Motor mount cups? Do I need them?
#1
Motor mount cups? Do I need them?
Hi, I installed roadstertuner mounts last winter, and tested the car just few days ago. It was horrible, way too much rattle and noise for a streetcar. So I ordered "oem-style" comp mounts, but I have losen my engine mount cups!! Can I drive without them, what is their function?
Cheers in advance!
Cheers in advance!
#5
Former Vendor
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I believe they are there as a backup to keep your motor (somewhat) in place. If your motor mounts are broken into two pieces, without the cup your motor would be able to move freely on that side but with the cup it keeps it (somewhat) located in the right spot.
#7
I kept my cups but drilled big 1" holes in them so I can see if the rubber is damaged and lighten them up a bit.
Tried AWR mounts and decided they were way too harsh for anything that saw street use.
Bob
#16
I don't run with them with the latest installation. I don't know if I'd run them necessarily.
The "safety" aspect I do not buy into - if you crash hard enough to rip the engine/drivetrain out of where they are braced/installed into, you've crashed hard enough to rip the rubber right out of the safety cup.
I think that it is there more in case you have a ripped motor mount and drive it. The RX7s have a similar motor mount setup, and it exists for the exact same purpose - it's there for if you are a normal driver, never check your motor mounts, and only take it as a measure of last resort to a mechanic.
The "safety" aspect I do not buy into - if you crash hard enough to rip the engine/drivetrain out of where they are braced/installed into, you've crashed hard enough to rip the rubber right out of the safety cup.
I think that it is there more in case you have a ripped motor mount and drive it. The RX7s have a similar motor mount setup, and it exists for the exact same purpose - it's there for if you are a normal driver, never check your motor mounts, and only take it as a measure of last resort to a mechanic.
#17
1) The rubber part of the motor mount which connects the engine to the chassis fails completely
2) The rubber mount is over loaded and deforms too much.
With the cup in place the design of the system behaves both as a failsafe and an overload bump stop limiting motion.
Bob
#18
If you want to get rid of them for weight savings, take a dump before jumping into the car and leave them be