OT: M70 V12 in a Cobra Replica - pics

[shogun]

http://www.bimmerboard.com/forums/posts/425720

The story about the engine rebuild by Cor is here
http://bmwe32.masscom.net/sean750/engineRebuildM70/M70rebuild_1.htm

[Ross]

Somebody post the pics of the Datsun chassied "Ferrari" the two girls built with BM V-12 power.

[Jon K]

The m70 is a very popular replicar motor because it has the sound of a V12 (obviously) without the cost. There are a couple around the NE US in lamborghini and ferrari replicas

[fin]

There's a 1991 750i in the u-pull-r-parts lot in Rosemount MN.

Hummmmm.

Fin

[Ross]

The BM's crankpins are arranged differently giving the M70 the wrong cadence to sound like Ferrari's twelve.

[Jon K]

A lot of the ferrari sound is emitted by it's drivetrain as well. I was thoroughly not impressed when my friend was revving his 355 F1. Then we drove it... and it made more sense.

[rob101]

uh? ferrari v12s have the same firing order as the m70
or at least the early ones do

m70 Firing Order: 1-7-5-11-3-9-6-12-2-8-4-10
365 gtc v12 firing order 1-7-5-11-3-9-6-12-2-8-4-10
both are 60 degree.
Is there something i am missing about their cadence and thus sound being different? perhaps the more recent ferraris have different angle in the V.

[repenttokyo]

A lot of the ferrari sound is emitted by it's drivetrain as well. I was thoroughly not impressed when my friend was revving his 355 F1. Then we drove it... and it made more sense.


355 = V8, not V12.

[shogun]

http://members.core.com/~sysadmin/personal/GTO-VA0038.jpg
more pics
http://www.bimmerboard.com/forums/posts/164999/
http://www.bimmerboard.com/forums/posts/166535
dry sump
engine is upside down but here's the new oilpan and second pic is the original pan.

http://members.core.com/~sysadmin/personal/GTO-drysump10.jpg
http://members.core.com/~sysadmin/personal/BMW_oila.jpg
mooooore pics
http://members.core.com/~sysadmin/personal/
In a normal wet sump oiling system there is a oil pump inside the engine in a wet (oil filled) pan. The oil that isn't under pressure in the engine is in a pan at the bottom of the engine. In a dry sump system any oil that has drained to the bottom of the engine is sucked out by an external pump and stored in an external tank. Doing this allows the engine to be closer to the ground because there doesn't need to be a pan to store it. The stock pan on the bottom of most engines has to be big enough to hold 4-5 quarts of oil. The use of an external tank allows the oil to cool down and allows air bubbled to dissipate, which means there is a better chance of an uninterrupted flow of oil at all times. AND keeping the oil away from the bottom of the engine keeps it off the crankshaft which also helps improve power.
The downside is it's expensive, but what isn't on these engines? lol
Chelle runs a 3 stage external pump (two sections suck oil out of the engine, one pumps it in) two filters and a three gallon tank.
(comments were made by Chelle)