newbie question about M40 /M42

[sam1741]

hi all....newbie here......sorry if my question seems stupid....i try to google around but cannot find any answers.....hope someone here can help me...in Malaysia....is it all E36 fitted with M40 engine..?is there any that fit with M42..or M43, M44...i a bit confused..may i ask anyone can teach me how to differentiate them... when looking at them..?thanks in advance..

 

[jarance]

E36 - before 1994 - fitted with M40 engine.. after 1995 - fitted with M42 engine

 

[BMWer]

Dear sam1741, see this:

http://www.bmwclubmalaysia.com/forums/showthread.php?t=21333

 

[Van1ty]

Don't forget about the M50s and the S50s. =p

 

[fabianyee]

E36 - before 1994 - fitted with M40 engine.. after 1995 - fitted with M42 engine

Not the DOHC 16v M42.. it's the SOHC 8v M43..

M40 SOHC 8v (found in E30 318i and pre-95 E36 318i)

M43 SOHC 8v (found in post 95 E36 318i)

M42 DOHC 16v. Have similar intake manifold to the M43 but can see the difference in the cylinder head size.
Found in pre-96 318is and 318ti)

M44 1.9l DOHC 16v
Similar to the M42 but uses OBD2 instead of OBD1 and MAF instead of AFM.
Found in post-96 318ti, 318is and some Z3. However, most 1.9 Z3 we have here in malaysia are fitted with the SOHC M43TU 1.9l...

Bonus pic.
This is a Z3 with the M44 1.9l engine fitted with a Downing Atlanta supercharger boasting the power to 190hp from 140hp..

 

[sam1741]

wow.. thanks a lot everyone and fabian....

so our local E36 got either M40 or M43 engine...

if can transplant M42.. that means got the engine of a Z3........

 

[fabianyee]

so our local E36 got either M40 or M43 engine...

both oso got, depending on the year..

if can transplant M42.. that means got the engine of a Z3........

Z3 uses the M44... But then M42 is the preferred engine for those wanting to mod further...

 

[RRRR]

Not the DOHC 16v M42.. it's the SOHC 8v M43..

M40 SOHC 8v (found in E30 318i and pre-95 E36 318i)

M43 SOHC 8v (found in post 95 E36 318i)

M42 DOHC 16v. Have similar intake manifold to the M43 but can see the difference in the cylinder head size.
Found in pre-96 318is and 318ti)

M44 1.9l DOHC 16v
Similar to the M42 but uses OBD2 instead of OBD1 and MAF instead of AFM.
Found in post-96 318ti, 318is and some Z3. However, most 1.9 Z3 we have here in malaysia are fitted with the SOHC M43TU 1.9l...

Bro fabian

Can you post the pic of the M42 again, I cant see the pic... I am guessing it probably looked exactly like the M43 but just need ot be sure... :embarassed:

Thanks!

 

[flash]

I think Fab's E30 is having the M42. He did a post a picture of his engine bay in another thread a few days back.

Bro fabian

Can you post the pic of the M42 again, I cant see the pic... I am guessing it probably looked exactly like the M43 but just need ot be sure... :embarassed:

Thanks!

 

[fabianyee]

Bro fabian

Can you post the pic of the M42 again, I cant see the pic... I am guessing it probably looked exactly like the M43 but just need ot be sure... :embarassed:

Thanks!

Photo was linked from somewhere in the vast vast space called the world wide web... Probably the link is dead...

M43 is SOHC lah (Single OverHead Cam), the cylinder head is smaller...
The M42 looked similar to like tthe M44 which is the last pic which is a DOHC (Double OverHead Cam)...

 

[elwine30]

The M43TU is also available in the prefacelift E46. It's 1.9 with MAF plus other small tweaks

 

[RRRR]

The M43TU is also available in the prefacelift E46. It's 1.9 with MAF plus other small tweaks

Correct me if I m wrong - But the M43TU is 8 valves & not as good as as the M42 (with 16 valves) rite?

thks

 

[elwine30]

both is ok. just that 16 valve and DOHC gives more power and higher revs.

 

[sam1741]

hi all....
i wan to ask

between M42 and M44 which one is better?
the M44 is a newer engine right?
but i saw many ppl converting engine, they prefer M42

 

[fabianyee]

both oso good but M42 has better mod potential being OBD1..
M42 has forged steel crankshaft with 8 counter balances.
M44 has cast iron crankshaft with 4 counter balances.

If you're not mod kaki, either one oso work...

 

[sam1741]

oic.. thanks
so forged crankshaft will be stronger than cast iron one right?

 

[elwine30]

i believe if u search hard enuff in www, you will most mods r done on m42. fab has given the reason and difference between them. .

 

[dutchbmwe36]

hello all im from the netherlands and i see on this forum a supercharger for a bmw e36 m40
i have a m40 318i from 1993 and i like the supercharger where can i find the website for this product ?
and how much is it ? thanks greatz ramon for holland