As some of you might have already seen my other review, the short of it is that ESMM add performance to the car by reducing wheel hop but take away from comfort by adding a lot of vibrations, which is why I decided to take out the ESMM and put in some polyutheraned stock mounts back in place to see if these would accomplish the same effect as aftermarket branded mounts.
Having already had a close inspection of the construction of the stock DC5R front mount, its easy to see why our engines move and flex alot when under load. There is plenty of gap inside each mount as the mounts are not solid, and the rubber itself in the actual mount is not stiff at all, providing it with plenty of room for movement. Seeing how the ESMM filled out the stock mounts nicely and reduced its movement makes it easy to realise that the stock mounts aren't hard to improve on - fill up the gaps inside, so that the mounts don't provide as much flex for the engine when under load and overfill a little bit on the sides so that the mounts fit more snug inside the stock mounting position, however don't overfill to the point where they touch the mounting brackets and transfer vibrations like the ESMM do. Thats a big no-no.
Polyutherane is a rubber like liquid sealant that comes in small tubes - think about something like Selleys No-Gaps or something like that. Other people choose to use Sikaflex, however whatever it is, its basically all the same - a soft rubberish compound that hardens when dried and provides a bit of flex when pushed.
I bought some stock mounts from whtdc2 (Thanks Stephen!) and it just so happened that Wayne had some left over polyutherane that he was intending to use with another friends' DC2 mounts, so he offered that to me to use in the meantime. I can't remember off the top of my head what grade hardness it was and I'm sure Wayne can fill you in on that later on, but it was a white coloured polyutherane made by Selleys which we bought from Bunnings for around about $16/tube. Each tube has enough compound to poly up two mounts easily, so you can get away with using two tubes for each sets of engine mounts (4 mounts in total).
Wayne did the filling up because he'd already done it for his mounts for his DC2 a couple of weeks ago. The general process was: fill up from the middle of the mount with the nozzle of the gun under the liquid poly at all times. This eliminates the chance of getting airbubbles. I then tried to smooth out the poly with my fingers and a pair of gloves after the mount had been filled. NOTE: use gloves! The stuff is hard to get off fingers!
For the front and rear mount, I used a softer compound and for the right side mount, I used a harder compound. The thought behind this was that the vibrations are transferred into the cabin from the front and rears when the engine is flexing so to minimise vibrations, go as soft as possible.
During the first weekend of the install, I only managed to get the front mount in before we decided to do something else and call it a day. With the front mount in only, the car produced very minimal extra vibrations from stock however I could immediately tell that the mounts had made a small bit of difference in the field of response. When launching the car, I managed to wheel hop a little bit but the difference was much better than with the stock mounts.
About two weekends after, I managed to get the rear and right side mount in after a grueling session under the car. The difference and feel was more obvious and like the ESMM, the engine produced even less flex when under load. The engine feels a lot more responsive now and after trying to launch my car, I just get plenty of wheelspin... awesome... Vibrations are barely a smidge over stock - the only obvious factor is the feedback from the steering wheel which I would compared to 1/10th of what the ESMM felt like. When the aircon is turned on, the vibrations are slightly more accented but nothing like what the ESMM or even Innovatives are like for that matter (comparing to Airbox23) Driving the car feels a pleasure again and would highly reccomend this mod to anyone who DIYs their own car
I personally love this mod as it gives the same kind of performance as upgraded mounts but with barely any discomfort factor.
Comments Wayne? Whats your opinion when compared to the ESMM and stock type S?
Having already had a close inspection of the construction of the stock DC5R front mount, its easy to see why our engines move and flex alot when under load. There is plenty of gap inside each mount as the mounts are not solid, and the rubber itself in the actual mount is not stiff at all, providing it with plenty of room for movement. Seeing how the ESMM filled out the stock mounts nicely and reduced its movement makes it easy to realise that the stock mounts aren't hard to improve on - fill up the gaps inside, so that the mounts don't provide as much flex for the engine when under load and overfill a little bit on the sides so that the mounts fit more snug inside the stock mounting position, however don't overfill to the point where they touch the mounting brackets and transfer vibrations like the ESMM do. Thats a big no-no.
Polyutherane is a rubber like liquid sealant that comes in small tubes - think about something like Selleys No-Gaps or something like that. Other people choose to use Sikaflex, however whatever it is, its basically all the same - a soft rubberish compound that hardens when dried and provides a bit of flex when pushed.
I bought some stock mounts from whtdc2 (Thanks Stephen!) and it just so happened that Wayne had some left over polyutherane that he was intending to use with another friends' DC2 mounts, so he offered that to me to use in the meantime. I can't remember off the top of my head what grade hardness it was and I'm sure Wayne can fill you in on that later on, but it was a white coloured polyutherane made by Selleys which we bought from Bunnings for around about $16/tube. Each tube has enough compound to poly up two mounts easily, so you can get away with using two tubes for each sets of engine mounts (4 mounts in total).
Wayne did the filling up because he'd already done it for his mounts for his DC2 a couple of weeks ago. The general process was: fill up from the middle of the mount with the nozzle of the gun under the liquid poly at all times. This eliminates the chance of getting airbubbles. I then tried to smooth out the poly with my fingers and a pair of gloves after the mount had been filled. NOTE: use gloves! The stuff is hard to get off fingers!
For the front and rear mount, I used a softer compound and for the right side mount, I used a harder compound. The thought behind this was that the vibrations are transferred into the cabin from the front and rears when the engine is flexing so to minimise vibrations, go as soft as possible.
During the first weekend of the install, I only managed to get the front mount in before we decided to do something else and call it a day. With the front mount in only, the car produced very minimal extra vibrations from stock however I could immediately tell that the mounts had made a small bit of difference in the field of response. When launching the car, I managed to wheel hop a little bit but the difference was much better than with the stock mounts.
About two weekends after, I managed to get the rear and right side mount in after a grueling session under the car. The difference and feel was more obvious and like the ESMM, the engine produced even less flex when under load. The engine feels a lot more responsive now and after trying to launch my car, I just get plenty of wheelspin... awesome... Vibrations are barely a smidge over stock - the only obvious factor is the feedback from the steering wheel which I would compared to 1/10th of what the ESMM felt like. When the aircon is turned on, the vibrations are slightly more accented but nothing like what the ESMM or even Innovatives are like for that matter (comparing to Airbox23) Driving the car feels a pleasure again and would highly reccomend this mod to anyone who DIYs their own car
I personally love this mod as it gives the same kind of performance as upgraded mounts but with barely any discomfort factor.
Comments Wayne? Whats your opinion when compared to the ESMM and stock type S?
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