What Type Of Bolts To Use For Exhaust?

Published date:

2022-10-10
Score: 4.62/5 (28 votes)

Are you searching for an answer to the question: What type of bolts to use for exhaust? On this page, we've collected the most accurate and complete information to ensure that you have all of the answers you need. So keep reading!

The recommended grade of bolts is 8.8 tensile or higher so that you can tighten them without stretching or breaking the bolts. There is also the use of locking nuts, Loctite, or spring washers. It helps to prevent the nuts from vibrating loose.

You may wonder, what is the best material for exhaust bolts? Exhaust parts made from stainless steel have the best resistance to rust. However, they will rust over time. Stainless steel is the most expensive choice.

Similarly one may ask, can you use stainless steel bolts on exhaust? SS bolts on an exhaust are a good idea - they will last significantly longer than standard bolts. They're relatively unstressed. It's a good idea to put some grease or oil on the threads to prevent galling as you tighten the bolts down as SS is a little softer.

Besides above, should i use loctite on exhaust bolts? Loctite is not recommended for exhaust manifold bolts because it may lose its effectiveness when heated, and will make it too difficult to remove the bolts in the future. You should apply Anti-seize to manifold bolts in order to prevent them from seizing, and from corrosion.

Likewise, what is a bolt on exhaust? Bolt-On Exhaust Systems

Every bolt-on exhaust kit is made to fit the specific vehicle down to a tiny measurement, and will simply bolt on without any hassle.


What type of metal is used for exhaust systems?

The materials mostly used in exhaust systems are cast iron, stainless steel, mild steel / carbon steel. Recent trends towards light weight concepts, cost reduction and better performance, have led to the use of sheet metals.

Why do exhaust bolts have springs?

Usually to allow movement of the exhaust joints due to engine movement and to pre-load a 'ball-and-socket' exhaust joint together.

Can stainless steel bolts be used on cast iron?

Re: Stainless Steel hardware on a Cast Iron Block

they will gall (get stuck) to anything, including stainless. They are also not as strong as a grade 5 or 8 bolt. Their thermal expansion is more than normal bolts, which is one reason they gall.

Should I put anti-seize on exhaust bolts?

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 you use blue Loctite on exhaust bolts?

You could use a loctite. The cylinder head itself remains cool so the loctite will not exceed its design temperature in the threads in the head. Use a medium strength thread locking compound such as the blue 243.

When should you not use anti-seize?

Because of its high solids content, anti-seize can handle high load applications while still providing lubrication and friction reduction. However, anti-seize is not suitable for fast-moving applications, as its high solids content can cause parts to jam.

What is a Grade 5 bolt?

Grade 5. Manufactured from medium carbon steel and hardened for greater strength and durability, a grade 5 bolt is distinguished by 3 radial lines and promises tensile strengths between 105,000 and 120,000 psi. They are most commonly found in automotive applications or those that require medium strength.

What are exhaust manifold studs made of?

The exhaust manifolds are formed from the factory using fine grain cast iron, and like most metals, it expands and contracts during duty cycles of heating and cooling.

Should I use anti seize on exhaust manifold bolts?

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.


What Type Of Bolts To Use For Exhaust - What other sources say:

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