the lower mounts you see on Gravana, RSM, or Carcustoms are all the same. no difference in them except price and color
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ok thanks, so no brand will be stiffer than the other? Pretty much what i'm saying I guess is that it doesn't metter whether I pick prothane, rsm, or rk?
Being relatively new to the scene, exactly how do aftermarket motor mounts assist performance? (I know, it's a stupid question but what can I say?)
They help give better power transfer to the ground. The stiffer mounts result in a more efficient transfer of power. You won't get any horsepower gains (well duh) but helps to use what you have. YOu will feel a bit of difference in acceleration from a standstill, as well as some possible in cabin dash vibrations due to the stiffness. Though some people don't really notice any of that at all..it just really depends
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FuGiTiVe wrote:ok thanks, so no brand will be stiffer than the other? Pretty much what i'm saying I guess is that it doesn't metter whether I pick prothane, rsm, or rk?
no it dont matter. just pick whatever is cheapest
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The mounts keep the engine from shifting around in the compartment. This also helps insure you don't mess up a header, if you don't have a flex pipe on you exhaust.
i have RK's...there pretty nice...the ones you are looking at may be diffrent..the bushing durometer(the raiting of stifness for bushings) may be higher or lower...the higher the durometer then harder the bushings...which would result in less engine movement but more rattles
Will replacing only the upper mounts have enough of an effect or do I need to do the lower as well?
I order my upper mount from rk sport and i was impressed with the difference it made. I was able to feel the increase in torque and very little vibrations through the cabinet. When I installed the lower engine mount from prothane (order from gravana), the increase in torque recovered was greatly felt but at the sacrifice of a constant vibration through the entire car! I don't mind the vibrations but sooner or later it will get to me so i'll be saving my oem lower mount in case i want the performance one out.
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Brad Knight wrote:Will replacing only the upper mounts have enough of an effect or do I need to do the lower as well?
honestly man, it's best to have both. there have been many discussions about which create more vibrations (meaning engine held in place better). and neither of them individually do a better job, it's mostly the pair of them together that make the difference. the upper mount is an INSERT made of polyurethane that fits inside the stock mount, the lower mount is a solid dogbone mount, with a firmer bushing, which is what creates the stiffness. the only other thing you could do for a bottom mount is have a custom dogbone mount made with a metal bushing... but i don't think you'd want that. i'm an automatic and my car vibrates much worse than most of the manuals
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i have both
get a lightened or underdiven pulley and most of the vibes go away
99redz24 wrote:the lower mounts you see on Gravana, RSM, or Carcustoms are all the same. no difference in them except price and color
What he said.
And for the record RSM is a very good company that makes great products.
Like Spotabee said, you should replace both. If you can't afford to do both at the same time, get the lower first, than the upper.
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theL61 wrote:i have both
get a lightened or underdiven pulley and most of the vibes go away
god i hope so. i'm installing my RK crank pulley this weekend, i hope that takes some of the vibes away. it gets old to have my steering wheel and dash vibrating at stoplights.
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I have a mark pain mount for sale (rk mount with softer bushings) email me if interested
phlatcav@gmail.com
get them from carcustoms.net FREE SHIPPING
btw the mark pain mounts with softer bushings... don't do as much. softer bushings = less vibrations = not solid mount. why pay?
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Spotabee Racing wrote:btw the mark pain mounts with softer bushings... don't do as much. softer bushings = less vibrations = not solid mount. why pay?
sorry but the softes so no minimal it still does the same job.
the softer bushings my be a good idea but they dont last as long. i know a guy who has a lower mount on his 2.4 from MP and the bushings are all gone
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