Weber carb dial-in

[Tom Jennings <tomj@xxxxxxx>]

Fixed the semi-final problem, a bit of lean-stumble at idle.
Richening didn't fix it...

When I went up to Top-End Performance in N. Hollywood to get the
replacement power valve (mine's cracked, with a temp. fix) I
mentioned this to the owner, Steve Nelson. He said sounds like
idle jet too lean.

I pulled it out in the parking lot (simple screw plug outside the
carb, above the fuel in the bowl and below the airfilter). Turns
out to be a 60 installed; he said that's as lean as you'd ever use
for a 258. 70 is normal.

Put the 70 in ($6), idle mixture now set correctly (3 turns in!)
no more stumble. Well, I get a stumble every 10 - 30 seconds, but
not bad for a parking lot fix.

This carb has no squirter on the secondary, so you gotta watch for
bogging it at low speed (under 2000). But it's pretty damn good
now.

I like Webers now. Wish I'd heard of 'em about 15 years ago. This
one will do fine this year, I'll build Megasquirt TBI EFI this
winter.