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20 Dec 2007, 14:37 (Ref:2092691) | #1 | |
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2008 ACO Technical Regulations
The ACO have announced their technical regulations for 2008.
Sporting Regulations 2008 Le Mans Prototype - LMP1 & LMP2 Le Mans Grand Touring - LM GT1 Le Mans Grand Touring - LM GT2 Appendix A, B & C Happy reading! |
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20 Dec 2007, 14:44 (Ref:2092694) | #2 | ||
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engine wording is interesting - certainly adds fire to the Aston Martin LMP1 rumours
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20 Dec 2007, 14:54 (Ref:2092700) | #3 | ||
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Appendix C is noteable too, particularly for spectators - maybe the ACO can actually get the position indicators to work this year?
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20 Dec 2007, 15:01 (Ref:2092705) | #4 | |||
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20 Dec 2007, 15:13 (Ref:2092708) | #5 | |||
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Semi stressed engine, homologated in LMGT1 and used in a production car built in a quantity of at least 1000 units per year. Do they sell 1000 units per year of any particular production car? |
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20 Dec 2007, 15:17 (Ref:2092714) | #6 | ||
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I'd be staggered if they didn't according to wikirubbish they do 5,000 DB9s per year
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20 Dec 2007, 15:20 (Ref:2092716) | #7 | ||
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Ok, just didn't know, thanks for the correction.
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20 Dec 2007, 15:23 (Ref:2092720) | #8 | ||
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LMP2 :• 80 litres maximum on board
So, as per expected, down from 90 litres. |
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20 Dec 2007, 15:36 (Ref:2092732) | #9 | ||
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I think its a shame they have nobbled the P2's so much (but thats another thread)
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20 Dec 2007, 15:44 (Ref:2092744) | #10 | ||
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As I stated in another thread, Aston have said they'd like to use the V12, but would need performance breaks. |
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20 Dec 2007, 15:51 (Ref:2092752) | #11 | |
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LMP2 can use a homologated diesel engine with 4400 cc displacement. The strange thing is that LMP2 diesels can also use a 80 liter tank. If they applied the same logic as in LMP1, the fuel tank should be 72 liter instead.
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20 Dec 2007, 16:01 (Ref:2092764) | #12 | ||
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The LMP2 diesel regulations are interesting in that they allow two-stage turbocharging, particularly as Peugeot have a 2.2-litre inline-4 twin-turbo diesel engine in production. WR diesel for 2009?
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20 Dec 2007, 16:07 (Ref:2092772) | #13 | |||
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20 Dec 2007, 16:08 (Ref:2092774) | #14 | ||
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So I assume that Zytek, Courage/ORECA, Lola etc. are all going to be in P2 this year, since P1 is "réservé plus particulièrement aux constructeurs." Correct?
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20 Dec 2007, 16:13 (Ref:2092776) | #15 | ||
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I was asking more regarding Astons productions than the Vette, but thanks.
This homologated engine business in LMP2, both Normally Aspirated and Diesel strikes me as odd. So they are encouraging the use of manufacturers engines in the category, but they don't want manufacturers in the category. A bit of mixed signals there really. 4.4 l Diesel... BMW, Ford, any others? |
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20 Dec 2007, 16:14 (Ref:2092777) | #16 | |||
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It's interesting to note that the equivalent capacity for diesel vs petrol is even more in favour of the diesel in P2 than in P1. ie the base for petrol P1 is 6L, the base for diesel is 16.17 (2.94bar x 5.5), so the ratio is 2.7 whereas the base for petrol P2 is 4L (homologated) and the base for diesel is 13.2, for a ratio of 3.3. |
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20 Dec 2007, 16:16 (Ref:2092780) | #17 | ||
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It makes a lot more sense to start from a 4 liter V8. E.g.,
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20 Dec 2007, 16:40 (Ref:2092789) | #18 | |||
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and Ford 4.4 turbo Diesel 330 hp (246 kW) and 515 ft·lbf (698 N·m) |
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20 Dec 2007, 16:44 (Ref:2092791) | #19 | ||
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So I think you should just compare the restrictor size of turbo charged engines:
I think the difference between LMP1 and LMP2 engine rules is rather small. Remember that you have to start from a road diesel engine, and not from scratch like Audi and Peugeot did. |
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20 Dec 2007, 17:00 (Ref:2092803) | #20 | |
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According to John Judd, the E10 fuel (mixture of petrol and ethanol) will produce more power, but worse fuel economy.
Does anyone know if the transition from race diesel (mixture of diesel and GTL) to biodiesel (BTL) has influences on the performance of diesel engines? |
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20 Dec 2007, 17:03 (Ref:2092806) | #21 | ||
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gwyllion or others who might understand French better.
What does this really mean? a. « LE MANS » PROTOTYPE 1 (« LM »P1) : voiture ouverte ou fermée , réservé plus particulièrement aux constructeurs. Are they restricting non-constructors from LMP1? Or is it warning for the future? I really don't understand the practical need for such a notation. If they want manufacturers out of P2, fair enough, but that doesn't require a statement intended to keep privateers out of P1. |
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20 Dec 2007, 17:05 (Ref:2092807) | #22 | ||
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20 Dec 2007, 17:05 (Ref:2092809) | #23 | |||
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Anyway, it seems to me that, were you going to go with an homologated engine, the diesel would be the way to go from a power perspective. Let's face it, there's no cost-effective way to use an homologated engine, otherwise it would have been done years ago - so all this does is provide a power rationale for going that way, which is going to drive up costs in P2. |
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20 Dec 2007, 17:07 (Ref:2092810) | #24 | |||
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Quote:
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20 Dec 2007, 17:13 (Ref:2092815) | #25 | ||
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I read the English translation, but I've seen better Babblefish translations, and we know the french wording is the rule.
Destined more Especially for Manufacturers.... meaning one day this class will be more for manufacturers than privateers, but not to the exclusion of privateers. Destined more especially for privateers... meaning one day this class will be more for privateers than manufacturers, but not to the exclusion of manufacturers. Which really means nothing right? So why introduce words that mean nothing? |
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