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 » Mon Aug 24, 2020 10:54 am

Hi

The V10 from the 4S R8 has new ignition coils and new ignition plugs.

These can only be better than the old parts.

Image

Tom

Speedr8
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Re: light and strong Audi R8 V8

Post by Speedr8 » Sat Sep 12, 2020 1:19 pm

Hi

After replacing the wishbones, the question of the wheel load arises in detail.

I think that looks good, slightly higher in the back right and good.

Image

Tom

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FaisalJ
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Re: light and strong Audi R8 V8

Post by FaisalJ » Sat Sep 12, 2020 2:09 pm

1340kg. What weight did it start at?


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2007 RS4 B7 Avant
Phantom Black | Black Optics | MRC Stage 2 | JC Weldfab Exhaust | KW V3 coilovers | H&R ARBs | 20" Ispiri ISR-8 | Titanium wing mirrors | Driving Passion Diffuser | CF Air Intake | Manifold deflap | Alcantara/leather retrim | TT RS Steering Wheel | Pioneer Apple Carplay HU, JL amp and sub, Focal components | Clear Headlight Lenses, Black Internals, 6000K Bulbs | Trups LEDs | LED Tail lights |

Speedr8
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Re: light and strong Audi R8 V8

Post by Speedr8 » Sat Sep 12, 2020 2:33 pm

Hi

1640 Kg without driver full tank.

The weight in the picture is with driver and half full tank.

Tom

Speedr8
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Re: light and strong Audi R8 V8

Post by Speedr8 » Sun Sep 13, 2020 4:10 pm

Hi

There were already flooded engine control units because too much was cleaned with the high-pressure cleaner.
Here is the solution with a rubber seal as a rain gutter for water.
Place shown with red arrow in the picture where the water can penetrate the coupe and the solution in green.

Image

Tom

Speedr8
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Re: light and strong Audi R8 V8

Post by Speedr8 » Sun Sep 13, 2020 5:36 pm

Hi

And now something that the RS4 B7 drivers might be interested in.

On the R8 V8, the intake valves were switched to a thin shaft from 2010. See picture 1.

The advantage here is that there is less carbon on the valves due to the higher temperature.
The further advantage is a better passage and thus more power.

Image

Audi made the real highlight in the development of the V10 in the 4S, here they have taken a smaller
exhaust valve, which is 1mm smaller and the plug and play with the old V8 and V10 as well as the RS4 B7 V8.

The engines reach their maximum speed in less time, 20% faster than the old V10.
Exhaust valve old 28mm, exhaust valve new 27mm

Awesome, isn't it ?

Image

Tom

mongo
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Location: Scotland

Re: light and strong Audi R8 V8

Post by mongo » Wed Sep 16, 2020 11:04 pm

interesting, are you taking the cylinder heads off and getting the valve seats cut/machined to the new exhaust valves? Or are you re-lapping the valves back in?

Speedr8
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Re: light and strong Audi R8 V8

Post by Speedr8 » Thu Sep 17, 2020 6:11 am

Hi

The new valves have the same seat angle as the installed valves. The new valves, lapping / grinding done.

Tom

Speedr8
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Re: light and strong Audi R8 V8

Post by Speedr8 » Tue Oct 13, 2020 1:00 pm

Hi

Here is something about air filters made by an automobile club. Unfortunately for you in German, but can be read easily with a translation machine.
It is shocking how bad the foam filters perform in terms of dirt permeability. My finding coincides with this test.

https://www.adac.de/rund-ums-fahrzeug/a ... ortfilter/

Tom

Speedr8
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Re: light and strong Audi R8 V8

Post by Speedr8 » Tue Dec 01, 2020 11:09 am

Hi

I made the decision to dispose of the air conditioning this winter.
I haven't used the air conditioning for years and thus the weight of the R8 is reduced by 10-12 kg and the loss of
power due to the air conditioning compressor, which is always idling, is eliminated.

Image


Tom

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Covkiller
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Re: light and strong Audi R8 V8

Post by Covkiller » Tue Dec 01, 2020 11:23 am

Oo Tom some things are just worth keeping :biggrin2:
RS4 B7, Mugello Blue, K&W V3 & HR ARBs, set up by Centre Gravity, Milltek Valved Non Res & cat bypass pipes, BMC air filter, braided hoses, DOT 5.1, Terraclean, MRC Full Carbon Clean, MRC remap 448PS 477NM, 20" S7 alloys with 4mm spacers & Hawke spigots 66.6 > 57.1, AP Racing front discs. Sold Sept 2019. Now rocking an F80 M3

Speedr8
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Re: light and strong Audi R8 V8

Post by Speedr8 » Mon Dec 21, 2020 5:07 pm

Hi

Removing the air conditioning compressor is too much work.
Remains where he is.

The V8 has parts that can be replaced by lightweight V10 parts.

There are the hoses on the cooling water box, inlet and outlet made of aluminum from the V10.

V10
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V10
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V8
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The surface on the inlet manifold for the TB was also placed vertically, in series the are slightly inclined forward.

Series
Image

New
Image

Tom

Speedr8
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Posts: 258
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Re: light and strong Audi R8 V8

Post by Speedr8 » Wed Jan 06, 2021 5:44 pm

Hi

New year and let's go, further modify.
I've heard that filters with a foam cover should be better than series and I'm interested in whether they're better than my big K&N.
The test with a vacuum cleaner was 1 to 1, both of which had a pressure of 0.01 bar generated.

Image

Tom

Speedr8
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Joined: Fri Feb 21, 2014 6:28 pm

Re: light and strong Audi R8 V8

Post by Speedr8 » Sun Jan 31, 2021 2:34 pm

Hi

Shortly before the start of the season there is a new diffuser.

The old diffuser from 2013 was too aggressive for me and the current one is optically very close to the GT diffuser.

New
Image

old
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Tom

Speedr8
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Posts: 258
Joined: Fri Feb 21, 2014 6:28 pm

Re: light and strong Audi R8 V8

Post by Speedr8 » Sun Feb 21, 2021 12:56 pm

Hi

Let's see if this carbon / aluminum anti roll bar can be installed.
3.17 kg is its weight for the front axle.

Image

Tom

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