Heating up chain gear on engine?

Desperate times call for desperate measures and I'm crazy frustrated.

What would happen if I used heat, as in a torch to heat-up the 32mm nut holding the chain gear on?
My assumption is the engine seal behind it would get trashed but can't that be replaced with the engine in the frame?
Are there any other issues / dangers if I were to try?

The FSM says like 54 to 62 ft/lbs of torque on this nut but there is just no way that nut is breaking loose even with a 4 foot cheater bar on the socket. I have no rear brakes at this point of dismantling so I temporarily installed the old chain and slid a heavy bar through the rear wheel. I'm beginning to worry I could snap an alloy spoke with the force I'm putting on it.

Help!

You need an impact gun and a long 1/4-20 bolt, some flat washer's and nut
Run the bolt through the chain links right behind the counter shaft sprocket
then hit it with an impact gun.
If you were still in Austin I could get it off no problem.

If you can get your hands on a rattle gun that may help. On my bike I used a breaker bar with a long cheater extension added.

You can heat it up. Just keep the flame on the nut. Someone may have used lock tight on it. Is the keeper still there?
If you damage the seal, it can be replaced by taking the shift linkage cover off.
I've never had that much problem with them.
Steve

Thank you gentlmen!

I had to straighten over the lock washer/keeper and i have been soaking that thing daily for 2+ weeks. Never thought it could be lock tight i guess i had assumed it was the original but probably not.
Just thought, all models use a normal thread on the nut right? Lefty is loosey...
You know, i have none of my pneumatic tools here so i started using a 1/2 drive breaker bar of 28". I added an extension tube tonight and pulled until the bar/extension began arcing across 48" of bar.
ZukiDave. If i can get the cylinder head back & installed i'd haul the bike down this weekend. Ironic but i just let my son take the truck home tonight so he can haul his Yamaha back up . Doh!
Guess i'll try putting the torch to the nut tomorrow. Maybe wrap a tinfoil shield up behind it for safety's sake.

If the item turns left, tighten is right and vicy/vercy.
Steve

If you are trying to remove the countersprocket nut here's how to hold the countersprocket from turning without ruining your rear wheel or rear brake. This works! See link below. Ed

www.kzrider.com/forum/21-tools/325119-bu...rocket-holder#325119

Let me know it'd need to be on a Sat. so I can get in the shop at work.

Ed's home made tool is pretty cool...... I've used a chisel on it before to get it started too loosen.... Harbor freight has a pretty decent 1/2 inch electric impact for around 32 bucks with the coupon and I've heard sometimes auto zone will sometimes loan you a tool but not sure if your not buying something from em.

You buy it then get your money back. Be sure the tool is in like new shape or they will try to say you broke it.OR has the same deal.
Steve

Thanks again gentlemen!
The next virtual round is on me!

I always do a search on the forum here before I tackle the next item on the list, even when it's a mundane, done it a million times before kinda' thing...
The wealth of knowledge here on the forum is hundreds of years of experience and insights. Truly priceless.

One such insight is the chain loop and bolt idea to lock-up the chain gear. F'in brilliant!
I just never expected a single nut to be so stubborn. No other fasteners on the bike have been difficult. Odd really.

I am not opposed to trying an electric impact tool and lord knows it won't be the first time (or last time) that I end up buying another (expletive deleted) hammer. I am totally that guy that says - The right tool for the job - :laugh: So I reckon picking one of them up today before attempting fire and brimstone ideas would be wise.

Dave. It seems that my absent truck won't likely be back before next Monday. Doh! :pinch:
Kids. You gotta love'em because we're still not supposed to kill'em! :laugh:

Almost got me a new 12v impact. It was left behind when they were stripping a Honda civic. They got the wheels, radio, etc but I was so sorry for the girl that owned the car, I didn't take it. It plugged into the cig lighter. They got the battery too. I could tell how she loved that car with her CD's, little personalized touches and there was baby cloths in it too. I have a air one but my pan cake compressor is too small to use it as it should. :dry:
You may still have to heat up the nut if the PO used lock tight. I'd try that first. The nut should get hot enough to turn in a few seconds.
Steve