Featured: BMW E30 M50 328i Turbo – Owner Aron Jarl from Iceland

Really happy to be featuring this BMW e30 m50 turbo that my friend Aron Jarl owns. Great project and well planed with detailed finish.

Name: Aron Jarl Hillers                              

Age: 25

Location: Reykjavik, Iceland

Year and model of your E30: 1987 328i Mtech I Turbo 24v

Wich forums do you use? BMWKraftur.is and little bit of everything.

Whats the story behind your E30? I´ve had a few e30´s since i was 18 years old, I bought this from Germany march 2007. Then i had a e30 m3 that i was goin to make up but the shell was completely useless because of many collisions and very poorly repaired. So i decided to buy a good coupe pre-facelift e30 with Mtech-I kit. Which is the nicest besides M3, So i found this a very good price, 3 owners and no rust. My plan was to move allt the parts from the m3 to this one, which i did. Since 2005 was i had a big dream to make a m50 turbo e30. But i had to put up with the s14 (m3 engine) for 3 years while i was in school. I started slowly collecting parts for the turbo project.

What got you into E30‘s?  I´ve always loved them, i´ts just something about them. I´ve raced/drifted on e30 for seven years and i have incredibly high sense of how they behave on the street. When i got a driver´s license was only two cars that i wanted, e30 325i or Peugeot 205 Gti. (now i have both)

How many E30‘s have you owned: two trouring – one m3 and six coupe so its nine in total.

What‘s your favorite E30? My favorite is e30 m3

What are you working on now? Waiting for the summer to burn tyres, maybe installing a new suspension – KW variant 2

Any plans for the future? Re paint the car and make the BBS RS like new. Make the car flawless.

Interior: Im a big interior fan, i have e30 m3 complete interior, Recaro SRD from ITR and Sparco race seat to fit in when im competing in drift.

Exterior: Full M-tech I

Wheels and tires:

 BBS RS 17‘‘ 8.5×9.5‘‘ BF Goodrich G-force 215-40-17 – Dunlop SP 9000 245-35-17

OEM Alpina 17‘‘ 8.5‘‘ Khumo Ecsta 215-40-17

Suspension mods: I have to work on that, plan is KW Variant 2. But i have the 5 lug system from e30 m3

Brakes: Front- disk from MB w124 500e 302x28mm and brake caliber from BMW e32 740

Rear- OEM e30 m3 282mm disk and m3 e30 caliber

Drivetrain: Getrag 260 – UUC stage 2 m50 clutch kit with modified m20 flywheel – modified drive shaft – Rear diff from e30 m3 3.25:1 and Z3M diff cover. Rear axels from e30 m3.

Engine:

90 model M50 Non Vanos driven 82k miles
Total build up. with orginal parts exept
MLS ‘140’ headgasket and ARP head studs

To make the 2.8L M50 i used
M52b28 crankshaft
M20b20 pisron rods thay are 4.5mm shorter than m50b25
M50b25 ”oem” pistons

Exhaust: The turbo manifold is made by me welded and fitted – split pulse T4 flange with TiAL 44mm wastegate 3‘‘ straight flow system made by me.

Anything else you want to elaborate on?

Turbo parts.
*KKK k27.2 turbocharger
*TiAL 50mm blow off
*TiAL 44mm wastegate
*Turbo Manifold is made of black steel, costum made by me. (Split pulse)
exhaust system is 3” straight back, a little bit noisy, plan is to chance that in winter.
*CXracing intercooler.
*Injector are from MMC Evo 8 560cc with 3bar but m50 runs 3.5 bar fuel pressure so they are a little bit bigger they are perfect for this setup.
65% duty cycle at 13psi boost.
*Fuel pump from Mercedes w211 e55 AMG (Bosch huge one)
*Costom made motor arms by me with Poly urithan mounts
*M50 UUC stage 2 clutch kit from racingdynamics.com (two mass version)
*I used M20 flywheel and modified the clutch on that.(lighter and better than two mass weak and heavy flywheel.
*Getrag 260 from m20b25 great and strong gearboxes but i already broke one this summer the 3rd gear.
*custom made drive shaft.
*Rear Diff is from e30 m3 euro Limited slip 3.25:1 (Z3M diff cover) (so i have very long gears and more lode in the drive train for the turbo to spool faster up) its necessary for light car like this.
*Vems standalone system.

 

 

the engine is performing @ 8psi about 320-340hp
12psi about 400hp
19psi about 500hp it spins always wheels in 3rd gear on straight line.

limit on these m50 with orginal piston are around 540hp

Many turbo guys here in iceland say this is að PERFECT setup.

i spent alot of time to think about m50 turbo,
size of turbocharger and how it fits together.