Whoops. I believe the air and mains I cited below are what actually came
in my carbs from the shop I bought them at. I will need to check to see
what I am actually currently running. Everything else is still the same,
including the F11's. I just am not sure where I finally ended up on the
airs and mains. It would be too ironic for me to be back to the set up
from Weber. Though, now that I think about it, I think I am probably lower
than 200 airs.
---------------------- Forwarded by Jay Laifman/Attorney/Legal/CF/CCI on
01/10/2000 02:41 PM ---------------------------
Jay Laifman
01/10/2000 01:50 PM
To: alpines(at)autox.team.net(at)internet
cc:
Subject: Weber jetting
Dave asks:
>Can anyone help, I am about to install my twin 40 Webers on the Alpine and
>want to start the tuning process, can anyone tell me what jets, chokes
etc.
>they are running as a starting point. I have a 1725 engine and wish to
tune
>for power rather than economy.
>
>Many thanks
>Dave
Jarrid replies - which I am running, except where noted:
30mm chokes - same
4.5mm aux chokes - same
115 Mains - same
180 air correctors - 200
45 Idle - 45 F9
.45 pump - 40
with F11 emulsion tubes - same
Note, however, the Lotus mechanic who initially set them up for me put on
120 mains, F16 Emulsion tube and 170 air correctors. I believe he used
that stack for the best WOT from his experience with Lotus engines. I got
the the 115/F11/200 stack after a lot of trial and error looking for the
best all round, and trying to pass smog. I find the F11 stack a much
smoother and throttle responsive stack. But, I feel the top end might be a
little off from the F16 stack - just a feeling, no dyno or timing to back
up that feeling. But, each car is different too. I'm running this on the
Holbay head with Holbay cam. The 120/F16/170 Lotus has a cross flow double
overhead cam engine. All of which I'm sure has an effect.
Don't forget altitude, weather, alignment of planets, Mercury in retrograde
etc. I'm pretty much at sea level with ocean moisture (at least I was when
I set the jetting).
Finally, for driving around town, you'll spend a lot of time on the idle
jets. I played with those for a while, but ended up feeling the best
result with the change to the others.
Jay
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