Then why are you asking if you can reinvent the wheel? Your car is what it
is, and that's all it can be.
If you like the car but want a manual transmission, then sell the car and
buy one that has a manual. It would be cheaper, and the inventing will
already have been done.
Jeff, don't be that way.
The 8 series was a very unique car. The 12 cylinder engine option (850)
means that you get a hand built engine that is very, very, very
expensive (not to mention time consuming) to maintain. The 8 cylinder
option means that you get the engine that was also present in the 540
(and 530) cars and so is not nearly as exotic, nor expensive to
maintain, nor as unreliable.
The problem is the 8 series with the (desirable) 8 cylinder engine only
came with that piece of shit automatic transmission that robs all the
enjoyment of driving and has the propensity of fragging itself at the
drop of a hat due to faulty check valves, among other things. (google:
BMW plastic check valve ball)
So, it is quite natural that someone would want to attach a manual
(preferably 6 speed) transmission to a nice 5 liter V8 engine in an 8
I'd wonder if the clutch pedal/linkage/etc. from the 850 could be mounted to
the 840. then I would search for the 6-speed from a 5 Series that is mated
to the back of a 540.
That's the only way I see this happening.
On Fri, 11 May 2007 11:10:16 +0100, "R. Mark Clayton"
This would be the angle I'd look at doing it. You MAY be able to get
information from the TIS reference on what parts may be needed. If the
UK versions were available with a manual tranny, at least you'd be
able to get the mounts and things. Might have to fabricate this stuff.
As for computers, was the tranny controlled by computer???
BTW - A little research (and a call to a BMW salvage yard) reveals
that the 840's were available with a manual up until 1995. 1996 on was
only offered with the auto. The manual didn't sell well and was
discontinued. Now there's a change. The parts are available for this
conversion but seeing as the manual wasn't a big seller they are going
to be harder to find. The wrecker shows a 94 840 in thier inventory so
I asked him to look into what it is. Will let you know what I learn...
Possibly depends on the age, as there were several transmissions
four speed switchable?
five speed switchable
I don't know if the five speed steptronic made it onto the 8 series - maybe
the last few.
AFAIK all of them used some degree of electronic control (certainly from the
four speed switchable on) and in addition had to interface with the engine
management to dip the throttle during change ups and blip it during change
downs, however on a manual the driver does this while pressing the clutch.
This was the tail end of them - I don't think they were sold much at all
BMW launched various sports models around this time, so the 8 series became
more of a luxury sports coupe (bit like Merc. SEC).
The original 850i manual had a 6 speed box.
At the back of my mind ISTR it being mentioned here before and Brett
Anderson? who owns or works at an independant BMW facility was the one to
ask. Haven't seen him post here recently but a Google should sort things
*A backward poet writes inverse.*
Dave Plowman email@example.com London SW
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