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All technical documents contained here are the sole property and copyright of Jim Wolf Technology, Inc. They are expressly and solely provided for use by JWT customers who have been specifically advised by JWT to access this material as part of an installation or tech support issue with thier JWT products. This material is incomplete and may contain errors or out of date information and should not be used without first contacting JWT's tech support department.

350Z/G35 TT KIT
FUEL MANAGMENT UNIT (FMU) MANUAL FOR FUEL PUMP AND FMU INSTALL ON JWT TWIN TURBO KITS
FMU FUEL PRES. VS PULSE WIDTH RELATION

Spreadsheet showing the injector pulse width vs fuel pressure for the JWT TT FMU.

JWT G35 TWIN TURBO KIT INSTALLATION MANUAL

JWT G35 TWIN TURBO KIT INSTALLATION MANUAL (5 MEG FILE)

350Z JWT TWIN TURBO INSTALLATION MANUAL

JWT 350Z TT INSTALLATION MANUAL (5MEG FILE)

BOOSTING ACCESSORIES
TURBO STARTER KIT FOR SR20 TURBO STARTER KIT FOR SR20
Simple Tee Bleed Boost Control

A SIMPLE TEE BLEED BOOST CONTROL TO RAISE BOOST A FEW POUNDS.

GARRETT TURBO CATALOGUE

GARRETT TURBO CAT. JWT IS AN AUTHORIZED GARRETT ENGINEERING HOUSE.

 

Z32 BOOST SOLENOID BYPASS SWITCH

How to install a manual high/low boost switch on a Z32

Z32 JWT BB530 TURBOCHARGER UPGRADE INSTALLATION

Z32 JWT BB530 TURBOCHARGER UPGRADE INSTALLATION

SPORT 700BB TURBO UPGRADE INSTALL GUIDE SPORT 700BB TURBO UPGRADE INSTALL GUIDE FOR Z32TT
JWT MANUAL BOOST CONTROLLER INSTRUCTIONS JWT MANUAL BOOST CONTROLLER INSTRUCTIONS
Z31 INTERCOOLER PIPE LAYOUT Z31 INTERCOOLER PIPE LAYOUT
INSTALLING Z32TT BOOST JETS INCLUDED WITH JWT Z32 TT ECU UPGRADE INSTALLING Z32TT BOOST JETS INCLUDED WITH JWT Z32 TT ECU UPGRADE
Z32 SPORT 600 & 650 TURBOCHARGER UPGRADE INSTALLATION

Z32 SPORT 600 & 650 TURBOCHARGER UPGRADE INSTALLATION

CAMSHAFT INSTALLATION
CAMSHAFT INSTALLATION INSTRUCTIONS FOR SR20 CAMSHAFT INSTALLATION INSTRUCTIONS FOR SR20
JWT ADJUSTABLE CAM SPROCKETS SR20 INSTRUCTIONS

JWT ADJUSTABLE CAM SPROCKETS SR20 INSTRUCTIONS

CAM INSTALL INSTRUCTIONS FOR GA16DE CAM INSTALL INSTRUCTIONS FOR GA16DE
CAM INSTALLATION INSTRUCTIONS FOR KA24DE CAM INSTALLATION INSTRUCTIONS FOR KA24DE
VK56 CAMSHAFT INSTALL ADDENDUM

VK56 CAMSHAFT INSTALLATION ADDENDUM TO FACTORY MANUAL.

CAMSHAFT INSTALLATION FOR QR25DE

CAMSHAFT INSTALLATION FOR QR25DE

ADJUSTABLE CAM SPROCKETS KA24DE INSTRUCTIONS ADJUSTABLE CAM SPROCKETS KA24DE INSTRUCTIONS
VQ35 CAM LASH WORKSHEET AND FOLLOWER PART NUMBERS

This worksheet can be used to calculate which bucket followers you may need during a cam change or head modification. Also included is a fairly complete survey of all Nissan & Infiniti follower part numbers that will fit most VQ, VK, & QR engines. It is strongly advised to choose followers with a DLC (Diamond-like carbon) wear surface in all performance applications. DLC followers are denoted with an * and are available in all thickness.

VQ35 ADJUSTABLE EXH. SPROCKETS INSTALLATION

JWT adjustable VQ exhaust sprockets can be used by engine builders to acheive precise exhaust cam timing or eliminate exhaust cam phaser if needed. These instructions show only a basic understanding of how to position them, it is up to the engine builder to position them correctly for the intended end result.

VQ35 ADJUSTABLE EXHAUST SPROCKET FOR REVUP Here are the instructions many engine builders have asked us for, on how to use the JWT VQ35DE (AVQ35-EGEAR) adjustable exhaust cam sprockets to eliminate the VQ35 Rev-up exhaust cam phasing system.
CAM QR25DE C1 CYL. HEAD CLEARANCING DETAIL

Clearancing the cylinder head for clearance of the #1 intake lobe is required for JWT C1 Cams on QR25DE engines. Here is how to do this if the head is assembled.

CAMSHAFTS
JWT IN-CHASSIS VALVE SPRING COMPRESSOR INST. IN-CHASSIS VALVE SPRING COMPRESSOR for VQ, KAD, QR. & VK56 INST.
THE DIRTY LITTLE SECRETS OF CAM DESIGN

What a lot of very good engine builders unfortunetly  learn the hard way. A must read for all serious engine builders!

VQ35DE Cam Timing Templates

If you have Codes P0021 or P0011 after assembling your engine, you need to recheck the cam timing. This template set must be printed without any rescaling, check your print driver and Acrobat for any rescaling options and turn them off. Cut out the templates and place them on the intake gears as instructed.

400+WHP VK56 OFFROAD CAR WITH JWT ECU AND C8 CAMS ON DYNO

VIDEO: This is the 1st dyno run on a stock internals VK56 with JWT C8 Cams and ECU. 400+ WHP on 91octane. Very fun car!

JWT SR20DE CAM SPECS

JWT SR20 Camshaft Spec. includes FWD, RWD, hydlaulic & mechanical cams.

VQ30 vs VQ35 CAM TIMING VARIATIONS

This worksheet details some of the variables to be aware of when combining VQ30 and VQ35 engine parts for various reasons

JWT QR25DE CAM SPECS

QR25DE CAM SPEC CHART

JWT VK56 CAM SPEC.

JWT VK56 Camshaft profiles for both intake cam phaser (2007+) and non-phaser (pre-'07) engines.

JWT VQ30DE CAM SPECS JWT VQ30DE CAM SPECS
VQ35 HEAD CLEARANCING FOR C9 CAMS

VQ Heads must be clearanced to allow the cam lobes to clear when running the high lift JWT C9, C10, C11, C12 Cams

VG30DE(TT) CAM SPECS

VG30DE AND VG30DETT JWT CAMSHAFT SPEC. CARDS

VG30DE(TT) VALVE SPRING COMPRESSOR TOOL - INSTRUCTIONS

VG30DE(TT) VALVE SPRING COMPRESSOR TOOL - INSTRUCTIONS

VQ35HR MODIFY INT CAM BOLT HOLE FOR LONG BOLT

For VQ35HR race engines running higher than original rev limiters, it is highly recommended to use the longer 75mm sprocket bolt 13012-9N00A. This modification eliminates the torsional shear forces on the front journel by locating the bolt threads aft of the oil groove. This was also a production update in 2010. If your bolt has a "N" on the head it already has the long bolt update.

JWT VQ35 CAM SPECS

JWT VQ CAM SPECS CARDS

CLUTCH / FLYWHEEL / DRIVE LINE
6-spd Adapter Kit Inst 6-spd Adapter kit instructions. To use a 350Z,370Z,G35 six speed transmission on other Nissan engines using an automatic bell housing.
QR25 JWT FLYWHEEL INSTALL INSTRUCTIONS

JWT QR25DE FLYWHEEL INSTALL INSTRUCTIONS

VQ35DE JWT FLYWHEEL INSTALLATION

JWT 350Z, G35, 02+MAXIMA, ALTIMA FLYWHEEL INSTALL

350Z - G35 FLYWHEEL CAS TO TDC CHECK

350Z - G35 CONFIRMING CORRECT FLYWHEEL CLOCKING TO CRANKSHAFT

MEASURING THE STROKE OF A ZOR G CONCENTRIC SLAVE

To determine if a lack of clutch disengagment is caused by the hydraulic system (pedal, master & conentric slave) or a problem with the clutch itself, you must first determine if the release bearing has enough movement to disengage the clutch as expected.

350Z JWT CLUTCH PEDAL ADJ SPEC 350Z JWT CLUTCH PEDAL ADJ SPEC
M6 TRANSMISSION INPUT BEARING

Nissan M6 6-speed transmissions used on 350Z, 370Z, G35 & G37 look similar externally but have 3 diameter changes in the input bearing, making cases non-interchangable between the 3 types (CD0, CD5 & CD8).

MEASURING YOUR FLYWHEEL HEAT SHIELD FOR REPLACEMENT

To identify a replacement heat shield for older JWT Flywheels, use this dimension chart for the critical dimensions. Try to be as accurate as possible.

350Z & G35 RELEASE ARM & PIVOT BALL SPECS

If you are installing an aftermarket release arm Pin-Ball (pivot ball) with your new clutch, be sure to use the correct part for your car. Installing a pin-ball of the wrong height can cause damage to the clutch. This sheet shows the production dates, lengths and Nissan part numbers along with associated parts to confirm the correct parts are being used.

ECU AND CONTROL SYSTEMS
FUEL RAIL INSTALLATION FOR SR20/KA24 TO MSD TYPE INJECTORS FUEL RAIL INSTALLATION FOR SR20/KA24 TO MSD TYPE INJECTORS
CONFIGURE CONSULT FOR TESTING

Consult data logging format for test data being reviewed by JWT.

ECU INSTALLATION AND LOCATION GUIDE ECU INSTALLATION AND LOCATION GUIDE
280 and Z31 550HP ECU /injector/ MAF upgrade inst.

280Z and Z31 550HP ECU /injector/ MAF upgrade inst.
Instructions for upgrading to the JWT 550HP+ control system.

CHIP INSTALLATION EPROM  INSTALLATION INTO A JWT ECU
350Z / G35 DECEL STABILITY FIX 350Z / G35 DECEL STABILITY FIX FOR MODIFIED CARS WHEN IDLE SPEED CANNOT BE ADJUSTED FROM CONSULT TO STABILIZE IDLE AFTER RAPID THROTTLE DROP. 
HOW TO COMBINE 2 CONCURRENT LOGS WITH DIFFERENT TIME BASES IN EXCEL

When more than 1 data logger is recording at differant sample rates, time syncing the data can be done in Excel this way.

FUEL INJECTOR LATENCY EXPLAINED

All fuel injectors take a certain amount of time to open and close. The opening and closing time of an injector must be known before a tuner can properly program the ECU. Using a Nissan detonation sensor mounted to an injector on a flow test bench, and a dual channel scope with channel 1 monitoring the injector current and channel 2 monitoring the detonation sensor, you can be easily determined.the injector latency or invalid time.

350Z /G35 STOCK FUEL RAIL MODE FOR HIGH FLOW

The stock fuel rail is capable of very high flow (600HP+) in either dead head or return setups, provided the restrictors are opened to 6mm.

A CAUTION ON DRILLED FUEL INJECTOR

Drilling out stock injectors to cause a higher flow rate is a great idea in theory, but when done poorly, can cause the lose of an expensive performance engine. We do not recommend these over new manufactured injectors, based on the large number of drilled injectors we receive for testing that are not even close to the precision required in an expensive performance engine. We have included here a few examples of injectors that had been drilled and sold to customers that had sent them in for flow testing. View the samples and if you still choose to go this route, do your own visual inspection and flow test before betting your engine! The state of this process is evolving and we will continue to revisit the subject, if thing improve.

300ZX EARLY STYLE FUEL INJECTOR FAILURE

300ZX TT 90-94 and non-turbo 90-93 fuel injectors have a high failure rate as explained here.

ECU BUG IN 350Z / G35 DURING HIGH BOOST ECU bug in 350Z / G35 if injector Pw => 25.5ms. at 4700-4750RPM.
NISSAN ECU IDENTIFICATION CHART NISSAN ECU IDENTIFICATION CHART
USING A TEST BOOST GAGE ON A Z32 TO DETERMINE MAXIMUM BOOST USING A TEST BOOST GAGE ON A Z32 TO DETERMINE MAXIMUM BOOST
ELECTRICAL AND WIRING
WIRING A FORD MAF SENSOR INTO NISSAN VEHICLES

WIRING A FORD 93 COBRA MUSTANG OR 2001+ LIGHTNING MAF SENSOR INTO NISSAN VEHICLES

WIRING A 90-96 300ZX MASS AIR SENSOR INTO OTHER NISSAN CONTROL SYSTEMS

WIRING A 90-96 300ZX MASS AIR SENSOR INTO OTHER NISSAN CONTROL SYSTEMS.

ADDING MSD IGNITION TO INTERNAL COIL TYPE SR20 OR 240SX ADDING MSD IGNITION TO INTERNAL COIL TYPE SR20 OR 240SX
WIRING TO USE A 95-96 SENTRA GA16 ECU IN A 97-98 SENTRA GA16 WIRING TO USE A 95-96 SENTRA GA16 ECU IN A 97-98 SENTRA GA16
WIRING TO USE A 95-96 240SX ECU IN A 97+ 240SX WIRING TO USE A 95-96 240SX ECU IN A 97+ 240SX
WIRING TO USE A 95-96 ALTIMA ECU IN A 97-99 ALTIMA WIRING TO USE A 95-96 ALTIMA ECU IN A 97-99 ALTIMA
CONVERT A SR20 OR KA24DE CAR WITH AN INTERNAL COIL DISTRIBUTOR TO AN EXTERNAL COIL TYPE DISTRIBUTOR CONVERT AN SR20 OR KA24DE CAR WITH AN INTERNAL COIL DISTRIBUTOR TO AN EXTERNAL COIL TYPE DISTRIBUTOR
WIRING N14 SR18DE ECU WIRE DIAGRAM WIRING N14 SR18DE ECU WIRE DIAGRAM
WIRING A 98 SENTRA SR20 TO USE A 95-97 SENTRA ECU WIRING A 98 SENTRA SR20 TO USE A 95-97 SENTRA ECU
S14 ECU WIRING EUROPE SPEC SR20DET S14 ECU WIRING EUROPE SPEC SR20DET (in English)
DET N14 PULSAR GTIR WIRING DIAGRAM DET N14 PULSAR GTIR WIRING DIAGRAM
DET S13 SILVIA WIRING DIAGRAM DET S13 SILVIA WIRING DIAGRAM
350Z ECU WIRE DIAGRAM 2003-04

350Z ECU WIRING DIAGRAM FOR 2003-04

MODIFY INTERNAL COIL DISTRIBUTORS ON SR20DE OR KA24DE TO TRIGGER MSD IGNITION MODIFY  INTERNAL COIL DISTRIBUTORS ON SR20DE OR KA24DE TO TRIGGER MSD IGNITION
DET S14 SILVIA WIRE DIAGRAM DET S14 SILVIA WIRE DIAGRAM
DET U12 BLUEBIRD WIRING DIAGRAM DET U12 BLUEBIRD WIRING DIAGRAM
WIRING FOR VQ30DE ENGINE SWAP FOR BUGGIES AND RACE CARS USING A 96 MAXIMA WIRING HARNESS WIRING FOR VQ30DE ENGINE SWAP FOR BUGGIES AND RACE CARS USING A 96 MAXIMA WIRING HARNESS
ENGINES
QR BALANCE SHAFT REMOVAL KIT INSTALLATION QR BALANCE SHAFT REMOVAL KIT INSTALLATION
VQ35 OIL PAN SPACER KIT

350Z / G35 (AND OTHER VQ35DE ENGINES) OIL PAN SPACER KIT TO INCREASE OIL CAPACITY TO 6 QT

VQ37 CAM ANGLE ENCODER FAILURE DTC P0340 P0345

If you have a VQ37 that has a coded with DTC P0340 or P0345, it is possable that the encoder ring on the cam gear slipped. This is hard to discover as there is no specs for this in the factory manual.

2007+ 350Z & 370Z Oil Pan Spacer Manual 350ZHR & 370Z JWT Oil Pan Spacer Kit Manual
VG30DE(TT) CAS DRIVE COUPLING DAMAGE DUE TO MISALIGNMENT

NISSAN VG30DE(TT) CAM ANGLE SENSOR COUPLING MISALIGNMENT

CAN CAUSE UNEXPLAINED DETONATION IN HIGH PERFORMANCE ENGINES.

 

VQ35DE DET. SENSOR RESPONSE FREQ.

Sensors and devices designed to sense detonation need to be calibrated around the natural frequency of the engine assembly being sensed. This is an FFT of the dominate frequencies for a VQ35DE. Depending on external noise, one may be cleaner than the others, but this is the starting point.

VQ35-37 COOLING, HEAD GASKETS & HEAD BOLTS

VQ35 / VQ37 coolant flow and head gaskets had not been optimized until the VQ35HR in 2007. The 3rd gen. HR head gaskets & head bolts are an excellent choice for boosted and race VQ35DE engines. Flash boiling in head on boost and head lifting due to poor circulation paths in 1st and 2nd gen gaskets are signifigantly improved with the 3rd gen HR gasket design. 3rd gen. gaskets also incorperate a .1mm thick fire ring preload shim in between the gasket plys, for additional combustion sealing. Also recommended on sleeved engines with flushed (not .002-.003" proud) sleeves to avoid lose of combustion seal as sleeves settle. Use HR high tension TTY bolts in DE builds to increase clamping force and avoid cylinder destortion and uneven clamp loads associated with some non-TTY stud options.

SR20 BLOCK AND PISTON SPEC SR20 BLOCK AND PISTON SPEC
SR20 BLOCK AND PISTON SPEC SR20 BLOCK AND PISTON SPEC
SR MOTOR MOUNT INST.

JWT  MSER1-10000 MOTOR MOUNT KIT 91-99 5SPD SR FWD

SR20DET GTIR MAIN AND ROD BEARING SELECTION GUIDE SR20DET GTIR MAIN AND ROD BEARING SELECTION GUIDE
JWT PISTON / BORE MACHINING GUIDE

GUIDE FOR BORING CYLINDERS TO FIT SPECIFIC JWT PISTONS.

GENERAL INFO
NISSAN & INFINITI MODEL/CHASSIS CODES (U.S. MARKET)

QUICK LOOKUP CHART SORTED BY MODEL VS. CHASSIS AND CHASSIS VS MODEL

NITROUS OXIDE SYSTEMS
WIRING A Z31 TPS SENSOR TO OPERATE A JWT N2O SYSTEM WHEN USED WITH THE 450 HP ECU UPGRADE WIRING A Z31 TPS SENSOR TO OPERATE A JWT N2O SYSTEM WHEN USED WITH THE 450 HP ECU UPGRADE
N20 4 CYL AND OTHER SINGLE FOGGER INSTRUCTIONS N20 4 CYL AND OTHER SINGLE FOGGER INSTRUCTIONS
N20 Z32TT INSTRUCTIONS N20 Z32TT INSTRUCTIONS
N2O 90+ 300ZX NON-TURBO INSTRUCTIONS N2O 90+ 300ZX NON-TURBO INSTRUCTIONS
POP-CHARGER AIR FILTERS
POP CHARGER INSTRUCTION EXCEPT Z-CARS POP CHARGER INSTRUCTION EXCEPT Z AND ZX
POPCHARGER 90-96 300 ZX INSTRUCTIONS POPCHARGER 90-96 300 ZX INSTRUCTIONS
POP-CHARGER 350Z INSTALLATION POP-CHARGER 350Z INSTALLATION
300ZX TT DUAL POP-CHARGER INSTALLATION 300ZX TT DUAL POP-CHARGER INSTALLATION
POP-CHARGER CALIFORNIA AIR RESOURCE BOARD EXECUTIVE ORDER

POP-CHARGER CALIFORNIA AIR RESOURCE BOARD EXECUTIVE ORDER

EXAMPLE OF HOW TO BUILD A COLD AIR BOX EXAMPLE OF HOW TO BUILD A COLD AIR BOX AROUND A POP-CHARGER 
POP-CHARGER G35 INSTALLATION

POP-CHARGER G35 INSTALLATION INSTRUCTIONS

POP-CHARGER CARB E.O. FOR 1989 TO 2005 POP-CHARGER CARB E.O. FOR 1989 TO 2005
350Z 2007+ POP-CHARGER DUAL INTAKE INSTALL

INSTALLATION MANUAL FOR THE 2007+ 350Z POP-CHARGER DUAL INTAKE

DUAL POP-CHARGER G37 / 07 G35 SEDAN INSTALL

G37 & 07+ G35(HR) Dual Pop-Charger Intake Syst. installation instructions.

CALIFORNIA EO D-244-7 FOR POP-CHARGERS TO 2008

Pop-Charger CARB EO D-244-7 replaces all older EOs upto model year 2008 and some 2009

370Z DUAL POP-CHARGER INSTALL

370Z DUAL POP-CHARGER INSTALL MANUAL

C.A.R.B. E.O. FOR ALL POP-CHARGER AIR SYSTEMS TO 2009

This is CARB E.O. for JWT Pop-Charger Air Filter Systems to 2010.

POP-CHARGER CLEANING INSTRUCTIONS

POP-CHARGER AIR FILTER CLEANING INSTRUCTIONS