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NC2/3 MX-5 Built Transmission - 6 Speed

NC2/3 MX-5 Built Transmission - 6 Speed

Regular price $2,000.00 USD
Regular price Sale price $2,000.00 USD
Sale Sold out
Please note this listing is for purchasing a reinforced NC2/3 6MT Transmission. If you have an NC1 6MT, and are looking to upgrade, select this option, with the NC1 core charge.

Current lead time is 4 weeks on all built transmissions. Please note that lead time is the approximate time that we will start on your order regardless of the time that your order is placed or when your transmission you shipped to us arrives. The lead time for your transmission begins when the order has been placed.

Currently, we provide two options for NC transmission builds. Prices listed include a useable core exchange or rebuilding your current transmission. A core charge of $1900 is applied in addition if no core is provided.

Stage 1 – $2,000 plus shipping
Stage 3- $4,000 plus shipping
Shot Peening Option- $ 200

Stage 1:
-Gearboxes are completely torn down, qualified, cleaned, and rebuilt, replacing seals, synchros, bearings, any failing gears/parts.
-Modifications are done to improve oiling and cooling of problem areas
-Machining is done to gear engagement teeth to improve gear engagement feel. Most race boxes get different engagement teeth timing to improve ability to shift for specific gears, so racing style and applications are important to disclose prior to rebuilds.
-Gear tooth machining to reduce temps, noise, and improve oil evacuation.
-Shift-bias modification for better shift feel and help to ensure proper gear engagement.
-All plastic bushings replaced with bronze or steel.
-Plastic bias spring spacers replaced with stainless steel.
-Billet steel bearing retainer plate to replace the aluminum one that bends and breaks.
-Upgraded bearings to handle higher performance and higher speed applications
-Partial break in on a bench dyno for verification
 
Stage 2: Highly recommended for racing/track applications using an aftermarket limited slip and or using slicks, for higher powered applications, and for applications using a lightweight flywheel and/or and unsprung clutch disk. Note: We do not recommend the use of lightweight flywheels and unsprung clutch disks. Both severely increase shock loads on the gear train with little to no measurable increases in performance.
-Includes all of stage 1
-Cryo treated gears for almost double the gear strength.

Stage 3: Highly recommended for endurance racing and boosted applications.
-Includes all of stage 2.
- Comes with a custom gearset that replaces 2nd gear, 3rd gear pair, 4th gear pair, input shaft, counter shaft, and 6th gear (.83 Ratio)
Gearset is made with a higher grade steel alloy (9310). Gear teeth are designed to take higher shock loads and the entire set is made to have superior oiling increasing the life of the transmission.

Shot Peening Option: Shot peening the parts in your transmission increases the surface strength of the gear. It will also increase oil retention of the gears which will help reduce transmission temps as well as wear and tear.


Please note these transmissions are built to order, and as such, they come with a lead time of about 1 month. If you will not be providing a working transmission to be rebuilt, please select the ‘no core’ option when purchasing. If you are providing a core, you will be responsible for shipping or delivering the transmission to our shop before we will ship the built transmission out. If you would like to receive a transmission before you ship your existing transmission, you will have to select the ‘no core’ option. Once the new transmission is installed, please contact us to arrange a core charge refund. We reserve the right to adjust the core price depending on condition of transmission. While most transmissions that are replaced in working condition will receive the full core refund, transmissions with sheared teeth, or other catastrophic damage will be refunded at a reduce value.

We recommend using Motorcraft XT-M5-QS Transmission fluid, and running the fluid for 1000 miles before flushing it and replacing the fluid. Transmission holds 2.5 Quarts of fluid, so the 5 quarts is enough to preform both initial break in, and refill after 1000 miles.

PLEASE NOTE: Transmissions must be drained of fluid before sending in for repair or core charge. A $25 clean up fee will be charged if the transmission arrives full of fluid.

Core return must arrive at Walter Motorsports no longer than 30 days after shipment of built transmission to be eligible for core charge refund. Cores received later than 30 days after shipment of built transmission will not be eligible for core charge refunds. Please reach out to us directly with any questions about this policy.

In order to ensure the best results, please follow our Transmission Break in Best Practices.

Note: All transmissions are shipped in an igloo cooler which is charged to the customer. This is the most secure method we have found to ship transmissions without damage. Please keep the cooler to send the transmission back for refreshes or rebuild in the future.
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