WSpohn4@aol.com wrote:
>In a message dated 21/08/02 10:32:32 AM Pacific Daylight Time,
>
>> We recently became the owner of a pair of new 45DCOE
>> carbs to use on our BMW 1600-2 rally car.
>
> How would YOU jet these carbs to
>> optimize performance in the 4k to 5.5k rpm range on this or
>> your MG engine?
>
>This is a totally meaningless question and anyone that tries to answer it
>will be offering information with zero value.
>First, go buy a Weber book and find out what the settings for a BMW engine of
>your state of tune might be (you don't bother offering cam information). That
>is only a very basic guide to what size venturis and what other settings you
>may want to try. Then have an expert do the tuning.
>
>Please believe me - if you have no specialised knowledge, Webers are NOT the
>carbs to start trying to tune by guess, and by misinformation.
>
>Bill
>(10 Webers currently in use)
I love this list, and the diversity of its members, and all of the experience
and thought that is here accumulated. And I love having people as intelligent
as Bill with whom to disagree.
Actually, I'll only partially disagree. Rick, by all means, buy a book or two
on Webers. But here's the disagreement part: if a reasonably intelligent
person devotes a little time to studying them, there's no reason they can't
achieve a quite satisfactory result with Webers. And, since Rick is talking
about building a rally motor, he probably wants mid-range torque, and
smoothness, as opposed to all-out maximum power at redline.
Though maybe I'm too much a weber guy already if I'm calling 5k mid-range; but
I digress.
Webers aren't rocket science or brain surgery, but I'd wager that there are
members here capable of comprehending (and probably practicing) those
disciplines as well.
My recommendations:
1. Buy a book
2. Get either 28mm (smallest available) or 30mm chokes for your webers. This
is the most important step in making the engine do what you want it to.
-Matt (only 4 webers at the moment)
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