Weber 32/36DGV verses the Weber 38DGES

(pooh bah)
Tue Jun 28 2005
04:39 PM
yodta
(pooh bah)
Tue Jun 28 2005
08:31 PM
Sarge
(carpal tunnel)
Wed Jun 29 2005
02:26 AM
yodta
(pooh bah)
Wed Jun 29 2005
02:37 PM
Jetting Update:
things were a little sluggish in the primary with the warmer weather -- too rich with the 140/140 mains, and the secondary was
falling on its face -- too lean I thought.
I took it to 135/145 mains and the primary response tightened up a little bit, though the secondary was still lacking & hesitating
until the air really got moving. I took the secondary main up to a 150 and it started picking up better. I think this is a better setup,
and pretty close to how this carb arrived -- go figure. so for those of you keeping track...
idles: 75/65
mains: 135/150
airs: 175/180
e-tubes: F50/F50
mix. screw: 2-1/8 turns out from seated
timing: 3-4* base, 12-13* with idle advance connected.
it still hesitates slightly if I stomp into the secondary, but I think that has to do with the secondary idle jet. I'm going to try bringing
it down to a 60 first, then if it's worse I'll go the other way with it and put in a 70.
I think I'm going to get the LC Weber to stock air cleaner adapter to relocate the intake to the front of the vehicle. all I'm doing is
sucking in hot engine compartment air this time of year.
also following a thread on 4x4 wire about hood scoops/louvres. I'm considering putting in some screened louvres to push air in
over the engine and also some underside hood insulation. any thoughts?
Re: Weber 32/36DGV verses the Weber 38DGES
Sarge, cable travel --
2.1 inches travel from closed to open. triple checked.
Re: Weber 32/36DGV verses the Weber 38DGES
Thanks for the measurement , that will help a lot . Been working a bit on the DCNF project for Toys lately, had some problems
getting a proper area to add the advance port . The base areas are just too thin and no casting is provided, may have to do
something different . BTW, any idea of the optimal size ? I'd say for the given engine size a 40mm carb w/28 or 29mm venturi's
should work great . What size are the chokes (venturis) in the 40DFAV you have ??
Don't use the stock air cleaner adapter, they restrict air flow badly and will throw off the jetting . If nothing else, make a divertor
duct to bring in fresh air from around the headlights.
Sarge
Re: Weber 32/36DGV verses the Weber 38DGES
mmm, the pierce chart says 31mm or 32mm in the middle of the range for a 2367cc displacement -- scroll up on this page.
my 40DFAV has 28mm venturies in it. I'm not sure when I'll get a chance to try it out, but will certainly let you know.
as you know, the smaller venturis will guarantee bottom end torque, so 29mm sounds like a nice fit, allowing for easy breathing
while not compromising the bottom end.
as for the ported vacuum... there's always the LC mechanical distributor, but I think you'd lose fuel economy if you can't make the
idle advance work. I can't think off hand of a way to use idle advance without using the normal advance as well -- the LC
distributor is all mechanical -- no vac. ports on it it all. I guess one option would be to recurve the mechanical side of the stock
distributor to work like the LC mechanical one, then use only the rear diaphragm for idle advance. that might not be a bad idea,
actually.
I've already ordered the stock air cleaner adapter. it was only $33 and I have a spare stock filter housing. I'm really curious about
this... the inside of the filter assy. is "ramped" up and almost venturi designed to allow for smooth airflow down the carb opening,
but yes, the stock opening is a little more restrictive.
good idea on the the diverter. I was actually considering a scoop or louvre over or just in front of the carb intake.
what do you think?
Sarge Re: Weber 32/36DGV verses the Weber 38DGES
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