For those not familiar with TTY bolts, these are head bolts that stretch
> when torqued so as to apply a spring-like clamping action to the head and
> its gasket. The seal is well maintained through the heat-expansion and
> cool-down-contraction cycling of normal engine operation.
>
> The factory manual cautions against reuse of the TTY bolts for the reason
> they work harden and lose their spring. Also, they grow in length and
> might bottom out in the tapped block holes before full torque can be
> applied. Mechanics are cautioned against using extra washers under the TTY
> bolt heads to compensate for bolt stretching.
>
> New bolts are ideal, of course, but will set you back $30 and this cost
> will have to be past along to your customers. Follow a simple procedure
> laid down below and you can service them to a satisfactory reusable > condition:
>
> 1. Use a slide caliper to measure the length of a new TTY bolt. Keep this
> measurement for future use.
> 2. Screw on a nut to the used TTY bolt.
> 3. Grind the excess length off the thread end of the TTY bolt to the
> length of a new TTY.
> 4. Unscrew the nut to chase the threads of the now shortened TTY bolt.
> 5. Important! The bolt should be clamped into a vise at the thread end
> using soft jaws on the threaded area. Temper away the work-hardening of the
> used TTY bolt by heating the unthreaded shank of the bolt to cherry-red
> using a propane or oxy-acetylene torch. Let cool about five minutes then
> the bolt can be safely quenched. The bolt is now in a normal condition and
> is ready for re-use.
> 6. Above procedure can be done in batches to speed up the process. A
> dozen bolts can be treated in less than 20 minutes.
>
Lovely! Let's see now, what happens when we stretch a bolt? Do we make MORE steel magically appear? no no no! But, the bolt gets LONGER so where o where does the extra steel come from? Hmmmmm.
Could it be, why yes it is! The bolt SHANK is THINNER! Yes! THAT is where the extra steel is coming from!
Yup, just like stretching a piece of gum, stretch a bolt and it gets thinner. SO, now what happens when we retemper this thinner bolt? Well, I guess we can stretch it some more, yes we can. And it gets even thinner, yes it does. And when it gets thinner, what ELSE happens boys and girls? Whall, guess, what? It gets WEAKER! Yup, the thinner the bolt, the weaker it is!
so THAT"s why that head fell off the engine 10 miles back!!!! I was wondering why that happened!!!
All the above is perfectly ethical in the business sense. Don't agree? Go
> to a doctor's office. First you don't get to see a doctor anymore. You
> see a nurse practitioner who is a glorified nurse who is faking a real
> doctor's work. She is a "quack doctor" in other words. She spends five
> minutes checking your nuts
Ah wondered if you were having what you screwed onto them bolts checked out by someone competent!
then bills your insurance company real doctor's
> fees about $75 for a "Level III" visit when she really did a "Level II"
> worth about $50 (if a real doctor, not the quack did the work). You're
> probably thinking her rippoff charge
Is this the charge she makes to rip off her clothes? Is that right before she checks your nuts? Hmm - is this one of them funny doctors offices in Nevada that has a whole bunch of them nurses in it and mirrors on the ceiling?
is not excessive because her employer
> has a lot of expenses: office rent, insurance, salaries for all the girls,
> has to wait for insurance money, losses on deadbeats, licensing, etc., etc.
> And you're right. So am I because I have the same God Damned expenses and
Whoa, cowboy! Whatsa matter the girls are just making money the only way they know how! It's the world's oldest profession, lots other people better than you have God Dammed it and it's still here!
Ted