M42 Project started! (S42 Replica)

[nuvola rossa]

RHD? mmm
so you need something like this






or like this:



http://www.m42club.com/forums/showthread.php?p=98367

top mount on e36 are a bit tighter than E30s, you need to remove some bits from the way, but as you can see it can be done.

sorry gizmo for hijacking the thread.

[mim2end]

cheers for da pic's . those look a lot complicated but GREAT . Wery Long maifold piping, and looks that there are many sharp bends involved, I was thinking to put it close to the engine and raise the bonnet where the turbo sits and S*itload of heat insulation
back to Gizmos post
Do you know any info about those pistons ? I want to know what was the reason for shaving the bottom of'em ?
Sry if I'm being pain in the lower part

[RoyalTeam]

hej Gizmo, I'm following your project. Have you installed ITB's at the end? I have an E30 318is for racing use only, and I'm working now with the ITB's from S50 , I did also many other things in my m42, but I'm really interested about your project. Please tell me how going on your project.

[RoyalTeam]

[MrSkinnyM42]

Dues anyone know anything about the S42B20. i would like to know about the cams and also the bore and stroker of the block.
thanks

[SWISS]

nice werk

[DailyE36]

Dues anyone know anything about the S42B20. i would like to know about the cams and also the bore and stroker of the block.
thanks

i have found some s42b20 specs on the web

S42B20 (Version: 08/1995):
* Stroke = 85mm
* Bore = 86.5mm
* Compression ratio = 12.4:1
* Total displacement = 1.997ccm
* Rod length = 145mm
* Inlet cam = 312 degrees (spread: 94) (Eö=40, Es=48 (@ 2mm lift) )
* Exhaust cam = 304 degrees (spread: 98) (Aö=45, As=28 (@ 2mm lift) )
* Inlet Valve diameter = 35mm
* Exhaust valve diameter = 32mm
* Inlet port metrics: W=52mm, H=29.7, Radius=14.85mm
* Slide throttle diameter = 46mm
* Header = 4-2
* ECU = ECU4A.1
* Power DIN 70020 = 285PS / 207kw @ 8300rpm
* Torque DIN 70020 = 245Nm @ 7000rpm
* Max rpm = 8500rpm (FIA regulation "SuperTouring")
* Gasoline quality = Super Plus (Oktan min. ROZ 98)
a S42

i also found a site that sells s42 parts, but i can not find it now. all i know is the parts will rape your investments

[Darioush]

bump for an awesome project!

[Schwarz318i]

i also found a site that sells s42 parts, but i can not find it now. all i know is the parts will rape your investments

I know of a site that will sell you S42's but they're 10k a pop, sure they produce 315bhp NA, but they're strictly race engines & meant to be rebuilt and gone through after every race, or every 40 hrs.

I talked about buying one a looong time ago.

So yeah... You'll need large amounts of cash, or love rape.

[DailyE36]

I know of a site that will sell you S42's but they're 10k a pop, sure they produce 315bhp NA, but they're strictly race engines & meant to be rebuilt and gone through after every race, or every 40 hrs.

I talked about buying one a looong time ago.

So yeah... You'll need large amounts of cash, or love rape.

i think that metric mechanic have a good thing going with the 200hp m42 they have. but that engine cost 10k.

[Schwarz318i]

i think that metric mechanic have a good thing going with the 200hp m42 they have. but that engine cost 10k.

Yeah, Its price tag is pretty steep.
And I just cant convince myself that the price tag is reasonable, regardless of how Awesome I think it is.
But if you've got your own shop, and you're very mechanically inclined, you can buy just the parts for 6k, and install them yourself.

[DailyE36]

thats what im going to do when i have the time and money. but ill make a 2L instead of 2.1L and ill do more to the head flow.

[swrmotorsports]

i'd buy a honda civic. For the price of beefing up 1 m42 i could've made a 3 B series motors rev to 10k

[space86]

Hectic thread, i'll be coming here when I can afford going this route

[E36LUVA]

i'd buy a honda civic. For the price of beefing up 1 m42 i could've made a 3 B series motors rev to 10k

Yeah man it's hard to justify such cash for so little gain especially when there's so many other options for the car, although it must be cool as hell driving it with that perfect balanced handling and that screaming 4 banger and oh the sound...

[rockincompact]

mount them to the head please and take some pics already. if the itb's bolt right up, i'll be doing the same for my stroked m44 turbo setup. better yet, have you test fitted them yet, did they fit?

thanks,
john

[m42b18]

mount them to the head please and take some pics already. if the itb's bolt right up, i'll be doing the same for my stroked m44 turbo setup. better yet, have you test fitted them yet, did they fit?

thanks,
john

^ +1, I would love to see the final result, this is going to be one hell of an engine

[Luksa]

sorry, I´m idiot...
i would like to swap M47 crank (88mm) to m42 engine with s50 b30 pistons.Can I use stock m42 rods?

[M Quick]

Pure sexiness!

[stevie171]

hi just reading through ur thread there and im wondering can i put a m42 b18 crank straight into my m44 b19 engine as my crank has seen better days and have an m42 in the shed also have a 98 318i single cam engine there to if that wud work

any input is appreciated thanks

sorry for the highjack :P

[DailyE36]

you can but it will cause problems for the m44 and the dme. the m42 crank has a shorter stroke so the compression will be lower. and the m42 crank does not have the timing wheel on the back of it. for the m42 crank to work in the m44 you need oversized m42 pistons to suit the bore of the m44 block, the front timing case from a m42 for the crank sensor as the m42 crank does not have the rear timing wheel. and the harmonic balancer from a m42. even then the engine may not run properly.
best to find a good used m44 crank and swap it out.

[sjpgoalie]

He could have the head skimmed. Can't you connect the M44 rods to a m42 crank or m42 rods to M44 pistons??

[stevie171]

thanks for the info i can get my hands on an m44 crank that wa pulled out of one but its was outside for a few days before it was put in the shed would that still be ok?

[DailyE36]

He could have the head skimmed. Can't you connect the M44 rods to a m42 crank or m42 rods to M44 pistons??

the m42 and m44 rods are both 140mm long. m44 crank has 83.5mm stroke and m42 has 81mm stroke. skimming the head 2.5mm is probably not a good idea.

thanks for the info i can get my hands on an m44 crank that wa pulled out of one but its was outside for a few days before it was put in the shed would that still be ok?

depends on the condition of the crank. light surface rust can be removed by hand with a clean rag and oil. if the bearing surface on the crank shaft is in good condition than it should be ok to use. if your not sure on what to look for when checking the condition of the crank shaft than have a good look on google.

[stevie171]

il go and collect it in a while and check it, i know roughly what im lookin at
but not a pro

i looked at the crank last week pulled off my sump was fairly handy job,

decided il try changing the crank shaft i must tchange the clutch anyway so i can do 2 jobs at once il let you know how i get on with this crank shaft

thanks for your help lad