Are the head bolts reusable on 1998 KIA Sportage 2.0L engine?

1. Can you reuse engine head bolts?
2. Can you reuse head gasket bolts?
3. When should the cylinder head bolts be replaced?
4. Should you lubricate cylinder head bolts?
5. Can you reuse bolts that have been torqued?
6. How can you tell if a bolt is TTY?
7. When replacing a head gasket What else should I replace?
8. Are stretch bolts reusable?
9. Can you reuse 454 head bolts?
10. What happens if you over torque your head bolts?
11. Can galvanized bolts be reused?
12. How do you know if a bolt is one time?
13. Is it OK to reuse screws?
14. Do you need to put anything on head bolts?
15. Should you Lube bolts?

Can you reuse engine head bolts?

Can I reuse head bolts? ... A head bolt should not be reused if the threads are galled or badly damaged. Chasing damaged head bolt threads with a die will clean up the threads but also remove material (metal) and undermine the head bolt's ability to torque down and hold to specs.

Can you reuse head gasket bolts?

Damaged Head Bolts

Bolts with any signs of damage, no matter how slight, should never be reused. Not only will the bolts eventually fail, but when they do, there is the potential for them to cause damage to your cylinder head.

When should the cylinder head bolts be replaced?

If the engine has low mileage you can usually reuse the head bolts if they are NOT aluminum. In an engine with over 100,000 on it, the head bolts should always be replaced. If the bolts are aluminum, then again, you always replace them.

Should you lubricate cylinder head bolts?

you should always lube anything that is going to be torqued or else you won't get an accurate reading...you want to be measuring the torque without any friction interfering with the reading.

Can you reuse bolts that have been torqued?

Mechanically, bolts may be reused provided the bolt never exceeded its yield point: a simple enough definition, but one that is more complicated than it may appear. This is because it is nearly impossible to verify if a bolt has ever been tensioned past the yield point.

How can you tell if a bolt is TTY?

How are they identified? If a bolt is TTY, the final torque spec will list an angle in degrees rather than ft. -lbs.

When replacing a head gasket What else should I replace?

Other items that will likely be needed to complete a head gasket replacement include coolant, maybe oil, oil filter, spark plugs, hoses and new cylinder head bolts.

Are stretch bolts reusable?

Stretch bolts also known as TTY bolts should be replaced each installation. TTY bolts have a maximum stretch capacity and they can be reused only when they have not met this limit. ... It is possible to reuse TTY bolts and some do without trouble.

Can you reuse 454 head bolts?

As long as the bolts are in good shape (not bent or broken), they can be reused with confidence. If you chose to replace any bolts, only the head bolts would be possible to do without further machine work.

What happens if you over torque your head bolts?

Overtightening head bolts can damage the block threads, yield the bolts, and in extreme cases crack the cylinder head. Some heads are actually fitted using torque to yield (sometimes called stretch bolts), where the bolts must be replaced after use, or they loose some of their strength.

Can galvanized bolts be reused?

3: “Reuse: ASTM A490 bolts and galvanized ASTM A325 bolts shall not be reused. ... If the bolts have been tensioned beyond their yield point, they enter the “plastic zone” (where they elongate and do not contract once the load is removed), which means they may be subject to premature failure.

How do you know if a bolt is one time?

For non-critical apps like the t/s cover, bolts can be reused. The best way to determine which is which is to look at the specified bolt torque in section 4 of the TIS workshop manual. If a bolt specifies a torque and an angle, it a TTY bolt. If it just specifies a torque, it's reusable.

Is it OK to reuse screws?

Typically you can if the screw has never exceeded its yield point. The yield point is the point where the screw will not return to its original length or shape when the load is removed from it. ... If the application is critical, screws should never be reused.

Do you need to put anything on head bolts?

Rules for bolting on heads:

Never reuse Torque-To-Yield (TTY) bolts. Be sure to use thread sealer if the hole goes through to a water passage. Always use lubrication on your head bolts and studs. Make sure your fasteners are clean and the holes are free from debris.

Should you Lube bolts?

By lubricating the fastener the results are further improved and scatter is reduced to 10%-15% which is about as good as can be achieved using torque control methods. When tightening a fastener ALWAYS use a controlled method. Unless specifically told not to, always lubricate the fastener.