List of all VH engine variants

[koukimatt]

I'm trying to put together a list of all the VH engine variants with the features and differences between each one.

Features common to all variants- 90 degree V8.- Aluminum block with deep skirt design.- Aluminum heads with closed upper deck design.- DOHC, 4 valves per cylinder.- Pentroof combustion chambers.(http://en.wikipedia.org/wiki/Nissan_VH_engine, retrieved 2009-01-06)

List of all VH engines and variants- USDM VH45DE v1: Infiniti Q45 G50 (1990-1993)- USDM VH45DE v2: Infiniti Q45 G50 (1994-1995)- USDM VH45DE v3: Infiniti Q45 G50 (1996)- USDM VH41DE: Infiniti Q45 FY33/FYG33 (1997-2001)- JDM VH45DE: Nissan President HG50 (1991-2002)- JDM VH41DE v1: Nissan Leopard Y32 (1992-1997), Cima Y32 (1991-1996)- JDM VH41DE v2: Nissan Leopard Y33 (1996-1999), Cima Y33 (1996-2001)- VRH35Z: Nissan R89C, R90C and R92C Group C race cars- VRH35L: Nissan R390 Le Mans race car- VRH50: Nissan R391 Le Mans race car

USDM VH45DE v1: Infiniti Q45 G50 (1990-1993)FSM: link needed- Forged steel crankshaft.- Forged steel connecting rods.- 6 Bolt main bearing caps with studs.- Full-length main bearing girdle.- Lightweight, floating pistons with molybdenum coating.- Sodium-filled exhaust valves.- Cross-flow cooling system.- Hydraulic lash adjusters.- Single-row silent timing chain.- Coil-on-plug ignition system.- Roller rocker arms for reduced friction.- Variable Valve Timing.- Max power: 278 HP (207 kW) @ 6000 RPM.- Max torque: 292 lb-ft (396 N/m) @ 4000 RPM.- Redline of 6900 RPM.- Compression ratio of 10.2:1.- Bore x Stroke: 93 mm x 82.7 mm. (Displacement: 4494.188 cc, 274.252 ci)- Dimensions: 890 mm (L) x 740 mm (W) x 725 mm (H).(http://en.wikipedia.org/wiki/Infiniti_Q45, retrieved 2009-01-06)- 4 of the main bearing bolts are vertical, 2 are cross-bolts (horizontal).- Multiport fuel injection with equal length runners.- 370 cc injectors.- 2 compression piston rings.- 1 oil piston ring.(zer...age=1, retrieved 2009-01-06)- Plastic camshaft timing chain guides; may crack and disintegrate on high mileage engines.- "Siamese" double circle intake ports.- OBD I.(need citations)

USDM VH45DE v2: Infiniti Q45 G50 (1994-1995)FSM: http://www.nicoclub.com/FSM/Q45/1994_Q45/- Metal camshaft timing chain guides.- Oval intake ports.- Revised disc injectors.(http://en.wikipedia.org/wiki/Infiniti_Q45, retrieved 2009-01-06)- Firing order: 1 8 7 3 6 5 4 2(FSM)

USDM VH45DE v3: Infiniti Q45 G50 (1996)FSM: http://www.nicoclub.com/FSM/Q45/1996_Q45/1996_Q45/- No Variable Valve Timing.- OBD II.(zer...age=2, retrieved 2009-01-06)

USDM VH41DE: Infiniti Q45 FY33/FYG33 (1997-2001)FSM: http://www.nicoclub.com/FSM/Q45/1998_Q45/1998_Q45/- Bore x Stroke: 93 mm x 76 mm.- Max power: 266 HP (198 kW) @ 5600 RPM.- Max torque: 278 lb-ft (377 N/m) @ 4000 RPM.(http://en.wikipedia.org/wiki/Nissan_VH_engine, retrieved 2009-01-16)- No main bearing beam.- No spider-style intake manifold.- Single-row timing chain.- Uncapped camshafts.- Oval intake ports with notches.(http://www.gpforums.co.nz/thread/301359/?s=, retrieved 2009-01-06)- OBD II.(zer...age=2, retrieved 2009-01-06)- Top-mounted alternator.- Power steering and air conditioning pumps positioned higher and on opposite sides from VH45.(zer...ssues, retrieved 2009-01-31)- Additional webbing cast between spark plug holes in the head.(zerothread?id=227562, retrieved 2009-02-01)

JDM VH45DE: Nissan President HG50 (1991-2002)FSM: link needed

JDM VH41DE v1: Nissan Leopard Y32 (1992-1997), Cima Y32 (1991-1996)FSM: link needed- Main bearing beam.- Spider-style intake manifold.- Oval intake ports.- Two-row timing chain.- Capped camshafts.(http://www.gpforums.co.nz/thread/301359/?s=, retrieved 2009-01-06)- Top-mounted alternator.- Power steering and air conditioning pumps positioned higher and on opposite sides from VH45.(zer...ssues- Sodium-filled exhaust valves.- Additional webbing cast between spark plug holes in the head.(zerothread?id=227562, retrieved 2009-02-01)

JDM VH41DE v2: Nissan Leopard Y33 (1996-1999), Cima Y33 (1996-2001)FSM: link needed

Todo / More Info Needed- Identify any missing variants (JDM VH45 v2?)- Fill in missing details (JDM VH41 v2, JDM VH45)- Weights for different variants (mainly VH41 vs VH45)- Compression ratio for VH41s- Compatibility between variants: Rotating assembly, head, accessories, transmission/bellhousing pattern- Max HP/TQ @ RPM (stock); advertised vs. measured, crank/flywheel vs. rear wheel- Confirm info against FSMs

Please help me complete this! If you have any info to contribute or corrections to make, please post them. I'm not an expert... I'm just collecting all the facts I can find.
Modified by koukimatt at 4:47 AM 4/29/2009

[Kirby260]

I have got a second JDM engine from a Leopard front cut, there are differences to my current engine JDM Y32 Cima. Will catalog for science.

Also WRT to JDM VH41DE v1 vs. v2.

see my post here:zerothread?id=383824