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  #13 (permalink)  
Old 10-04-2009, 03:03 PM
Eljaro's Avatar
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Join Date: Jun 2003
Location: Palma de Mallorca, Spain, ESP
Cobra Make, Engine: Contemporary with 482 KC/SO, TKO600,IRS Jag/AMP, 3.54 Salisbury PL,
Posts: 582
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Default A good Weber setting

Trying to find the culprit of an annoying hesitation above 3500 rpm , which finally was solved by correctly phasing the MSD billet distributor, I had come astray of my "good" settings on the webers.
After testing all week long I have these settings now:
40mm choke
145 main jet
150 air corrector
F14 emulsion tube
0.35 pump bypass
65 idle jet
100 idle holder
idle screw 1 turn out
21º initial advance, max 36, with a self made stop bushing.
Heavy silver springs max advance at 3200 rpm.
Car idles at 600 rpm if needed but I have it at 800. Starts without pumping the gas pedal.

Cam is a hyd.roller with 242/248 duration in a 482cid KC Pond alloy SO.

The car ran fantastically good. I hit several times 140mph (5000 rpm in 5th) with no sweat. Very smooth and snappy all the time.
Maybe the 00 bypass will remove the very slight bog if I floor the pedal suddenly below 2000 rpm but from 2000 rpm in 4th I can floor it and it just goes.
Also the idle circuit is not 100% as it will slightly hesitate below 2000 on progressive acceleration. Maybe the 00 bypass will help here too.
Definitively the F14 tube is the best, and with it the 150 air corrector gave no leaning out at WOT.

So the main circuit is now set for me, only the idle will need some working on.
I will try the 00 bypass, and it that does no do it I will try an 80 idle holder.

BTW today I used my new Avon CR66ZZ for the first time. Wow, does it improve roadholding and breaking. My old Yokohama Avid were 5 years old and rubber was probably dry, but the car never handled as good as today.
Very recomendable.
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