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I've only ever driven my 80 with a 1hz. No experience with 1hdt or 1hdft equipped. It's interesting to read about the technical issues of 1hdt vs 1hdft vs 1hdfte - as a motor to replace the 1hz I was thinking initially that a 1hdt is the immediate go-to choice (being that it was a standard...

1hz is still fitted new to some 79's for some markets I believe. But I hear you re power output. My 80's still-original 1hz is a fighter and it doesn't give up, but it wouldn't be anywhere near original factory spec now. Back to the topic - 1hdft without electronics seems like the right answer...

perhaps part of the reason turbo kits for 1hz's exist is because of those known issues with 1hdt's but lots of people say a 1hz's main issue is the indirect injection whereas 1hdt had direct injection.

People go on and on about electronically controlled diesel motors being better than non-electronic controlled ones because you can 'tune' them and there are heaps of places that offer computerised 'performance upgrading' combined with fancy exhaust systems. Why? For example, Toyota 1HD-FT vs...