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Well, after almost one year of having the MMI for my auto 3.9, yesterday I bite the bullet and decided to install them.
For those who may not remember, I was having the idea of mixing MMI hardness, race in front, street in the back just to see what would be the results and also, if the vibraitons where less.
Well, after a 3 hours install, putting the race MMI in the back and the softer street in the front, engine vibrations where extremely noticeable, up to the point of hearing some rattling inside.
Now, after a nice cooldown I swapped them and the rumble was still present but no vibrations (compared to the first setup)
But the engine is rock solid, no movement whatsoever and even seems to like the steadiness.
I wonder if sever engine rocking would cause false knocking or if now, that the engine feels almost welded to the car, would cause that.
As for the product itself. Great quality, ease of intallation (not counting getting to mount)
Word of advice.... I had to use a small file to smooth out the rubber casting inside the OEM mounts and that helped dramatically the process of install and removal later on.
Also, I used silicone grease instead of dish soap just to be sure that anything will react to the plastic.
For those who may not remember, I was having the idea of mixing MMI hardness, race in front, street in the back just to see what would be the results and also, if the vibraitons where less.
Well, after a 3 hours install, putting the race MMI in the back and the softer street in the front, engine vibrations where extremely noticeable, up to the point of hearing some rattling inside.
Now, after a nice cooldown I swapped them and the rumble was still present but no vibrations (compared to the first setup)
But the engine is rock solid, no movement whatsoever and even seems to like the steadiness.
I wonder if sever engine rocking would cause false knocking or if now, that the engine feels almost welded to the car, would cause that.
As for the product itself. Great quality, ease of intallation (not counting getting to mount)
Word of advice.... I had to use a small file to smooth out the rubber casting inside the OEM mounts and that helped dramatically the process of install and removal later on.
Also, I used silicone grease instead of dish soap just to be sure that anything will react to the plastic.
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