S2 with IMSA engine.

[martinjs]

Anyone know who's car this is, or have any more info/pics of it?
http://video.google.com/videoplay?do...2196&q=audi+s2
http://video.google.com/videoplay?do...7794&q=audi+s2

[doof]

i believe the guys name is martin hes from sweden and he owns a whole assortment of cool audis. there is more info on that car at audisentrum

[Wolfgang]

it´s looking great, some more details about the engine parts would be very interesting.

but also i can´t imagine that this engine could work very long, all parts from these engine are very race-optimized..

[AndersS2]

i believe the guys name is martin hes from sweden and he owns a whole assortment of cool audis. there is more info on that car at audisentrum

No, the owners name is Joern from Norway, (he had a red sportquattro imported from ireland earlier). The car is a former Rallycar group A buildt by Konrad schmidt motorpsort Germany, and have been stripped down to be completly rebuildt with the original IMSA engine and s1 drivetrain.

Engine data:

Audi 2,1 ltr
705hk / 730 nm @ 1,9bar
BORE 81mm STROKE 85 mm Comp ratio 7.5 / 1
Original IMSA KKK 3476 ,comp wheel OD=87mm, ID= 66 mm,( equal to Turbonetic T66 ), kapabel for ca 750 hk.
Autronic SM2, w/ign expander #5, 2 x CDI 500R, 5 x Mercury 2.0 F1 racing coils, 10 x Siemens 650 cc/min, 5 bar fuelpressure static- 1:1 fuel pressure regulator(øker bensintrykk like mye som ladetrykk)
change the timingbelt every 20hour of driving.

Measured in this engine: @1mm valvelift & 0mm lifter clearance
IN open before TDC 15° @12,0 mmMax lift occur at 110¤ ATDC
IN close after BDC 55° Lift at TDC is 2,7 mm
EX open before BDC 55° 11,0 mm Max lift occur at 70¤ ABDC
EX close after TDC 15° Lift at TDC is 2,9 mm

EXHAUST Duration at 1 mm lift is 250 degrees
INTAKE Duration at 1 mm lift is 250 degrees

xls sheet of the dynorun

Read more in norwegian here.
Pictures here

2 videos from ice race here and here








Some of the engine spec might not be correct now as this was around christmas times 2005/2006

cheers,

[terrybullwon]

Any more on this?

[terrybullwon]

bump

[AndersS2]

I belive it was sold to another guy from norway. Since then its been quiet.

[Audi imsa racing]

I belive it was sold to another guy from norway. Since then its been quiet.

I might be wrong but I think the new owner had a little mishap with the engine, something got wrecked

[breitling]

I might be wrong but I think the new owner had a little mishap with the engine, something got wrecked

Nope, youre wrong I know the owner.. he has several special Audis, and the engine will soon appear on a track near you in a very special Audi.
Right where it belongs..

[Audi imsa racing]

Nope, youre wrong I know the owner.. he has several special Audis, and the engine will soon appear on a track near you in a very special Audi.
Right where it belongs..

I must say I am glad I was wrong..

[rash]

can anybody place a link for sheet of the dynorun without need of membership for the page??

xls sheet of the dynorun

[20vQC]

what kind of head is that? 4valves or 5 per cyl?

[driftin jo]

what kind of head is that? 4valves or 5 per cyl?

The IMSA head has 4 valves per cylinder but is a lot different to a normal 20v head , amongst other things it has geared cam wheels and 10 inlet ports, 1 for each valve, instead of the normal 5 .

[20vQC]

The IMSA head has 4 valves per cylinder but is a lot different to a normal 20v head , amongst other things it has geared cam wheels and 10 inlet ports, 1 for each valve, instead of the normal 5 .

Uhh! thanks!!!

[EspenW]

Interesting dynosheet indeed. Runs quite lean, 13+ on E85.
Something is funky with the horsepower vs. torque numbers. At low rpm, the power is overstated, and they are understated at high rpm.
If it really makes 630nm at 8500rpm, it makes 761ps at 8500rpm, not 701ps as listed