits include piston, wrist pin, wrist pin bearings, and … Now, you should have the piston off the con rod. I have the tool to remove them but they will not budge. If the pin stops and refuses to move, stop and re-heat as needed. Keep your tools within reach while you're heating the piston & wrist pins.
I would keep the penetrating oil soaking and tapping the piston with a block of hardwood and a mallet a couple of times a day. Good luck, John Hammink.Tom, The wrist pin may have a brass bushing which would account for the loose rod due to the fact that brass don't rust.¿>.If pushed in to far the rings could get caught on the step in the combustion chamber.Maybe carefully heat the inside of the piston skirt.Tom, What about the grease gun trick........it worked great for me a few times.Ive been told on a headless the greese gun method can burst the cylinder on a headless.

First you'll need some tools, tools are good. Wrist pin offset is a useful tool used by OEM and aftermarket piston engineers alike. Gotta pull the wrist pins, and these can be a pain. It has worked for me on all of the engines I have tryed. Wiseco makes piston kits for TONS of bikes. XR200 piston wrist pin stuck. Help, my piston pin is stuck in the rod!! Make sure your piston can't move sideways, place the socket end of the extension against the wrist pin and strike the end of the extentsion sharply with the hammer. You do need a fine pick to tap and try and rotate it, or a super fine pair of needle nose pliers to grab one end and try and rotate or twist.Drill the notch in piston bigger to expose more of the clip so you can get under it w a heavier toolDrill the notch in piston bigger to expose more of the clip so you can get under it w a heavier toolThis. A hair dryer will not work. but the results may take a little while am going to give the air a couple weeks to do its job unless it works before. Make sure your piston can't move sideways, place the socket end of the extension against the wrist pin and strike the end of the extentsion sharply with the hammer.


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