What is recommend to use on the threads of exhaust manifold bolts or studs?

If you are reusing exhaust manifold bolts (which we don’t recommend), apply a metal fortified anti-seize to your manifold bolts. If you’ve just removed the broken bolts and ready to complete the repair, chase the threads clean and use fresh OEM bolts for best results.

Can I reuse my exhaust manifold bolts?

You could reuse them, if you think they look good, but your chances of one breaking later have gone up now. I replace them every time, just heat the area around the studs, and melt a candle or crayon into the threads, let cool, they should come out easy, may need to heat again.

What are the advantages of stud over bolt?

Studs provide the ability to obtain much more accurate torque values be- cause they don’t twist during tightening as bolts do. Because studs remain stationary during nut tightening, they stretch in one axis alone, providing much more even and accurate clamping forces.

Should I put Loctite on my exhaust manifold bolts?

I have always used loctite nickel antisieze on the exhaust manifold socket head bolts together with a lock washer. Never had a probelm with them coming loose. However I check the bolt tightness after the first few weeks of use as the gaskets can compress over time with heat cycles. You could use a loctite.

How much does it cost to replace exhaust manifold studs?

Usually, this type of repair will run between two and three hours. Most independent shops charge around $80 to $90 an hour, so it should cost between $160 and $270 in labor. At a dealership, with a labor rate of approximately $110 an hour, you can expect a labor bill of between $220 and $330.

How much does it cost to replace exhaust manifold bolts?

Why do exhaust manifold bolts break?

This expansion and stretching of the manifold bolts over numerous duty cycles eventually causes too much tension on the bolt(s), stretching them beyond capacity and causing them to fail.

What is difference between stud & bolt?

Bolts are best described as long shafts and are generally only partially threaded. While a stud requires the use of a nut screw to increase or loosen tension between the parts it holds together, the bolt has a distinct flat head on one side.

Can I use stainless bolts for exhaust?

There should not be any problem using the SS bolts. Factory HP500’s and 525SC’s with Gil exhaust used SS hex cap bolts. I used ARP SS studs and nuts on CMI’s. No issues with either one and they don’t rust.

Can you drive with a broken exhaust manifold stud?

A broken off exhaust manifold bolt in the head will not cause antifreeze to leak into the oil, or anything even like that. That would only happen if the head itself was cracked, in which case you shouldn’t drive the car at all.

What happens if you don’t fix an exhaust leak?

If you think you have an exhaust leak, it’s best to get it looked at and repaired as soon as possible. If left unresolved, it will dramatically hinder the overall performance of your car. Over time, it can also lead to major damage in the engine and other important automotive systems.