October 6, 2022

Seeing a BMW E30 with a 13b rotary engine could effectively elevate just a few eyebrows, however there’s no arguing with how this turbocharged beast seems or goes; it’s one significantly spectacular construct.

Function from Efficiency BMW. Phrases: Elizabeth de Latour. Images: Aaron Lam

It feels prefer it’s been some time since we’ve featured a automotive with an engine swap that was sure to boost some eyebrows. We’ve had loads of swapped automobiles within the magazine in current occasions, however most have had BM lumps underneath their bonnets in order that’s by no means going to be particularly controversial, even should you’re becoming a diesel into an E30 Touring. So now we convey you a swap that’s going to upset the purists in type, Ehsan Hazrati’s (@ehs_garage) 13B rotary-powered E30. Common readers who forged their minds again by means of the mists of time would possibly recall that we’ve featured this automotive beforehand, means again in 2016, however it’s undergone some severe modifications in that point. Ehsan has been refining this construct through the years to convey it to this spectacular stage and it’s an superior machine, no matter whether or not you approve of his alternative of engine or not…

Not that you simply’re going to be altering his thoughts about rotaries anytime quickly, although, no matter how loudly you could voice your disapproval as a result of there are two constants in his life: E30s and 13Bs. “I’ve been into BMWs ever since I used to be 5 years outdated. I used to be drawing BMW E30 spherical headlights and kidney grilles earlier than I even knew what the automotive was,” he grins. “They’re excellent in each means. I wouldn’t change something in regards to the E30 – apart from the engine, which I’m positive you’ve gathered,” he provides with fun. “My first BMW was truly an E21, a Henna purple 323i Coupé. I all the time wished an E30 however my neighbour down the street was promoting this and it was super-clean so I purchased it right away as my introduction to old-school BMWs,” says Ehsan and he’s been dedicated to basic BMs in an enormous means ever since then.

“I’ve owned roughly 12 or 13 E30s prior to now and I’ve executed virtually all the things – customized interiors, large wheels, suspension upgrades, sound programs, neon lights (once they had been cool), brake upgrades, physique kits and engine bay wire tucks,” grins Ehsan so he’s clearly well-versed within the methods of modding E30s. If that wasn’t sufficient, apart from this one he’s additionally bought no much less then 4 different E30s, together with a rotary drag construct, an NA rotary four-door and a minimum of two LS V8 builds – the person’s clearly insatiable.

“I noticed this E30 325i Coupé marketed on the market; the proprietor had it locked away for six years within the storage hoping to go it all the way down to his grandchildren however, sadly, needed to put it up on the market. It had – and nonetheless has – the unique manufacturing facility Sensible purple paint from 1990, my favorite color, so I needed to personal it!” grins Ehsan. “It was in immaculate and authentic situation with plenty of OEM manufacturing facility upgrades like fog lights, map gentle mirror and a manufacturing facility premium sound system, all of the logbooks and proprietor’s manuals, spare key and it has solely ever had two homeowners.”


Regardless of his prolific modding previous, Ehsan had no mods in thoughts for this E30; “I didn’t have any plans on the time of buying the automotive, proudly owning it was the sport plan!” he laughs however it didn’t take lengthy for him to get caught into his new challenge and now we have to start out with the engine, as a result of how may we begin wherever else? “The engine swap wasn’t too complicated as rotary engines are small, however a customized crossmember and gearbox mounts needed to be fabricated,” he explains. “The engine itself was constructed and tuned by Pac Efficiency Racing, which holds the world report for the quickest rotary-powered drag automobiles. This engine package deal is a confirmed nine-second quarter-mile combo,” grins Ehsan. “All brand-new components had been used all through, nothing outdated or second-hand. My plan once I began was a street-drivable mild-ported engine with a small turbo. It clearly didn’t go to plan after I drove the same engine in one other automotive,” he laughs and what he’s ended up with is nothing wanting a monster.

The engine itself is a 2001 RX-7 13B that Pac Efficiency has became a full-cut bridgeported race engine and there’s no lacking the huge Garrett turbo that takes up a lot of the engine bay, full with purple HKS consumption. It’s mated to a Turbosmart 50mm wastegate with a 4” screamer pipe and dual-port BOV, and there’s a 3.5” stainless exhaust system completed with a single discreet tip. Extra parts embody 4 2000cc high-flow injectors, a Haltech Platinum 2000 ECU and increase controller solenoid and Speedflow purple and blue billet fittings with braided hoses all through. The results of all this can be a huge 542whp, round 630hp on the crank, together with 460lb ft wtq – all produced at 26 psi of increase – and that’s an enormous quantity of horsepower in a automotive as gentle because the E30 and that’s made it into an absolute beast. Unsurprisingly, this engine requires a suitably sturdy transmission and Ehsan is utilizing a Toyota Supra twin-turbo R154 five-speed handbook gearbox with a Chromoly gearset, Dice Pace billet short-shift, 3”-thick-walled one-piece propshaft, an E28 M5 diff with a customized gearset and Driveshaft Store 1000hp 36-spline customized drag racing driveshafts, and that setup ensures that this E30 can safely deploy all of its ample energy.

With a lot energy on faucet, the E30’s chassis wanted some severe consideration to assist it cope and Ehsan hasn’t reduce any corners right here. “I’m working customized Bilstein coilovers, entrance and rear Eire Engineering racing anti-roll bars with adjustable hyperlinks, E36 M3 entrance management arms, triangulated/tubed bolstered rear swing arms, a Z3 steering rack, 75D Delrin bushes all through and anti-camber weld-on plates for the rear trailing arms. They had been all picked based mostly on earlier expertise,” he explains and that’s a powerful array of enhancements which have actually sharpened-up the E30’s chassis, making certain Ehsan can get pleasure from all that energy. The brakes too have been upgraded because the inventory 325i objects would have struggled with over 600hp and this automotive is now geared up with Corvette Z06 entrance calipers and E46 M3 rear calipers with 310mm discs all-round and so they supply some severe stopping energy.

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Ehsan is clearly a person who believes in doing issues correctly and there’s not one space of his BMW E30 13b rotary engine that hasn’t been enhanced not directly and that features the outside, delicate as these enhancements is perhaps due to the truth that he’s such a fan of the E30’s manufacturing facility seems. “The outside styling of the E30 actually is ideal. I’m personally not a fan of physique kits and even the manufacturing facility BMW iS physique equipment. The true magnificence was within the silhouette of the automotive itself, similar to the Alpina automobiles: entrance spoiler sure, rear spoiler sure… nothing else. Easy and stylish!” he grins and he’s caught to that philosophy when enhancing the aesthetics. “I fitted the Rieger entrance spoiler and splitter and had it colour-matched to the automotive. I additionally fitted the real M Tech 1 boot spoiler,” he says and the one different additions are the heckblende panel and the discreet Mazda RE13 (Rotary Engine 13B) grille and boot lid badges, as a delicate trace to these within the learn about what’s lurking beneath the floor.

BMW E30 with 13b rotary engine

Whereas Ehsan has saved the styling delicate to permit the E30’s pure beauty to shine, relating to wheels he’s given himself free rein to try to discover that excellent set that basically works on this construct. “This automotive has had 5 units of various wheels all through the construct which I by no means actually beloved,” he sighs, however that’s now not the case. “I all the time had my coronary heart set on my present wheels, Autostrada Modena three-piece break up rims, however by no means discovered an entire set. Then these got here up in 4×100 so jumped on them instantly,” he grins and so they look so good on the E30 and supply an enormous change from the BBS cross-spokes he was working after we final noticed it. They’ve bought that old-school styling that fits it completely with these chunky centres, we love his alternative of working black {hardware} whereas the silver centres and polished lips are the right combo and we will see why he’s so pleased with this set of wheels.

The inside has additionally undergone fairly a dramatic change from the final time we noticed this automotive however it’s truly moved away from the form of hardcore cabin you would possibly anticipate of a construct like this. “I had fitted the automotive with Sparco Professional 2000 entrance race seats and was working no again seats, however I used to be getting extra road credit score when the automotive had real black leather-based E30 M3 seats, so I pulled out the Sparcos and put within the black leather-based back and front seats. I additionally wished a smooth however modified look with the gauges so I fitted it out with AutoMeter Sport-Comp gauges with orange needles,” he says and we like the brand new look his E30 cabin has occurring. The M3 seats are joined by Sabelt four-point harnesses and there are additionally real E30 M3 ground mats whereas different additions embody an Alpina B6 3.5 Momo steering wheel, Tomei Delrin gear knob, and a hydraulic handbrake whereas there’s no lacking that big AutoMeter Monster rev counter that sits atop the steering column.

Ehsan’s BMW E30 geared up with that 13b rotary engine initially took him round 4 months to construct however a 12 months and a half to excellent and that’s the place the eye to element and additional work actually is available in; “I spent that point altering spring charges and diff ratios, becoming greater driveshafts, tuning the suspension and several other observe days to check and tune,” he says however because the automotive sits now it’s executed and it’s not typically we get to say that a couple of challenge featured on this magazine. Out of all the things that’s been executed to this automotive it’s truly one of many smallest mods that’s Ehsan’s favorite; “I’ve to say it’s the air vent increase gauge. I designed and modified that myself. It’s just like the Alpina digital vent however that is an AutoMeter analogue gauge,” he says and that’s proof that it’s these little particular person features of a construct that typically matter probably the most. With a bunch of different E30 builds on the go, Ehsan goes to have his arms full for the foreseeable future and that signifies that this accomplished challenge can fulfil its goal. “I plan to simply drive it and revel in it,” grins Ehsan and now we have little question he’ll be doing that at each given alternative.

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Tech Spec: BMW E30 with 13b Rotary Engine


2001 FD3S Mazda RX7 Sequence 8 13B rotary engine, Pac Efficiency full-cut bridgeported race engine package deal, model new water pump, new high-voltage alternator, new rotor housings and 12mm ARP stud equipment, 4x 2000cc high-flow injectors, Turbosmart gasoline strain regulator, Garrett GTX4088R Gen 2 turbocharger, HKS purple billet velocity stack, Turbosmart 50mm Energy-Gate wastegate, 4” stainless-steel turbo screamer pipe, Turbosmart dual-port blow-off valve, 3.5” stainless-steel exhaust system, Rotaflo resonator and rear silencer, 3.5” mandrel-bent tip, Haltech Platinum 2000 ECU, increase controller solenoid and LS1 self-igniter coils, Turbosmart eBoost2 increase controller unit, Speedflow purple and blue billet fittings with braided hoses all through

Energy & Torque:

542whp and 460lb ft wtq @ 26 psi


Toyota Supra twin-turbo R154 five-speed handbook gearbox with Chromoly gearset, Dice Pace billet short-shift, 3” thick-walled one-piece propshaft, Driveshaft Store 1000hp 36-spline customized drag racing driveshafts, E28 M5 differential with
customized gearset


8.5×16” (entrance) and 10×16” (rear) three-piece Autostrada Modena wheels with 205/45 (entrance) and 245/45 (rear) street tyres, 255/50 (rear) drag tyres for racing, customized Bilstein motorsport coilovers, Eire Engineering race anti-roll bars with adjustable hyperlinks, E36 M3 entrance management arms, bolstered triangular tubed rear swing arms, anti-camber weld-in plates for rear swing arms, Z3 steering rack (2.7 turns lock-to-lock), 75D Delrin AKG strong bushes all through, customized tubed diff ladder brace assist, Corvette Z06 calipers (entrance), E46 M3 calipers (rear), 310mm discs (f&r)

Unique Sensible purple, Rieger entrance spoiler and splitter, M Tech 1 rear spoiler, real BMW E30 heckblende, Mazda RE13 entrance grille badge and boot badge


Black leather-based E30 M3 entrance and rear seats, E30 M3 ground mats, E30 Alpina B6 3.5 Momo steering wheel, Momo boss equipment, Sabelt/Sparco four-point racing harnesses, Tomei Delrin gear knob, Turbosmart eBoost2 increase controller gauge, AutoMeter Sport-Comp gauges (increase, oil strain, oil temp, water temp, volts and Monster tacho with shift gentle), E46 M3 aluminium pedals and footrest, hydraulic handbrake