WHITE KNIGHT                 

The K11 Micra has been a cult car in Japan and UK for at least 10 years due to its brisk performance, good handling and cheap price . The very dedicated band of followers is rapidly growing in Australia micra.com.au .

At first glance this innocent looking Micra is in nice condition, but has no hint of being anything but a tidy well kept vehicle. David (the owner) wanted it to be clean looking but also something different and surprising. As in real life, what you see on the outside gives no hint of the sophistication under the skin.  David gave in to his dark side when it came to engine development and now this car has 2.5 times the stock power output at the wheels! 

  CLICK TO ENLARGE!

No claims are made for performance, which is described as "adequate".  These cars are often called sleepers or "Q" ships. Q ships were heavily armed vessels used in World war 2 that were made to look innocent freighters till they came up to their target J.

The CG13 DE engine is supercharged and has a front mount intercooler. The forged pistons* used in the engine have ceramic coated crowns and friction modified skirts. This is the same technology as used in the V8 Supercar team engines. The pistons are fitted with ductile iron top and gapless second rings*. Billet 4140 con rods* with ARP rod bolts and cap dowels are used. The block had to be relieved for rod clearance.

The supercharger is a Toyota SC12 unit. It uses a custom sized alloy crank pulley* that gives a 50% overdrive speed. The cylinder head was ported and has special grind cams* designed for supercharging. Custom large bore headers are fitted. Fuel and ignition are controlled by an Autronic SMC* auto tune ECU. Cooling is via a custom alloy radiator* with greatly increased cooling capacity.

The flywheel* is alloy, fitted with a custom 3 puck clutch*.

A larger gearbox* from another Nissan was needed to get over the problem of  stock gearboxes shredding 2nd gear. The gearbox bell housing  was modified to suit the micra engine. A special starter* had to be used with an adapter plate to suit the differing flywheel offset and starter position. Another advantage of the larger gearbox was a taller final drive ratio. 

The suspension and braking has been upgraded to suit the increase in power. Koni externally adjustable* shocks are used front and rear with a full Whiteline kit for bars and K Mac springs.

This micra has had a 2 year development program. Datrats are proud to have been a part of this program.  We supplied the engine, gearbox and all parts marked with the red asterisk. * Laurie at Rotech in Devonport put it all together and made it work. 

The car is complete and requires no further work except being driven. It is very easy to drive and as a result David's wife regularly drives the car to work as a change from her turbocharged micra.  

We have had these clutches custom made for HD Micra applications. The clutch uses an organic plate, higher clamp load diaphragm and 190mm pressure plate.

These clutch kits will bolt up to standard flywheels. If used on after market flywheels, check the contact surface diameter is large enough for this plate.

NOTE! This kit will soon be available with a 3 button ceramic cushion plate.

MICRA ADJUSTABLE CAM GEARS 

 Used to set up camshafts to specification or modify timing of existing cams.

$300 WITH DONOR SPROCKETS

WARNING!  VARYING CAM TIMING MUST BE CARRIED OUT BY A SUITABLY QUALIFIED PERSON OR EXTENSIVE ENGINE DAMAGE WILL RESULT 

$850

The rods are to suit CG13 or CG10 using stock 18mm gudgeon pins. If used with forged pistons for NA engine the rods are stock length. For forced induction engines the rods are made 2mm shorter and a larger bowl machined in the piston to lower compression.

We now have rods made to specification by Carrillo from forged billets rather than making rods from straight grain metal.

Prices depend on the US dollar exchange but around $1700 AUD is a guide with and exchange rate of approximately 66c. 

Set of 4 forged pistons 1.2,1.2 2.8 mm rings and 18mm gudgeon pins.

With ceramic coating on  crown and friction modified skirts. 

$1500/set with ceramic coating

ALLOY FLYWHEELS TO LOWER DRIVE TRAIN INERTIA.

Micra flywheels NOW WITH  190 mm FRICTION FACING!!! 

These new design flywheels will accept either 180 mm standard sized clutch assemblies or 190mm extra heavy duty clutch assemblies.

The flywheels have lower mass than steel wheels (3.3 kg). The ring gear is also replaceable. These wheels have a higher thermal absorption mass than steel flywheels due to the greater volume of alloy. The friction face insert is an armoured steel plate that is also replaceable if damaged due to extreme use.

$660 with donor ring gear

MADE FROM A SPECIAL GRADE OF BILLET ALUMINIUM USED FOR AIR FRAMES OF COMBAT AIRCRAFT.

Most specialist pulleys - either multi groove or tooth belt  approx $600

Cams are individually spray welded to build up each lobe. The lobes are then ground to the required profile.

Price by application