How would you go ( I know bore / stroke will be different but hell your putting in custom parts anyway ) starting with the diesel block which will be built to take hugh chamber pressures and then build up a petrol version.

Huge potential for PSI but still the funability of the current engine.

Could you make it work???? Surely with the bucks some are spending on builds this could be a unique and awsome project.

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Real man's engine!

Imagine the clearances - Probably works in 10's of centimeres.

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^^^ lol, bet the clearances are better than ramon's cossie engine. What a beast!
5,608,312lb/ft@102rpm!!!!! That 7,603,850Nm!!!!

Love the stairs going into the sump from level with the crank. Imagine doing an oil change, it'd take 3 weeks to drain lolzer

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Hope they aren't running Motul

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Some of the modern japanese diesels are great aswell. I have been driving a new 4x2 hilux diesel. I get (95% city cycle) between 8 and 8.5 l/100 km depending on how much weight I have on the back.

No doubt it rattles a bit more than a euro diesel however I have driven and ordered a new landcruiser sahara with the twin turbo v8 diesel in it. The thing pulls like a train. 650 nm will do that.

Brendon

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There is almost a direct relationship between displacement and torque. Things like vvt et al make a small difference to torque but they are designed to aid power and driveability.

Look at some of the old lazy v8 pushrod petrol engines. Mega capacity, mega torque.

Brendon

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yes and no, while it's true that 99.9% of big V8's make great torque, displacement isn't the bottom line. Displacement is derived from stroke multiplied by bore diameter. Most V8's have a big fat bore and a good 5.5"+ of stroke which usually restricts max rpm to around 5500, 327 Chev's can be taken to around 8000 before major damage starts occuring. Torque is the turning force and is closer related to the length of stroke combined with the offset of the big end compared to the centreline of the crankshaft. As you can see from the pics, not only are the pistons absolutely fn hoooooge, the rods are too, way more out of proportion than you'd find in any other car engine.

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what is said above is ture, torque is more defined by the length of the stroke compared to the bore. Long stroke restricts max engine rpm because when piston speed becomes too high there is too much stress on the rods, bearings, etc. Intake manifold design also affects torque as well as cam timing.

mazda have some great examples of intake manifolds that have up to 4 different lengths, which help to give the engine a massive flat torque curve. Combined with varible cam timing, you can get peak torque at all rpm's( to the limit of the cams grind and head flow)

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