> SIMILAR TOPIC: DCOEs are a very nice and flexible carb for different
> configurations/ engine modifications--sometimes too flexible. Does
> anyone have the complete configuration for a DCOE that you feel gives
> good performance? I have a 73B with a new rebuild and have installed a
> 45DCOE. I had changed from the original config with air horns to one
> recommended in the Webber manual without horns to use a filter. The
> result was a very high idle. I have yet to drive it as I'm still
> finishing the body work during restoration. Any good configurations out
> there?
> John Knight
> '73 MGB (undergoing restoration)
Well, that's the eternal struggle with Webers--there are at least a half
dozen things that are easily changed, from venturi size to idle, air, and
main jets, but almost nothing that adjusts (everything is done by
replacing parts). If I were to make one suggestion, it would be to make
sure that your 45 DCOE is running with 32mm venturis. This gives better
low and midrange power than larger venturis (and not many MGBs regularly
rev past 6000 or 6500). Mine used to have 36 or 38 ( i forget which ) and
it felt a little sluggish below 4000 or 4500. That's probably the most
important thing you can do. If I were to make a second recommendation,it
would be that you pick up a good book on webers -- Haynes manual or John
Passini's book ontuning webers. Make sure you understand the implications
of changes before you make them.
Once you get a good setup, though, you're golden. very little to wear out
(certainly no needles), and a well adjusted carb that is at home anywhere
from 0-100 degrees f, from sea level to 12k feet.
Good luck, and safety fast.
Matt
'70 B
|