chappohj47
Chappo Built
I had a 1hzt it did not rev as fast as my rebuilt 12ht and I mine is pulling around a 2700kg 75 series ute goes better then my 80 series for shaw my next upgrade is an 3" exhaust then a turbo upgrade probably a G turbo
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It's official, we all have different opinions. At least we can all agree that nothing beats a landcruiser.
The stock turbo outlet on the 12HT is fine running in to a 3 inch pipe.
There may be a lot to be gained from cleaning up the shrouding under the valves. There is a lot of material to be removed there.
View attachment 967693 cleaned up (lots of material removed from the port and under the valve.
View attachment 967697 original casting before clean up
Biggest disadvantage to the 12HT is the very touchy throttle response compared to any of the others. It's very challenging driving a 5 speed 12HT off-road because of this.
Personally, for general driveability and off-roading I would choose the 1HDT or the 1HDFT before the 12HT, but the 12HT is a great engine - more of a highway engine though.
John