There are as many opinions about diesel swaps as there are threads on MUD about them.
The 1Hx series of Toyota diesels are smooth, fast, and the naturally aspirated 1HZ is still being made today. You can buy every single part for a 1HZ brand new, and have it shipped here in four days from the Middle East. A lot of Cruiser specific shops here in the states stock tons of Toyota diesel parts, such as Cruiser Outfitters (
@cruiseroutfit) and Valley Hybrids (
@orangefj45).
A naturally aspirated 1HZ feels a lot like a 2F, or 3FE, but gets nearly double the fuel mileage- though don’t ever really consider fuel mileage alone as a rational reason to do a diesel swap- as you’ll fall waaaay behind in cost/benefit ratio.
You can easily turbo a 1HZ, but because it is an indirect injected diesel, you have to do it carefully, watching your EGT’s and boost. Done correctly they haul all kinds of @$$. I helped @davegonz with his swap a couple of years ago.
A 1HDT is an awesome motor (I drive an HDJ80 daily), and its bigger brother the one 1HDFT is even smoother and more fun. I myself in building 2 1HDFT cruisers as we speak.
And don’t forget the 12HT, the asynchronous growling beast. I’m currently having the one out of my HJ61 been rebuilt by
@roma042987 , and I can’t wait to get it back on the road.
While you may have guessed by now that I am a Toyota diesel fan, I certainly have nothing against the other motors mentioned. I have wheeled with
@The Phoenician and know how much work has gone into Big Red!
Keep this thought near the front of your head: every single 60 series is 30+ years old, and so are all of their parts. Almost all the diesels that anyone has mentioned (Toyota or otherwise), will eventually have parts availability problems- except the currently produced 1HZ and the Cummins R2.8. The 12HT is probably closest on the cusp of true parts availability procurement problems. Things are starting to be NLA that were available even a year or two ago. Don’t let that stop you, because global parts acquisition has never been easier. There are a ton of resources here on MUD and a lot of Cruiser specific shops in the states that can guide you and find parts for you. You can’t go down to AutoZone or Advance; you may have to wait for days for six weeks if something hard to find goes out.