Hey Steve,

It was mostly a wet track, only partially dry and the Ring is very tricky in the wet. Now we also had some leaves on the track, some dry parts mixed with wet parts, so even more tricky..
Performance was on nobody's mind really ;)
Learned a lot about better lines though and that's what I came for.

Greets,
Walter

http://farm5.static.flickr.com/4088/...a36d55c0_b.jpg

http://farm5.static.flickr.com/4083/...70164945_b.jpg

http://trackpix.net/gen/ishow.php?pi...2/IMG_0190.jpg

http://trackpix.net/gen/ishow.php?pi...2/IMG_0192.jpg

http://trackpix.net/gen/ishow.php?pi...2/IMG_0386.jpg

http://farm5.static.flickr.com/4108/...0f29dbe2_b.jpg

http://danpy.autofans.nl/images/even...g/IMG_0953.JPG

http://lh6.ggpht.com/_OTc6Yfslc6k/TO...4/IMG_0911.jpg

http://lh5.ggpht.com/_OTc6Yfslc6k/TO...0/IMG_1071.jpg

We drive by in the instruction laps at ~0:50 and 2:50 min ;)

http://vimeo.com/16812576

looks great wally :)

cheers andy

Wallly, it seems to me you had a lot of fun. Tell us the truth now, did you "play" with any of the gt3's?

I have said it again and will do so now: the Nurburgring is not about your car or the power you have and lack of. It really is about knowing the track or not and driver ability.
An experienced Ringdriver with half my power to weight ratio drives around me so to speak.
That day the track was partially wet and dry-ish and on some parts it rained a bit, so what do you think happens with people that ' play' with other cars to show off their power: yes, they hit the amco and pay thousands for repairs, at best. Worst case is you kill yourself or somebody else or even worse: the guy sitting beside me in the passenger seat and I can explain his wife and kids...
That doesn;t mean I drive there as a pussy. We experienced a rear end break-out and some more tire slippage and I caught both, but you don't play with any other cars there, really.
Not meaning to sound annoyed, but you should really experience it there, then you will have more respect for the track, trust me ;)

I understand what you mean as I also compete in FIA historic rallies as a co-driver(sporting). I am just joking around.

Alright then, sorry I took it so seriously ;)

As 8 cars were more or less seriously damaged that day (even during the very slow pace training laps as you saw on the first video), I take these well meant comments sometimes too seriously as you can see :o

No worries my friend.

Looks like it was a great day. Any day you can drive the ring with an instructor and learn the track and your car is a good day.

I love this thread, and I love the most recent account of driving at this world famous track. The above quote almost got me in trouble as I am not supposed to bust out laughing while at work. Everything here is grimly serious. ;)

Great stuff as usual.

+1

TSAF: :cool:

Oasis: :D sorry my language almost got you into trouble. I only just got it :lmao:

Great pics Wally! Sounds like a great experience! The ring is no playground - that´s for sure! Going through such as course is worth it and actively driving the proper line teaches you the track better than anything else.I went through a week of motorcycle race school in Willow Springs when I was stationed at Edwards AFB,CA. which is right next to Willow Springs basically.I learned more that week than all the years of experience before and after.Most accidents occur when people think they can "Vettel around around the ring" after a few sessions of Gran Turismo on the play station and end up killing themselves..Never lose respect no matter what track you´re on - I learned the hard way after crashing the bike at over 200km/h - luckily I didn´t break anything but my shoulder still gives me trouble every now and then.

Maybe this could be of use/interest?
Although you probably don't want to switch your air-air intercooler for a water-air one and there isn't as much space available above the transmission compared to a 911

http://www.europeancarweb.com/featur...ochargers.html

Did you know that the 9ff-boss changed the water-air chargecooler in favour of an air-air intercooler because...wait for it.... the air-air ones flowed and cooled better?
That was in one of his 1200hp record setting 911's ;)

But really, I have no air intake temp problems or gains to be had in that department. IAT stays really low, even at 24psi boost ;-)

Blue thunder explained it once as well, and air-air one is more efficient (for the same size/space) as a water-air one.

1.65 bar sounds good! ;)

They are really for two different kinds of situation. For hard driving on sustained boost an air/air would be better, for normal more varied driving a water/air would be better. The water has a MUCH higher conductivity and thermal capacity so it absorbs the peak temperatures much better, the only problem then is that you are then on to the next limiting factor which is the volume of water and how effectively you can cool that. Also there is the additional weight to factor in for the air/water system but it also has the benefits of generally having shorter pipework required so slightly better response.

At the end of the day all installations like ours are bespoke, as are the builder's requirements...

Wally has obviously got his to work well with short pipework so is definitely on to a winning solution!

Hi

An advantage for drags etc with a air 2 water IC is that you can fit a ice box in the system to really take the heat out of the cooling water, not really practical on road car.

On a road car you cant stay on boost for very long until you have to back off, so a air 2 water IC will smooth out the spikes in intake temps, were Wallys air 2 air IC is a winner for him is that when the motor needs the cooler intake temps his car is usually travelling at constant high speeds with lots of air flow over the IC.

Steve

Yeah, very true Steve, but probably because of the sheer size of my air-air intercooler, I even see intake temps going down the short runs of the 1/4 mile.
Right on the starting line, after waiting and idling in hot summer periods, temps do climb however, but the water/meth injection usually takes care of those elevated temps. Temps never got over 40-45 Celcius IAT after an hour or more of standing still, heatsoaking while waiting after hot 1/4 mile runs, (the worst possible conditions therefore).
The alternative of Armin Klein (horizontal air-air intercoolers inside the engine compartment with fans under both sides) is more subtle though and seems to work very well for him too ;)

I´m not really convinced that an air-air IC is more efficient than a water-air IC.Water combined with antifreeze or alcohol is a better cool medium by itself than air,especially if it is an independant system with its own cooler for the water.I´d like to see a comparison of the two on the same car with identical boost settings and then record the temp difference.The efficiency of an air-air IC is dependant on the surrounding atmospheric temperature more so than a water cooled IC.

I think this is the best pic from 12 november :)

http://lh4.ggpht.com/_OTc6Yfslc6k/TO...I/IMG_1326.jpg

Ohhh nice pic!! Thanks - another one for my Wally folder! :D Professional,high quality pics as usual!

haha you have a "Wally" folder too? Thought I was the only one :P

LOL, yeah I´ve been following the developements of this car for quite a few years.It´s been really interesting to see the continuos changes and rise in power along with the setbacks. A real car story and a lot of things to talk about,I really enjoy the updates.Almost feel like a groupie..LOL :D

Thanks guys, this thread here is also my own sort-of blog or diary so you will.

Hi,

I've just found this more complete post of yours (compared to the french german look forums) and I must say, I'm sooo impressed by the work done and the way the car looks... The only thing I don't adore on your car is the steering wheel... Otherwise, its just soo balanced and somehow discreet (by looks) for the power output...

Knowing my daily beetle is a convertible, I'm somehow limited in crazyness but I also own a 74 that could very well take a turn for the worst (best?) and become a race bug in the spirit of yours... Thanks for the temptation, I was going to rebuild it to factory specs and sell it... Now I'm not sure...

Good luck for the 450 HP target you must have somewhere in your mind...

Seb

Thanks Sebastian!
The steering wheel is somewhat of a poke to pre-'73 911 owners as its the exact model of a pre-73 911 wheel, but with a Wolfsburg logo in it :D
I had a GSR/late convertible steering wheel before and even that felt slightly better in your hands. So, I might just replace it some day, but not yet as this wheel kinda has grown on me ;)

Glad if I just made you doubt selling your sedan bug. You know its a fun ride and can just go as cray as you want :)
:D

Started building the twin scroll header out of the exiting one:

http://i174.photobucket.com/albums/w...1.jpg~original

Unfortunately 1 and 3 (and 2 and 4) are positioned not beside each other but diagonal (sp?) across... so the primaries have to be adapted some more.
Plenty to do before the new turbo is completely connected.

Hi,

Is this an illusion from the picture or will this header never fit under the bodywork?

Seb

-> Illusion: this header already did fit under there, I just cut it off behind the collector ;)
My 'remodelling' might give a little more room too. Thats very welcome as it is very tight now (G50 gearbox made the engine go back ~3-4 (?) cm) indeed.

Older pic:
http://i174.photobucket.com/albums/w...8.jpg~original

I bet that was quite daunting chopping of the collector - the point of no return!

Could you do me a favour please - measure the ID of the single pipe coming from the collector. I need to order a cone to match my new silencers with that pipe and mine is currently wrapped in exhaust wrap as well as being covered with masking sheets as I am painting the engine lid hinge panel on my bus

Cheers
Paul

Indeed it was!
I have hesitated many times doing this and contemplating wheather it was possible to rearrange the entire primaries backwards coming together under the flywheel/tranny, but I think there is just too little room if you want to keep the underside of the car level with the T4 sump...


Pipe outer diameter is 42mm, wall is 1,5mm, inner is therefore 39mm and confirmed by measuring, although at the collector itself I measured 40mm ID.

I agree, I don't think it would be possible to have them going backwards and stay level with the sump.

I'd like to cut and move slightly backwards the pipe that runs near the pulley as it is very close, but I think it will be quite difficult to do nicely without remaking that section.

Thanks for the measurement, though I wanted the one at the other end of the collector. I think it is 54mm OD but I am not certain.

Cheers
Paul

Problem with that part is that it is the 180 degree section that curves right behind the rear apron. If you move it further away from the pulley, it gets close to the apron... You may get away with that, but I have less room as you know ;)
Sorry...but you're correct. That part is OD 54mm.

Made some nice progress this weekend:

http://i174.photobucket.com/albums/w...turbo002-1.jpg

Trial fitting the too big of a turbo.
Looks like it might even sort-of fit :D Be aware that I have a bit more room there as my engine is moved a few cm further backards.
The 4" (!..) air inlet will however collide with the Cup strebe so will need to make s/th for that, for which I already have an idea :)

http://i174.photobucket.com/albums/w...erturbo001.jpg

http://i174.photobucket.com/albums/w...erturbo003.jpg

Looks good Wally! I see space is now even more limited...
If you don´t need your BAS header,I´ll buy it from you ;) Or did you cut it up to make this one?

Yes, I hoped the pictured showed that..:o

you will be punished by the aircooled gods for cutting up a BAS header like that! I hate you just a little right now :P

Don´t worry,Wally knows what he´s doing...I think...:D Wally, are you going to have a collector before the turbo or will the pipes remain seperate up to the flange?

I dunno, but surely hope so :D
NOooo, with an additional collector before the turbo, I would totally KILL the twin-scroll principle/advantage/idea!!
So, the pipes will remain seperate. I just have to hammer them both into a rectangle at the end :rolleyes: