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Trouble getting flywheel ring gear on.

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DrEntropy said:
Not to stress over the gear hardness, it shouldn't be. Too brittle and the starter gear will snap 'em off. You may have been better off just letting it cool on its own. I doubt there will be any real issue tho. You'd have to actually quench it to do any real embrittling. You didn't (couldn't) get it hot enuff in open fire... here is some data...

The "V-notch test" they refer to in the temper embrittlement section is called a Charpy test, BTW.
Click to expand...

I jst did a real liight and fine mist from a hand sprayer while moving so it barly got anything. According to some smiths around here, it should have been enought to just harden the surface but not embrittle the teeth through. A few sections of it were red, not real red but they did indeed have glowing color. It wasn't in open fire, it was down in the coals.
 
You're golden. No worries!
 
No amount of water is going to make any difference. When you set the ring on that frozen flywheel, if caused a very harsh temp drop.
 
fordtrucks4ever said:
No amount of water is going to make any difference. When you set the ring on that frozen flywheel, if caused a very harsh temp drop.
Click to expand...

Well, when you think about it, it's not that big of a drop from a frozen wheel compared to an unfrozen one. That day we're only talking 30* b/w the two different wheel states.
 
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