RR-Racing Engine Mounts
02-22-18, 10:18 AM
#1
RR-Racing Engine Mounts
Hi guys.
RR-Racing is releasing engine mounts. I just had mine installed...what a nice bang-for-your-buck mod like the USRS!
First, one of my engine mount bushings was shot (75k miles, 2008).
Impression: when electronics are off (as well as AC), the car idles at ~500 rpm and lacks rumble or throttle response from idle.
With sport mode off and the car warmed up, the throttle response has dramatically improved from idle. The car also has an audible idle grunt. Some vibration has transferred itself into the cabin during a 500 rpm idle as well. I personally enjoy it as it adds to a mroe visceral experience of the car (it is by no means a big increased in NVH, but it's noticeable at 500 rpm). With the AC or headlights on, the increase in NVH is subtle (at about 800 rpm idle).
I haven't had much seat time and it's been wet in Philadelphia, but overall throttle response has improved and the front end seems "tighter" under load while gaining speed. From the few WOT runs I've done, I'd use the words "smoother" or "more planted" to describe the change.
I think if you like the USRS, you'll like these
RR-Racing is releasing engine mounts. I just had mine installed...what a nice bang-for-your-buck mod like the USRS!
First, one of my engine mount bushings was shot (75k miles, 2008).
Impression: when electronics are off (as well as AC), the car idles at ~500 rpm and lacks rumble or throttle response from idle.
With sport mode off and the car warmed up, the throttle response has dramatically improved from idle. The car also has an audible idle grunt. Some vibration has transferred itself into the cabin during a 500 rpm idle as well. I personally enjoy it as it adds to a mroe visceral experience of the car (it is by no means a big increased in NVH, but it's noticeable at 500 rpm). With the AC or headlights on, the increase in NVH is subtle (at about 800 rpm idle).
I haven't had much seat time and it's been wet in Philadelphia, but overall throttle response has improved and the front end seems "tighter" under load while gaining speed. From the few WOT runs I've done, I'd use the words "smoother" or "more planted" to describe the change.
I think if you like the USRS, you'll like these
02-22-18, 01:28 PM
#4
Sponsor
iTrader: (1)
Hi all, we will announce more info and formal pricing soon and include video.
We have done many header installs in our shop, and I would say that 80% of cars have bushings that are obviously loose or completely degraded. If considering just 08-09’s, I would say that number is closer to 100%.
We have been testing these mounts on our supercharged cars, so I am confident that no other mount is more effective, more durable, or a better value.
Rafi
We have done many header installs in our shop, and I would say that 80% of cars have bushings that are obviously loose or completely degraded. If considering just 08-09’s, I would say that number is closer to 100%.
We have been testing these mounts on our supercharged cars, so I am confident that no other mount is more effective, more durable, or a better value.
Rafi
02-22-18, 01:55 PM
#5
to install these typically you need to drop the subframe. If you foresee yourself installing headers or a starter anytime soon then this would be the ideal time to install them or else its just a maintenance item that will be a "fun" install if you're just itching for a mod.
02-22-18, 01:58 PM
#6
Nice one RR 
. How would engine mounts improve throttle response, it will improve the feeling of the tightness of the car if your original mounts were rooted, eg stop the motor flopping around
. How would engine mounts improve throttle response, it will improve the feeling of the tightness of the car if your original mounts were rooted, eg stop the motor flopping around
02-22-18, 02:28 PM
#7
Sponsor
iTrader: (1)
to install these typically you need to drop the subframe. If you foresee yourself installing headers or a starter anytime soon then this would be the ideal time to install them or else its just a maintenance item that will be a "fun" install if you're just itching for a mod.
Rafi
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02-22-18, 05:46 PM
#8
I have been waiting for aftermarket motor mounts and finally...
Im sure with a transmission mount and upgrading diff bushings would help very much. Looking forward to getting the motor mounts. The feel of the car would be more planted.
Im sure with a transmission mount and upgrading diff bushings would help very much. Looking forward to getting the motor mounts. The feel of the car would be more planted.
Last edited by mahcah; 02-22-18 at 05:53 PM.
02-24-18, 04:42 PM
#10
Sponsor
iTrader: (1)
02-24-18, 11:27 PM
#11
Shame didnt know about these earlier, would of got them installed when i got the headers done.
02-25-18, 04:55 AM
#12
Sponsor
iTrader: (1)
Well, all you have to do to see what’s going on with stock mounts is open the hood and rev the engine. You will see how much it moves. When you are actually driving and transitioning from acceleration to engine braking it moves even more.
So anytime your inputs as a driver are being dampened like that, the slop takes away from the precise feel of the chassis, in a similar way that a soft & wobbly suspension would.
Of course, while it would be nice to eliminate all engine movement, it’s not practical because that would lead to excessive vibration. Our mounts reduce engine movement by 60-70% (compared to new OE mounts) without excess vibration. The only time you might feel any minor vibration is a idle in drive, but it’s very minor.
We are working on other parts for the ISF that have a similar goal, coming out in April.
Rafi
02-25-18, 06:32 AM
#13
Racer
I saw these on your IG page and thought they were only for the RCF, so these mounts also fit on the ISF?
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