Audi S2 Rosso Corsa TimeAttack

[S2_Rennfahr]

Hello!
Not new in here. I've been a lurker in here for some years and had a project thread but I guess it's better to put it in here.

The car is a 1991 S2 Coupe.
Bought the empty shell in 2007.The car is rebuilt from scratch, because the car was bought from Sweden as a donor car for another project from an earlier owner. So we tought we could "save" it from the scrapyard to make it a fast trackday car in the future.
Car got completely dismantled and sandblasted. Got rid of all unneccesary stuff. Roll cage welded in. Exhaust tunnel welded in,making it ready for a bigger and less restrictive downpipe.

[S2_Rennfahr]

H&R Rennen NR/NS coilovers.
Finally the car was "rolling".

[S2_Rennfahr]

Engine was finished up. Homemade porting, and a shitload of money on the valvetrain.
CP-Service 321L manifold, and a PT6266 turbo. Engine put in to make things fit on the engine bay.
Cooling for the water was moved in the back for the weight distrubution,and to get clear of heat soaking. Griffin radiator with 2x SPAL fans and alu.shrouding.
The rest of the cage was welded. And then we decided to make ourselves a set of sill stands to make it easier to work with when jacked up.

[S2_Rennfahr]

The car was then dismantled again, and painted underneath, engine bay, and inside.

[S2_Rennfahr]

S6 V8 CMG gearbox with custom made CAE shifting linkage.

[S2_Rennfahr]

Assembling...

[S2_Rennfahr]

Fuel system is made up from ATL Fuel Cell with 2x 220ltr 'Walbro' pumps who feeds the swirl pot, and a Fuelab Prodigy to take care of the rest.
ASNU injectors.

[S2_Rennfahr]

Welded up a new water outlet manifold. AAN intake cut out service ports,and rewelded.
Sachs 707 SRE Clutch, with 4-puch sinter disc.

[S2_Rennfahr]

Car was finished up, CAE shifter assembled and the car was back on the wheels again. Assembled with Porsche RS2 calipers in front and STD S2 at the rear.
Ready for the dyno and the engine put out 634whp on 2.25 bar of boost.

[S2_Rennfahr]

Drove the car a year on some trackdays, and we tought it maybe neeeded some fresh paint.
And maybe a bit wider track. New Team Dynamics 9x17s was bought to make the Yokohama A005s fit.
Bought a set of Audi quattro Grp.4 front arches from CoolWheels.

[S2_Rennfahr]

Freshly painted and just made ready in time for the next trackday.Wheels aligned and hit the Rudskogen track.
Intake blew up on the long straight on 2.2 bars of boost. Almost shat in the pants.

[SteveH]

Nice update and pics

[anthonys2]

Nice build thread hope your car is ok after blow up on straight??

[S2_Rennfahr]

Thanks!
The intake was welded by some locals,and assembled back a couple of hours later.So it was ready the next day.
Car has been running summer and winter, icetracks with studded tyres are just awesome.

[S2_Rennfahr]

After last years trip to the icetracks the car got a bit of beating. So upgrades was on the menu before the spring arrived.
Upgraded from 3.5" to 4" downpipe,and moved the wastegate pipe further back to reduce the back-pressure.
Also made new gearbox mounts.