What is the weight of the M3 motor?

[BForbes]

Addressed to the owners and enthusiasts of perfection:

What is the weight of the powerplant powering your vehicles? Many sources indicate it being around 440lbs.

[lucid]

Won't be easy getting a straightforward answer as it depends on the fluids--if any--and accessories/fluid lines/wiring, etc that are included...

[BForbes]

Very true. Thanks, Lucid

[mkoesel]

Are you asking if someone has actually weighed one on a scale (or alternatively, weighed the car with and without the motor in it)? You might check with the stroker vendors as they have probably weighed the engine before. Failing someone like that coughing up the info, I would assume that the oft-quoted 440lb weight is about as precise as you will get.

Any particular reason why you are asking? Just curious.

[mPlasticDesign]

It is a well-known fact that the V8 S65 weighs less than the I6 S54. 33lbs to be exact. BMW quotes the V8 weight at 445lbs. And to all the torque naysayers,

"The second factor crucial to thrust and performance on the road, engine torque, amounts to a mighty 400 Newton-metres or 295 lb-ft at 3, 900 rpm on the new V8 power unit. And about 85 per cent of the engine’s maximum torque is available throughout the enormous engine speed range of 6,500 rpm, with 340 Newton-metres or 251 lb-ft available from just 2,000 rpm. "

SOURCE:

http://www.autospies.com/news/The-BM...-The-M3-13593/

[Griz]

I seem to remember PencilGeek providing some detailed numbers for the RDSport build.

[BForbes]

Originally Posted by mkoesel

Are you asking if someone has actually weighed one on a scale (or alternatively, weighed the car with and without the motor in it)? You might check with the stroker vendors as they have probably weighed the engine before. Failing someone like that coughing up the info, I would assume that the oft-quoted 440lb weight is about as precise as you will get.

Any particular reason why you are asking? Just curious.

I was asking for the manufacturers official weight numbers. The 2011 Mustang's 5.0liter motor weighs 430lb and produces similar power. I was just curious as to how they relate. Thanks for all the help.

[mkoesel]

Originally Posted by BForbes

I was asking for the manufacturers official weight numbers. The 2011 Mustang's 5.0liter motor weighs 430lb and produces similar power. I was just curious as to how they relate. Thanks for all the help.

Oh. Yeah, I started a thread about the Coyote in the vs. forum if you are curious.

The reality is, most modern V8s made of the same material (and using the same form of aspiration) are going to weigh about the same. Deck heights and bore spacing will vary slightly, but that is minimal. Things like an iron block or heads will obviuosly kill the weight, which is why the S54 is a pig (iron block). Also, it is possible to increase displacement of a given motor while at the same time making it lighter. I'll bet that the Coyote is lighter than the old 4.6L 4V MOD for example (I know it is heavier than the outgoing 3V MOD motor).

[Griz]

Originally Posted by PencilGeek

That was only for the crank, rods, and piston/wrist pin assemblies.

Jeez, what good are you anyway?

[BForbes]

Originally Posted by mkoesel

Oh. Yeah, I started a thread about the Coyote in the vs. forum if you are curious.

The reality is, most modern V8s made of the same material (and using the same form of aspiration) are going to weigh about the same. Deck heights and bore spacing will vary slightly, but that is minimal. Things like an iron block or heads will obviuosly kill the weight, which is why the S54 is a pig (iron block). Also, it is possible to increase displacement of a given motor while at the same time making it lighter. I'll bet that the Coyote is lighter than the old 4.6L 4V MOD for example (I know it is heavier than the outgoing 3V MOD motor).

Hmm..I did not know that. Sounds about right. The LS3, S65, and Coyote are indeed within 15 pounds of each other.