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  1. #1
    Mockngbrd's Avatar
    Mockngbrd is offline BMW.SG Admin
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    Incredible BMW's Screaming S42 engine



    Was just surfing around for more info on my M42 and stumbled across a posts of the rare S42.
    did more googling and stumbled upon this video of the S42 in action (turn down ur speakers, it screams!)

    YouTube - Assen bmw STW

    [youtube]FMqvxYeyKhg[/youtube]


    Further probing led me to find these specs:

    The S42 was a 2.0L version of the M42 raced in touring car championships, replacing the 2.0L version of the S14 in '94.

    IT was a 2.0L touring car engine with a 86.5mm bore and around a 85mm stroke, which shared the same block as the street going M42.

    Unlike the common M42, the S42 had a more sophisticated engine management system, and had individual throttle bodies.

    The S42 unfortunately did not share the same valvetrain as the M42, and is a solid lifter valvetrain (possibily from the S50Euro) fully capable of over 9000rpm, but was limited to a 8500rpm redline, as dictated by touring car rules.

    It was mounted upright in the bay, not slanted, and ran on a full dry sump oiling system. The pistons had a static compression ratio of around 12:1, and running on pump gas, the S42 made around 280hp (and up to around 310hp later in it's life).

    *280hp from a 2.0... woo shiet *


    Here's the worst bits though:
    Unfortunately, almost none of the S42 parts would make a practical street M42 engine, except for maybe the internals (minus the 12:1 comp pistons).
    Also the s42 needs frequent rebuilts and was strictly a racing engine
    oh yea... think LTA won't be too fond of a car sounding like that on the street either

    The S42:











    More images: The S42 Race Engine !!!! - M42club.com - Home of the BMW E30/E36 318i/iS
    Last edited by Mockngbrd; 25-02-2008 at 01:14 PM.

  2. #2
    iScoupe's Avatar
    iScoupe is offline UNSTOPPABLE!
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    Re: BMW's Screaming S42 engine

    the engine damn high pitch ! bro mock u want individual throttle on ur iS ?
    BVO have ~ $1500 EURO kekeke... spread u virus lai la, group buy mia??

  3. #3
    smoobies's Avatar
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    Re: BMW's Screaming S42 engine

    the initial part sounds like RC car..
    the later sounds like my ice blender at max speed.

  4. #4
    Mockngbrd's Avatar
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    Re: BMW's Screaming S42 engine

    Quote Originally Posted by iScoupe View Post
    the engine damn high pitch ! bro mock u want individual throttle on ur iS ?
    BVO have ~ $1500 EURO kekeke... spread u virus lai la, group buy mia??
    u need to find a group first mah...haha

  5. #5
    dpointt's Avatar
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    Re: BMW's Screaming S42 engine

    surprisingly the engine bay looks emptier than the iS I had previsouly
    hmm....

  6. #6
    powersteer's Avatar
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    Re: BMW's Screaming S42 engine

    the high pitch scream is actually from the str8 cut gears, not engine

  7. #7
    Mockngbrd's Avatar
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    Re: BMW's Screaming S42 engine

    actually tere was quite a lengthy discussion on the source of the high-pitched sound. Wth the conclusion of it coming from the differential rather then the straight cut gears.

  8. #8
    acupunch's Avatar
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    Re: BMW's Screaming S42 engine

    is this replace with 275 bhp BMW 320si WTCC that is currently used in the WTCC race.



















    Last edited by acupunch; 25-02-2008 at 05:12 PM.

  9. #9
    acupunch's Avatar
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    Re: BMW's Screaming S42 engine

    this is the press and specs of the car.

    Frankfurt (GER), 12th September 2005. BMW defines the direction for the future - this time in touring cars. From 12th September, the Munich automobile manufacturer presents the motorsport version of the new BMW 3 Series at the 61st International Motor Show (IAA) in Frankfurt. From 2006, the car will be competing in the FIA World Touring Car Championship (WTCC) and in many other racing series around the world.

    The 275 bhp racing car was developed by BMW Motorsport. It is the racing version of the special model BMW 320si, which will be on offer from BMW dealers as a limited edition from December 2005. Like its production counterpart, the motorsport version of the BMW 320si will be driven by a powerful 2-litre four-cylinder in-line engine. The car complies with the Super 2000 regulations and is 45mm longer and 36mm wider than its predecessor.

    With this car BMW will continue the tradition of customer sports in 2006. Apart from the World Touring Car Championship, in which BMW competes with national teams, the successful racing version of the BMW 320i is also racing in Championships in Denmark, Italy, Russia, Sweden and Asia. Until now, more than 100 racing sports kits of the E46 series have been sold to motorsport teams by the BMW racing parts distributors.

    BMW Motorsport Director Mario Theissen says, "Touring cars without BMW is unthinkable - and BMW is equally unthinkable without touring cars. This is what made the brand grow, and we will stick to this tradition. Apart from works support we have always been keen to keep racing affordable for our customers and at the same time offer a high-performance package. This tradition is now continued by the racing version of the new BMW 3 Series. I am sure that this model will write further chapters of BMW's successful history."

    In the World Touring Car Championship, the BMW 320i is currently in its last season. Six races prior to the season finale, Dirk Müller (GER) of BMW Team Deutschland leads the drivers' table, closely followed by his brand-mate Andy Priaulx (GBR) who competes for the BMW Team UK. The Manufacturers' Championship is also lead by BMW, which looks likely to bring the title home to Munich yet again.

    Touring car racing is BMW's most successful discipline. The brand can boast an impressive list of successes: 20 European Championship wins with FIA sanction and winner of the first and only World Championship in 1987. Over the past couple of years, BMW came first in the manufacturers' competition of the FIA ETCC. In 2004, Priaulx won the drivers' title in the European Championship.

    Technical specifications BMW 320si
    Motorsport version for the 2006 FIA World Touring Car Championship.

    Length: 4,535 mm
    Width: 1,845 mm
    Height: approx. 1,350 mm
    Wheel base: 2,763 mm
    Vehicle weight: 1,140 kg (with driver)
    Engine type: four-cylinder in-line
    Capacity: 1,998 cc
    max. output: approx. 275 bhp at approx. 8,400 rpm
    max. engine speed: 8,500 rpm (as per regulations)
    Cylinder block: aluminium crankcase reinforced with a bedplate
    Engine control: BMW Motorsport ECU404
    Tank capacity: approx. 45 litres
    Fuel: standard fuel, Super Plus unleaded
    Chassis/body: unitary construction steel body
    Aerodynamic front apron, rear apron, flared front and rear
    package: wheel arches made of CRFP/GFRP, rear wings made of aluminium
    Front axle: double joint Mc Pherson axle with adjustable anti roll bar
    Rear axle: five arms axle with adjustable anti roll bar
    Shock absorbers: Sachs with adjustable compression and rebound
    Brake system, front: four-piston AP brake callipers, iron brake discs of 332 mm diameter
    Brake system, rear: two-piston AP brake callipers, iron brake discs of 280 mm diameter
    Wheels: aluminium rims, SA 216 BBS
    Seat: Recaro ProRacer HANS

  10. #10
    acupunch's Avatar
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    Re: BMW's Screaming S42 engine

    when the cat pipe turn amber red dam steam sia.

    [youtube]http://www.youtube.com/watch?v=UqkJstRAR0Y[/youtube]

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