Duramax Cylinder Numbers for Better Fixing Ideas!

Finding and understanding Duramax cylinder numbers can be tough for most of you, isn’t that so? But if you have enough idea of the cylinder numbers you can quickly fix any problems with your Duramax engine.

If you still have no idea about the cylinder numbers position of the Duramax engine, there is no need to worry about that here. We will explain to you the exact details about the cylinder numbers of Duramax.

So, let’s start our main discussion without any further ado:

Duramax Cylinder Numbers: What Do They Mean?

The back of the engine is the part that’s connected to the transmission. On the other hand, the front of the engine is the part that’s got the belt. The end with the belt is considered the front of the engine; that’s where our cylinder numbering generally starts from.

Let us clear you about the Duramax cylinder layout. For your better understanding, we attach a Duramax cylinder diagram. However, if you look at the below image,  you will first see a little rectangle that is going to represent the pulley where the belt sits and the front of the engine. The following larger rectangle indicates the block where each one of the small squares represents the cylinder.

Anyway, Duramax cylinder order numbers mostly follow the typical V-8 setup. Typically, this type of cylinder layout has two sides, with the left side being the driver’s side and the right side being the passenger’s side.

Typically, a V8 engine consists of eight cylinders in numbers, with one cylinder located beneath each spark plug, respectively, on both sides of the engine. On each side of the engine, there are four cylinders, for a total of eight. To be honest, the Duramax cylinder numbers position makes more sense than its competitors.

Duramax cylinder keeps the crankshaft in the center, and the numbers are on two sides. Using the order that the piston rods connected with the crankshaft, cylinders start at ‘1’ at the front of the engine and end at ‘8’ at the back. This is a straightforward system to understand as well as easy to repair when necessary.

The passenger’s side starts with the cylinder number ‘1’ on the left, and the next cylinder inline on the crankshaft would be the driver’s side. The order of Duramax cylinder numbers goes front-to-back as follows: 1, 3, 5 & 7 are located on the right, that is, on the passenger’s side, whereas 2, 4, 6 & 8 are positioned on the left, meaning the driver’s side.

However, there is no direct opposition between cylinders 2, 4, 6 & 8 and 1, 3, 5 & 7. Right and left banks are offset from one another, with the left bank slightly behind the right bank. It is too complicated and expensive for pistons (in typical auto engines) to connect to the crankshaft directly opposite each other. For this reason, they are not connected directly opposite each other.

The connection between Piston 2 and the crankshaft is behind Piston 1. Next comes the main bearing, followed by piston 3, then piston 4, then another main bearing, and so on. This setup allows the piston rods to connect to the crankshaft in the correct order, with the left bank offset behind the right bank.

It is important to note that many firing orders for Duramax V-8 engines sometimes differ. Different firing orders may also boost engine power output under some circumstances.

Generally, the firing order in a Duramax is 1-2-7-8-4-5-6-3. The firing order of this engine isn’t too problematic when the engine is left completely stock. If you face any issues with this firing order, you can move to the alternative firing order of 1-5-6-3-4-2-7-8.

This Duramax cylinder order also applies to engines with two cylinder banks, such as those with a V-2, V-4, V-6, and so on.

Anyway, in a V-8 setup, cylinder number ‘1’ will always be the farthest towards the front on the engine, and the rest is kind of up to what the engineer decides to number up.

A Helpful Tutorial You May Need!

Frequently Asked Questions (FAQs)

How Are The Cylinders Numbered On A Duramax?

On the driver’s side of the Duramax engine are the cylinder numbers 2, 4, 6 & 8, whereas on the passenger’s side are 1, 3, 5 & 7.

What Is The Cylinder Order On A 6.6 Duramax?

In a 6.6 Duramax cylinder, orders are as follows: 1 starts at the front and 8 ends at the back based on the piston rods connecting with the crankshaft. 2, 4, 6, and 8 are on the left or driver’s side, while 1, 3, 5, and 7 are on the right or passenger’s side. And the firing order is generally 1-2-7-8-4-5-6-3.

Where Is Cylinder 3 On A Duramax?

On a Duramax, cylinders 2, 4, 6 & 8 are placed on the driver’s side, while cylinders 1, 3, 5 & 7 are located on the passenger’s side. So, cylinder 3 on a Duramax is on the right-hand side or passenger’s side, second from the front.

Where Is Number 6 Glow Plug On Duramax?

Number 6 glow plug is located on Duramax’s driver’s side, third plug from the back. This glow plug is at the left end of the engine.

Where Is The Number 8 Glow Plug On Duramax?

On the driver’s side of the Duramax, the number 8 glow plug is oriented towards the bulkhead or firewall. You will find it on the left-hand side of your hand.

Wrapping Up

We are confident that this article successfully explains every detail to you about Duramax cylinder numbers. After reading this, you can easily define the cylinder-related problems with your Duramax engine and then take the necessary steps to fix them correctly.

However, if you still have any questions regarding this topic, please don’t hesitate to write to us. We will be happy to assist in a quick time.

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D Conroy

Meet our senior writer and content manager of Automasterx. He has worked in several mechanical garages and mastered different vehicle diagnoses and parts repair. He never stops until finding out the ultimate solutions for any vehicle fault code. However, ensuring the only solid solutions for each vehicle malfunction is his core part of the duty, alongside analyzing fault codes and signals.

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