Project FD RX7 Restomod: Part 20 – Competition Clutch Triple Disc Organic Clutch

We chose the Competition Clutch Triple Disc Organic Clutch now that our FD RX-7 will be equipped with the CD009 Transmission swap.

In any car build, it is important to have a plan and work towards that end goal.  In Part 7 and Part 17, we were excited to use McLeod’s twin disc RST clutch for our FD due to its light pedal, amazing drivability and massive torque capacity.  We really liked how the clutch was ‘future-proof’ where we could send the clutch back to McLeod to replace the stock FD’s 1×23 spline clutch centers for the 1×26 spline clutch centers to be used on the Tremec T56 Magnum transmission swap that we were planning for.

However, in Part 18, our plans changed and we decided on upgrading the transmission right off the bat to the Nissan CD009 which has a lot of advantages over the T56 Magnum.  Unfortunately, the McLeod RST clutch does not fit this transmission and we had to look at an alternative solution.

Enter the Competition Clutch Triple Disc Organic Clutch (PN: 18410047S).  Rated at over 1,000 horsepower, this 7.25” triple disc clutch belongs to the “184” Competition Clutch series line and is the most economical way to get into a true racing clutch.

Available in 1-4 disc configurations, these clutches have a much lower Moment Of Inertia (M.O.I) than a stock style 10.5” clutch, and up to a 20% lower M.O.I. than other manufacturer’s racing clutches.  This allows for faster acceleration, quicker revving, quicker shift times, and reduced synchro/dog ring wear.

Competition Clutch Inc. (CCI) is one of the fastest growing performance clutch companies in North America.  As a sister-company to McLeod Racing (owned by the Wharton Automotive Group), Competition Clutch Inc. is the leader in the JDM / sport compact clutch and flywheel market supporting everything from street driven daily drivers on up to road race, drag, and drift cars.

With this clutch, we are using the Rotary-specific Multi-disc Fisch Racing Tech Billet Chromoly Flywheel (PN: 1-I2-0023) which his designed for any 7.25” multi-disc clutch applications.

The unique organic discs are made up of a proprietary blend of organic material that is uniform in consistency compared to traditional organic clutch discs that are made of carbon and woven aramid or metal fibers.  These discs deliver excellent drivability and smooth engagement for daily driving conditions while having the ability to absorb the shock of high-power abuse and providing superior holding capacity and longevity compared to woven disc organic clutches.

The Competition Clutch triple organic clutch has two center floating steel plates feature the Power-V drive system of angled legs that self-center the plate.  This design evens out the drive forces in the clutch, and provides an inherent dynamic balance.  This greatly improves reliability, smooth engagement, durability, and power efficiency by increasing the surface area contact of the clutch and lowering the stress on each component of the clutch.