PDA

View Full Version : whats an m3 lightweight?


RevShoT
09-05-2004, 05:03 PM
looking at 1/4 mile times for a 95 m3

says it runs 14.6 but the lightweight m3 in 95 runs 13.9

what the hell is a lightweight m3?

does that mean gutted?

Understated
09-05-2004, 05:08 PM
CSL i assume

RevShoT
09-05-2004, 05:39 PM
what the hell is CSL

someone speak english!

ZiMMie
09-05-2004, 05:40 PM
M3CSL

RevShoT
09-05-2004, 05:41 PM
and what the hell is that?

Mitch555
09-05-2004, 05:47 PM
Originally posted by RevShoT
what the hell is a lightweight m3?


In 1995, BMW produced a limited number of lightweight M3's. The factory started with an E36 M3 and then removed practically everything not needed for competition. They are called CSL's (Coupe Sport Light). The M3 Lightweights were reduced weight vehicles, yet they were fully equipped for the road. They were only made in Alpine White with Motorsport racing flags on the front and rear. The 1995 BMW M3 Lightweight was an E36 M3 designed for performance enthusiasts and racing teams. This M3 was modified and specially equipped to be a base production car for drivers and teams competing in motorsport events. Yet the car had to be capable of being driven on the road.

Here's what was eliminated:

Air conditioning
Leather seats
Sunroof
Radio
Tool kit
Interior noise reduction mats
Underhood insulation
Trunk panel insulation
Forged wheels
Spare tire and jack

Here's what was retained:

Dashboard
Heater
Power windows (The power windows were kept since they were necessary for BMW's unique door glass sealing system)

Here's what was added to the vehicle:

Aluminum doors
Special carpeting
Carbon fiber trim
Sport suspension
Revised rear axle ratio of 3.23:1
A large strut brace connecting the front shock towers
An X-brace assembly to hold the entire front end together (The underbody X-Brace and Motorsport strut brace were included to stiffen the front chassis to counteract the body flex that can occur during cornering)

The weight savings was about 200 to 300 pounds over a stock M3. The savings varied depending on which of the performance options were added by the customer.

BMW took other steps to improve the performance and handling of the car:

To improve performance, the M50 B30 3.0-liter engine was hand picked by BMW engineers. Reportedly, production engines were tested, and only those with the best performance numbers found their way into the M3 Lightweight.
The top speed limit was removed from the ECU.
The rear differential was increased to 3.23 over the 3.15 found on the stock M3. This increase improved the low-end torque, providing quicker acceleration.
To improve the handling, stiffer springs were standard and a strut brace was installed. A common add-on for BMW's, the brace connects the front shock towers to make the car more rigid. An adjustable air dam in conjunction with a rear spoiler was also included to increase down force.

Designed for racing only, the performance options were:

An oil pan with a dual pickup. The dual pickup helped ensure constant oil flow in hard cornering.
A non-DOT spoiler to increase down force. The spoiler does have a penalty of a few mph at high speeds.
The spoiler included an upper GT Race wing with two spacers. The spacers could be used to raise the upper wing further into the air stream if desired, like in the above picture.

The M3 Lightweight also had several lesser-known standard features including:

An oil vapor separator to reclaim oil that would otherwise burn off under high temperatures.
A unique set of lightweight, forged 17" alloy wheels.
Firmer springs than the stock M3.

In the 1995 model year, BMW only produced 120 to 125 of these cars. Only 85 cars made it to the USA. It is only recently that enthusiasts have recognized these cars for what they're worth, and today they are in high demand and quite collectible. Rarely do you see one for sale.

magnus
09-05-2004, 05:48 PM
BMW made two special versions of the e36 M3.
The M3R was produced in limited numbers for Australia with less sound insulation and different material on various parts including thinner windows. It had the euro spec 3.0 motor but produced 315bhp.
for europe the BMW E36 M3 GT 3.0 Limited Edition (295 hp) was made available in only green with green suede seats and carbon dash inserts.
For north america they released a small number of BMW E36 M3 Lightweight US (240 hp) as a car to be used mainly as a track car and hence more focused.
However the rerest of them all was the 320iS e36 with the S14 engine from the e30 M3 that reached a number of 38 cars as to allow the BMW DTM team to race an e36 since the rules only allowed a 2.olt capacity.

magnus
09-05-2004, 05:55 PM
The M3 Lightweights were reduced weight vehicles, yet they were fully equipped for the road. They were only made in Alpine White, with colorful Motorsport racing flags on the front and rear. Today, the Lightweights are the rarest of the late model M3's
Here's what was eliminated:

air conditioning
leather seats
sunroof
radio
took kit
interior noise reduction mats
underhood insulation
trunk panel insulation
forged wheels
spare tire and jack

Here's what was added to the vehicle:

aluminum doors
special carpeting
carbon fiber trim
sport suspension
revised rear axle ratio of 3.23:1
a large strut brace connecting the front shock towers
an X-brace assembly to hold the entire front end together

The weight savings was about 200 to 300 pounds over a stock M3. The savings varied depending on which of the performance options were added by the customer
To improve performance, the M50 B30 3.0-liter engine was hand picked by BMW engineers. Reportedly, production engines were tested, and only those with the best performance numbers found their way into the M3 Lightweight.
The top speed limit was removed from the ECU.
The rear differential was increased to 3.23 over the 3.15 found on the stock M3. This increase improved the low-end torque, providing quicker acceleration.
To improve the handling, stiffer springs were standard and a strut brace was installed. A common add-on for BMW's, the brace connects the front shock towers to make the car more rigid. An adjustable air dam in conjunction with a rear spoiler was also included to increase down force.
BMW placed several options in the trunk, which the user could install if desired. Why did they put them in the trunk? Because if BMW found out they were installed, it would void your warranty!
Designed for racing only, the performance options were:

An oil pan with a dual pickup. The dual pickup helped ensure constant oil flow in hard cornering.
A non-DOT spoiler to increase down force. The spoiler does have a penalty of a few mph at high speeds.
The spoiler included an upper GT Race wing with two spacers. The spacers could be used to raise the upper wing further into the air stream if desired, like in the above picture.

The M3 Lightweight also had several lesser-known standard features including:

An oil vapor separator to reclaim oil that would otherwise burn off under high temperatures.
A unique set of lightweight, forged 17" alloy wheels.
Firmer springs than the stock M3.
In the 1995 model year, BMW only produced 120 to 125 of these cars. Only 85 cars made it to the USA. It is only recently that enthusiasts have recognized these cars for what they're worth, and today they are in high demand and quite collectible. Rarely do you see one for sale.


http://www.bmwworld.com/models/m3_ltw.htm

I hope that helps

RevShoT
09-05-2004, 05:58 PM
awww that makes much more sence guys thanks!!

so this winter im dropping in a stock m3 engine from a 95 with 5 spd tranny, my rear end is a 3:91 gear ratio

what kind of times can i expect to run at the track this summer?

TiemenT
09-05-2004, 08:07 PM
I love CSL's :D

here are some photo's of mine.. (http://members.home.nl/carbase/csl/)

RevShoT
09-05-2004, 08:30 PM
pure sickness!

Justin e36
09-05-2004, 10:02 PM
there's a M3 LTW here in Toronto.. the guy removed the front decals, added an ugly rear spoiler too. I saw it at Charlie (bimmersport's) house. The guy really didn't know much about the car himself... he's not much of a BMW enthusiast it seems. (unfortunate!) ... but those aluminum doors make a huge difference... it was like a feather opening and closing those things.. I couldn't believe it. Like my pinky finger would slam it shut. :P

///m powered
09-06-2004, 02:52 AM
this should be in FAQ :)

EL'ation
09-07-2004, 12:55 AM
What are the differences b/w E46 M3 and CSL

TiemenT
09-07-2004, 01:22 PM
^ just read !

The M3 Lightweights were reduced weight vehicles, yet they were fully equipped for the road. They were only made in Alpine White, with colorful Motorsport racing flags on the front and rear. Today, the Lightweights are the rarest of the late model M3's
Here's what was eliminated:

air conditioning
leather seats
sunroof
radio
took kit
interior noise reduction mats
underhood insulation
trunk panel insulation
forged wheels
spare tire and jack

Here's what was added to the vehicle:

aluminum doors
special carpeting
carbon fiber trim
sport suspension
revised rear axle ratio of 3.23:1
a large strut brace connecting the front shock towers
an X-brace assembly to hold the entire front end together

The weight savings was about 200 to 300 pounds over a stock M3. The savings varied depending on which of the performance options were added by the customer
To improve performance, the M50 B30 3.0-liter engine was hand picked by BMW engineers. Reportedly, production engines were tested, and only those with the best performance numbers found their way into the M3 Lightweight.
The top speed limit was removed from the ECU.
The rear differential was increased to 3.23 over the 3.15 found on the stock M3. This increase improved the low-end torque, providing quicker acceleration.
To improve the handling, stiffer springs were standard and a strut brace was installed. A common add-on for BMW's, the brace connects the front shock towers to make the car more rigid. An adjustable air dam in conjunction with a rear spoiler was also included to increase down force.
BMW placed several options in the trunk, which the user could install if desired. Why did they put them in the trunk? Because if BMW found out they were installed, it would void your warranty!
Designed for racing only, the performance options were:

An oil pan with a dual pickup. The dual pickup helped ensure constant oil flow in hard cornering.
A non-DOT spoiler to increase down force. The spoiler does have a penalty of a few mph at high speeds.
The spoiler included an upper GT Race wing with two spacers. The spacers could be used to raise the upper wing further into the air stream if desired, like in the above picture.

The M3 Lightweight also had several lesser-known standard features including:

An oil vapor separator to reclaim oil that would otherwise burn off under high temperatures.
A unique set of lightweight, forged 17" alloy wheels.
Firmer springs than the stock M3.
In the 1995 model year, BMW only produced 120 to 125 of these cars. Only 85 cars made it to the USA. It is only recently that enthusiasts have recognized these cars for what they're worth, and today they are in high demand and quite collectible. Rarely do you see one for sale.


http://www.bmwworld.com/models/m3_ltw.htm

I hope that helps

magnus
09-07-2004, 04:13 PM
[QUOTE]Originally posted by TiemenT
[B]^ just read !

He asked about the e46 and the CSL, what i wrote is about e36 and Lightweight.

CSL is an E46 with a carbon roof and light composite material made boot floor. It also develops slightly more power due to the induction rework and remap. The front bumper and boot door are also different. It has a carbon interior as well and its got no interior option to add more weight. In other words its a tuned E46 M3 that has gone on a diet.

TiemenT
09-07-2004, 06:04 PM
^ aah.. I see.. i'll take it back then !