Billet engine anyone?

Gaijin said:
It's important to remember that this is for race/competition/conceptual use as as such, its reliability is lower, maintainance required is far higher and its life is comparably very short.

I know my mate's allumium billet con rods on his drag engine have a maximum life of a day or two, if not a few runs.
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That's because aluminium alloys tend to have very limited fatigue life compared to steel, and this is a major issue in such a stressed component. Titanium is better, but still not as good as steel.
 
Billet Ti crank and hollow Ti cam. I am impressed :cool:

Pointless when you could make the same numbers with a bigger engine for a lot less, but cool nonetheless!
 
Its lighter,(half the density) and easier to machine than Ti aswell. Ti tends to suit forging hence a crank can be made to near net shape. A block would need a vast amount of machine time.
 
peterattheboro said:
Just imagine doing all that in a V8/V12! :eek:
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They already do - well the whole billet/CNC stuff anyway. They don't use Titatnium:-

which is why aluminum is used in place of titanium, because titanium connecting rods transmit too much of the combustion impulse to the big-end rod bearings,[citation needed] endangering the bearings and thus the crankshaft and block.
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http://en.wikipedia.org/wiki/Top_Fuel#Top_fuel_engines

The block is machined from a piece of forged aluminium.
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The cylinder heads are machined from aluminum billets
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The camshaft is billet steel,
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Billet steel crankshafts are used
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