S42 motor

[Spoon e30]

What car came with the S42?

[e30Matt]

I believe it was strictly a race engine.

[grapedrink]

I don't know and have never herd of one. I don't know what it would go in eather??

http://www.bimmerforums.com/engines.cfm

[e30Matt]

I don't know and have never herd of one. I don't know what it would go in eather??

http://www.bimmerforums.com/engines.cfm

AFAIK, there was a 2.0L version that was making ~300hp. Went in some track car, I remember seeing a post somewhere some while ago on it.

[bimmerphile]

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

[grapedrink]

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

I will take 2 :shock:

[Spoon e30]

wow, that would be a fun swap to sport in the 318is

[bimmerphile]

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

I will take 2 :shock:

give me 60 stacks of high society and I might be able to hook that up for you.

[Rob]

or you could just swap in a F20C with bolt ons and ECU :P

[SlammedE30]

Forgot to mention that the S42 is good for about 25 hours before it needs a complete rebuild. Damn race motors :P
-Ted

[Streetspec_iS]

heres a flic of my s42.



authors claims are not guaranteed

[peteM3power]

far out that would be awesome in the iS!

--Pete

[randomtask37]

that sounds like a ridiculously fun motor...

to bad about that unavailablitly and 25 hour life

[Rob]

fun at the track, yeah, anywhere else it would suck

[BimmerToad]

I never though I'd get quoted for that ;)

Nice pic of the S42. Notice how it's not slanted in the engine bay. Dry sump! :D

I'm starting to think that a BMW is too heavy to take advantage of the S42. A Lotus 7 car, on the other hand . . . . . :twisted:

If anyone wants more info on how to build a watered down S42, check this site out, http://www.gttechnic.com/ 260 hp from carbs!