Project: S2 Coupe Continously upgrade

[Acidburn]

Ok cheers for the responses to that

[magarv]

I did a rough calculation/assumption on disc diameter/pistion diameter to get the right bias. I have a smaller piston diameter rear compared to front. In addition I bought an adjusting valve in case to much rear lockup. I have experienced it a few times, but I think the bias on the limit and just right I drove it 1 year with only the big 345mm front disc and stock rear, and that was not good
However I miss a better feeling with the brake pedal and a think it is due to the "small" master cylinder (from RS2) I would like to do something with that in the future...
Handbrake is hydraulic...

[Acidburn]

Have you adjusted front/rear bias at all with that setup and do you get any rear lockup?

also how you doing the handbrake with them?

[s2driveruk]

hmmm willwood calipers too, nice and light

[Rusty]

Cold feed looks great and those rear discs are mahoosive! Nice work.

[magarv]

And some brakes and coilover pics:





Old vs New rear brakes:

[magarv]

Here comes some pictures of the engine bay. Some new and some old.

[magarv]

For those interesed in the wiechers roll cage, here is some good pictures from a realy realy nice swedish coupe: (see page 39, 40 and 41)

http://www.zatzy.com/projekt/284837-racekungen-audi-s2-coupe-39.html

[magarv]

Be careful with the bottom end on a 3B with 400bhp

That's a nice little leak you got yourself!

I know 400+ hp it is on the limit and past
But I also think that it is ignition failures/missfires that is the biggest cause to "banana" rods... In my opinion you can minimize the risk with a proper map and good ignition system. I have driven 25000km with this setup and the bottom has done 240 000km
I think it holds togheter because of the good map and the MSD ignition system that keeps missfires and "spark hoops" to a minimum. (and in addition correct "narrow" rotor and good ignition wires)

Anyway I am not to worried, I have a few "spareparts" laying around

New block, washed, painted, machined and ready for assembly:




New head, machined and overhauled and some parts for a proper intake manifold:

[4WheelDrifter]

Thanks for sharing this with us Magarv. What colour is your car? It looks good.
Hopefully we'll meet at the Nordschleife sometime. I wouldn't mind a pax lap in that.
Thanks for the pictures of the roll cage too. I'd be interested in seeing a boot shot too. I'm pretty close to putting a cage in mine, but I'm not sure what it would be like to live with every day. I would love to sort out the bendiness of the Coupé chassis though.

[Acidburn]

cheers for the pictures/specs/stories above, look forward to seeing engine/boot shots

[Rusty]

The website gives lots of options to think about. I think I'd go for a half cage (roll bar) so that I wasn't worried about headbutting a cage all the time (sunroof makes things rather tight anyway) but who knows. Full cage requires some proper seats to be fitted over and above the Recaro Speed...

[anton]

8.43 with a boost leak
that link to roll cage place is good too cheers, i will be fitting a cage in time. like the wheels too, have a pik of a red car in the states with a set of them, was thinking about getting a set, bit too commen now with two ppl who have them
any chance of a pik at the engine bay and from the boot, interested in some more cage shots, looks like a really nice kit

Ant

[Rusty]

Be careful with the bottom end on a 3B with 400bhp

That's a nice little leak you got yourself!

[magarv]

Cheers for the writeup, seems like a beast! Explains why the 'ring laps you'd posted yesterday were a littel faster than a standard car! I'd say that my coupe is capable of a 9m BTG on a clear track.

Looks mean on those wheels and nice and low, are you running road or track tyres?

How do you find the H&R coilovers? What spring rates did you go for?

What sort of power & torque is it running on the T04 setup? Is it laggy at all?

Please can you post some shots of the interior too Interested in the cage :mischeif:

It is not exactly standard anymore...

As I mentioned in the last post I run Toyo R888 tires. I bougth the coilovers through a friend that have some some good contacts. I dont remember the actual spring rates, but I can provide spring part no (and full kit no) I think they are based on the standard H&R kit for S2 Coupe, but with aproximatly 40% stiffer springs.

I am quite satisfied with the T04 setup, and I dont think it is too laggy. I am currently using a small exhaust housing (0,50 a/r) and togheter with the 6 speed tranny it works well. But the turbo is not the ideal turbo for my setup, I bougth it because I have an upgrade in the back of my head
The compressor side is capable of 550+ hp and I am now in the 400+ somewhere. (stock bottom end)

I also think that the 'netics turbos are very robust and can handle a lot of beating. In the video in my signature a had a big boost leakage and still the turbo survived several laps around the ring.


G-tech measurment done with my old 01A 5 speed tranny and 1,5 bar boost in 3. gear
I think 350 Wheel hp is on the limit, or a bit over, what the stock bottom end can handle




Here is the hose that I discovered right after the 8.43 lap