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That's interesting and basically the engine is so under-stressed it will take a beating for many years and miles. Put direct injection, twin scroll turbos and a fancy valve management head on and you have the next F1 engine, OK and maybe some bored out cc's.
 

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The best part is the cooling and repeatability of the power. Who cares about a one dyno pull wonder. Tell me what it does on pull number 5. I guarantee that GT2 will pull out serious timing on a road course when it is hot.
 

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pretty low figures on the dyno imho. Maybe that car was not fully run in?
The water charge coolers are responsible for the consistency power but.. with those (relatively low) figures it's not very difficult to have consistent power anyway with a tt 3.8 V8. In my opinion this engine should be making around what the GT2rs made on the dyno. (both in hp and torque).
If the chassis is really that good (and I agree it is) then it could take it, but i guess they needed to leave pace fro next model.
All in all i hope this dyno is not representative of all mp4 engines. It can't be 60-80 rwhp than the GT2RS!

And Fab, we all like the mp4 but if the GT2rs would heat soak as you say then trust me it would not have done the time it did at NBR
 

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Discussion Starter #12
pretty low figures on the dyno imho. Maybe that car was not fully run in?
The water charge coolers are responsible for the consistency power but.. with those (relatively low) figures it's not very difficult to have consistent power anyway with a tt 3.8 V8. In my opinion this engine should be making around what the GT2rs made on the dyno. (both in hp and torque).
If the chassis is really that good (and I agree it is) then it could take it, but i guess they needed to leave pace fro next model.
All in all i hope this dyno is not representative of all mp4 engines. It can't be 60-80 rwhp than the GT2RS!

And Fab, we all like the mp4 but if the GT2rs would heat soak as you say then trust me it would not have done the time it did at NBR
Well the article said that most turbo cars they have tested have really under rated the horsepower at the crank so the GT2 RS has much more power than the 620 the Porsche claims. I recall them testing a Nissan GT-R and they also said there is no way it had the horsepower that Nissan claimed it had to be much higher.
 

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7. 28 SportAuto lap (=full lap minus 3-4 sec)
Yeah - I'm waiting for McLaren's official time (with Chris Goodwin piloting, perhaps).

SportAuto only got one lap with the 12C, and had many many laps in the GT2-RS (and hundreds more in other 911s). I wonder if he'd had a bunch of practice laps how well he'd have done!
 

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Probably would have shaved off another few seconds for sure. There's no way that he didn't make any mistakes on his first run with a completely new car
 

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Dyno means nothing , on the road even I as a mclaren sceptic know how fast that beast is .
Sport auto is the time to use as they use the same driver and use comparable conditions .
You take out the driver factor etc then .
 

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I think it's also important to point out the tire difference between the GT2-RS and the 12C, when comparing the SportAuto times...
 

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pretty low figures on the dyno imho. Maybe that car was not fully run in?
The water charge coolers are responsible for the consistency power but.. with those (relatively low) figures it's not very difficult to have consistent power anyway with a tt 3.8 V8. In my opinion this engine should be making around what the GT2rs made on the dyno. (both in hp and torque).
If the chassis is really that good (and I agree it is) then it could take it, but i guess they needed to leave pace fro next model.
All in all i hope this dyno is not representative of all mp4 engines. It can't be 60-80 rwhp than the GT2RS!

And Fab, we all like the mp4 but if the GT2rs would heat soak as you say then trust me it would not have done the time it did at NBR
Well, McLaren quotes 592HP, which is certainly at the crank or flywheel. Subtract 12.5% parasitic loss, and you get 518 HP at the tires. 514 hp is damn near spot on then, and well within the error of an inertia dyno.
 
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