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      01-20-2009, 06:56 AM   #45
hks786
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Just something I noticed...

The LP560-4 pushes out 560bhp from a N/A V10. If a 4.2 V8 was based on this, it would reach 452bhp and since the V10 in the R8 is really from the LP560-4, this isnt impossible!
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      01-20-2009, 01:43 PM   #46
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      01-20-2009, 03:10 PM   #47
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Quote:
Originally Posted by hks786 View Post
Just something I noticed...

The LP560-4 pushes out 560bhp from a N/A V10. If a 4.2 V8 was based on this, it would reach 452bhp and since the V10 in the R8 is really from the LP560-4, this isnt impossible!

I like the maths.

If your guess is correct and Audi are using the Gallado LP560 engine minus a bank of cylinder then it will indeed be revving to 8700rpm to produce the 452hp. But of more interest to me is the torque characteristics of the LP560 engine, according to Lamborghini it's 540Nm @ 6500rpm, that M5 high and it's a peaky engine much like the M3. Using your formula that would the RS5 a torque figure of 435Nm at similar revs which would be unacceptable to me.

It's all sounding like another M3 only with awd, it will be a cracker car, just not for me by the sounds of it.

P.S.

What's the chances of it using a larger capacity engine than before, maybe a 4.4 or 4.5L V8, then there wouldn't be the same need for revs and torque could be more evenly spread.
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      01-20-2009, 05:31 PM   #48
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Originally Posted by Bimmer Loyalist View Post
Hmm, doubt it. The GTR was a purpose-built, from-the-ground-up, performance machine. The RS5 will be hampered by the A5/S5's basic--relatively speaking--chassis.
Yeh sorry......I forgot about GTR's special chassis....my bad .....anyway....I hope RS5 is really quick in the track...at least close enough to a 911 turbo's time of 7:40seconds.....

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Originally Posted by hks786 View Post
Okay guys someone pointed this out from another forum. A spreadsheet from last year has had 100% accurate info on all Audi models!

It's been right about the S4, S5, TT-S, RS6, R8 V10 etc. and it claims the RS5 will have a 4.2 V8 N/A 450bhp. I think it could be true since I heard that yesterday from a reliable source!

Check it out:

http://www.shrani.si/f/V/GQ/3vB2IIFZ/audi.xls
Hmmm.....I took a look at the file.....did you read that the new S7 will be sporting a 4.0 V8 TFSI rated at 394k(394hp) ? I hope it's turbocharged but only time will tell if it's TT or SC induction. And also, I was hoping for this engine to make it to the RS4/RS5 but oh well....we gotto to do with a damn highly rated high revving V8

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Originally Posted by hks786 View Post
^^^

Time will tell Footie. I really wanted to see a turbo version myself, but if Audi made a huge success with the RS4, and the new RS6 (in most ways), I'm sure this new RS5 will also be a beast.
+1 to the turbochargers...
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      01-20-2009, 05:36 PM   #49
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Quote:
Originally Posted by footie View Post
I like the maths.

Using your formula that would the RS5 a torque figure of 435Nm at similar revs which would be unacceptable to me.

It's all sounding like another M3 only with awd, it will be a cracker car, just not for me by the sounds of it.

P.S.

What's the chances of it using a larger capacity engine than before, maybe a 4.4 or 4.5L V8, then there wouldn't be the same need for revs and torque could be more evenly spread.
If the torque is broad enough ......it wont be a problem......anyway....you must be knowing more then me about it because you own a M3....so I will keep quiet.

Anyway, I dont care about the high revving engine......I want fuel efficiency along with performance....I want turbo's or supercharger's or both together....I dont care...I just want forced induction in a RS model like the RS6...is that alot to ask....?
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      01-20-2009, 06:36 PM   #50
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      01-20-2009, 07:04 PM   #51
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Quote:
Originally Posted by footie View Post
I like the maths.

If your guess is correct and Audi are using the Gallado LP560 engine minus a bank of cylinder then it will indeed be revving to 8700rpm to produce the 452hp. But of more interest to me is the torque characteristics of the LP560 engine, according to Lamborghini it's 540Nm @ 6500rpm, that M5 high and it's a peaky engine much like the M3. Using your formula that would the RS5 a torque figure of 435Nm at similar revs which would be unacceptable to me.

It's all sounding like another M3 only with awd, it will be a cracker car, just not for me by the sounds of it.

P.S.

What's the chances of it using a larger capacity engine than before, maybe a 4.4 or 4.5L V8, then there wouldn't be the same need for revs and torque could be more evenly spread.
+1 on what you said.

Regarding capacity, I would agree here but looking at that spreadsheet it seems to be 4.2l. But then again, I remember looking at the spreadsheet earlier and seen this:

Quote:
R8
5.2FSI 386 kW (525k)
R8 Spyder
5.2FSI 386 kW (525k)
R8 Spyder
4.2FSI 386 kW (525k)
Clearly the 4.2FSI of the R8 Spyder should have 420bhp and not over 500bhp!

Quote:
Originally Posted by OBI_agent View Post
Hmmm.....I took a look at the file.....did you read that the new S7 will be sporting a 4.0 V8 TFSI rated at 394k(394hp) ? I hope it's turbocharged but only time will tell if it's TT or SC induction. And also, I was hoping for this engine to make it to the RS4/RS5 but oh well....we gotto to do with a damn highly rated high revving V8
D
I noticed it and I think it's supercharged. The reason for it is that Audi have released the 3.0TFSi for the S4 and the A6, but the A6 has only has 290bhp compared to S4's 333bhp.

I notice that the A7 has a 3.0TFSi with 300bhp, which I think is an improved A6 engine. Therefore I think with the S7 has a 4.0TFSi (supercharged) engine. Also, we notice supercharged V6's in other "S" models like the S4 and S5.
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      01-21-2009, 10:51 AM   #52
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Quote:
Originally Posted by hks786 View Post
I noticed it and I think it's supercharged. The reason for it is that Audi have released the 3.0TFSi for the S4 and the A6, but the A6 has only has 290bhp compared to S4's 333bhp.

I notice that the A7 has a 3.0TFSi with 300bhp, which I think is an improved A6 engine. Therefore I think with the S7 has a 4.0TFSi (supercharged) engine. Also, we notice supercharged V6's in other "S" models like the S4 and S5.
I hope the 4.0TFSI V8 is twin turbo as many sources are indicating towards it. Turbo's being used are suppose to make sense because then this engine will compete with BMW's upcoming twin turbo V8.
And I also read that this turbo'd V8 will replace the V10's found in S6 and S8.
Anyway, Audi can still surprise us as they did with the S4's supercharged V6.
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      01-21-2009, 02:22 PM   #53
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^^^

I thought that was a very interesting point you made there! However, the S6 and S8 produce 435bhp and 450bhp respectively. This new V8TFSi produces 395bhp which is a big difference. Then again, the new 3.0TFSi going into the S5 is ~30bhp less powerful than the 4.2 V8.

Hmmm...but let's not forget the facelift A6 has the 3.0TFSi producing 290bhp yet the S4 uses the same engine and achieves 333bhp. Perhaps using the same engine, Audi will give it more power for the S6/S8 which clearly need it since they are heavier than the S7.

Even more importantly, I think Audi are going to make the new A6 and A8 lighter! We should see the new A8 at the end of 2009 according to this spreadsheet.

You are right about Audi being unpredictable It's tricky trying to find out what they are doing. I've lost a source or two that would have been able to give info. Ah well...
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      01-22-2009, 09:13 AM   #54
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^^^^
+1 on everything.
About the 4.0TFSI V8, no matter what type of forced induction is used on this engine, it will be easy to extract the extra 50 or so hp needed for it to be competitive on an S6 or S8. Unlike a NA engine, Audi will also be able to increase the torque in a vast amount or make it more broader.
And looking at the difference between the engines (3.0TFSI V6) in a S4/S5 and a normal A6, the hp has been increased by around 15%.(290hp vs 333hp) So if you take the same percentage increase (15%) and put it on the upcoming 4.0TFSI V8 rated at 394hp, you get a net of around 450hp.

And I won't be worried about the performance comparing this 4.0TFSI with the 5.2 V10. For e.g:
Just look at the new S4 (B8) already trouncing the old S4(B7) in a straightline even though it's 7hp down

And as you said and I have read articles on it before, the upcoming A6 and A8 will be lighter. So that will definitely help in acceleration and emissions.
Finally, I dont like Audi's unpredictability but I hope they come up with a great FI V8
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      01-22-2009, 09:27 AM   #55
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it looks fast....and huge! I think the front could have been worked a little better tho.
+1. the front looks awkward to me.
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