My 1993 urRS4 known as Da Green Monstah...
Discussion
A couple of guys have asked for da specs on my car. First off I've owned the car since new and started modifying it on day one. Since this car is so far out there, it has a lot of one-off parts that have been custom made. Its basically an Audi I-5 AAN 20 valve that has a 92.8mm crank and a slight bore to 83mm for a total of 2.51 liters. Its got a custom equal length, firing order sequenced, thick walled, stainless steel, tubular exhaust manifold. It runs 034 IIc EMS and Injector Dynamics 2000cc injectors wit a Comp CT43 billet wheel ceramic ball bearing turbo. This setup has pulled 755hp/710ft/lbs at the wheels with 36 lbs of boost and that was before the billet wheel was added. At 30 lbs with the billet wheel it started blowing head gaskets. Its got more grunt at 30 lbs than it did at 36 lbs. There's a head gasket fix coming from Sweden that should be here in a few months. For now I've got to dial it back to 26 lbs and hang on! Here's the build sheet:
ENGINE MODIFICATIONS
Big Valve Big Cam Head (BVBCH) ported polished Swain coated and flowed with race valve grind, 1mm larger titanium intake and exhaust valves, custom ground and timing adjustable S-Line Motorsport intake and exhaust cams with 034 EFI Adjustable Cam Gear Pulley, 034 60-2 crank trigger, port matched Wagner intake manifold that's ported & polished inside and out, 034 Idle Air Motor Kit, custom solid lifters, heavy duty valve springs, titanium retainers, steel head gasket, ARP head studs and retainers, 2000cc @ 3.0 bar Injector Dynamics fuel injectors, 034 fuel rail, 034 Big Bore 70mm Throttle Body, Fuelab adjustable fuel pressure regulator with fuel pressure gauge, SX Performance 18203(Da BEEG One) external fuel pump and Fuelab inline filters 1 before & 1 after da pump with custom -10 SS solid fuel line that enters the engine bay on da cool side, S-Line Motorsport equal length and firing order sequenced prototype 316L Stainless Steel tubular exhaust manifold, Tial Sport V44 Wastegate, custom 3 1/2” SS downpipe and Magnaflow exhaust that splits into twin 3” Magnaflow 3” in and dual 2½” out mufflers with polished tips(Twin Twins), Comp Turbo CT43-6768 BK billet compressor triple ceramic bb turbo good for 900hp, 105mm turbo intake with AEM air filter, custom 24”x10.5”x4” FMIC with Garrett intercooler core and modified Apikol polished end tanks, custom 3” polished aluminum pipe plumbing from turbo to throttle body, hard mounted Tial Sport Blow Off valve, custom polished aluminum radiator with custom shroud and SPAL high flow electric fan, Wiseco forged 83mm coated stroker pistons, Carrillo Titanium rods with ARP rod bolts, 92.8mm short stroker crank(2.51 liter displacement), 034EFI stand alone engine management system, S-Line Motorsport coils, Earl's 27 row(Happersized) oil cooler mounted at the stock I/C location with temp activated electric fan, NOS FMIC Serpentine Spray-Bar with polished 10lb bottle and on demand & WOT activation, custom vacuum manifold, polished valve cover, polished assorted aluminum engine bits(just about all of them).
OTHER MODIFICATIONS
Dave Stone MPSC Coil-Over Suspension with custom Koni Motorsport Dual Adjustable Shocks, Hyper Coil 500#/550# front/rear springs, and Dave Stone Spherical bearing Camber/Caster Plates, corner weighted, 28mm S6+ front sway bar, Pederhousen rear sway bar adapter kit with 28mm (Happersized+) 3 way adjustable Big Red custom HRSB, 034 Motorsport Spec motor mounts, 034 Transmission mounts, Porsche Cayenne 6 piston Monoblock Big Yellow calipers with custom 355x32mm 2-piece drilled rotors with custom hats and custom Apikol brackets, custom machined Porsche 993tt Big Yellow rear calipers with custom 314x30mm 2-piece drilled rotors, custom hats and custom brackets with Porsche Textar pads, stainless steel brake lines with Motul 600 fluid, K Sport Hydraulic Handbrake, European CRB 6-speed transmission rebuilt by Mr. Kluge with hardened spline and hardened & wide first gear, Apikol short shift kit with shortened lever, Amorosoized lead filled shift shaft, ASW Aluminum Flywheel(17 lbs lighter than stock dual mass), custom Southbend race/street clutch, Stasis Torsen Center Differential, polished Kosei K3 18x8.5 wheels with Bidgestone RE 11 255/35-18 tires, Euro headlights with relayed 100w H1 highs/4300K HID lows and clear side markers, 3 piece Euro S6 plus taillights, RS4 front and rear badges, Kamei front grill with RS2 rings, LLTek front bumper lower valance & air intake with custom grills to clear the FMIC, customized rear bumper with Twin Dual outlets, customized Sparco Milano seats with black leather outers and black Alcantara inners, full black interior from a 1996 urS6, Sparco pedals, custom dead pedal, European illuminated 6 speed shift knob, Audi Sport 3 spoke steering wheel recovered with perforated leather, Sparco 3” harness for the track.
ELECTRONICS
034EFI Stage IIc ECU, 2 single carbon fiber 2 5/8” A-pillar pods with Autometer Phantom EGT selectable for all 5 cylinders and Autometer Phantom 30 PSI Boost/Vacuum, hard wired Valentine One with remote display, Innovative wide band air/fuel ratio meter with digital readout in a carbon fiber pod on the steering wheel crown. Full custom rewiring of all engine and vehicle electricals. Alpine CDA 7998 MP3/CD Head Unit, Alpine CHA S634 6 Disc MP3/CD Player, Alpine TUAT020XM Digital Sat Receiver, MB Quart QSD 216 6.5” 3 way components for the front doors and QM 218.61Q 6.5” 2 way components for the rear doors, Focal 690 HC Polyflex 6x9 Coaxial speakers for the rear tray, Alumapro Alchemy Mx 10” subwoofer in a custom fiberglass enclosure in the trunk, JL Audio 500/1 amp for the subwoofer with a Lightning Audio 1.0 Farad Digital Capacitor, JL Audio 300/4 amp for the front and rear doors and the tray.
The last 2 pics portray what I have titled this shoot, "Bad Moon Rising"
Hap, wit dakine Moonshine not from Evahboost, Maguire
ENGINE MODIFICATIONS
Big Valve Big Cam Head (BVBCH) ported polished Swain coated and flowed with race valve grind, 1mm larger titanium intake and exhaust valves, custom ground and timing adjustable S-Line Motorsport intake and exhaust cams with 034 EFI Adjustable Cam Gear Pulley, 034 60-2 crank trigger, port matched Wagner intake manifold that's ported & polished inside and out, 034 Idle Air Motor Kit, custom solid lifters, heavy duty valve springs, titanium retainers, steel head gasket, ARP head studs and retainers, 2000cc @ 3.0 bar Injector Dynamics fuel injectors, 034 fuel rail, 034 Big Bore 70mm Throttle Body, Fuelab adjustable fuel pressure regulator with fuel pressure gauge, SX Performance 18203(Da BEEG One) external fuel pump and Fuelab inline filters 1 before & 1 after da pump with custom -10 SS solid fuel line that enters the engine bay on da cool side, S-Line Motorsport equal length and firing order sequenced prototype 316L Stainless Steel tubular exhaust manifold, Tial Sport V44 Wastegate, custom 3 1/2” SS downpipe and Magnaflow exhaust that splits into twin 3” Magnaflow 3” in and dual 2½” out mufflers with polished tips(Twin Twins), Comp Turbo CT43-6768 BK billet compressor triple ceramic bb turbo good for 900hp, 105mm turbo intake with AEM air filter, custom 24”x10.5”x4” FMIC with Garrett intercooler core and modified Apikol polished end tanks, custom 3” polished aluminum pipe plumbing from turbo to throttle body, hard mounted Tial Sport Blow Off valve, custom polished aluminum radiator with custom shroud and SPAL high flow electric fan, Wiseco forged 83mm coated stroker pistons, Carrillo Titanium rods with ARP rod bolts, 92.8mm short stroker crank(2.51 liter displacement), 034EFI stand alone engine management system, S-Line Motorsport coils, Earl's 27 row(Happersized) oil cooler mounted at the stock I/C location with temp activated electric fan, NOS FMIC Serpentine Spray-Bar with polished 10lb bottle and on demand & WOT activation, custom vacuum manifold, polished valve cover, polished assorted aluminum engine bits(just about all of them).
OTHER MODIFICATIONS
Dave Stone MPSC Coil-Over Suspension with custom Koni Motorsport Dual Adjustable Shocks, Hyper Coil 500#/550# front/rear springs, and Dave Stone Spherical bearing Camber/Caster Plates, corner weighted, 28mm S6+ front sway bar, Pederhousen rear sway bar adapter kit with 28mm (Happersized+) 3 way adjustable Big Red custom HRSB, 034 Motorsport Spec motor mounts, 034 Transmission mounts, Porsche Cayenne 6 piston Monoblock Big Yellow calipers with custom 355x32mm 2-piece drilled rotors with custom hats and custom Apikol brackets, custom machined Porsche 993tt Big Yellow rear calipers with custom 314x30mm 2-piece drilled rotors, custom hats and custom brackets with Porsche Textar pads, stainless steel brake lines with Motul 600 fluid, K Sport Hydraulic Handbrake, European CRB 6-speed transmission rebuilt by Mr. Kluge with hardened spline and hardened & wide first gear, Apikol short shift kit with shortened lever, Amorosoized lead filled shift shaft, ASW Aluminum Flywheel(17 lbs lighter than stock dual mass), custom Southbend race/street clutch, Stasis Torsen Center Differential, polished Kosei K3 18x8.5 wheels with Bidgestone RE 11 255/35-18 tires, Euro headlights with relayed 100w H1 highs/4300K HID lows and clear side markers, 3 piece Euro S6 plus taillights, RS4 front and rear badges, Kamei front grill with RS2 rings, LLTek front bumper lower valance & air intake with custom grills to clear the FMIC, customized rear bumper with Twin Dual outlets, customized Sparco Milano seats with black leather outers and black Alcantara inners, full black interior from a 1996 urS6, Sparco pedals, custom dead pedal, European illuminated 6 speed shift knob, Audi Sport 3 spoke steering wheel recovered with perforated leather, Sparco 3” harness for the track.
ELECTRONICS
034EFI Stage IIc ECU, 2 single carbon fiber 2 5/8” A-pillar pods with Autometer Phantom EGT selectable for all 5 cylinders and Autometer Phantom 30 PSI Boost/Vacuum, hard wired Valentine One with remote display, Innovative wide band air/fuel ratio meter with digital readout in a carbon fiber pod on the steering wheel crown. Full custom rewiring of all engine and vehicle electricals. Alpine CDA 7998 MP3/CD Head Unit, Alpine CHA S634 6 Disc MP3/CD Player, Alpine TUAT020XM Digital Sat Receiver, MB Quart QSD 216 6.5” 3 way components for the front doors and QM 218.61Q 6.5” 2 way components for the rear doors, Focal 690 HC Polyflex 6x9 Coaxial speakers for the rear tray, Alumapro Alchemy Mx 10” subwoofer in a custom fiberglass enclosure in the trunk, JL Audio 500/1 amp for the subwoofer with a Lightning Audio 1.0 Farad Digital Capacitor, JL Audio 300/4 amp for the front and rear doors and the tray.
The last 2 pics portray what I have titled this shoot, "Bad Moon Rising"
Hap, wit dakine Moonshine not from Evahboost, Maguire
Edited by urs4guy on Monday 21st February 03:07
Dr G said:
Bonkers, bet it sounds good too!
It sounds absolutely sinister. The reason for the sound is the I-5 Audi configuration, the monster Comp turbo, the 3.5" exhaust from just about turbo-back, and the unique 3.5" into dual 3" rear exit. The exhaust is 3.5' until just after the rear axles and splits into dual 3.5" at the 90 degree turns. It then necks down into dual 3" sets out to the side and then mounts to 2 Magnaflow mufflers that are 3" in and dual 3" out. This video is of a preliminary run using my old 880cc injectors. We ran out of injector at 635 wheel hp. Enjoy.
http://www.youtube.com/watch?v=VeKUFlnzOZ8
Hap, wit dakine exhausting aspects not from Evahboost, Maguire
Here are a few interior pics:
Sparco pedals and custom dead pedal.
Audi 3 spoke with custom perforated leather covering. A-pillar gauges are 2 5/8" boost and EGT and center is wideband AFR.
Sparco Milano seats with custom leather/Alcantara covering. WRC type handbrake to activate rear calipers.
Function switches for:
1-Arming NOS FMIC serpentine spray bar that is activated by WOT.
2-Purge for NOS onto the same spray bar. It pre-cools the FMIC for staging at the track.
3-Launch control.
4-Turns off the wideband AFR gauge for night driving.
5-Switchable maps between high boost(up) and low boost(down).
Custom gauges mounted in the Instrument Cluster.
Hap, wit dakine interior department not from Evahboost, Maguire
Sparco pedals and custom dead pedal.
Audi 3 spoke with custom perforated leather covering. A-pillar gauges are 2 5/8" boost and EGT and center is wideband AFR.
Sparco Milano seats with custom leather/Alcantara covering. WRC type handbrake to activate rear calipers.
Function switches for:
1-Arming NOS FMIC serpentine spray bar that is activated by WOT.
2-Purge for NOS onto the same spray bar. It pre-cools the FMIC for staging at the track.
3-Launch control.
4-Turns off the wideband AFR gauge for night driving.
5-Switchable maps between high boost(up) and low boost(down).
Custom gauges mounted in the Instrument Cluster.
Hap, wit dakine interior department not from Evahboost, Maguire
Mike 820 said:
Wow!! What a machine. Any videos of it on the road?
Thanks very much for all the kind words guys. At this point, I don't really have any on road vids. I'm also away on holliday in Kauai for the month so no vids 'til I get back to not from Evahboost. European Car magazine is an American mag about, Tah Dah, European cars. Avowed gearhead, Paul Krasusky flew to Denver to do an article on my car this summer and it came out in the December issue. Here's the online copy:http://www.europeancarweb.com/features/epcp_1012_1...
Its hard to describe driving this car on da street. The power delivery is surprisingly linear for such a large turbo. I have driven a lot of S-cars and this one has been through a lot of stages during my 18 years of ownership. Its actually similar on clutch release at lower/moderate throttle input to a moderately modded car or for those that might know to RS2 level cars. When the throttle is used very hard things get blurry in a hurry. When using full throttle in almost any gear at say 4000rpm+ it will break loose all 4 wheels. Its very hard to watch or glance any gauges outside of the tachometer since your total focus is relegated to keeping the car going down the road ahead of you. The 255/35-18 Bridgestone RE-11s are as sticky a road tire as there is but they all break loose on command. This is actually a good thing since they act as a fuse. I don't snap driveline pieces, I just break da tires loose
Hap, wit dakine breakin loose urRS4 not from Evahboost, Maguire
HereBeMonsters said:
Fine. What did it start out as?? Looks a lot bigger than an A4 to me.
Hap, wit dakine xplainin not from Evahboost, Maguire
urs4guy said:
OK, in 1992, 1993 and 1994 Audi made the S4 from a C4/200 chassis. It had an I-5 20valve motor. That's why its referred to as a urS4 or original S4. It is not from the B5 chassis. In 1995 Audi redesignated the lines and the car became the S6/A6.
Hap, wit dakine xplainin not from Evahboost, Maguire
Hap, wit dakine xplainin not from Evahboost, Maguire
ALfooy said:
That is EPIC, well done man, looks stunning. Any pics of your A4 you've also got listed on your profile, sounds far from standard too =)
Funny you should ask about my Daily Driver/Track Car. I was planning on introducing her shortly. I'll start a thread this morning.Hap, wit dakine minimonstah not from Evahboost, Maguire
Galliano said:
Piece of beauty, but I seriously hate US spec bumpers. Damn laws eh 
And how does it work that this is an RS4? I'd have said it was more the predecessor of the A6 = RS6?
Hey GAnd how does it work that this is an RS4? I'd have said it was more the predecessor of the A6 = RS6?
Yeah I also like the Euro bumpers but the US ones do allow me to mount the 4" deep and 24" wide FMIC core. Something that would be impossible with the Euro. In 1992, 1993 and 1994 the C4 chassis was the 100CS/S4. In 1995 Audi changed their designation to A6, A8 etc. So this car was a ur(original) S4 and thus my interpretation of a Tuner version of a urRS4 if Audi had built one back then. HTH
Hap, wit dakine urthoughts not from Evahboost, Maguire
Galliano said:
Piece of beauty, but I seriously hate US spec bumpers. Damn laws eh
And how does it work that this is an RS4? I'd have said it was more the predecessor of the A6 = RS6?
Hey GAnd how does it work that this is an RS4? I'd have said it was more the predecessor of the A6 = RS6?
Yeah I also like the Euro bumpers but the US ones do allow me to mount the 4" deep and 24" wide FMIC core. Something that would be impossible with the Euro. In 1992, 1993 and 1994 the C4 chassis was the 100CS/S4. In 1995 Audi changed their designation to A6, A8 etc. So this car was a ur(original) S4 and thus my interpretation of a Tuner version of a urRS4 if Audi had built one back then. HTH
Hap, wit dakine urthoughts not from Evahboost, Maguire
Hey Guys
Well, Tufty Jones, the Welshman, started tearing into things on Da Monstah. We've been spending a good amount of time consulting with our chassis/cage fabricator, Teague, on how best to bring structural rigidity to the C4 chassis. Teague was most recently with 3R Racing here in Denver and joins Tufty after just completing the initial build of their new C30 and the older S60 Volvos for the World Challenge. Some of the features will include 2 sets of differently oriented motor mounts which gets rid of the stock mounts, A-arms for the front suspension to pivot on. A direct mounting of the front sway bar to the front shock. A brand new subframe to help support everything. There will also be some major beefing up of the frame from underneath. We're also going with a modified interior cage that retains, for now, the back seat. Add to this all the new engine mods that include lighter rods, a block girdle for rigidity, the billett crank, O-ringing the block, higher strength head studs and that just about does it for now.
More to follow...
Hap, wit dakine stuff not from Evahboost, Maguire
Well, Tufty Jones, the Welshman, started tearing into things on Da Monstah. We've been spending a good amount of time consulting with our chassis/cage fabricator, Teague, on how best to bring structural rigidity to the C4 chassis. Teague was most recently with 3R Racing here in Denver and joins Tufty after just completing the initial build of their new C30 and the older S60 Volvos for the World Challenge. Some of the features will include 2 sets of differently oriented motor mounts which gets rid of the stock mounts, A-arms for the front suspension to pivot on. A direct mounting of the front sway bar to the front shock. A brand new subframe to help support everything. There will also be some major beefing up of the frame from underneath. We're also going with a modified interior cage that retains, for now, the back seat. Add to this all the new engine mods that include lighter rods, a block girdle for rigidity, the billett crank, O-ringing the block, higher strength head studs and that just about does it for now.
More to follow...
Hap, wit dakine stuff not from Evahboost, Maguire
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