>
> Does anyone have any experience tuning a Weber DGV? I have it
> installed on a 1980 MGB. What's the verdict on Color Tune? Does it
> work well? What's a good price for it? And last are there any tips to
> using the Color Tune that anyone can give me?
>
> Chris
I've set up too many of those things. The final setup varies drasticly
bepending on which manifold, header, exhaust, cam, compression, air filter,
distributor, etc. are used. In other words, no two will be the same. The
little bit of advice I can give is:
The jetting will be wrong. There are six that can easily be changed.
Ignore it and live with what you get, or tinker. Best bet is to find
someone with a stock of jets and a chassis dyno.
The accelerator pump jet is way too small. It's like .3mm, and will end up
some where around .9mm. In reality, the bleed off jet is wrong too,
but it's too much hassle to change for the small gain.
They usually, but not always, run better with the float level lowered
about 1 mm.
Hook up what ever token water heating was supplied with the intake. If it
doesn't have any, send it back and get one that does.
The vacuum port on the Weber is useless on a B engine. Drill and tap a hole
in the manifold to get vacuum for the distributor.
Make sure the seal between the brake booster and master is okay.
With all that set up, I use the following jetting as a starting point:
Primary slow run 50
Secondary " " 55
Primary Main 130
Secondary " 140
Primary Air 190
Secondary " 160
Pump jet 70
Ignition timing set to 15 before at idle (800) without vacuum.
Good luck.
Randy
|