light and strong Audi R8 V8

Models: V10 plus, GT, GT Spyder, V8 Limited Edition, Exclusive Selection Edition, China Edition and LMX
4.2 V8 32v Naturally Aspirated - 414 bhp (2007-2011) - 424 bhp (2012-2014)
5.2 V10 40v Naturally Aspirated - 518 bhp (2012-2014) - 542 bhp (Plus 2012-2014) - 562 bhp (LMX 2012-2014)
5.2 V10 40v Naturally Aspirated - 533 bhp (2015-)
5.2 V10 40v Naturally Aspirated - 602 bhp (Plus 2015-)
Speedr8
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Re: light and strong Audi R8 V8

Post by Speedr8 » Wed Dec 10, 2014 8:33 am

Hi


The R8 V10 as also the RS5 have identical entrance and exhaust channels.
At the R8 V8 the channels are extended onto the level of the RS5 and it nothing worsens through that.

That of the RS5 only 450 PS has, is due to the ceramic catalytic converter with 600cpi and at the bad air supply behind the big Restrictor end flaps ( intake Manifold ).

All measure at the R8 V8 engine.

Exhaust manifold RS5 without catalytic converters,
Bigger Restrictor end flaps,
Bigger air mass meters housing,
Bigger air filters K&N,
Intake manifold worked on,
Exhaust system.

481 PS are engine performance with these measures.

The shown measures are the next configuration level for 500 PS.

Again bigger Restrictor end flaps,
again bigger air mass meters housing,
enlargement the entrance and exhaust of channels,
adaption of the intake manifold and separation the intake manifold's,
entrance valves with thin staff.

Tom

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Re: light and strong Audi R8 V8

Post by bam_bam » Wed Dec 10, 2014 9:57 am

Best of luck. So, how much did all of this cost?
No matter where you go, there you are.

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ChrisW
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Re: light and strong Audi R8 V8

Post by ChrisW » Wed Dec 10, 2014 10:16 am

bam_bam wrote: a) I've worked hard to become this c*ntish, it didn't just happen straight from the off. But that's my business. Don't like it, read on, there are instructions to a remedy.
That is perfectly evident.
bam_bam wrote:Haters?!?! Really? You're not really Mr. Current Affair on the memes, are you? And yes, I'm hater and I hate. How is that wrong?
Thats me on my "high horse".

It seems you're the one who's got all angles covered here, and, by the looks of things, a lot of spare time on your hands. At least we can possibly agree on one thing, me=nice you=c*nt?
Current: 07' B7 RS4 Avant
Previous: Mk2 Golf VR6 conversion, Mk2 Golf GTi 16v, Mk2 Golf 1.6 GL Auto, Mk3 Golf R32 conversion, BMW Z4 Coupe, BMW 430d, Audi S3, Defender 90 XS, Alfa Romeo 145

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SuprSi
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Re: light and strong Audi R8 V8

Post by SuprSi » Wed Dec 10, 2014 10:27 am

FFS, stop bickering.
Bam doesn't give a crap about what you or anyone else says so don't waste your time.
Last edited by SuprSi on Wed Dec 10, 2014 10:39 am, edited 1 time in total.
2003 C5 RS6 Avant Daytona Grey

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Re: light and strong Audi R8 V8

Post by bam_bam » Wed Dec 10, 2014 10:37 am

ChrisW wrote:
bam_bam wrote: a) I've worked hard to become this c*ntish, it didn't just happen straight from the off. But that's my business. Don't like it, read on, there are instructions to a remedy.
That is perfectly evident.
bam_bam wrote:Haters?!?! Really? You're not really Mr. Current Affair on the memes, are you? And yes, I'm hater and I hate. How is that wrong?
Thats me on my "high horse".

It seems you're the one who's got all angles covered here, and, by the looks of things, a lot of spare time on your hands. At least we can possibly agree on one thing, me=nice you=c*nt?
Obvious troll is obvious.
I make zero excuses for being a c-unit, nothing to hide there. However, anyone proclaiming to be 'nice' is on a high horse, whether you're nice or not is usually decided by other people. But hey, if telling people you're a nice guy is working, have at it son.

How is it you can judge someone's spare time by looking at screen? How long does it take for you to compose a post? Clearly it taxes you a little too much, best go have a nap, nanna.
No matter where you go, there you are.

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ChrisW
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Re: light and strong Audi R8 V8

Post by ChrisW » Wed Dec 10, 2014 10:53 am

Ok, you're just sounding like a gold plated nut job now. Tara.
Current: 07' B7 RS4 Avant
Previous: Mk2 Golf VR6 conversion, Mk2 Golf GTi 16v, Mk2 Golf 1.6 GL Auto, Mk3 Golf R32 conversion, BMW Z4 Coupe, BMW 430d, Audi S3, Defender 90 XS, Alfa Romeo 145

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SuprSi
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Re: light and strong Audi R8 V8

Post by SuprSi » Wed Dec 10, 2014 10:59 am

Image
2003 C5 RS6 Avant Daytona Grey

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Re: light and strong Audi R8 V8

Post by bam_bam » Wed Dec 10, 2014 11:11 am

ChrisW wrote:Ok, you're just sounding like a gold plated nut job now. Tara.
...and you're the one continuously replying to said nut job, not exactly painting yourself in a great light, huh?
Now how about you get along and add me to your foe, pretty please, with a gold-plated cherry on top.

Love, Tara.
No matter where you go, there you are.

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Re: light and strong Audi R8 V8

Post by adsgreen » Wed Dec 10, 2014 11:16 am

Speedr8 wrote:Hi
The R8 V10 as also the RS5 have identical entrance and exhaust channels.
At the R8 V8 the channels are extended onto the level of the RS5 and it nothing worsens through that.

That of the RS5 only 450 PS has, is due to the ceramic catalytic converter with 600cpi and at the bad air supply behind the big Restrictor end flaps ( intake Manifold ).

All measure at the R8 V8 engine.

Exhaust manifold RS5 without catalytic converters,
Bigger Restrictor end flaps,
Bigger air mass meters housing,
Bigger air filters K&N,
Intake manifold worked on,
Exhaust system.

481 PS are engine performance with these measures.
That kind of benefit I can see - certainly removing cats and tuning the exhaust will help a lot. If I had to guess, a majority of the gain would be there.
The shown measures are the next configuration level for 500 PS.

Again bigger Restrictor end flaps,
again bigger air mass meters housing,
enlargement the entrance and exhaust of channels,
adaption of the intake manifold and separation the intake manifold's,
entrance valves with thin staff.
But you can't expect to continue to get similar improvements by continually increasing intake paths. It's going to be diminishing returns and you will (if not already) hit a point where air velocity will drop below the 60m/sec region where things drop off dramatically. Everything you are doing would work great if you could increase the rpm limit. I suspect you'd be already over 500ps in that case.
Stock the engine is about 295 lb/ft at 8k rpm so you'd only(!) need to maintain that to 8.5k to get the figures you've got now. Maintaining torque is a lot easier than making more! Trying to get 500 ps anywhere near 8k rpm will really have to push the volemtric efficiency up and even audi managed a figure over 100% which isn't too shabby.

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Re: light and strong Audi R8 V8

Post by adsgreen » Wed Dec 10, 2014 11:20 am

RIV wrote:I'm on ads greens foe list, it's great!! I can call him a boring <beep>
And I don't have to put up with his boring replies
https://www.youtube.com/watch?v=moSFlvxnbgk

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Re: light and strong Audi R8 V8

Post by RIV » Wed Dec 10, 2014 1:19 pm

You disappoint me mr green
You just couldn't help yourself, could you

Speedr8
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Re: light and strong Audi R8 V8

Post by Speedr8 » Wed Dec 10, 2014 1:37 pm

Hi

The torque for 481 PS is with 440 NM near 7700 rpm.
A rise of the torque by +20 NM at 7700 rpm increase up the engine power to 504 PS.
Also +10NM torque would be possible and went up the engine speed on 7800 rpm > 500PS
The changes will suffice to the wanted engine performance.

Tom

adsgreen wrote:
Speedr8 wrote:Hi
The R8 V10 as also the RS5 have identical entrance and exhaust channels.
At the R8 V8 the channels are extended onto the level of the RS5 and it nothing worsens through that.

That of the RS5 only 450 PS has, is due to the ceramic catalytic converter with 600cpi and at the bad air supply behind the big Restrictor end flaps ( intake Manifold ).

All measure at the R8 V8 engine.

Exhaust manifold RS5 without catalytic converters,
Bigger Restrictor end flaps,
Bigger air mass meters housing,
Bigger air filters K&N,
Intake manifold worked on,
Exhaust system.

481 PS are engine performance with these measures.
That kind of benefit I can see - certainly removing cats and tuning the exhaust will help a lot. If I had to guess, a majority of the gain would be there.
The shown measures are the next configuration level for 500 PS.

Again bigger Restrictor end flaps,
again bigger air mass meters housing,
enlargement the entrance and exhaust of channels,
adaption of the intake manifold and separation the intake manifold's,
entrance valves with thin staff.
But you can't expect to continue to get similar improvements by continually increasing intake paths. It's going to be diminishing returns and you will (if not already) hit a point where air velocity will drop below the 60m/sec region where things drop off dramatically. Everything you are doing would work great if you could increase the rpm limit. I suspect you'd be already over 500ps in that case.
Stock the engine is about 295 lb/ft at 8k rpm so you'd only(!) need to maintain that to 8.5k to get the figures you've got now. Maintaining torque is a lot easier than making more! Trying to get 500 ps anywhere near 8k rpm will really have to push the volemtric efficiency up and even audi managed a figure over 100% which isn't too shabby.

adsgreen
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Re: light and strong Audi R8 V8

Post by adsgreen » Wed Dec 10, 2014 2:19 pm

RIV wrote:You disappoint me mr green
You just couldn't help yourself, could you
What can I say? Tapatalk get ignore lists wrong sometimes. I thought you might have something to contribute to a grown up conversation but disappointed again.
I really like the way you mentioned ages back about moving on and letting things go... But you just can't can you!

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Re: light and strong Audi R8 V8

Post by RIV » Wed Dec 10, 2014 6:15 pm

What can I say? Tapatalk get ignore lists wrong sometimes. I thought you might have something to contribute to a grown up conversation but disappointed again.
I really like the way you mentioned ages back about moving on and letting things go... But you just can't can you!
Ok mr boring I'm not interested, in all that
I'm interested to see what you've built engine wise in the past, you give so much advise you must have something to show us??

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Re: light and strong Audi R8 V8

Post by Speedr8 » Tue Dec 16, 2014 10:12 am

Hi

Series intake manifold channel with end flap
Image


Image

Finish
Image


Tom

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