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Old 17 Jun 2010, 15:27   #46
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Originally Posted by HORNDAWG View Post
IF a 2.0L happens to be used, I would imagine it with 2 VGTs.
Not allowed. At least in the current LMP2 engine rules which are supposed to become the LMP1 2011 engine rules:
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5.1.2 – displacement limit
b/Turbo/Supercharged engines (gasoline): 2000 cm3 (4) 6 cyl. maximum
...
(4) Only one single stage charging device and air/air and/orair/water heat exchanger.
...
5.2.2 - Charging devices incorporating ceramic components, variable diameter inlets and adjustable internal vanes are forbidden. Adjustable internal vanes fixed on the turbine housing are permitted.
Rule 5.2.2 is the one that allows variable turbine geometry. I am not sure that VTG turbos can be done on a petrol engine without ceramic components.
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Old 17 Jun 2010, 15:41   #47
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Originally Posted by gwyllion View Post
I am not sure that VTG turbos can be done on a petrol engine without ceramic components.
Three words: Porsche 997 Turbo.

And it's now in the VW/Audi family, so the technology is very very definitely available.
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Old 17 Jun 2010, 15:44   #48
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HORNDAWG should be qualifying in the top 5 on the gridHORNDAWG should be qualifying in the top 5 on the gridHORNDAWG should be qualifying in the top 5 on the grid
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Old 17 Jun 2010, 15:57   #49
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Three words: Porsche 997 Turbo.
... which uses "temperature-resistant materials derived from aerospace technology". It is not clear whether BorgWarner and Porsche use a ceramic material or some special alloy. Hence my remark.

However, the R15+ V10 TDI does use a VTG turbo that can withstand temperatures about 1000°C and is within the current ACO rules. I don't know if that is enough for a race petrol engine.
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Old 17 Jun 2010, 16:24   #50
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I was trying to say that, because of that, Audi have access to the petrol VTG technology, so adapting it to a racing engine shouldn't be too hard with the concentration of brains in that technical squad.
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Old 17 Jun 2010, 17:07   #51
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Ok, but I am trying to say that the Porsche VTG turbo might use ceramic turning vanes, which are forbiden by the ACO rules
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Old 17 Jun 2010, 17:09   #52
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If anyone can make it work, it's Baretzky's squad.
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Old 17 Jun 2010, 20:19   #53
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If anyone can make it work, it's Baretzky's squad.
The only way they'll make it work, is if it's worth the effort!
The engineers can be used to find the same speed on others areas for less effort (possible).
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Old 17 Jun 2010, 21:16   #54
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They have experience with VTG turbo + direct injection, alas in a diesel engine. I think this is dream combination for engine engineers. Torque over a very wide rev range, almost no turbo lag and very good fuel economy.
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Old 17 Jun 2010, 21:39   #55
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Not allowed. At least in the current LMP2 engine rules which are supposed to become the LMP1 2011 engine rules:
Hmm, and yet the HPD 2011 P-1 engine is a 2.8L V6 Twin Turbo (6-11 news) , and Audi is working on a V6 diesel TT seems they may know something we do not, eh?






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Old 17 Jun 2010, 21:51   #56
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Has that HPD P1 engine been confirmed or was there confusion with the new P2 motor?
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Old 17 Jun 2010, 23:30   #57
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Has that HPD P1 engine been confirmed or was there confusion with the new P2 motor?
NO, Honda engine is P2! Motorsports.com was in error about the engine's displacement and category.
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Old 18 Jun 2010, 01:03   #58
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NO, Honda engine is P2! Motorsports.com was in error about the engine's displacement and category.
Mike i'd like your opinion on this one... considering that LM has always been THE track for "closed" cars, and that will always be the place where a coupè will be better than a spyder, at least on pure performance... could it be that with reduced power as in 2011 the "closed" cars could have a little bit of an advantage also on the other tracks? i heard on RLM that the very high downforce designs like, for example, the Acura ARX-02 would not be competitive at all with the new downsized engines
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Old 18 Jun 2010, 01:11   #59
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Mike i'd like your opinion on this one... considering that LM has always been THE track for "closed" cars, and that will always be the place where a coupè will be better than a spyder, at least on pure performance... could it be that with reduced power as in 2011 the "closed" cars could have a little bit of an advantage also on the other tracks? i heard on RLM that the very high downforce designs like, for example, the Acura ARX-02 would not be competitive at all with the new downsized engines

What difference does that make, as the ARX-02 is mothballed.
The ARX-01 runs the right engine already and when equalized with the current P-1s is competitive (in the ALMS). So if it is done right it will work quite well, but there is that big word, IF.





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Old 18 Jun 2010, 05:06   #60
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Mike i'd like your opinion on this one... considering that LM has always been THE track for "closed" cars, and that will always be the place where a coupè will be better than a spyder, at least on pure performance... could it be that with reduced power as in 2011 the "closed" cars could have a little bit of an advantage also on the other tracks?
Mike already gave his comments in the LMP Future Regulations topic.
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