12HT into HJ75 Ute

Who told you that a 12HT has the same power and torque as a 1HZ?


Shane

1hz has about the same power/torque as a 12HT..............NO
1hz has 285Nm@2200rpm and 96kw@3800rpm, Im not exactly sure of the 12ht now (previously thought it was 110kw/330Nm in factory form) as someone has posted differently but being a direct-injection turbo charged motor it would have greater low down torque and will rev far easier than a unboosted 1hz (Ie will rev) and keep pulling to almost the red line where a 1hz is normally goneskies by 3000rpm.

12ht has a 2H block so it will bolt straight in, the 1hz has different mounts.

A mate swapped one into his 60 series 2H for a total of $12,000. It was a completely rebuilt motor that he had ported, blue printed and the bottom end balanced and tuned it for a 3" exhaust, it made 128kw/390Nm at the flywheel and would have kept doing so but some rotten b@stard pinched it, used it in a ram raaid then torched it.

Bloody nice truck

Benny and Shane,

Hey guys read the post again, I did not say the same as I said ABOUT the same as. If I had the time I would have posted the figures for both engines but I knew someone else would have the time and the correct numbers and post them.

Either way all I was doing was putting forward an option that may or may not have been what the original poster was after.

Steve.

The power and torque figures posted by Rockape stating the 12HT at 100kW and 315Nm are the same as Toyota specs, not 110kW and 330Nm as stated by Benny although they are about the same. ;-)

Basically the same block as the 2H so it is a bolt in job (Different heads). The shutoff is done via vacuum instead of EDIC motor so minor wiring modification is required I think.

12HT have similar blocks, reinforced pistons & conrods, but the biggest gain over a 2H is the fact they have direct injection and run a comparativley low turbo boost giving good low down torque(not reliant on turbo,as many T/Ds are) BUT you must beware of bottom end failures.
I own a 1HZ and would have no problem owning a 12HT in prefence,except they are a little long in the tooth now.
Have owned a 1HDT (superseded 12HT) and it suffered turbo lag down low but went better once was wound up.
If I was in your position, I would source 1HDTFE (24 valve motor),probably cost similar,but more power and torque(118kw/380 nm torque I think)not to much would need to be modifide
Shane

151kw and 435nm standard.Paul

ooops. . . . not 1HDTFE,The motor I was wanted came after the 1HDT and before 1HDTFE, it had 24 valve but not the electronics thus having lower power outputs and came out in the late 1990's 80 series crusier
Shane

1HDFT is what u were after 122kw and 390nm me thinks .Paul

Sorry, got carried away...using your box, a hzj75 bellhousing and engine mounts and engine brackets for mounts will bolt a hdt/hdft in...but you can also use the 80 series gearbox too and then the fzj75 transfer shifter, crossmember/tailshafts are needed, as the 4.5 75 series runs the 80 series box std.