Lexus GX 460 is a luxurious, comfortable, and secure SUV that supports off-roading and can accommodate around 6 to 7 people.
It has 4.6 liters, V-8 engine that comprise a timing chain in all variants from the year 2006 with improved engine performance and controlled movements of crankshaft-camshaft.
Does Lexus GX 460 Have Timing Belt Or Chain? Lexus GX 460 has a timing belt in older models of 2002 to 2005 and early 2006. But, variants of 2007 to 2013 and 2014 to 2022 have timing chains due to quick problem troubleshooting, longer lifespan, firm installation, precise sizes, and no broken parts. The chains do not require frequent replacement, but you can change them from 157000 miles to 210000 miles in around $1800 to $2200. However, the manufacturers avoided belts due to unwanted sounds, unsynchronized crankshaft, and excessive engine idling.
The chains are thicker, durable, and more efficient than the timing belts. However, the automobile industry rejected the chain in the late 70s and 80s.
But, from the 90s to the modern era, the chains have marked their position in all layouts of combustion engines.
What are timing belts and a chain on a Lexus GX 460?
The timing belts and chains are beneficial components of the combustion engines that control the synchronized movements of crankshafts and camshafts.
As a result, the engine’s valves open and close with appropriate timing, and the machinery works with better performance.
Which models of Lexus GX 460 have a timing belt and why?
The older Lexus models comprise a timing belt with combustion engines. The manufacturers installed a belt to control the valve because it was cheaper than other components.
The 2002 to 2005 variants have timing belts. Also, a few models of the year 2006 have these items because they comprise rubber material which is quieter than stainless steel.
In addition, the old models provide silent engine performance for several hours with minimum problems.
Rubber belts are part of older variants due to chemical resistance, lightweight, corrosion repellent property, and high transmission efficiency.
Which models of Lexus GX 460 have a chain and why?
All new models of GX 460 have timing chains due to a sudden increase in the trend, quick installations, and better performance with more shelf life.
The 2005 to 2006 models have either a belt or a chain. But, the variants of 2007 to 2013 have a timing chain.
Moreover, the manufacturers installed these parts in all the latest models from 2014 to 2022.
As a result, it has made its mark in the combustion engines and became a permanent part of these layouts.
What are the benefits of a timing chain on a Lexus GX 460?
The manufacturing companies declared the timing chain one of the best components for V-8 cylindrical engines due to the following benefits.
It has several advantages, but I have explained five of them.
Clear symptoms for problems
It is less vulnerable to damages due to manufacturing material and other linked qualities.
But, it helps in troubleshooting its internal problems, and you can replace it immediately.
It produces specific sounds that are loud. The driver can hear these unwanted sounds produced by the engine.
The clear sign indicates the problems at the initial stages, and it results in instant repairing and replacement without engine damage.
These are made of metal and cannot break due to external factors.
The chain manufacturers provide lifetime warranties because they have high-quality built-in materials.
Therefore, it resulted in a revolutionary change to install these chains in these luxurious SUVs.
Chains have a firm installation on their mounting points. However, they are efficient because engine oil cannot affect them.
They stabilize on the pulley without any slippery effect.
As a result, you can add oil without any pressure and make the system stable for several years.
In addition, the chain can tolerate high engine powers due to metal material and stable mounting.
The rubber material can expand or gets short due to high-temperature conditions. This is because they have a metal composition resistant to heat and high-temperature conditions.
As a result, it never shortens or increases the standard length.
Furthermore, it fixes at the installation spot without any problem. Also, it maintains its purchase size and remains unaffected by engine heat.
No broken parts
The internal changes of the engine cannot break this chain.
The chain withholds its appearance and quality for many years.
Also, it stabilizes with improved engine performance and better control of the valves and crankshaft.
How often to replace a Lexus GX 460 timing chain, and how much does it cost?
The timing chain does not require replacement because they have high-quality composition material.
In addition, they have a similar lifespan as the engine of an SUV.
But, the engine requires maintenance and control services. In addition, you cannot leave the machinery without cleaning and lubrication.
The compatible oil in the engine keeps it safe for a long time.
However, a few people recommend its replacement for improved engine performance. You can replace it after around 157000 miles to 210000 miles.
It covers far more miles than a timing belt, and you can remove a chain without any surface or internal damage.
Its replacement is a costly procedure and involves labor costs because the installation requires professional expertise.
You have to change the tensioner of the chain, and it may cost you around $1800 to $2200 according to the services of an auto repair shop.
In addition, the labor charges according to the engine’s condition, working hours, and procedure time.
The labor may charge you around $1400 to $1830. However, the chain is a cost-effective component, and you can get it for $400 to $550.
However, the prices vary according to manufacturing brands, type, and quality of the material.
Why do the new models of Lexus GX 460 lack a timing belt?
The latest models of the Lexus GX 460 lack the timing belt because it is no longer compatible with combustion engines.
These belts rotate between the camshaft and crankshaft of the engine. It has hollow spaces that hold the surface of these components, but they break due to excessive usage.
As a result, it produces loud and undesirable sounds. In addition, the ticking sounds indicate a problem in this part that can harm the engine in the future.
The manufacturers removed these to avoid these mechanical problems.
Irregular movements of the crankshaft
This belt controls the timing and movement of the crankshaft. But, a malfunctioning part can disturb it and results in an irregular performance of pistons.
They move abnormally, and the belt slips from the pulley with excessive oil leakage.
The air mixes with fuel and injects at the wrong time. As a result, the ignition time changes, and the engine undergoes misfire.
Excessive idling of the engine
Malfunctioning of these belts decreases the standard engine’s performance. As a result, it suffers from random idling and produces high sounds of internal frictions.
A running engine produces a vibrational effect that disturbs the driver and other travelers.
The manufacturing companies disliked the engine idling and preferred chains.
Broken engine components
Excessive rubbing of internal components results in several damages. First, the pistons and camshafts lose their standard performance due to surface damages.
It cannot control and synchronize them in their standard performance.