Weber 32/36DGV verses the Weber 38DGES

(carpal tunnel)
Thu Jun 30 2005
01:36 PM
yodta
(pooh bah)
Wed Jul 06 2005
09:25 PM
built4thrashing
(Stranger)
Thu Jul 07 2005
10:57 AM
yodta
(pooh bah)
Sat Jul 09 2005
01:45 PM
That size chart takes a grain of salt , on 2bbl downdraft intakes I usually subtract 12% or more in venturi size , hence 28-29mm
chokes. It seems on most setups the intakes inhibit flow speed just enough to cause a lack of response in the critical areas it's
needed for wheeling or daily commuting. 30's would be an upper limit to me on the 40mm carb , just seems like a good combo. I
do have already sets of 28-32 chokes here , so changing them out would be no big deal.
The port vacuum may be more of a problem than I thought , it's just the way the castings are designed. My plan was to be able to
pick up used 40DCNF's and rebuild them to new specs, set them up on Toy stock intakes w/port work done and a set of custom
adapters. As a package I could keep the price down pretty reasonable, maybe around $500 total and offer a pretty sweet setup
that is dead reliable and would last forever. If I have to go source very specific models that have the port area cast in then the
cost could easily double, there goes the market . The mechanical distributor would be a definite option but would limit the market
severely as an added cost to the customers.
The scoop or louvre would work fine but you'd also have to deal with rain. Better yet , add a divertor to the underside of the hood
to direct the hot air away from the carb...
Sarge
Re: Weber 32/36DGV verses the Weber 38DGES
well, I installed the new flexfan and against Sarge's better judgement, the Weber adapter for the stock Toyota air cleaner assy.
first impressions:
the fan is WAY loud, the engine takes longer to wind up, there's a bit of lag, especially on the bottom end, and as predicted it
feels like it needs to be rejetted because drivability is way off.
because I put the fan & the air cleaner adapter in at the same time, though, I wasn't sure what was causing the lag and since,
while watching the tach, it seemed to POP to life at 2800rpm accelerating beyond, I thought the fan.
as a test, I took the stock air filter out of its housing and ran down the road without an air filter. the hesitation almost completely
disappeared and it felt pretty close to the way it did before, so it appears the air cleaner is restricting flow bigtime, just like Sarge
said it would, and that the fan doesn't really have much to do with it.
now, on to the good things. the stock air cleaner is much much quieter than any ride-on-top air cleaner I've used to date. I like
this.
also, throttle response feels nice on light pedal once you get moving, and seems to cruise easier on less pedal, and acceleration
from cruise is very very smooth & steady, but only on light throttle. this driving condition is a slow steady influx of air. it falls
on its face a good bit when you try to open it up. I would say this effect is more than just "noticeable" -- it's very apparent that
something's not right.
that said, I think with the stock filter the air is slower to get moving through the filter which is causing the lag, but I can't imagine
this flowrate causing that much bother for such a small carburetor. we are talking about flowrate here, right? CFM? so the thicker
paper element is stifling the airflow, but is it reducing the total volume that can pass or just the rate at which it can flow past? it
seems to do okay once you're up and going, but getting started is a drag, and I mean that literally.
it feels spongy & lethargic if that makes any sense.
I'm considering dropping back on the mains a size to see if I can change the response and clean it up a little before going back to
the Ramflo air filter, but I'm thinking it's not going to make too much difference because this air filter is the limiting factor.
Re: Weber 32/36DGV verses the Weber 38DGES
hey yodta
What ya saying makes sence. we here in australia used to remove the stock aircleaners off our ford escorts and increase the
ssecondary main jet and they used to really soar. the paper filters only allow so much to get past. The ramflows are by far the
best. nothing else comes close.
B4T
Re: Weber 32/36DGV verses the Weber 38DGES
yeah, that's what I'm thinking too.
these escorts you're talking about -- were the the 16V euro versions? years ago when I was in germany for a couple of months I
saw there really tough looking little Ford cars. no badges aside from the Ford ones and a 16V one on the back.
and now a question about timing...
since I'm getting less air in, it seems to me that I should be able to run more ignition advance without it running too lean.
I want to run some distributor tests to see if the filter is limiting the airflow enough to change my vacuum advance.
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