Author Topic: BMW S42 block anyone?  (Read 1828 times)

wannam42

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BMW S42 block anyone?
« on: February 01, 2012, 10:27:10 AM »

DesktopDave

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BMW S42 block anyone?
« Reply #1 on: February 01, 2012, 12:55:57 PM »
Nice find...but isn't that pretty much just an M42 block?  I'm no expert, does anyone know the specific differences?

That's a nice little bit of BMW history there.  Even if it's broken I'll bet it'd make me a fine coffee table!
'91 Brilliantrot 318i - COP, 4-hole injectors, 3.73LSD, NA ellipsoids, leather sport seats, ski bag, cruise control, power sunroof. Hose delete mod with red silicone!

'84 Alpinweiss 745i 5-speed driveway ornament.

dsm2002

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BMW S42 block anyone?
« Reply #2 on: February 01, 2012, 05:02:03 PM »
I have no idea whether the S42 block is different to the M42. The difference could just be preparation, i.e. the listing says the crank case has been polished.

I expect that the major shared parts such as block and head would have been specially selected for the S42 on the better characteristic such a the bore wall thickness, etc
oo=00=oo    O=00=O    oo=00=oo


enildeR

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BMW S42 block anyone?
« Reply #3 on: February 02, 2012, 04:30:49 PM »
"The S42 engine 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). Good luck finding more information on the internet about the S42, it's next to impossible.

Oh, and no, the S42 cams will not fit"
http://forums.bimmerforums.com/forum/showthread.php?t=162133&highlight=s42

http://www.m42club.com/forums/showthread.php?t=4333

Herschel

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CORRECTION ON THE S42 Engine I'm Looking at it. ;)
« Reply #4 on: February 06, 2012, 06:00:09 PM »
320i WTCC ZYLINDER-KURB Engine Block 86,38mm S42 and the other optional block ZYLINDER-KURB Engine Block 86,5mm -"Type Nic." A the gasket option you can order is 6mm in 1995 and 5mm in 1998 it changed a little in these years.  

Also some other goodies you might want to hear about:

Valve Seat "00"
Nut M6 Al
Connector d=16
Connector d=18
Cyl Head S42 '95 6mm
Cyl Head S42 6mm VL2
Cyl Head '98 VL2
KURBELWELLE Crankshaft S42 85,0mm $ 5,998.46
KURBELWELLE Crankshaft S42 '97 $ 10,580.61
Valve Guide 6/12,6mm "1"
O-RING O-Ring 18,72x2,62Vi
LAGERLEISTE EI Bear. Ledge S42
LAGERLEISTE AU Bear. Ledge S42
O-RING O-Ring 14x2
Valve Guide 6/12,5x46, 5
O-RING O-Ring 20,3x2,4 Vit
Screw plug M10x1 Al
LAGERLEISTE EI Bear. Ledge S42 '97 Bali
LAGERLEISTE AUBear. Ledge S42 '97 ball
Thread insrt M6x1x12 Time
Cyl.hd cover CFK S42 "carbon"
Cover 9100000205
Gasket 1,65mm Metal
Valve Seat S42
Valve Seat Ausla St.O
Ring S42 ZK
Valve Seat "00"


Quote from: enildeR;109957
"The S42 engine 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). Good luck finding more information on the internet about the S42, it's next to impossible.

Oh, and no, the S42 cams will not fit"
http://forums.bimmerforums.com/forum/showthread.php?t=162133&highlight=s42

http://www.m42club.com/forums/showthread.php?t=4333