How Much Does it Cost to Bore an Engine & Cylinder? [2021]

Boring is an engineering process where the cylinders of an engine are widened. With the help of machines, engineers widen and taper the cylinders of an engine. This increases the overall displacement of an engine.

Mathematical expression to calculate displacement,

“Engine displacement = π/4 * bore² * stroke * number of cylinders.”

An increase in the displacement results in more horsepower and torque for the engine. Displacement will also determine the fuel efficiency of your engine. So, an overall balance is necessary for the boring process.

One has to visit a machine shop for doing this. This is not possible to do without a machine shop.

How Much Does it Cost to Bore an Engine and Cylinder
How Much Does it Cost to Bore an Engine and Cylinder

How much does it cost to bore a cylinder?

Boring a cylinder is a rigorous job with advanced machinery. This needs proper expertise and care. This is not the type of thing you do yourself if you are not experienced in the stuff.

The typical cost of boring a cylinder is around $250. So, getting a quality boring can cost you $40-$50 per stroke for a four-stroke engine and $50-$60 per hole for a two-stroke engine.

In a two-stroke engine, it takes more time to chamfer the parts. That’s why the cost is more than the four-stroke. The actual cost will vary depending on a number of things. Let’s look at the costs of boring a car cylinder and a motorcycle cylinder individually.

Cylinder Boring Cost Summary

Here are the details of all average costs of cylinder boring for two-stroke, four-stroke, and motorcycle boring

Average Cost of Boring$250
Two-Stroke & Four-Stroke Cost$50-$60, $40-$50 (per hole)
Car Boring (V8, V6, Inline 6) Cost$275, $245, $230
Motorcycle Boring Cost$75
Honing (V8, V6, Inline 6) Cost$130, $125, $125

How much does it cost to bore an engine: Estimated cost of boring car cylinders

Boring car cylinders in the more expensive of the two. It will increase a car’s overall performance. Boring is also necessary for the engine rebuilding process. So, what is the cost of boring an engine?

Engine Boring Cost Summary

There are 3 types of engine boring costs, such as V8, V6, and Inline 6 engine.

“V8” Boring Engine Cost$275
“V6” Boring Engine Cost $245
“Inline 6” Engine Cost$230

Motorcycle Cylinder Boring Cost

The cost of boring motorcycle cylinders is different from the cost of boring car cylinders. The engines in the motorcycles are relatively small and the design and engineering also vary from those of the cars. They have different size pistons. 

The boring gives a motorcycle more power and fuel efficiency. A motorcycle typically comes with a two or four-cycle. The Costs of cylinder boring and honing are the same more or less.

Honing, Boring and Fitting Piston and Rings will cost $75 per hole. The cost of boring, honing, and piton fitting of a “Harley Davidson” is also $75 per hole.

Costs of Honing Cylinders

How much can you hone a cylinder? Here we listed the full price list of honing cylinders

“V8” Boring Engine$130
“V6” Boring Engine $125
“Inline 6” Boring Engine $125

Why Boring a Cylinder?

The cylinders in the engine are not the type of parts that are changed or repaired often. These are the most important parts of an engine. Located in the very depth, this part gives the car its real power. They don’t really get much attention for years.

After years of use, the bores get damaged and they affect the overall performance of the car. This also causes the car to take up more fuel than usual.

Benefits of Boring an Engine

The constant friction of the pistons and the bores is responsible for this damage. Cylinder heads along with the cylinder wall might get damaged too.  So, for engine performance optimization, boring is absolutely necessary.

A car will give better performance with better cylinders. Boring will increase the horsepower, the torque, and the overall fuel efficiency of the engine. Also, when rebuilding a car, boring is done to get the car to its natural condition. This is why boring is so important.

Things to keep in mind before boring a cylinder

You should be aware of certain things while boring a cylinder. This will help you make better decisions.

  • Don’t go or boring if it is not absolutely necessary. Remember doing the hot tanking in time.
  • Look for a skilled professional and spend extra money if necessary. This is the core part of your car engine, so you need to be as delicate as possible.
  • Don’t be too much on the power. Try to achieve a balanced optimization of power and efficiency.
  • Get your math right. This will help to achieve ultimate optimization.
  • Be careful with the cam bearings. Cam bearings help the valves to work proficiently.

Balancing of Power and Efficiency

The more displacement your engine has, the more power you will get. But it is not always about power. You need to be aware of the bore and stroke ratio and go for a balanced optimization. A stroke is a distance a piston travels in the bore vertically.

You can optimize Bore and Stroke for different levels of performance. For example, the F1 car engines use a very small displacement with wider bores and smaller strokes. This setting optimizes the engine to take out as much power as possible.

You know why! Cause racing is all about power and speed. There are different settings you can go for. Choose Wisely! Also, find out how you can turbocharge a car to speed it up?

Stroking Vs Boring – Does boring an engine increase horsepower?

There is no universal decision on which one is better. The engineers are constantly experimenting with the engine design to optimize performance. So anyway! Which one is better?

We see typically, the longer the stroke, the more time it takes for the pistons to achieve a rep. This increases the time of the piston movement and generally, it means less displacement. The ultimate goal is to achieve more displacement for more power.

But there is something else, you need to factor in things like oiling. These changes and complicates everything. A piston moving in so much speed makes it so much harder. So, I say to let the professionals deal with it.     

We can simply go to an engineer and sat what we want from the engine and he/she will optimize it accordingly.

A guide to boring an engine & cylinder

  • Don’t take shortcuts. Take your time and build a firm foundation.
  • Get hot tanking done. Hot tanking increases the performance and gives a good look.
  • Align boring with your optimal performance requirements.
  • Complete the honing process with quality finishing.
  • Deck the block with great care, otherwise, this can cause irregularities like compression and coolant leaks.
  • Complete the boring and honing process and check for any irregularities.

Share your opinions about the topic “cylinder boring prices” that we discussed today in the comment section.

Here are more articles you can enjoy

How Much Does it Cost to Paint Rims?
How Much Does it Cost to Fix a Tail Light?
How Much Does it Cost to Paint a Bumper Cover?
How Much Does it Cost to Buff Out a Scratch in a Car?
How Much Does it Cost to Install Auxiliary Port in Car?

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top