Engine and heat dissipation

5.0 V10 50v biturbo - 571 bhp
cammmy
2nd Gear
Posts: 247
Joined: Tue Dec 10, 2019 3:32 pm

Re: Engine and heat dissipation

Post by cammmy » Tue Jun 09, 2020 4:34 pm

Okay cool, I might get my hands on another one and see if there's something that's both functional and doesn't look like crap.

It may be possible to do something that doesn't let much water in. I would be using vents rather than scoops, so driving in the rain wouldn't force water in and as long as they are slightly above the bonnet, water should go around them when parked in the rain.

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IanH755
Top Gear
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Joined: Thu Jan 02, 2014 12:50 pm
Location: Stoke and Norfolk

Re: Engine and heat dissipation

Post by IanH755 » Tue Jun 09, 2020 4:49 pm

RS6 uses A6 bonnet - Yes thats right, the part number for the bonnet is "4F0 823 029 F"and it's a stock A6 item. The last letter "A to F" denotes the age range of the car and, as the A6 was built in 2004 (bonnets ending in "A"), I'd make sure that you get the "F" lettered version, just to be safe.

Item 1 - http://www.oemepc.com/audi/part_single/ ... d/0/lang/e

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***OLD*** Daytona C5 RS6 Avant - MRC'd - 500HP & 820NM (PistonHeads Link).

***NEW*** Daytona C6 RS6 Avant - MRC'd - 955HP & 1200NM (PistonHeads Link)

cammmy
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Re: Engine and heat dissipation

Post by cammmy » Wed Jun 10, 2020 9:37 am

Nice one, thanks Ian

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andy_HK
Neutral
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Joined: Tue Nov 26, 2013 3:32 pm
Location: Hong Kong

Re: Engine and heat dissipation

Post by andy_HK » Thu Jun 11, 2020 3:05 am

Heat dissipation is a problem we face over here (Hong Kong) where, during the summer months, the temperature doesn't drop below 25C during the night with highs between 30-35 during the day - all at almost 100% humidity - in 8 years of owning the car I've seen the ambient temperature over 40C on more than a few occasions.
The real problem, in my opinion, is there just no room in the engine compartment for air flow - and with our busy roads over here we don't usually get much of a chance to stretch her legs and get any air flow through the car...this probably accounts for why I have more problems with the RS than most on this chat forum - currently the car is in the garage again to replace the water lines and the main, auxiliary and addition lower radiators...The problem is the plastic connectors on the main and the plastic top and bottom sections of the auxiliary which I attribute to heat...
I don't have a solution for this problem but, as another anecdote, when Trups rebuilt my headlights (great service and results by the way) he said my wires were frayed and the only car he'd come across with the same problem was one from Singapore.
Personally I think you won't experience any real major problems in the UK environment - but its food for thought.
Lastly - My a/c in the RS6 really struggles out here, never really getting cold irrespective of the setting (unlike my S3 which is great) - do you guys in the UK have the same issue?

On the plus side - we don't have any problems with rust from salty roads!!!

Save travels....
in the garage...
Aston Martin Vanquish S Volante
RS6 V10 - 2009 miltek + - 715bhp
BMW M5 F10
Audi S3 - 2014 - daily drive
Audi A1 1.8T - 2015
A3 1.8T - wife's car
Audi TT 1.8T - 2013 - wife's other car!!
Mini Cooper - 2007
ZXR 750J2 - 1993
BMW S1000RR - 2013
CBR 1000FK 1989
CBR 1000FX 1999

cammmy
2nd Gear
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Joined: Tue Dec 10, 2019 3:32 pm

Re: Engine and heat dissipation

Post by cammmy » Thu Jun 11, 2020 11:00 am

I wonder if while your radiators are out, you could get some adhesive heat shielding on the plastics before they go back in?

c3nturi0n
3rd Gear
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Joined: Tue May 29, 2018 10:50 am

Re: Engine and heat dissipation

Post by c3nturi0n » Thu Jun 11, 2020 2:30 pm

+ i'd also suggest to check rad fans. They are prone to fail and it maybe worth looking into while the car is with the indy.

All the best!
2008 RS6 Avant (Monza Silver)
- Stage II MRC tune with gearbox (720PS/850Nm)
- MIJ Powerflow exhaust (non-res)
- H&R ARBs

Doug_RS6
3rd Gear
Posts: 302
Joined: Fri Sep 07, 2018 12:01 pm

Re: Engine and heat dissipation

Post by Doug_RS6 » Tue Jun 23, 2020 1:17 pm

You can get bonnet vents with rain trays which allow you to aim any incoming water in a preferred direction. This is how cars with OEM bonnet vents cope. Evos etc. Versus motorsport sell various ones. The down side is water potentially running between the layers of bonnet skin. I mean in theory it can creep in anyway but would be higher quantities. Best option would be some drain holes at lowest point in the inner skin and injecting cavity wax. I'm planning to get hold of a second hand bonnet and try. Downside is you're going to spend about £300 on parts to do this.

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