I'm a weber newbie

I was playing with my Weber today. I also had another spare Weber previously fitted to a Mk 1 S also.

I took the jets from both.

Both had F16 emulsion tubes, but on the end one had 125 (fuel jet?) and mine has 150. I ran the 125's and it lost top end power.

THEN.....I found what seems like another jet on each top side, under a screw off cover? (What are they?) They are much smaller. Mine were 55, and the spare Weber had 35. I swapped to the 35 ones, and noticed smoother performance down low, but still the neck snapping top end grunt.

I am going to run the 35 small jets for a week, to see if my GT performs any better / worse.

Just curious what other Weber users have in theirs?

Anton,
You need to state what SIZE Weber it is, eg 40DCOE or 45DCOE. Check the lid.
Also, the choke (venturi) size in it will affect what jets work, as well as the state of tune. You really need to find out what size they are.
Beware running it very lean either by too small main jets or too large air correctors, you can burn pistons etc easily.
PLEASE come and get this book I have, it will explain much.

_________________
DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

its a 45.

yea I'd love to read the book. can't get over till next weekend though.



how?

By removing the auxiliary venturis, then pulling the chokes (main venturis) out.
Dellortos have the choke size stamped at the top, looking in from intake side. I can't remember if Weber ones do too.
re the book, I'll drop it off next time I go past...

_________________
DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

Original weber venturis have the size cast into them and you should be able to see looking into the carb.

daniel

_________________
Videos - Turbocharged A-Series on Dyno & at Wakefield
Mafs waz not my strong subgeckt at skkol