850CSi info

[BAC5.3]

Well, more specifically, ANY of the older V12 engine info (5.0L and 5.4L from the old 750iL's, or 5.6L from the 850CSi).

Basically, I could use stock dyno charts.

I also need all the engine specs (size is the key). That's pretty much all I need the size of the engine.

I also need specs on the 6-speed Manual from the 850CSi. Size on that as well, ratios are also helpful.

Thanks for any help!

(for those that are interested in why I need the info, put 2 & 2 together. You'll figure some of it out, I'm sure.)

[SG_M3]

http://www.bmwmregistry.com/model_faq.php?id=11

[BAC5.3]

That's excellent info. Do you happen to know anything about the size of the engine and the tranny?

[Rob ITR1035]

" When creating the 850CSi's S70 V12 motor, BMW Motorsport began with the standard 24-valve SOHC M70 engine and instituted the following changes:
-Increased bore (from 85mm to 86mm) and stroke (from 79mm to 80mm) for a new total displacement of 5,576cc (from 4,988cc)
-Lighter pistons
-Increased compression (from 8.8:1 to 9.8:1)
-More aggressive valve timing for increased high-rpm power
-Larger diameter exhaust pipes
-Variable rpm limit (6,400 in 1st+2nd, 6,200 in 3rd, 6,100 in 4th. 6,000 in 5th+6th)
-Adjustable throttle sensitivity via dual mode (Sport or Komfort) console-mounted switch
-Engine oil cooler (European-spec models only)

These modifications resulted in an increase in maximum power from 300 hp (DIN) or 296 hp (SAE) at 5,200 rpm to 380 hp (DIN) or 372 hp (SAE) at 5,300 rpm. In addition, maximum torque was increased from 332 lb/ft at 4,100 rpm to 402 lb/ft at 4,000 rpm.

This engine can be identified by the "Powered by M" inscription on the central cam cover between the two banks of cylinders.

What kind of gearbox does the 850CSi have?
The sole gearbox offered for the 850CSi was the Getrag Type E six-speed manual with the following ratios: 4.25 (1), 2.53 (2), 1.68 (3), 1.24 (4), 1.00 (5), 0.83 (6). This is mated to a 2.93:1 rear end with limited slip differential. In addition, Automatic Stability Control plus Traction (ASC+T), which can apply the brakes and/or reduce engine power in the event of traction loss, is fitted as standard to the 850CSi. Finally, European-spec models are equipped with a transmission oil cooler."



Copied from the above link. Did you want physical dimensions?

[BAC5.3]

Yes, Physical dimensions. I need to know if the engine will physically fit into the car without firewall modding and still have room for all of the stuff to support the engine (radiator, alternator, those types of things).

[SpeedinBlueBimmer]

oooooOO whats it going into?

[MorningCruiser]

I wonder, maybe a 95 Legacy?

[Chris]

www.e31.net

[BAC5.3]

Not the Subaru

It's SUPER unlikely that it'll happen. But I at least want to know if it's possible. If it is, and I somehow get the funds, then I'll do it. It's really unlikely, but any I really want to know if it can be done and the extent of labor.

I already figure I can run some SDS EFI for fuel contol and cable actuated throttle's instead of the D-B-W that's stock.

Anyone got any info?

[E31]

Try the www.roadfly.org site on the 8 series board. I am sure someone in there has that info. What is the secret project? You do know that a V-12 was fit into a Z3, so I am sure it would go in fine for your application.

[Scorp965]

The V12 has also found its way into an E30, so that has also been proven to be possible...

[MorningCruiser]

Look at it this way: It's not a Ferarri V12, or a north american V10. Or a Lambo V12. Biggest mass produced north american engine is the 8l V10 Magnum from Dodge. That's two litres bigger than the biggest Lambo V12. So the Lambo is 6L, that's 0.5l bigger than the Ferarri V12, at 5.5l, and the BMW engine is a mere 5.0l.

Now, the Dodge V10 Magnum has been fit into a Jeep TJ and YJ before, which both have tiny engine compartments as far as I am concerned, and it hardly fit without mods. Quite possibly the smallest of the engines, to be honest, I've never personally built a Lambo or a Ferarri V12. Never even really looked at them in terms of size. The ferarri and lambo engines however, are screamers, tiny stroke engines which have retarded redlines, so the blocks are in theory, massive. The BMW Engine on the other hand, if not made with this extreme redline in mind, so I'd presume it's a much smaller block, around that of a 383 Dodge block. So, in theory, it will fit.

And if it's been in a z3, it'll fit a legacy.

Edit - bah, typo, stupid 5:00AM

[BAC5.3]

Length wise, the engine is fine. The S70 measures 26" end to end (1.5" shorter than a 302 V8 from a mustang).

It's not the length I am worried about, it's width and height.

The engine wouldn't remain 5.0/5.4/5.7L (whichever it car it comes out of) for long. I'd likely be boring and stroking it to 6.0L. Closest anyone will get to a McLaren engine without dropping a million.

It' ain't goin into the Legacy, that's for sure. Even if it fit, it wouldn't go in the Legacy. I doubt it would fit height wise in the Legacy anyway. Flat engines are significantly shorter than inline or V-form engines. My hood is likely to low (I can measure if anyone is interested).

I don't want to let out what it would go into, just incase it doesn't happen. The space I have to work with hardly fits a 302 without heater-box modding. The engine will fit length wise, but I need to know if mounts will fit, if the tranny will fit into the tunnel, where things are in relation to the stock engine.

Fitting a V12 into where a 3.0L V6 used to sit is going to be a chore... oops, I let out a hint.

If I can get it to run without all the BMW shit (Bosch engine management) and get the numbers crunched, then it'd be a bit more optimistic that it'll pickup and fit into the vehicle. I have a sickening feeling that the bill would run to close to 7k. There's a lot I could do with 7k besides an engine swap, so it's not looking to hopeful.

[E31]

May want to check out this place and see if they give you info on the engine and tranny.

http://www.fabdirect.com/index10.htm

The tranny is a ZF 4-hp24 for your info...ZF may even have stats on their site.

[BAC5.3]

Thanks for all the help!