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The engine itself can be had for $9k, or less. All the other areas that need to be addressed for such a swap (transmission, transfer case, cooling) would need to be addressed, even for an OEM engine rebuild. That extra $2k-$4k is going to be spent regardless of which route you go.
You said:
"The whole setup can be had $9k, sometimes less depending on available rates, and that's everything you need for the swap, minus some brackets/mounts and exhaust fittings."
Now you're tacking on an extra $2-4K to that figure. Didn't you say my guesstimate of $15K was BS?
No it's not a fair comparison. You're comparing the cost of a salvaged 20 year old gasoline engine, with no maintenance history, to that of an OEM crate engine....totally different engines with totally different levels of refinement and reliability. No one should be surprised, or put off, by that cost difference.
I'm not going to get into a debate with you on whether the 2.8l Cummins is financially "worth it." Justifying such an engine swap is more based on emotional needs and wants than it is on financial logic. If you're truly concerned about cost, don't do an engine swap at all. Go find a slightly newer vehicle that is in better mechanical shape. You'll spend far less money in terms of maintenance and repairs over the long run.
Sure it is a fair comparison. Say my engine seizes tomorrow...I am looking at all of my options of how to repower it. Do I stay stock or do something completely different?
One hand you're saying don't do a 20 year old gas engine...but on the other buy a used newer vehicle that you have no idea how the owner treated it.
If that's your perception of the 2.8l Cummins, then I'd recommend you learn how to read torque and horsepower graphs. The nature of that power delivery is far different from most other offerings on the market. And that 5-6 mpg gain, as meager as it sounds, may extend an overlander's range by quite a bit. Again, none of these arguments are related to costs...it's about what people want.
Oh I know how to read tq/hp graphs. I drive my truck at around 2300 rpm...is the swap worth the costs to drive it at a slightly lower rpm?
Extended range is a cheap easy fix. I always have a couple jerry cans with me on trips.
It most certainly related to costs, costs is deciding factor if I want it or not. I certainly can afford a 2.8 swap...and because of the costs, and marginal performance gains...makes me not want it.
No. Firstly, it's not legal (the Cummins is EPA-compliant for vehicles up to 1999, or something like that). Secondly, my 4runner is in good mechanical shape and doesn't need a replacement engine.
Does that answer your question?
I am asking if you could do the swap in your 4Runner, would you? If it was legal and your engine seized, then had to repower it.