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Old 17 Nov 2017, 18:44 (Ref:3781087)   #46
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I wonder if that idea could be expanded on a bit? Could you have LMP1 with white, but red highlights, LMP2 with white and blue highlights, etc. So you knew what kind of car was approaching you from behind?
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Old 17 Nov 2017, 19:21 (Ref:3781095)   #47
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They look like pitlane lights to me.
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Old 17 Nov 2017, 19:24 (Ref:3781096)   #48
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I think this is great to see some more engine variety, but the DSC article seems to say it is based on the current P2 not the old engine:
Hmmmm......I think dragonspeed are being incredibly brave with the gibson LMP1 engine.....ironically they won LMP2 at lemans a few years back with a turbo V6 Honda engine,there is no logical reasoning to link high revving NA engine to finishing and reliability.....does not add up for me, but none the less it will be interesting to compare with the AER unit in the same chassis. I dont expect the fuel consumption to be great.

The gibson 4.5 will need a direct injection conversion to be competitive, so thats new heads and pistons straight away, and a lot of development time, so to get all that ready and reliable for the start of the WEC season is already tight in terms of timing.
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Old 17 Nov 2017, 19:39 (Ref:3781103)   #49
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Hmmmm......I think dragonspeed are being incredibly brave with the gibson LMP1 engine.....ironically they won LMP2 at lemans a few years back with a turbo V6 Honda engine,there is no logical reasoning to link high revving NA engine to finishing and reliability.....does not add up for me, but none the less it will be interesting to compare with the AER unit in the same chassis. I dont expect the fuel consumption to be great.

The gibson 4.5 will need a direct injection conversion to be competitive, so thats new heads and pistons straight away, and a lot of development time, so to get all that ready and reliable for the start of the WEC season is already tight in terms of timing.
Actually aer p60 is a quite high rev engine despite being twin turbo.
In 2015-2016 in the back of rebellion, drivers shifted up close to 8000rpm.
Engine was however powerful and had a good fuel miliage overall (the usual stint window of about 40-45 minutes, can't remember if it was a 75L fuel tank or larger). If the power target will be raised up to 700hp, guess will be required a larger fuel tank.
Gibson, no matter if a updated old 4.5 or modified more recent 4.2, will need to rev up close if not over 10000rpm. Of coure could be required a larger fuel tank as well (or maybe not.... cadillac dpi this year started with a 75L fuel tank and received a 64L nerf.... but however kept the same fuel milliage for some unknwon reason).
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Old 17 Nov 2017, 20:18 (Ref:3781114)   #50
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Hmmmm......I think dragonspeed are being incredibly brave with the gibson LMP1 engine.....ironically they won LMP2 at lemans a few years back with a turbo V6 Honda engine,there is no logical reasoning to link high revving NA engine to finishing and reliability.....does not add up for me, but none the less it will be interesting to compare with the AER unit in the same chassis. I dont expect the fuel consumption to be great.

The gibson 4.5 will need a direct injection conversion to be competitive, so thats new heads and pistons straight away, and a lot of development time, so to get all that ready and reliable for the start of the WEC season is already tight in terms of timing.
Was waiting to hear you chime in on the engine plan with Gibson. And BR's choice of the AERs, great power but seems like they run a LOT hotter than others but with their own chassis specific cooling needs can be designed in from the start. I haven't had a chance to read the DSC article about it and their plans, stupid network times out on DSC every time here at work. But your insight does help those of us without deep engine knowledge and is always looked forward to.
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Old 17 Nov 2017, 20:49 (Ref:3781117)   #51
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Was waiting to hear you chime in on the engine plan with Gibson. And BR's choice of the AERs, great power but seems like they run a LOT hotter than others but with their own chassis specific cooling needs can be designed in from the start. I haven't had a chance to read the DSC article about it and their plans, stupid network times out on DSC every time here at work. But your insight does help those of us without deep engine knowledge and is always looked forward to.
Well, im not saying the AER P60 is the right choice either!.....i believe its too small on capacity which requires the high revs and lack of low-speed torque......i think tbe nissan-cosworth 3.0 and mechachrome 3.4 turbo V6 motors will be better motors to have in 2018.....hopefully Kolles will buy a better LMP1 chassis for the Nissan motor to shine in.
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Old 17 Nov 2017, 22:28 (Ref:3781131)   #52
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translation from french

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While the BR1 was presented today in Bahrain, Advanced Engines Research (AER) provided some details on the engine that will equip this new LMP1,

The P60B engine will propel this BR1, the P60B being an evolution of the P60 that fitted the Rebellion R-One who had won the Endurance Trophy of private LMP1 in 2015 and 2016.

The P60B is a 720 horsepower twin-turbo V6 engine, light and compact like its predecessor, the P60. Mike Lancaster told us that the power could go up to 900 horsepower, but without the fuel restrictions that will probably be applied. Mike Lancaster also told us that the maximum torque was 850 Nm. Moreover, AER, who provided us with the picture of the engine, does not reveal the engine capacity of the P60B.

Mark Ellis, Technical Director of AER: "The AER LMP1 engine has been the subject of continuous development since its inception in 2011. However, all the changes we have been working on since last January represent sufficient progress to motivate its change of name. The P60B incorporates enhancements that mark a step forward in both performance and reliability, which is necessary for consistent endurance success. "

Some of these changes include fuel pressure, cylinder head molding, lubrication system, engine ignition and calibration,

The P60B had a long time on the test bench at AER, exceeding the requirements of a 24-hour race like Le Mans.
http://www.endurance-info.com/fr/que...60b-de-la-br1/
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Old 18 Nov 2017, 02:01 (Ref:3781159)   #53
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(or maybe not.... cadillac dpi this year started with a 75L fuel tank and received a 64L nerf.... but however kept the same fuel milliage for some unknwon reason).
I've always been impressed with the gm fuel mileage, was the same way in the old Corvette dp. It did seem like they could produce fuel at times.


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Thanks, good info to have. Didn't know they were making changes to the motor.

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Old 18 Nov 2017, 02:40 (Ref:3781166)   #54
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Why are AER being so secretive about the engine displacement?
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Old 18 Nov 2017, 07:34 (Ref:3781182)   #55
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Yeah, me too can't understand all this mystery behind engine displacement... but the same can be said for porsche too!
Remember in 2015 that porsche engineers revealed that the engine for 2015 919 was completely reprojected and almost made from scratch and the displacement was slightly increased.... but is still 2L according to official statements.

Anyway about p60b, torque and power figures are not very indicative, because pushing to the limits turbo pressure you can get insane power. Guess will be impossible for now to know if is still 2.4 or larger (not over 3L I guess however).
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Old 18 Nov 2017, 09:50 (Ref:3781198)   #56
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The car looks good so far, can't wait to see it on track
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Old 19 Nov 2017, 11:08 (Ref:3781470)   #57
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I'd rather have Zytek than AER for sure if I was going for pure reliability. However I think in qualifying the ART-SMPs will be pretty good, especially if the new chassis are as ultra low downforce focused as the LM kit P2 Dallaras. They just need to be able to handle the corners AS WELL as straights this time round
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Old 19 Nov 2017, 16:46 (Ref:3781516)   #58
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The 2.4-liter V6 turbo powerplant, now known as the P60B....
http://sportscar365.com/lemans/wec/a...gine-for-2018/
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Old 20 Nov 2017, 05:01 (Ref:3781610)   #59
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I'd rather have Zytek than AER for sure if I was going for pure reliability. However I think in qualifying the ART-SMPs will be pretty good, especially if the new chassis are as ultra low downforce focused as the LM kit P2 Dallaras. They just need to be able to handle the corners AS WELL as straights this time round
Lots more aero freedom in lmp1 than in lmp2. The front splitter area and between the wheels are a lot more open, that's the biggest area of gains to be made. You can see they have the aero 'feet' behind the front wheels.
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Old 20 Nov 2017, 07:36 (Ref:3781622)   #60
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A bit of scrawling by me (watermarks are from my web-site). I was always amazed by old AutoSprint (70's) pictures.

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