B-Series 3 Bolt Billet Motor Mount Swap Kit 96-00 Polyurethane B16 B18 (2024)

FAQs

Are polyurethane motor mounts worth it? ›

Polyurethane engine mounts provide a compromise between some of the benefits rubber and some of the benefits of solid mounts made of steel. Polyurethane can be compounded for higher durometers than rubber, which will hold the engine in place better than rubber compounded at softer durometers.

After reading online, it seems the rubber absorbs more of the vibrations of the engine and road, while the Poly is stiffer and transfers more of the vibrations to the cab. Rubber will last a few years, but Poly will last indefinitely.

Prothane manufactures their motor mounts with polyurethane which holds it's shape much better than rubber under the stress that a revving engine can cause. Polyurethane also brushes off engine fluids and other elements that cause rubber to break down faster.

Polyurethane Transfer Mounts are employed to protect expensive drive trains by reducing their dangerous vibrations and bending. Resistant to oil, grease, and abrasion, these mounts last longer than rubber OEM mounts.

Polyurethane (PU) Motor Mounts

These properties can provide enhanced performance and feel of the road, but tend to come at a higher cost. They also tend to be less resistant to heat, which can cause problems in an automotive application.

Aftermarket motor mounts can be a good alternative to OEM (original equipment manufacturer) motor mounts, especially if you are looking for a more cost-effective option. Some aftermarket motor mount manufacturers claim that their products are of similar or even better quality than OEM motor mounts.

Usually, engine mounts should last between at least 5-7 years, depending on the application. Still, we recommend getting them checked regularly when the vehicle is being serviced or when any other work is being carried out. This should maintain your engine and keep your driving experience as smooth as possible.

Overall, natural rubber, Neoprene, EPDM, and silicone are some of the best materials to use for rubber engine mounts.

The introduction of polyurethane into the cars bushing/isolation system will typically result in some form of increased noise or harshness. If you can accept the performance benefits as a trade off, then they're not too bad. Go back to rubber and DO NOT go solid. You will be much more annoyed by that.

Manufacturers can tweak the characteristics of the liquid used in these mounts, so they can design them to mitigate high or low-frequency vibrations based on a specific application. For this reason, they're also more expensive to design and manufacture.

Can I replace my own motor mounts? ›

You can replace motor mounts yourself if you have mechanical skills and the necessary tools, but hiring a professional is a good idea for those with limited experience.

Ride Quality: Due to their hardness, polyurethane bushings often lead to a bumpy ride. Since they're not as good at dampening, passengers are also subjected to a lot more noise and vibration.

For some vehicles and motor mounts, you may need to remove parts of the subframe or other engine bay parts to access the mounts, but if you take the time and have the correct tools, replacing your motor mounts is usually a Saturday job.

Cars usually have between two and four motor mounts. If one motor mount is damaged or worn, you can likely get away with just replacing that one.

Reasons That Engine Mounts Wear Out

Aggressive driving – Failing to use the clutch correctly or over-revving the engine means the mounts endure more stress. Fluid leaks – If engine oil or other fluids leak onto the mounts, the rubber can weaken. Over time, the material degrades and leads to excessive vibration.

Polyurethane engine mounts, compared to traditional rubber mounts, have a multitude of benefits, including but not limited to: Unlike rubber, polyurethane engine mounts are highly resistant to oil, fuel, coolants, grease, and debris. Polyurethane engine mounts perform extremely well in hot and cold temperatures.

Low Carbon Steel is the most commonly used metal in engine mounts because it is cost effective and strong. However, aluminum is also a top contender for engine mount metals because it provides higher strength and a lighter weight. Although it does come at a higher cost than steel.

For buyers who are looking for something similar to natural rubber but with better oil resistance than Neoprene is the perfect choice. It is not widely available for standard engine mounts, but it can be used in custom designed mounts. Neoprene engine mounts are sure to be reliable and provide long-lasting durability.