Polyurethane Engine Mounts Vs Rubber

Classic polyurthane bushings result in a sportier fee.

Polyurethane engine mounts vs rubber.

Rubber engine mounts vs polyurethane engine mounts poly tek has been manufacturing the best rubber and polyurethane engine mounts for over 60 years. If you re driving a stock car like a grandma then rubber is probably the best way to go to keep the nvh down. Rubber and polyurethane are used in many automotive applications because of their excellent reversible elastic deformation properties and excellent damping and energy absorption characteristics. This is the liquid polyurethane i used.

So for motor and transmission mounts when you think about rubber vs polyurethane it s all about what you re looking for in your vehicle. Brown dog motor mounts and motor mount lifts for jeep are available with interchangeable bushings. Https amzn to 2vppayy here s a detailed video showing you how to make polyurethane engine and transmission mounts f. Ultra flex rubber bushings dampen engine vibration slightly more than polyurethane.

Polyurethane also works well as it is very resistant to engine chemicals road salts heat and other factors that typically weaken rubber greatly increasing the lifespan. But polyurethane isn t the same as rubber. Companies like energy suspension and prothane offer polyurethane engine mounts that provide a compromise between rubber and rigid solid mounts. At transgold we believe rubber offers a number of benefits over polyurethane across a range of products including engine mounts and suspension.

While both materials offer a high level of elasticity and protection from water ingress though they aren. The harder properties of the polyurethane hold the engine in place better. Rubber mounts are ideal for stock or mildly modified street engines but as horsepower is increased it may be time to upgrade. Rubber drivetrain mounts from the factory your car will have rubber mounts supporting the engine transmission and differential.

Rubber engine mounts are durable and cost effective. Let s examine some typical places you will find rubber mounts and bushings to better understand why replacing them with stiff polyurethane can be beneficial or detrimental. From bushings and gaskets to tires and boots you ll find a variety of products made of these materials. This will likely be fine for what you re trying to get out of them but if you ever want to take your celica racing in the future you might want to invest in harder bushings.