RR-Racing Engine Mounts
Racer
Joined: Sep 2014
Posts: 1,521
Likes: 270
From: Nc
Dropping suframe is actually relatively easy. I expect most garages with lift can get the install done in 1.5hr or less. If doing headers, then yeah, install is free.
It completely stops engine movement. When transitioning on/off throttle, especially when feathering the throttle in corner exit or at track, throttle control feels more “connected” and predicatable.
Rafi
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
Thanks for your time and info!
V.
I'll wait for Rafi to respond but if the mount is not solid billet, then it will not completely eliminate engine movement. It looks to be 95 durometer mounts like the usrs so it will substantially decrease engine movement.
Pole Position
Joined: Feb 2015
Posts: 2,673
Likes: 408
From: Colorado
Here is the link verbiage posted for the lazy
DESCRIPTION
Excessive engine deflection equals wasted power! Additionally, stiffer engine mounts give you greater feel and control of throttle application, because energy is no longer wasted during engine deflection when transitioning on/off throttle - your throttle inputs are translated directly to the wheels!
Features and Specifications:
RR RACING ULTIMATE ENGINE MOUNTS FOR LEXUS ISF, RC F AND GS F
OUR PRICE: $289.99
SALE PRICE: $250.00
Savings: $39.99
DESCRIPTION
Excessive engine deflection equals wasted power! Additionally, stiffer engine mounts give you greater feel and control of throttle application, because energy is no longer wasted during engine deflection when transitioning on/off throttle - your throttle inputs are translated directly to the wheels!Features and Specifications:
- Superior Construction: Our engine mounts feature billet 6061-T6 aluminum construction, metric grade 10.9 hardware, and super durable 70 durometer Energy Suspension Hyperflex polyurethane bushing. Bushings are easy to service, but we are so confidant in the durability of our bushing that we offer a lifetime guarantee!
- Replace engine mounts when installing headers: We have found that MOST higher mileage ISF's already have torn or deteriorated engine mounts. Not only does this lead to vibration or excess engine movement, but it can also cause headers to touch the chassis.
- Easy Installation: Installation requires removal of the subframe, and can be accomplished by a garage in about 1-1.5hrs. We strongly recommend installing these engine mounts when replacing headers, as the area will be easily accessible during header installation.
- Minimal increase in Vibration: Although our engine mounts are significantly stiffer than stock, essentially eliminating all engine movement, increase in vibration is very minimal at idle only. In some cases, if the stock engine mounts have deteriorated, you may notice a reduction in vibration.
RR RACING ULTIMATE ENGINE MOUNTS FOR LEXUS ISF, RC F AND GS F
OUR PRICE: $289.99SALE PRICE: $250.00
Savings: $39.99
Driver
Joined: May 2015
Posts: 121
Likes: 7
From: CA
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
I'm curious.... What are these other parts for the ISF you speak of?? Definitely thinking about getting the engine mounts and the USRS and installing together.
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Driver
Joined: Oct 2016
Posts: 178
Likes: 27
From: Ohio
Rafi
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SUPERCHARGERS : ECU TUNING : SUSPENSION : EXHAUST : PPE MASTER DEALER
SUPERCHARGERS : ECU TUNING : SUSPENSION : EXHAUST : PPE MASTER DEALER
