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    NOTHING IS IMPOSSIBLE 720hp turbo #BMW-E36 hardcore British built M3. We revisit an insane turbo E36, now pushing 720hp. Ignoring conventional routes, Steve Will has created a turbocharged E36 M3 that performs like no other… Words: Stav Neophytou. Photos: Andy Starkey.


    While turbocharging in-line six #BMW engines has been the norm in Europe and the USA for decades, until recent years it’s been a rarity in the UK due to our cars being righthand drive. BMW sixes are canted towards the exhaust side, which also happens to be the driver’s side on right-hand drive cars. This means a severe lack of room for not only the turbo and manifold but getting a suitably large exhaust downpipe past the steering column is a real nightmare, too. However, despite these fitment headaches, turbocharging is finally taking off in the UK BMW scene.

    A man clearly ahead of the times, though, is UK resident Steve Will. This incredible E36 M3 is his, and it’s been turbocharged for the best part of a decade now! While it’s been a long road, full of pitfalls and learning experiences, the end result is jaw-dropping.

    Steve bought this car back in 2005 and turbocharging it was always on his mind since driving a turbocharged 635CSi many years previous. Despite the perceived impossibility of a RHD Turbo E36 M3 back then, it was barely two years later before it had its first incarnation as a turbocharged engine. This first setup used a cast log manifold by South African BMW expert Savspeed, a Turbonetics T70 turbo, and a fully-forged engine with a compression ratio of 9.5:1. Unfortunately, while clearly incredibly powerful, the combination of the high compression ratio, pump fuel and suspect mapping meant the engine expired due to severe detonation while still being tested and mapped at Bruntingthorpe Proving Ground.

    Thankfully this initial disaster was covered under the tuner’s warranty, so the engine was rebuilt with a more pump-fuel friendly 8.5:1 compression ratio.

    Sophisticated Motec engine management was fitted and the car was finally dyno’d at a ballistic 670hp and 500lb ft of torque. While we really don’t need to tell you how incredibly fast a 670hp E36 is, due to the big turbo and basic log manifold it wasn’t the most efficient setup in the world. In fact, even Steve will be the first to tell you it was actually very laggy. While it hit the 350hp mark at 5500rpm the power then literally jumped up 100hp every 500rpm from then onwards, pulling hard until over 7500rpm. It was an absolute animal; insanely fast but far from controllable!

    The engine stayed in the above spec for a number of years but as the car was primarily used as a drift car, both for fun and competition, outright power became less important than response and drivability. So, when the engine finally failed in 2011, plans were made for a more user-friendly engine spec. While the cast log manifold was still seen as the only option, Steve increased the compression ratio to 9:1 and fitted a smaller PT5862 turbo – Precision’s equivalent of the popular Garrett GT35R.


    After some expert mapping from Greg at Protuner the way the car drove was transformed, with 350hp now coming at just 3500rpm. At the same rpm the engine was also making well over 500lb ft of tyredestroying torque. Peak torque was incredible, 650lb ft, and response was instant, too. Compared to the original larger turbo, however, peak power was down over 100hp at 560hp, and peak rpm was much lower, too, with the graph flat-lining from 5000rpm until just over 6000 when it started to drop.


    There’s no doubt 560hp and 650lb ft are supercar-smashing numbers in most people’s eyes, and if Steve knew no differently he’d no doubt be over the moon with the performance but despite the amazing torque and response, his previous experience of having a huge 670hp and a screaming high rpm performance was impossible to forget. In fact, he was so used to the insanity of the old setup he called this one “boring”, which leads us to where we are today…

    What Steve ideally wanted was the best of both engines: the insane power of the big turbo engine but with the torque and response of the small turbo engine. Pretty much everyone he spoke to said that was impossible. Undeterred Steve employed the services of someone who sees the word ‘impossible’ as a challenge: Thomas Zurawski of Zurawski Motorsport in Ledbury, Herefordshire.

    While the engine itself was bulletproof, and it’s hard to beat a #Motec-M800 ECU, Zurawski Motorsport is an expert in custom turbo setups and could see the existing design left a lot to be desired. Not only was the cast log turbo manifold considered a poor design but the inlet plenum, intercooler, exhaust system, and air filter setup were all on the list for improvement. Tubular twin scroll turbo manifolds didn’t previously exist for RHD BMWs due to the lack of room but the Zurawski design fits perfectly. And not only does it flow far better than a restrictive log manifold but the twin-scroll design drastically improves turbo spool up, allowing a bigger turbo to be used without losing drivability.

    To further aid spool and throttle response, twin WRC anti-lag valves have been fitted, allowing huge amounts of airflow to go direct from the compressor to the exhaust manifold which, along with fuel and ignition adjustments from the Motec ECU, give the engine the ability to stay at full boost even when the throttle is closed, not to mention the rapid-fire bangs and huge flames from the side exit exhaust!

    The other big change to the engine is certainly the most controversial: the inlet plenum. The shape and design of it is certainly a world away from typical designs and, due to this, many naysayers claimed it would be restrictive or simply not work. The reality is, however, it’s actually a commonly-used design in turbocharged race engines, as found in WRC, RallyCross, and LeMans. The unusual design gives equal airflow to each cylinder, something that’s a big problem on turbocharged cars, especially on in-line six engines, and by allowing the cylinders to receive equal amounts of airflow improvements are seen in power, spool up, reliability, and to safe boost limits.

    In addition to the manifolds, the entire turbo system – from air filter to exhaust tailpipes – was custom-made from scratch by Zurawski Motorsport for maximum flow and efficiency. It includes a huge grillemounted air filter, an enormous intercooler that necessitated the rear mounted radiator conversion, twin external wastegates, and a full custom exhaust system, with a very cleverly designed downpipe that somehow manages to snake past the dreaded RHD steering column!

    Of course, the most important part of any turbo system is the turbocharger itself, which is a BorgWarner S300SX 9180 turbo, with a twin scroll T4 turbine and billet compressor. This turbo is actually bigger than the previous original laggy unit, so surely this new engine can’t be very responsive? Think again…

    With the car once again in the expert hands of Greg at ProTuner, the new setup made a touch over 600hp at just 1bar boost, and 700hp at 1.5bar, 30hp more than the traditional-style turbo setup using the log manifold. While the power is impressive, what really makes it special is this time he also had an insane 730lb ft of torque, with over 500lb ft of that by just 3700rpm. Yes, it spools as fast and makes even more torque than the small turbo did but makes more power than the big laggy turbo! The currentspec engine actually makes more power and torque than the original engine right across the rev range, from 2500rpm until over 7000rpm. In fact, at 4000rpm it now has 375hp and 490lb ft more!

    Buoyed on by these incredible results, the car recently returned to the dyno with 109 Octane race fuel where it made 720hp and over 800lbft at 1.4bar boost. The new fuel gave such incredible response and torque that, by the time of writing at least, Steve’s been unable to get traction at any higher boost than that. Once he finds a traction solution, though, he’s hoping for 800hp plus. Considering the current results, even over 1000hp looks to be easily achievable with only a slight increase in turbo size.

    While we make no apologies for concentrating so much on Steve’s groundbreaking engine, the rest of the car is no less wild, both in looks (thanks to the M3 GTR wide bodywork and Team Dynamics motorsport wheels) and in performance (thanks to a spec that is truly world class).

    On the inside there’s a comprehensive custom roll-cage that ties in to the diff mounts, a sophisticated rear mounted radiator setup that draws air through the side window ducts and exits via the rear diffuser, while underneath there’s a drift- specific front suspension design with incredible amounts of steering angle.

    What’s perhaps most impressive is the thought put in to all the various parts fitted to this car. While you will no doubt have read the comprehensive spec list and recognised most of the parts’ manufacturer names, Steve has built this car more like a Works race car than a typical privatelyowned car, with the reliability and strength of all components being the primary consideration. This doesn’t just mean strong and effective parts but even things like the fuel and oil pressures are continuously logged by the ECU, which shuts down the engine if something deviates from the specified parameters.

    So now the car is complete, what does Steve want to do with it? Well, despite being used for competition drifting for some time now, he’s more interested in just having fun in it without the stresses of trying to win trophies. On the rare occasions this car isn’t on masses of opposite lock, Steve’s actually very keen to take it back to where the original turbo engine expired, Bruntingthorpe Proving Ground, this time to break the 200mph mark – something it should do with ease.

    For a car built with nothing but Steve’s own enjoyment in mind, the progress of this build over the years, and especially the final result, is a lesson for all of us. Not only is this sort of unbelievable, best-of-all-worlds, engine performance perfectly possible (and reliable if done correctly) but putting true thought in to what you are doing, taking influence from world-class race cars rather than simply following the crowd, really pays off in the long run.

    The rest of the car is no less wild, both in looks and performance.

    DATA FILE Turbo #BMW-E36 / #BMW-M3 / #BMW-M3-E36 / #Motec / #BorgWarner /

    ENGINE 3.2-litre straight-six #S50B32 / #S50 / #BMW-S50 , standard crank, #Pauter steel rods, 9:1 JE forged pistons, Cometic multi-layer head gasket, ARP head and rod bolts, standard head and cams with #Vanos enabled, #Motec-M600-ECU with an E888 expander, #Zurawski-Motorsport twin scroll tubular manifold, twin Turbosmart external wastegates, #BorgWarner-S300SX-9180 twin scroll T4 turbo with uprated billet wheel, full turbo-back Zurawski Motorsport exhaust system with side skirt exit tailpipe, twin WRC-style anti-lag valves, heat wrapped turbine housing and downpipe, #Zurawski-Motorsport equal flow inlet plenum, custom boost pipes and front mount intercooler, Zurawski Motorsport grille mounted air filter, high flow fuel lines, high flow alloy fuel filter, twin #Bosch-044 fuel pumps, 25ltr ProAlloy fuel cell, uprated fuel pressure regulator, Titanium oil catch tank, switchable ECU maps for Shell V-Power and Sunoco race fuel, switchable anti-lag and launch control systems, #Mocal oil cooler, uprated engine mounts, custom rear mounted radiator system, additional electric water pump, full fire extinguisher system, interior and exterior emergency cut-off switches, Petronas 10W60 oil. 720hp and 800lb ft

    TRANSMISSION #ZF five-speed gearbox, #Helix twin-plate paddle clutch, custom lightweight steel flywheel, M3 Evo rear diff with shimmed LSD plates for 70% lock, E46 M3 crownwheel and pinion, uprated gearbox mounts, #ATF Racing gearbox, diff mounts integrated into roll-cage

    CHASSIS 9x17” (front) and 10x18” (rear) #Team-Dynamics 1.2 wheels with 225/45 (front) and 265/35 (rear) Pirelli PZero tyres, BC coilovers, IRP drift front suspension setup, lightweight alloy adjustable lower arms, rosejointed lower arm bushes, custom adjustable top mounts, Mocal power steering cooler, polybushes, standard M3 brakes, hydraulic handbrake, Wilwood incar brake bias adjuster

    EXTERIOR #BMW-M3-GTR front bumper, front wings and rear spoiler, E46 M3 GTR-style vented bonnet, custom rear arches, custom alloy rear diffuser, roof vent, rear window ducts, #Plastics4Performance lightweight windows

    INTERIOR Full custom FIA-approved multi-point cage, Motordrive bucket seats, TRS harnesses, OMP steering wheel, Stack AFR, EGT and oil pressure gauges, Autometer boost gauge, carbon doorcards, custom ducting and shrouding for the rear mounted radiator

    THANKS A-Frame Engineering (www.aframeengineering.co.uk), County Alarms (www.countyalarms.co.uk), ProTuner (www.protuner.co.uk), Zurawski Motorsport (www.zurawskimotorsport.com)

    Steve wanted the power of his big turbo engine but with the torque and response of his small turbo engine.

    Everything about this extreme E36 M3 means business. Side-exit exhausts look and sound awesome. Custom alloy rear diffuser allows hot air to be pulled away from the boot-mounted radiator, itself fed by pipes attached to side window intakes.
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    Stav Neophytou
    Stav Neophytou joined the group BMW E36 3-Series and M3 Club
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