Quote:
Originally Posted by MulsanneMike
Fully developed engines already exits in the form of current LMP2 engines. With a differentiation of restrictors you could then run the same engines in either P1 or P2. But then that would have been too easy. Instead, the proposal is for "homologated" engines, defined as such:
a. The engine must be made in a minimum of 1000 units in 12 consecutive months and come :
- Either from a grand touring car,
- Or from a large production cars.
And while the block and cylinder heads can't be modified, the list of free is such:
Crank shaft, flywheel, connecting rods, pistons, valves, valve train, camshafts, intake and exhaust system, ECU, lubrication and cooling systems.
So you could start with a GT2 engine, but then you'd want to swap most of the internals out in order to find a competitive advantage.
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Have things changed from the original proposal as there seemed to be a distinction made between homologated GT2 engines and production motors.
Quote:
And LMP2 will have the following choice (limited to 420 BHP):-
* 4.0 ltr production based petrol engine homologated to 2010 LM GT2
* 4.5 ltr production based petrol engine
* 4.0 ltr production diesel engine with induction as per the original
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The IES Nissan V8 seems to have muddied the waters as it is a production engine but rather than being built to the 4.5l production regs, they've been given the go ahead to design it to the same spec as a 4.0l homologated GT2 engine.
Presumably production engines are 500cc larger than homologated GT2 motors as they are allowed fewer modifications.