If you want the best combustion sealing solution on the market for your GTR, look no further. Our Extreme Performance fire ring kits have been developed from the ground up to overcome the problems usually found on other systems and provide the greatest sealing capacity.
What makes our fire rings so special?
SURFACE AREA AND CLAMP SPREAD
Our rings are the widest on the GTR market. Made from the same material the Top Fuel teams use, we have maximized the available sealing area through trial and error in order to provide a ring that provides the maximum seating surface in order to spread the clamping load over a wider area and prevent cylinder head warpage during torque.
GASKET THICKNESS
After many years of testing, we have come up with the optimum gasket thickness that works best in all-out engines. On a GTR engine, the head gasket thickness determines the center of the variable cam gears, which need to be precisely aligned. Our fire ring and gasket combination is 0.010" taller than the OEM gasket, which allows machine shops to mill the cylinder heads to perfection without fear of displacing the VCT alignment.
CLAMP SHARING
In a fire ring sealing system, the gasket is usually used only to seal the oil and water passages and 100% of the sealing is left to the rings. In our Extreme Performance system, we have carefully measured fire ring crush height so that the copper gasket shares about 15% of the clamp force. This clamp sharing ensures a complete gasket seal and uses the awesome properties of copper to provide a secondary barrier to combustion leakage under extreme boost.
COMPATIBLE WITH SLEEVES
Our fire rings have been carefully dimensioned to be compatible with both stock and sleeved blocks. On dry sleeves, our rings seat entirely over the steel. This provides a failsafe so that during clamping, all of the force is exerted onto the cylinder sleeve and not on the surrounding aluminum, pressing the sleeve into the block and preventing any "sleeve drops".
Kit includes:
Two copper gaskets
6 fire rings
Instructions for machining groove
We recommend CNC machining of the fire ring grooves in the engine block due to the extremely tight tolerances of our gaskets. We can also provide CNC machining of the engine block as a service. While these can be installed on the cylinder head, we recommend engine block installation so that whenever the cylinder heads need to be serviced, they can be surfaced without worry of disturbing the seating groove. Seating the rings in the block also ensures correct gasket alignment and prevents the rings from dropping during installation.
If you want the best combustion sealing solution on the market for your street GTR R35, look no further. Our Ultra Performance fire ring kits have been developed from the ground up to overcome the problems usually found on other systems and provide the greatest sealing capacity. This kit is suited for street engines that will make under 1800HP. The composite gasket material ensures a perfect seal against coolant and oil and we have tested it to well over 2000HP. However if your engine exceeds our recommended rating, you can also look at our Extreme Performance kit.
What makes our fire rings so special?
SURFACE AREA AND CLAMP SPREAD
Our rings are the widest on the GTR market. Made from the same material the Top Fuel teams use, we have maximized the available sealing area through trial and error in order to provide a ring that provides the maximum seating surface in order to spread the clamping load over a wider area and prevent cylinder head warpage during torque.
GASKET THICKNESS
After many years of testing, we have come up with the optimum gasket thickness that works best in all-out engines. On a GTR engine, the head gasket thickness determines the center of the variable cam gears, which need to be precisely aligned. Our fire ring and gasket combination is 0.010" taller than the OEM gasket, which allows machine shops to mill the cylinder heads to perfection without fear of displacing the VCT alignment.
CLAMP SHARING
In a fire ring sealing system, the gasket is usually used only to seal the oil and water passages and 100% of the sealing is left to the rings. In our Ultra Performance system, we have carefully measured fire ring crush height so that the copper gasket shares about 15% of the clamp force. This clamp sharing ensures a complete gasket seal against oil and coolant leakages.
COMPATIBLE WITH SLEEVES
Our fire rings have been carefully dimensioned to be compatible with both stock and sleeved blocks. On dry sleeves, our rings seat entirely over the steel. This provides a failsafe so that during clamping, all of the force is exerted onto the cylinder sleeve and not on the surrounding aluminum, pressing the sleeve into the block and preventing any "sleeve drops".
Kit includes:
Two head gaskets
6 fire rings
Instructions for machining groove
We recommend CNC machining of the fire ring grooves in the engine block due to the extremely tight tolerances of our gaskets. We can also provide CNC machining of the engine block as a service. While these can be installed on the cylinder head, we recommend engine block installation so that whenever the cylinder heads need to be serviced, they can be surfaced without worry of disturbing the seating groove. Seating the rings in the block also ensures correct gasket alignment and prevents the rings from dropping during installation.
This adapter connector allows turning on the ignition system on our Yamaha harnesses when performing firmware upgrades, datalogging or any operation that requires the system to be powered without the engine turning.
Also allows connecting to the ECU via Wi-Fi during tuning sessions without the need for a USB cable.
Fits:
Yamaha GP1800 series main harness
Yamaha FX series main harness
Yamaha FZR series main harness
he New WB-O2 Nano O2 Conditioner is a wideband O2 sensor controller compatible with a wide range of O2 sensor options. It's compatible with 5 different wideband O2 sensors: Bosch 4.2, Bosch 4.9, Bosch 5.2, NTK ZFAS, and NTK Wideband O2 Sensor.
Suits: Racing application where advanced race features, data logging and power management control is required.
Includes: NEXUS R5 VCU, SurLok connectors (Red and Black), Wi-Fi antenna, mounting bolts, USB-C Cable, USB-C dust cap, USB drive with NSP Software. Plug and pin set: AMP 26 pin key 1 and 3, 34 pin key 1 and 2, DTP-4.
Plug and Pin Set - Suits Nexus R5
use in converting an existing loom to suit NEXUS R5 applications.
VCU OVERVIEW
NEXUS R5 is the new Haltech flagship product combining the functionality of a power distribution module, a data logger, a dual channel wideband controller and a state-of-the art engine management system in one powerful device we call a VCU (Vehicle Control Unit).
4 x 25A (continuous) push-pull PWM capable (5 kHz) outputs (for power to injectors / coils, transbrake, thermofan, fuel pump)
12 x 8A (continuous) high side outputs (low speed PWM, 200 Hz) outputs (power to sensors, NOS solenoids, etc)
18 x peak/hold injector drivers (can be used as low side drive outputs)
12 x low current ignition outputs (can be used as low side drive outputs)
8 x low side drive outputs, PWM capable (DPOs)
4 x push-pull / h-bridge outputs (8A, PWM capable), eg for electronic throttle
23 x 0-5V analog inputs with redunancy for electronic throttle and switchable 5V pullup
Trigger and home inputs with differential inputs, adjustable thresholds and glitch filters
10 x synchronous pulsed inputs, zero crossing or adjustable thresholds - cam sensor inputs, frequency inputs or 0-5V analog inputs
2 x onboard wideband controllers, supporting NTK and LSU4.9
3 x CAN ports with switchable termination
Outputs: Up to 18 injector and 12 ignition
Suits: Racing application where advanced race features, data logging and power management control is required.
Includes: NEXUS R5 VCU, SurLok connectors (Red and Black), Wi-Fi antenna, mounting bolts, USB-C Cable, USB-C dust cap, USB drive with NSP Software.
VCU OVERVIEW
NEXUS R5 is the new Haltech flagship product combining the functionality of a power distribution module, a data logger, a dual channel wideband controller and a state-of-the art engine management system in one powerful device we call a VCU (Vehicle Control Unit).
4 x 25A (continuous) push-pull PWM capable (5 kHz) outputs (for power to injectors / coils, transbrake, thermofan, fuel pump)
12 x 8A (continuous) high side outputs (low speed PWM, 200 Hz) outputs (power to sensors, NOS solenoids, etc)
18 x peak/hold injector drivers (can be used as low side drive outputs)
12 x low current ignition outputs (can be used as low side drive outputs)
8 x low side drive outputs, PWM capable (DPOs)
4 x push-pull / h-bridge outputs (8A, PWM capable), eg for electronic throttle
23 x 0-5V analog inputs with redunancy for electronic throttle and switchable 5V pullup
Trigger and home inputs with differential inputs, adjustable thresholds and glitch filters
10 x synchronous pulsed inputs, zero crossing or adjustable thresholds - cam sensor inputs, frequency inputs or 0-5V analog inputs
2 x onboard wideband controllers, supporting NTK and LSU4.9
3 x CAN ports with switchable termination
Suits: Engines with up to 4 cylinders or up to 2 rotors. Racing applications where advanced race features and data logging is required.
Includes: Nexus S2 ECU, 4 x mounting bolts, USB-C Cable, USB-C dust cap, Quick Start Guide, Wiring Diagram.
ECU OVERVIEW
Haltech's Nexus S2 is the successor to the acclaimed Elite 1500, offering a serious upgrade in performance and functionality. The S2 combines all the classic functionality of the Elite 1500 with new features and the superior processing power of the successful Nexus platform.
4 x peak/hold injector drivers (can be used as low side drive outputs)
4 x low current ignition outputs (can be used as low side drive outputs)
6 x low side drive outputs, PWM capable (DPOs)
4 x push-pull / half bridge outputs (8A, PWM capable), eg for electronic throttle
1 x ECR output
11 x 0-5V analog inputs with redundancy for electronic throttle and switchable 5V pullup
Trigger and home inputs with differential inputs, adjustable thresholds and glitch filters
6 x synchronous pulsed inputs, zero crossing or adjustable thresholds - cam sensor inputs, frequency inputs or 0-5V analog inputs
1 x on-board wideband controller, supporting NTK and LSU4.9
1 x on-board 4 bar MAP sensor
2 x CAN ports with switchable termination
Connects to our main harness on the Yamaha GP1800 and FX series and enables the use of a nitrous solenoid and also provides a connection for a nitrous pressure sensor to the ECU.
Suits: Haltech Nexus or Elite Series ECU's
Includes: 1 x Haltech PD16, 1 x SurLok 120A Connector Red, 1 x USB Key, 1 x USB-C Cable, 1 x USB-C Dust Cap, 1 x Haltech Fabric Keytag, 1 x Quick Start Guide Booklet, Mounting Hardware - (2 x M5 Bolts and Nuts)
Notes: The NEXUS PD16 is Haltech's new power distribution product. Boasting new, innovative yet user-friendly technology, it sets a new market standard for power distribution systems. Designed to integrate seemlessly into your existing Haltech Elite or Nexus engine management system, the PD16 delivers safe, dependable power delivery to your vehicle.
FEATURES
10 x High Side Outputs
2 x Half Bridge Outputs
4 x 25A High Current Outputs
8 x Inputs + Dedicated Ignition Switch Input
Power for Ignition Switch
Integrated into Haltech CAN Bus Network
5V Sensor Supply / Sensor Ground
120A SurLok Connector
Suits: Haltech Nexus or Elite Series ECU's
Includes: 1 x Haltech PD16, 1 x SurLok 120A Connector Red, 1 x USB Key, 1 x USB-C Cable, 1 x USB-C Dust Cap, 1 x Haltech Fabric Keytag, 1 x Quick Start Guide Booklet, Mounting Hardware - (2 x M5 Bolts and Nuts) and Plug and Pin Set to suit
Notes: The NEXUS PD16 is Haltech's new power distribution product. Boasting new, innovative yet user-friendly technology, it sets a new market standard for power distribution systems. Designed to integrate seemlessly into your existing Haltech Elite or Nexus engine management system, the PD16 delivers safe, dependable power delivery to your vehicle.
FEATURES
10 x High Side Outputs
2 x Half Bridge Outputs
4 x 25A High Current Outputs
8 x Inputs + Dedicated Ignition Switch Input
Power for Ignition Switch
Integrated into Haltech CAN Bus Network
5V Sensor Supply / Sensor Ground
120A SurLok Connector
The PDM1 is a powerful solid state relay with built-in overcurrent protection in a small, completely sealed enclosure.
Manufactured in the USA and programmed to support continuous 20-amps, it is an intelligent power distribution module that eliminates the need for fuses as is the case with conventional normal and solid state relays. A built-in RGB LED light shows operating conditions and will change colors during overcurrent conditions and will also let the user know when the unit is automatically retrying to activate the circuit after a protection shutdown.
The CNC aluminum case is actually smaller that a standard ISO relay and can be mounted in any position. The electronics are fully enclosed in high grade epoxy resin making the entire unit completely waterproof.
Internal pullup resistors on the inputs make this unit ideal for controlling nitrous solenoids since it will not "auto-fire" during initial ignition switch Key-On, eliminating the need for DPDT switches and simplifying your nitrous wiring. And it can also be pulse-controlled (PWM) with any square-wave signal up to 1000 times per second.
Switching from a conventional relay to a PDM1 is extremely easy and only requires an additional ground signal (low current) wire to be connected.
The PDM1 also features an internal microprocessor that monitors current spikes and prevents false overcurrent protection on inductive loads like fans and fuel pumps. By continuously monitoring current, the PDM1 will allow a brief spike that is normal on all inductive devices before entering protection mode. It also features "flyback" protection against negative voltage generated by fans and other inductive motors.
Detailed wiring and PWM control instructions are included
Our GTR R35 harness combines the fitment of a stock OEM harness with our race features we are able to wire directly to the Motec M150 and offer in one compact package all the OEM features plus:- Dual map sensors- Dual boost control- Dual inlet ait temperature sensors- Exhaust backpressure on both banks- Dual boost sensors- Flex fuel direct connection- Fuel pressure- Crankcase pressure- 2 Nitrous stages using all OEM fuses and relays- Nitrous pressure- Wheel speed easy inputs for vehicles with ABS delete- Motec dash ready- EGT ready- No throttle body extensions required- 12 Injectors ready- Additional rotary switch- Built-in current sensing for direct control of transfer solenoid and more!
This is a complete new harness however, due to the fact that some connectors and grommets are made solely for Nissan, we require a core harness. If a core cannot be provided, we will supply one at extra cost. While this is a plug and play item, expert installation is required since it will require changing Motec firmware wiring assignments to match the supplied base map as well as possible retuning due to additional sensors.
Harness is provided with a complete full color PDF diagram of all wiring connections and a base map with firmware of choice with all connections populated.
Does not include Knock sensor harness but connects directly to OEM
Does not include primary injector harness but connects directly to OEM
12-Injector harness sold separate. Engine harness has connector ready with secondary injectors wired behind intake manifold, not routing through firewall needed
Motec ECU sold separately
This is a custom-made item. Turn-around time is 2-3 weeks. We do not offer "mil-spec" finishing. All of our harnesses are finished to OEM specs using OEM routing techniques and the highest quality OEM covering materials. We guarantee all of our products are free of manufacturing defects and have tested them for years.
IMPORTANT EMISSIONS NOTICE:
In many states, it is unlawful to tamper with your vehicle's emissions equipment. Karel Tuning LLC products are designed and sold for sanctioned off-road/competition non-emissions controlled vehicles only and may never be used on a public road or highway. Using Karel Tuning LLC products for street/road use on public roads or highways is prohibited by law unless a specific regulatory exemption exists. It is the responsibility of the installer and/or user of this product to ensure compliance with all applicable local and federal laws and regulations. Please check with your local vehicle authority before purchasing, using or installing any Karel Tuning LLC product.
This connector fits the older style Yamaha Waverunners Ride motor on the engine harness side.
A complete kit contains
1 connector N13
16 seals A50
16 contacts + 1 extra B35
12 cavity plugs A52
The absolute best SeaDoo plug and play fuel pump controller on the market. Completely waterproof, will not void the warranty and does not rely on fuses. Automatic overcurrent protection and channel retry means it will never leave you stranded in the middle of the ocean in case of an overheating pump.
Made in the USA with all OEM connectors and completely sealed in a CNC aluminum case. Can be mounted in any position and will drive any electrical brushed fuel pump on the market.
Smaller that any conventional relay and has a built-in RGB led for easy visual inspection. Comes with instructions and can be mounted in any position.
Download documentation
This connector is intended to keep the harness waterproof in applications that use the OEM Yamaha CAN bus based dash for display. Since the OEM dash connects directly to the buzzer, the connector on the harness needs a sealing plug to remain waterproof.
See main harness instructions for how to use this connector.
Fits:
Yamaha GP1800 series main harness
Yamaha FX series main harness
Yamaha FZR series main harness
This connector is intended to keep the harness waterproof in applications that do not have a flex fuel sensor installed
Fits:
Yamaha GP1800 series main harness
Yamaha FX series main harness
Yamaha FZR series main harness
This connector is intended to keep the harness waterproof in applications that do not have a Haltech dash installed
Fits:
Yamaha GP1800 series main harness
Yamaha FX series main harness
Yamaha FZR series main harness
This connector is intended to keep the harness waterproof in applications that do not have a knock sensor installed
Fits:
Yamaha GP1800 series main harness
Yamaha FX series main harness
Yamaha FZR series main harness
This connector is intended to keep the harness waterproof in applications that do not have an oil pressure sensor installed
Fits:
Yamaha GP1800 series main harness
Yamaha FX series main harness
Yamaha FZR series main harness
