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I made my own thread with the questions, but thought I'd post it here too
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Yesterday I installed the Front and BOTH Side motor mounts. I am using Medieval motor mounts. For those curious, total time was 2.5hrs (front litterally took 10minutes) and I was using a hoist at a garage.
The question I have was for the driver's side mount. How tight does the main bolt (the very long one that runs through the polyurethane bushing) need to be? If you tighten it REAL tight, the bushing begins to balloon, but if you don't tighten it enough the mount is able to freely move. Remember this mount is attached to a large metal bracket that gets bolts to the transmission.
The other question I had was about the two smaller washer and two smaller bolts that the set of 4 medieval mounts came with. The very large bolt and washer and nut was used on the passenger side mount. The two smaller bolts I determined are used for the front mount. I am left with the two smaller washers. What are they for.
I have not installed the rear mount.
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Okay, how about a 1st impression review
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Before, I knew the mounts were at least very soft and certainly on their way out. I would get wheel hop sometimes if my clutching out wasn't perfectly in-sync with the gas pedal. Generally, you could just tell and feel the motor was moving around TOO much.
I really have no intention of modifying this car. I don't want it lowered, I don't need an exhaust, etc. So my goal with these mounts was to remove the horribly-poopy wheel hop and other negative aspects of crappy mounts while maintaining a near vibrationless and quiet car.
I installed the two side mounts and the front mount from Medieval.
First off, the vibrations. Well, at idle it is not bad. It certainly is noticable from worn stock mounts, but if my idle dips (probably cause of EGR) then it is really bad. At speed and driving around you feel in the pedal and steering wheel, but is really isn't bad. At different RPMs you'll notice different things in the car will hit a resonance point and that is what PISSES me (and probably you) off the most. For example, my rear-vew mirror attachment (for a large one) vibrates around 3k. ARGGH. So, off I go to try and pad it so how. Of course, I would expect that over the course of 3 months or so the poly-urathane bushing will wear in and the vibrations will decrease, no less than how stock rubber mounts wear-in and go softer over time.
Secondly, motor noise. This is the aspect of going away from stock mounts that worries me most. The Protege5 is already not the quietest car. Certainly quieter than my old '92 Golf, but in stock form it was perfectly lovely to me. I should note, I care about engine noise only at sustained highway speeds. Well, with just these 3 mounts installed it is already noticeably louder. So much so, that I have doubts about keeping all three installed. At highway speeds, as well (though there are no vibrations to really care about or notice) the amount of additional engine noise that is heard is- at this point- too much for me and what I want out of this car. For example, I car hear this odd whiny-whistly kinda sound when I press the gas; I can hear the transmission far more; I can hear all the grunts and growls more now from the engine.
So there it is.
Shifting = AMAZING
Wheel-Hop = Non-Existent
Performance = Improved as power is put to the ground far better
Gas Pedal Input Repsonse = Much smoother, especially in 1st trying to creep along in stop and go traffic and you try to feather gas pedal.
I will NOT be installing the rear mount right now, and maybe not at all, ever. The three Medieval Mounts are holding the engine VERY still. I checked, it isn't moving a bit. I hear the rear mount transmits the most vibrations. I don't need any more. I'll be wearing in these three in over the course of the next few months, but at that point I may opt to revert back to stock mounts or some combination of medieval's and stock.
Here's a question to you folks, which of the 4 mounts, removes wheel-hop et al? Front? Which mount(s) should I revert back to stock to reduce engine noise? Driver's side one?
Cheers.
p.s. IF Medieval's mounts are supposed to provide the LEAST amount of vibrations & engine noise (they go hand-in-hand really) then I have NO idea how anyone could stand anything stiffer. LOL!