HKS really has a handle on tuning the VR38DETT engine in the Nissan R35 GT-R and is now knocking on a genuine 1000 bhp power output!

As part of this process the technicians at HKS in Japan have uncovered the major restrictions on the VR38DETT engine and are rapidly developing top quality components to improve matters. And their latest release is a great case in point – a new high performance plenum (called the High-Flow Surge Kit) which is designed to equalise the intake air volume across all six cylinders of the VR38DETT motor, while boosting throttle response and the air flow demands of a 1000 bhp engine.

Here are the key facts about the HKS High Flow Surge Kit for the Nissan R35 GT-R:-

• Cast plenum that’s seperate from the VR38DETT’s intake manifold
• Larger diameter ports and different port shape to suit high power engines
• Plenum volume optimised for engine reponse rather than top end bhp to ensure a good spread of power
• Funnel design in end tanks of the ports to optimise air flow from the sides of the plenum to increase air volume
• Allows reuse of stock air temperature sensor, adaptors, breather pipe, connecting pipe

Fitment of the High-Flow Surge tank is typically well thought our by HKS – it’s a straight bolt on job without the need for cutting, crimping or any other intrusive procedures that might detract from reliability on what’s not exactly a cheap car…

And that’s why HKS has also developed a Twin Injector Pro Kit for to suit the new plenum. This includes a specially designed fuel rail and other components to suit the easy installation of additional injectors for high powrr VR38DETT engines. 

HKS doesn’t include injectors in this kit, but it’s been designed to accommodate individual preference for secondary injector sizes. HKS includes adaptors to suit the stock R35 GT-R injectors within the kit and these can be replaced to suit the chosen injector preference.

The prices for these top quality HKS components are:-

HKS Nissan R35 GT-R High-flow surge tank £3625.00 plus VAT.

HKS Nissan R35 GT-R Twin Injector Pro Kit £1545.00 plus VAT

HKS Nissan R35 GT-R High flow Surge Tank Full Kit £4250.00 plus VAT.

To buy this product now, please click on:-

http://www.tdi-plc.com/catalog/high-flow-surge-tank-p-19420.html

Arriving soon at TDi-plc (Torque Developments) the HKS DCT transmission Oil Cooler kit for the 2011 Nissan R35 GT-R with the GR6 semi-automatic gearbox. Designed for both road and track driving, the HKS DCT Oil Cooler is designed to protect the clutch and transmission, plus offers a firmer gearshift – realistically if you want to take your GT-R on trackdays, you’re going to need an HKS DCT cooler kit.

Now being pre-ordered at TDi-plc, HKS has designed the DCT Oil Cooler kit to overcome the problems when the stock Nissan R35 GT-R is driven in a spirited manner, particularly on track. If subjected to any prolonged driving where the front and rear axle speeds differ, the oil temperatures in the DCT transmission start to climb and the car defaults into 2wd mode when the temps approach 140 degrees. Indeed Nissan recommends that the oil should be replaced if the temperatures get this high.  

The HKS 2011 MY Nissan R35 GT-R GR6 DCT Oil Cooler kit incorporates the following features:-

• Maximised cooler due to relocated oil cooler core in front left hand of bumper
• Special FRP ducting for efficient core cooling
• 10mm Oil feed pipes for improved oil circulation
• Oil outlet attachments that are specially designed for the GR6 version of the Nissan R35 GT-R

During HKS testing at the Fuji Speedway circuit using a professional driver, the HKS DCT Oil Cooler kit enabled continuous lapping with a stable oil temperature of 127 degrees C (during testing with the stock Nissan DCT system the temperatures reached 135 degrees C and the test was stopped.) The HKS DCT Oil Cooler kit also reduced the water temperature by 5 degrees C.

Carrying part number 27002-AN 004, pre-orders are now being taken for the HKS DCT Oil Cooler for the 2011 MY Nissan R35 GT-R. Contact Torque Developments (TDi-plc) using freephone 0800 107 3250 or email sales@tdi-plc.com NOTE: This product has been developed for right hand drive 2011 MY Nissan R35 GT-R GR6 cars only.

TDi-plc (Torque Developments International) is pleased to announce the release of the latest 2011 generation of HKS EVC 6 electronic boost controller, which now incorporates a colour screen and numerous improvements over previous versions.

A ‘must have’ for any tuned turbocharged car, the 2011 HKS EVC 6 boost controller offers an enhanced user interface, a faster response time, improved data logging and superior reliability, combined with great value for money. Built around an new generation CPU called the HKS “EVC Hyper Engine,” control speed and reactivity are unmatched.

• TFT Full Color Monitor : Clearer and high level of visibility
• Monitor Navigate System : Simplified setting of data logging monitor
• Boost control stepper motor : Proven technology improvements to the valve unit
• Boost control valve size is reduced to 2/3 of the conventional valve
• Boost control setting range is from stock to 300kPa

See the new 2011 HKS EVC 6 Boost controller in action (note click on ‘CC’ for English subtitles) :- HKS EVC 6 Boost Controller 

Carrying part number 45003-AK010, the new 2011 HKS EVC6 boost controller is available now from principal HKS Europe distributor TDi-plc (Torque Developments) for £495.00 excluding VAT.

And there’s never been a better time to buy the HKS EVC6 – because for a limited time only while stocks last, the new EVC6 will be supplied with a set of blue HKS silicone vacuum hoses. Freephone Torque Developments plc on 0800 107 3250 or email sales@tdi-plc.com to take advantage of this offer.

A regular who is client running a very nice S14 Nissan 200SX has decided that it’s time for an engine rebuild, firstly to freshen up a tired engine and secondly to meet his objectives of 400hp at the hubs!

The SR20 engine is so called because “SR” is the basic engine designation, “20″ is the 2.0 litre displacement, “D” is for dual overhead camshafts, and “T” is for turbocharged. The 16 valve variable intake cam timing engine with Garrett T28 turbocharger responds very well to correct tuning methods.

We’ve removed the engine and transmission in order to strip the engine down for inspection and rebuild.

The engine gets wheeled through to the strip down area where the “dirty work” takes place.

The engine comes apart piece by piece for inspection.

Removing the  oil sump reveals evidence of the engines age!

We had previously installed HKS high performance camshafts which are still in good condition.

Here’s the cylinder block components following the stip down.

The HKS camshafts are removed from the cylinder head and are still in great shape, albeit quite dirty.

The original pistons, connecting rods and oil squirter jets are shown here. They’re not in too bad condition considering the the mileage and the use.

The cylinder head prior to removing the valves, springs and followers.

The SR20DET cylinder block is constrained by the strength of it’s cylinder walls, and it’s not unusual for them to crack at high cylinder pressures so the remedy for this is to install HKS high performance cylinder liners or Toda Racing high performance cylinder liners

The cylinder block has to be machined to accept the HKS or Toda Racing cylinder liners, then bored and honed to suit the pistons. Here, the block is completed and ready for use in this high power application.

We always measure each finished bore for size, ovality and taper to ensure that each cylinder has the correct clearance. Also specifications and toerances are recorded to ISO9001 standards.

The original crankshaft has been measured for wear, ovality and taper, and has been crack tested and micro-polished.

The standard Nissan pistons are quite weak and tend to fail in the ring land area when subjected to increased cylinder pressures. It’s always a good idea to uprate the pistons to heavy duty forgings, and we tend to prefer high quality brands such as HKS, Toda Racing or Wossner which will provide reliable performance with low noise level and low oil consumption.

The standadrd connecting rods are not robust enough to withstand the objectives so we use forged steel H section rods with ARP high tensile bolts from Cosworth, HKS or Toda Racing.

During an engine rebuild we normally have many of the components plated to get them looking like new again.

Heavy duty high tensile Cosworth head studs and Cosworth metal head gasket are used to withstand the higher cylinder pressures that the standard Nissan components are unable to cope with.

The pistons and rods are assembled and installed into the cylinder block.

Unfortunately the valve guides were badly worn. Nissan do not offer valve guides separately (only with a new head casting), so we used Toda Racing high performance valve guides.

After installation of the valve guides and machining of the valve seats, we gas flowed the intake and exhaust ports to improve the airflow efficiency which improves engine performance.

The valves were duly lapped in with course and fine paste, the cleaned and reassembled with the HKS valve springs

.

We’re using a Cosworth metal head gasket and Cosworth head stud kit.

We’ve fitted the ported cylinder head to the cylinder block, and are now fitting the HKS camshafts.

We’ve painted the valve cover the same colour as the car, which should look good.

The painted vale cover is now fitted to the engine.

Continuation of this build thread can be seen here

Highly tuned fast road and racing engines require upgraded and improved cooling systems to ensure maximum reliability. One of the most important – but frequently overlooked – components in the cooling system is the thermostat.

Hence why legendary high performance engine specialist Cosworth Engineering has launched a range of upgraded thermostats that open at a lower temperature than the original equipment equivalent and are now available from TDi-plc. Covering a wide range of tuned cars, including the Mitsubishi Lancer Evo, Subaru Impreza and Nissan 350Z, the Cosworth thermostats reduce the engine temperature by approximately 10 to 15ｰC compared with that of a standard thermostat. 

In addition, the Cosworth LowTemp Motorsport Thermostat improves coolant circulation through the engine by starting the process earlier than the original equipment thermostat.

Cosworth LowTemp Motorsport Thermostats are engineered with the optimum temperature range in mind for high performance racing use as it is very easy to over cool the engine by either removing the thermostat completely or using a thermostat that is not designed for the specific application. Additionally, over cooling can cause engine damage by preventing critical engine components from reaching their ideal operating temperature, altering the required clearances for safe operation. Another important feature of Cosworth LowTemp Thermostats compared to other brands is the ability to precisely control the flow of coolant when the valve opens. Inferior brands allow the coolant to surge thereby causing unstable temperatures and even temperature fluctuation that can cause severe engine damage and make it difficult to properly tune or calibrate the engine.

When combined with a correctly sized radiator and other high quality cooling system components, the Cosworth LowTemp Motorsport Thermostat will help to safely maximize engine performance by controlling the engine temperature at an optimum level. Available now from Torque Developments Plc, the range of fitments and prices are as follows:-

To purchase this product now, please click on the relevant vehicle specific link:-

http://www.tdi-plc.com/catalog/cosworth-thermostat-degrees-p-19152.html      Mitsubishi Evo 1-5

http://www.tdi-plc.com/catalog/cosworth-thermostat-engine-only-degrees-p-19156.html     Nissan 350Z

http://www.tdi-plc.com/catalog/cosworth-thermostat-only-degrees-p-19163.html        Honda K20 K24

http://www.tdi-plc.com/catalog/cosworth-thermostat-b16b18b20-only-degrees-p-19162.html   Honda B16 B18 B20

http://www.tdi-plc.com/catalog/cosworth-thermostat-only-degrees-p-19161.html   Toyota JZ

http://www.tdi-plc.com/catalog/cosworth-thermostat-b6bpnanb-degrees-p-19157.html   Mazda B6 BP

http://www.tdi-plc.com/catalog/cosworth-thermostat-ej20ej25-engine-degrees-p-19160.html   Subaru EJ20/EJ25

http://www.tdi-plc.com/catalog/cosworth-thermostat-degrees-p-19153.html   Mitsubishi Evo 6-9

http://www.tdi-plc.com/catalog/cosworth-thermostat-engine-only-degrees-p-19154.html   Nissan SR20

http://www.tdi-plc.com/catalog/cosworth-thermostat-engine-degrees-p-19158.html  Nissan RB/VG

Torque Developments plc announces a Wavetrac® limited slip differential for manual transmission versions of the popular Nissan 350 / 370Z coupe models. Designed to greatly improve traction by reducing wheelspin, the Wavetrac® differential for the 350Z / 370Z is a more advanced design than any other LSD on sale today, offering a superior driving experience for the discerning Nissan owner who enjoys frequent high performance driving or trackday use.

What makes the Wavetrac® Nissan 350 / 370Z differential different? To best understand how the Nissan 350 / 370Z Wavetrac® unit is truly different from the other gear differentials on the market, you first have to understand the primary problem that the Wavetrac® LSD solves – the ‘zero-load’ condition.

Zero axle-load is a condition that occurs during normal driving, but creates the most noticeable problems when driving in extreme driving conditions, such as trackdays, when one drive wheel is nearly or completely lifted (often in aggressive cornering). In these conditions, all other gear differentials will loose drive and behave like a factory ‘open’ diff’.

The Wavetrac® unit for the Nissan 350 / 370Z is designed specifically to overcome this problem, thanks to the innovative, patent-pending, Wavetrac® device located in the centre of the differential. During zero-load or near zero-load conditions the Wavetrac® device responds allowing the axles (and therefore each side gear in the diff) to start to turn at different speeds.

This speed differential causes the Wavetrac® device to step into action: Precisely engineered wave profiles are placed on one side gear and its mating preload hub. As the two side gears rotate relative to each other, each wave surface climbs the other, causing them to move apart. Very quickly, this creates enough internal load within the Wavetrac® to STOP the zero axle-load condition. The zero axle-load condition is halted, and the drive torque is applied to the wheel on the ground (the gripping wheel) keeping the power down and the car driving forward in a controllable manner.

The Wavetrac® is the only differential that can automatically add more load internally when it’s required. In the case where both wheels are on the ground during zero axle load, such as during a transition to deceleration, the Wavetrac® device is able to prepare the drivetrain for when the zero torque condition stops, eliminating the delay seen with ordinary gear diffs. What this means for you as a driver is that power is delivered to the gripping wheels for more time and in a more constant manner, making you faster and improving stability. The Wavetrac® truly is different – and its innovative features can make a real difference to your Nissan’s performance.

The Wavetrac® advantages – ensuring the best for your Nissan 350 / 370Z It’s not just the Wavetrac®’s performance that’s different, the Wavetrac®  Nissan 350 / 370Z is produced differently. Here’s the key Wavetrac® features:-

* Internally, the Wavetrac®’s gear tooth forms are optimised for strength and improved oil film retention over competitor designs

* The Wavetrac®  gear package is smaller, reducing overall mass, yet is more durable, since particular attention was paid to the tooth strength – perfect for high torque conditions

* Attention was also paid to the side gear/axle interface, putting as much material thickness as possible in this critical area – most important when power levels get high

* The Wavetrac® Nissan 350 / 370Z LSD uses high strength 9310 steel gears

* Wavetrac® uses case hardened, billet or forged steel housings for longevity

* ARP® fasteners are used throughout – we specify the best

Wavetrac®’s manufacturing tolerances and finish requirements meet or exceed all OEM standards. All Wavetrac® differentials are built in American plants operating to ISO9002 and TS16949 standards, with quality control systems that verify components at every step as they travel through the manufacturing process.

So if you appreciate the best in performance and quality limited slip differentials for your Nissan 350 / 370Z, you’ll appreciate the Wavetrac®.difference.

Carrying part number 44.309.181WK the Wavetrac® limited slip differential for manual transmission variants of the Nissan 350 / 370Z is available now from Torque Developments Plc, priced at £950.00 excluding VAT. To purchase this product now, please click on: http://www.tdi-plc.com/catalog/wavetrac-350z370z-p-19256.html