Some interesting reads comparing the engines:
Dieselology 101 (Compares all models on this page and the Engine Conversions pages)
Corrections to Dieselology (good comparing stats)

What's it like to own a diesel & Doing a swap involving a factory Toyota Diesel
Comparing Various Toyota Diesels for Swaps
Comparing 3B versus the 2H (Added Tue Sept 17th)
Information all About All Makes of Toyota "B" series Diesels (New Window)

Canadian (and other countries) Diesels:
The 2H 6 cyl diesel & 12H-T turbo diesel.
The 3B & 13B-T 4 cyl diesel with bottom end piston cooling.
3B in a Mini Truck
Super rare 1HZ Mine Trucks
My former HJ60 turbo

Non-North American Diesels:
The 1HZ 6 cyl diesel with bottom end piston cooling.
The 1HD-T & 1HD-FT Factory Trubo Charged Engines

Aftermarket Turbos Available for Naturally Aspirated Toyota Diesels
Transmissions for Toyota Diesels
Factory Diesel Parts (Locating Them)
How to turn your fuel up and down on a HJ60 with an Inline Pump

Relevant web pages also found in other sections of this site:
What's it like owning a diesel
24V to 24V Converters
How to turn your fuel up and down on a HJ60 with an Inline Pump
About the EDIC Control
Do not adjust the timing on a diesel Fuel Pump
All about the Fuel Pump
About Fuel Pump Lubrication
Glow Plugs

Other Possibly Helpful Links (will open in new window)
Information all About All Makes of Toyota "B" series Diesels
Factory Engine Manual for all "B" series Engines Online!
American 1HZ swap into an FJ40