HGT PRECISION FAQ

You can order by EMAIL or by calling +64 21 155 0999. We keep stock of ALL parts and ship via DHL, FedEx or UPS within 24 hours of receiving payment giving a 3-4 day global delivery time.

The answer to this regularly asked question is "it depends on your shift technique". Correct shifting technique on our dog box transmissions should see the dogs last between 4000-5000 race km or 2500-3125 race miles.

With the exception of 1st, all other gears are removable saving you money when it comes time to replace worn parts.

All HGT gearboxes are capable of flat shifting with shift times as low as 40 milliseconds, however, you must have an ECU capable of handling the closed-loop flat shift. For the differences between open and closed loop flat shift please click HERE. The HGT Precision Shift Cut Knob fits our own range of shift levers, but is also a generic fit for most other shift levers in the Motorsport industry  

We don't make adaptor plates as they just introduce another variable. Instead, we have custom-made Vernier Bell Housings to suit most RWD performance cars. Our front plate is the GM Muncie bolt pattern with current bell house offerings being:

 - BMW: In-Line 6, V8, V10

 - Ford: Aluminator, Barra, Coyote, Duratec series, Windsor

 - GM: LS OEM 168 tooth ring gear, 11"-12" clutch, front mount starter motor

 - GM: LS Race 110 tooth ring gear, 5.5"- 7.5" clutch, rear mount starter motor

 - Honda: K series in RWD, F20C S2000

 - Mazda: MZR-L series,13B, 20B, 26B Series 6 with rear mount starter motor

 - Mitsubishi: EVO 1/2/3 in RWD 

 - Nissan: SR20, RB25, RB26, RB30, VQ35 VQ37, VR38 in RWD, L-series

 - Toyota: 86, 1JZ, 2JZ, 1UZ, 3UZ, 3SGE Beams 

We're always developing others – just ask if you don't see your engine listed here.

We take great care to provide accurate bell houses in shape, size and machining. Bell houses, however, can get dropped in shipment or damaged in the workshop, and no two engine blocks are exactly the same. To ensure smooth running and perfect alignment of the engine, bell house and gearbox, you must index the Bellhouse to the Engine Crankshaft before you run the Gearbox. This is common practice in all professional race teams and is just part of their standard set up irrespective of the brand of bell or gearbox they choose to use. There are many videos on Youtube that explain this procedure. Sadly many just bolt the Bellhouse to the engine without checking and hope for the best. Hope is not a winning strategy when it comes to racing, so take the time to do it correctly...Index the Bell to the Crank - do it once, do it right. 

We currently offer the Toyota 14 Spline (V160/V161/6MT), Toyota 21 Spline (R154), GM 26 Spline, GM 26 Spline with Nissan Spigot, Mazda 23 Spline and Nissan 24 Spline. If you have a different requirement just ask, as we appreciate different regions have unique requirements.

Oil in the gearbox should be kept between 100 and 110 Degrees Celcius for optimum lubrication efficiency. If you are running the gearbox continuously for less than 15 minutes, then a cooler is generally not required. The Siemens VDO part #405 040001001 or Tilton Part #40-524 pumps work well when combined with a high-quality oil cooler. It's important to have the oil cooler located in a place with good airflow. Your ECU should be programmed to automatically turn the oil pump on at 110 Degrees C and off at 100 Degrees C to control temperatures in the gearbox. All HGT Gearboxes come fitted with a Bosch temperature sensor, ready to plug into your ECU.

HGT Gearboxes interface with Motec, Shiftec, Life Racing and Geartronics Paddle-Shift systems with the simple addition of our custom made brackets.