Click to go to Forum Home Click to go to maXbimmer Home

Go Back   maXbimmer Forums > maXimum Tech > 3 Series > E36 (1991 - 1999)
User Name
Password


Welcome to Maxbimmer.com!

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

Reply
 
Thread Tools Rate Thread Display Modes
Old 01-04-2006, 09:29 AM   #1
uber e36
6th Gear Member
 
uber e36's Avatar
 
Join Date: May 2004
Location: Toronto
Posts: 2,050
'92 325i (M50) benefits?

Hey guys,

What are the benefits of the '92 M50 vs. later M50s? And was there a hp or torque difference?

Thanks,

-Geoff
__________________
Daily: '06 S4
Wife: '05 X5 4.4i
Fun: '95 325is
uber e36 is offline   Reply With Quote
Old 01-04-2006, 09:58 AM   #2
Justin e36
---
 
Justin e36's Avatar
 
Join Date: May 2003
Location: etobicoke
Posts: 12,331
Send a message via ICQ to Justin e36 Send a message via AIM to Justin e36 Send a message via Yahoo to Justin e36
Quote:
Originally Posted by geoff@bmw
Hey guys,

What are the benefits of the '92 M50 vs. later M50s? And was there a hp or torque difference?

Thanks,

-Geoff
I believe you mean M50 non-vanos compared with M52 vanos engines.

It depends really because the M50 came in 320/325 (520/525) and the M52 came in 320/323/325/328 (520/525/528) configurations. I'm not sure which ones you want to compare. There may be other configurations too, but I think that was all?

This should help though... M52 Specs vs M50 Specs.

J
Justin e36 is offline   Reply With Quote
Old 01-04-2006, 01:08 PM   #3
uber e36
6th Gear Member
 
uber e36's Avatar
 
Join Date: May 2004
Location: Toronto
Posts: 2,050
Justin,

Isn't the M50 a 2.5 and the M52 a 2.8?

Also, I'm pretty sure there's something about a '92 M50 that makes it different from the +92 M50s? (thicker walls, rods, double springs, etc)
__________________
Daily: '06 S4
Wife: '05 X5 4.4i
Fun: '95 325is
uber e36 is offline   Reply With Quote
Old 01-04-2006, 01:09 PM   #4
Soldo
6th Gear Member
 
Soldo's Avatar
 
Join Date: Oct 2002
Location: Toronto
Posts: 12,485
I think he is refering to just the 2 M50 engine options!

I believe the power was the same, but the VANOS M50 came with more torque..... the only benefit that i've know/heard of, is that the NON VANOS M50 motors came with dual valve springs, which help make the engine more rev happier (one the limiter is removed!)
__________________
Keven Soldo
Soldo is offline   Reply With Quote
Old 01-04-2006, 04:29 PM   #5
propr'one
op sucks cock
 
propr'one's Avatar
 
Join Date: Jun 2004
Location: T.
Posts: 17,597
Send a message via MSN to propr'one
there are different kinds of m50's and m52's

for instance, i have an m50b28 (cause i have teh l33t0r 2.8 litre( i want a s52))

anyways, you can also have m52b25, m52b20, etc
last 2 digits is usually displacement
__________________

Hot: 2001 Estoril M RoadsterZCP 19's, ZHP knob, JL 8W3
Cold: 2002 TiAg M3 6mt ZCP 19's supersports, ZHP knob, UUC short shift GROM, OEM 18's w310's,
http://absolutehid.ca hid kit
propr'one is offline   Reply With Quote
Old 01-04-2006, 05:22 PM   #6
PedroBMW
Hooked on Boost
 
PedroBMW's Avatar
 
Join Date: Oct 2005
Location: Windsor, Ontario
Posts: 1,208
I can testify that the 92 325is 2.5L(non-vanos) is noticiably more rev-happy than the m50 2.5L WITH vanos. The vanos engine is more driveable though than the non-vanos. I had a 92 325is and it was lots of fun when the revs were up, my cousin had a 94 with (vanos), so I had quite a bit of experience with it too. I think the max horsepower and torque are the same for both, just the delivery is different.
__________________


http://www.foldingtrailers.ca
PedroBMW is offline   Reply With Quote
Old 01-04-2006, 09:25 PM   #7
thinair
moderationistismingly
 
thinair's Avatar
 
Join Date: Dec 2001
Location: Bradford, ON
Posts: 8,790
Send a message via ICQ to thinair Send a message via MSN to thinair
Ok, M50B25, thicker valve stems, hotter cams, double valve springs, no VANOS. They do have limiters, I don't know where that came from.

M50B25tu, VANOS engine
M50B20, 320 engine
M50B30, 95 NA M3 engine
M52B28, 328 engine with VANOS, forged crank
M52B25, 323 engine, detuned 2.5L
M50B28, doesn't exist.
M52B32, 96-99 NA M3 engine
__________________
"Driving is like a narcotic, an addiction that can take over lives. It ruins people, breaks families apart, and even kills. Itís habit that needs to be fueled. Time, money, rationality, sweat, knuckle skin, and anyone who disapproves are of little importance to a driver, and are often overlooked. Hi, Iím Nelson, and Iím a drivaholic."
thinair is offline   Reply With Quote
Old 01-04-2006, 10:56 PM   #8
uber e36
6th Gear Member
 
uber e36's Avatar
 
Join Date: May 2004
Location: Toronto
Posts: 2,050
Quote:
Originally Posted by thinair
Ok, M50B25, thicker valve stems, hotter cams, double valve springs, no VANOS. They do have limiters, I don't know where that came from.

M50B25tu, VANOS engine
M50B20, 320 engine
S50B30, 95 NA M3 engine
M52B28, 328 engine with VANOS, forged crank
M52B25, 323 engine, detuned 2.5L
M50B28, doesn't exist.
S52B32, 96-99 NA M3 engine
Thinair,

Am I wrong in making the above changes?

Also, how come 325 isn't listed there?

-Geoff
__________________
Daily: '06 S4
Wife: '05 X5 4.4i
Fun: '95 325is
uber e36 is offline   Reply With Quote
Old 01-04-2006, 11:11 PM   #9
thinair
moderationistismingly
 
thinair's Avatar
 
Join Date: Dec 2001
Location: Bradford, ON
Posts: 8,790
Send a message via ICQ to thinair Send a message via MSN to thinair
Depends on who you ask, technically yes, you're wrong. The North American e36 M3 engines aren't real Motorsport engines. They're M50 and M52 based engines. The S50 engine used in the rest of the world is the real Motorsport engine.

If you use a european BMW parts catalog, the NA M3 engine is listed as M50 and M52. I've seen it with my own eyes at a dealer in Portugal.

The 2.5L engines were listed, M50B25 (91-92), and M50B25tu (93-95).
The number after the B is the engine displacement. M50B25 is 2.5L, M52B28 is 2.8L.
__________________
"Driving is like a narcotic, an addiction that can take over lives. It ruins people, breaks families apart, and even kills. Itís habit that needs to be fueled. Time, money, rationality, sweat, knuckle skin, and anyone who disapproves are of little importance to a driver, and are often overlooked. Hi, Iím Nelson, and Iím a drivaholic."
thinair is offline   Reply With Quote
Old 01-05-2006, 01:41 AM   #10
Soldo
6th Gear Member
 
Soldo's Avatar
 
Join Date: Oct 2002
Location: Toronto
Posts: 12,485
Quote:
Originally Posted by thinair
Ok, M50B25, thicker valve stems, hotter cams, double valve springs, no VANOS. They do have limiters, I don't know where that came from.

M50B25tu, VANOS engine
M50B20, 320 engine
M50B30, 95 NA M3 engine
M52B28, 328 engine with VANOS, forged crank
M52B25, 323 engine, detuned 2.5L
M50B28, doesn't exist.
M52B32, 96-99 NA M3 engine

Can any of these parts be swapped/frankensteined into an engine to make for more power...... like can i put the hotter cams from a non vanos M50 into a vanos one, with the forged crank from a 328?
__________________
Keven Soldo
Soldo is offline   Reply With Quote
Old 01-05-2006, 01:55 AM   #11
thinair
moderationistismingly
 
thinair's Avatar
 
Join Date: Dec 2001
Location: Bradford, ON
Posts: 8,790
Send a message via ICQ to thinair Send a message via MSN to thinair
Quote:
Originally Posted by Soldo
Can any of these parts be swapped/frankensteined into an engine to make for more power...... like can i put the hotter cams from a non vanos M50 into a vanos one, with the forged crank from a 328?
Non Vanos cams can't be swapped into any other motor

The 3L crank can be swapped into the 2.5L and 2L blocks, the 3.2L crank can be swapped into the 2.8 and 2.5 (323i) blocks.

My dream, if I had too much money would be this, the aluminum 2.8L block (from the Z3, 528, euro 328), 3.2L crank, 3.2L head, proper forged rods, and aluminunm pistons. But financially it would make no sense to do that.
__________________
"Driving is like a narcotic, an addiction that can take over lives. It ruins people, breaks families apart, and even kills. Itís habit that needs to be fueled. Time, money, rationality, sweat, knuckle skin, and anyone who disapproves are of little importance to a driver, and are often overlooked. Hi, Iím Nelson, and Iím a drivaholic."
thinair is offline   Reply With Quote
Old 01-05-2006, 08:56 AM   #12
uber e36
6th Gear Member
 
uber e36's Avatar
 
Join Date: May 2004
Location: Toronto
Posts: 2,050
Quote:
Originally Posted by Soldo
Can any of these parts be swapped/frankensteined into an engine to make for more power...... like can i put the hotter cams from a non vanos M50 into a vanos one, with the forged crank from a 328?

From what I've read, a common setup is:

M52B28
with:
M52B32 cams
with:
M50B25 manifold
__________________
Daily: '06 S4
Wife: '05 X5 4.4i
Fun: '95 325is
uber e36 is offline   Reply With Quote
Old 01-05-2006, 10:21 AM   #13
SickFinga
Moderator
 
SickFinga's Avatar
 
Join Date: Jan 2002
Location: Location:
Posts: 16,368
Quote:
Originally Posted by thinair
Depends on who you ask, technically yes, you're wrong. The North American e36 M3 engines aren't real Motorsport engines. They're M50 and M52 based engines. The S50 engine used in the rest of the world is the real Motorsport engine.

Us spec e36 m3 uses real BMW M GmbH engines.
Not all BMW M GmbH engine are S. A good example is BMW M1 that has M88 engine.
Yes its true though, Us spec spec engines are based on M50/M52 and not all new engine like S50.
SickFinga is online now   Reply With Quote
Old 01-05-2006, 10:24 AM   #14
SickFinga
Moderator
 
SickFinga's Avatar
 
Join Date: Jan 2002
Location: Location:
Posts: 16,368
Quote:
Originally Posted by thinair
M50B25tu, VANOS engine
M50B20, 320 engine
M50B30, 95 NA M3 engine
M52B28, 328 engine with VANOS, forged crank
M52B25, 323 engine, detuned 2.5L
M50B28, doesn't exist.
M52B32, 96-99 NA M3 engine
There is also M50B20TU, vanos one.

and Im sure you just made a mistake, M52B25 is a detuned 2.8 engine
SickFinga is online now   Reply With Quote
Old 01-05-2006, 12:12 PM   #15
thinair
moderationistismingly
 
thinair's Avatar
 
Join Date: Dec 2001
Location: Bradford, ON
Posts: 8,790
Send a message via ICQ to thinair Send a message via MSN to thinair
Quote:
Originally Posted by geoff@bmw
From what I've read, a common setup is:

M52B28
with:
M52B32 cams
with:
M50B25 manifold
that is my current setup, with software
Quote:
Originally Posted by SickFinga
There is also M50B20TU, vanos one.

and Im sure you just made a mistake, M52B25 is a detuned 2.8 engine
no, the M52B25 is a 2.5L engine, it puts out a less power then the M50B25 from the 325/525.
__________________
"Driving is like a narcotic, an addiction that can take over lives. It ruins people, breaks families apart, and even kills. Itís habit that needs to be fueled. Time, money, rationality, sweat, knuckle skin, and anyone who disapproves are of little importance to a driver, and are often overlooked. Hi, Iím Nelson, and Iím a drivaholic."
thinair is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


All times are GMT -4. The time now is 11:42 PM.


Powered by vBulletin® Version 3.8.1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.