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yes 12HT is Di, they have a seductive idle and a luverly 'rattle' when under light throttle. Still wish they were an easily available engine. They can be given a bit more boost and fuel to produce some very nice torque levels, and are reasonable on fuel if geared right (read HIGH). Factory is 4 to 5 psi region, and very low fuel settings. The crankcase is braced, the pistons are overengineered, and they still run a simple inline IP.Quote:
Originally Posted by c.h.i.e.f
JC
When you say crankcase is braced does that mean it is stronger than alot of other blocks by alot? Is the big ends big like the isuzu ? 5psi boost isnt much even for a big motor :o how much boost can it run ? Can it be turned up to say 15psi intercooled and fuel up to 600°c like the isuzu ? Yes they do have a nice purr at idle compared to other engines :) the na 4L's used oil like its going out of fashion I heard but the 12ht is probably a pretty different engine though