Some Isuzu 4BD1/2 info and comparison to a Cummins 4BT
4BD1
Cylinders: 4
Injection: direct
Injection pump: Bosch/Zexel type A inline pump on RHS (drivers perspective)
Bore: 4.0157in
Stroke 4.6457in
Valves: 8
Inlet manifold seperate casting RHS (drivers perspective).
Exhaust LHS (drivers perspective).
Weight: Approx 770lbs turbo. 744lbs NA (source Isuzu spec sheet from 1988)
Dimensions NA: 31.3in long x 27.8in wide x 29.7in tall.
Bellhousings: SAE #3 automotive (rare), SAE #3 industrial (rare), Landrover LT85/95 (rare), Isuzu truck pattern (most common).
Starting aids: Glowplugs and excess fuel.
Electrical: 12v in US market, 24v in rest of the world.
Turbochargers: IHI RHB6 (early), Garrett T25 wastegated (early), Garrett T25 freefloat with T3 flange or Garrett T25 wastegated with T3 flange.
Alternator: 12v or 24v depending on market, vacuum pump on rear. Located high on LHS (drivers perspective).
AC Compressor: if fitted below alternator on LHS (drivers perspective).
Power output NA: Varies but up to 104.6hp @ 3200rpm.
Torque output NA: Varies but up to 194ftlbs @ 1900rpm.
Power output Turbo: varies but up to 140.8hp @ approx 3000rpm.
Torque output Turbo: Varies but up to 243.4ftlbs @ approx 1800rpm.
Boost: Approx 13psi stock.
This is from 4BTswaps Isuzu section and made by Dougal
STICKY: Isuzu 4BD1T/4BD2T Reference
This is a compilation of threads of interest on 4BTswaps.com and elsewhere on the internet.
If there is something you'd like added, then post it up below. I will edit them in and then delete your post to keep this thread short and tidy.
Cheers
Dougal.
Introduction:
Isuzu 4BD1T Introduction.
Offical Power & Torque Figures
http://www.4btswaps.com/forum/showth...-Torque-Curves.
Turbo Sizing with Potential Power & Torque Figures
http://www.4btswaps.com/forum/showth...nce-Prediction.
Isuzu NPR Years and Engines (US)
2003 4bd2r?
Gearboxes & Bellhousings:
List of Isuzu gearboxes and applications
Isuzu Gearboxes.
4BD1T & 4BD2T Bellhousings:
Isuzu 4BD1 Bell-housings.
4BD1T & 6BD1 Bellhousings:
http://www.4btswaps.com/forum/showth...s-and-Housings
Isuzudieselswapper Adaptor System:
Site Disabled - FreeServers
4BD Conversions Adapter System for NV4500:
GaBiodiesel - BioDiesel processor kits and instructional videos
700R4 TV cable setup:
Isuzu 3.9L and the 700R4??
List of Isuzu Engines:
Other Isuzu B series engines.
4BD1T & 4BD2T Turbochargers:
4BD1T Turbo Sizing and Performance Prediction
http://www.4btswaps.com/forum/showth...nce-Prediction.
Factory Turbochargers, IHI & Garrett
4BD1T & 4BD2T Turbos.
Garrett T25
T25 Turbo.
Discussion
Which turbo to use?
Holset HE221W (Cummins ISB turbocharger)
http://www.4btswaps.com/forum/showth...sults&p=188703
Garrett GT2259 (Hino) turbo:
http://www.4btswaps.com/forum/showth...p?24268-Gt2259
Part Numbers:
http://www.4btswaps.com/forum/showth...-Number-Thread
Bolting Torque:
4BD1T Bolting Torque.
ARP Head Stud Part Numbers:
http://www.4btswaps.com/forum/showpo...29&postcount=4
Piston and Liner Grades
http://www.4btswaps.com/forum/showth...-4BD1T-Pistons
Factory Service Manuals
4BD1T
4BD1T FSM now available
4BD2T
Bauchan.org
Isuzu NKR truck manuals
http://www.weatherproof-windows.co.u...repair_manual/
Other Forums & Threads
IH8MUD 4BD1T landcruiser thread
https://forum.ih8mud.com/diesel-tech-...bd1t-swap.html
AULRO The Isuzu Landrover Enthusiasts Section (TILES)
http://www.aulro.com/afvb/isuzu-land...iasts-section/
Fuel Injection Pump & Tuning
Injection Pump Removal, Refit and Timing
http://www.4btswaps.com/forum/showth...IP-incl-Timing
Injection Pump & Governor Indentification
http://www.4btswaps.com/forum/showth...mp-Governor-ID
Bosch Type A injection Pump
http://www.4btswaps.com/forum/showth...Injection-Pump
Bosch RLD Governor
http://www.4btswaps.com/forum/showth...h-RLD-Governor
More Power thread
more power from a 4bt1t/2t
The
MORE POWER screw
http://www.4btswaps.com/forum/showpo...4&postcount=27
Fuel Pump Cables 4BD1T
Mystery Cable?
Fuel Shutoff/Enrichment 4BD2T
http://www.4btswaps.com/forum/showthread.php?t=3331
Shutoff Solenoid Wiring
http://www.4btswaps.com/forum/showth...ed=1#post31959
Boost & Altitude Compensators (Aneroids)
http://www.4btswaps.com/forum/showthread.php?22082
http://www.4btswaps.com/forum/showthread.php?t=7576
4BD2T setting of Injection Timing
http://www.4btswaps.com/forum/showth...setting-timing
Tuning and Problem solving (timing, turbos, boost compensators etc):
http://www.4btswaps.com/forum/showth...Turbo-Question
Parts Wanted and Sourced
http://www.4btswaps.com/forum/showthread.php?t=2981
Notable Swaps:
Dieselbuggies Rail
http://www.4btswaps.com/forum/showthread.php?t=7435
Carcrafters twin turbo 4BD1T
http://www.4btswaps.com/forum/showthread.php?t=3300
Starter Motor Cross Reference:
http://www.4btswaps.com/forum/showth...u-Starter-Info
Starter Motor Clocking:
http://www.4btswaps.com/forum/showth...839#post125839
Tachometer fitment:
6BD1 mechanical tacho drive
http://www.4btswaps.com/forum/showth...cal-Tach-Drive
4BD2 Block Heater Install
http://www.4btswaps.com/forum/showth...eater-Write-up
Oil Drain Thread:
http://www.4btswaps.com/forum/showth...an-bolt-thread
Thermostat Housing Threads for Water Temp Sensors
http://www.4btswaps.com/forum/showth...ousing-Threads
