Weber 32/36DGV verses the Weber 38DGES

yodta
(pooh bah)
Mon Mar 14 2005
03:27 AM
Sarge
(carpal tunnel)
Mon Mar 14 2005
12:43 PM
molasses. DHL hasn't been much better,had an overnite Sat. delivery that finally showed up yesterday at 3pm, way too late to get
a shipment out on time as promised. That's going to result in a very nasty phone call tomorrow, making me look bad with a
customer is not acceptable and paying for overnite before 10am was for a reason. On top of that, the bozo left it outside by the
door....
Sarge
Re: Weber 32/36DGV verses the Weber 38DGES
link? what link?!? (I'm always doing that)
okay, so if I've learned anything during this last little bout with Weber tuning, it's that air corrector jets are not in there just for
show, or to plug holes
I made several changes today, the best results being from air corrector jet changes. never would have thought it, but WOW. I
really can't get over the difference they can make.
I got the best results today with:
idles: 70/65 (or 60, haven't decided which is best yet)
mains: 135/150
airs: 180/185
if you recall, before I started all this jetting stuff again I was at:
idles: 70/65
mains: 130/150
airs: 170/180
after going up a few steps at a time, noting the performance each time, finding a workable idle and main set, bumping up the airs
a little at a time, finally getting to a point where I was lean in the main circuits -- evidenced in that "towing an invisible anchor" lag
feeling where it gets all loud like it's trying to move but not really doing anything -- I went back to the "last known good" of sorts of
the configuration you see just above.
as you can see, my current jetting is only a slight departure from the stock jetting in the mains & airs, my changes being a slightly
larger primary main, two sizes up on the primary air, and one size up on the secondary air.
it is MUCH more responsive now. getting closer to what I'm striving for -- a nice responsive pedal at all conditions; kind of a
"thick" feeling; smooth, full throttle response. still not breakneck or anything, but better than it's been. I've got a little slop to work
out which I think may be timing related, but with the minor changes from the stock config, my truck's really come alive. I can't get
over how much more responsive it is just by bumping up those airs.
the sluggishness I described before was from the main circuits being too rich -- you nailed it Sarge -- bump up the airs to "brake"
the main circuit a bit; both delay when it comes in and lean it out a bit. I guess the main was overlapping with the idle circuit too
much, which would explain why it cleaned up when I opened the throttle more & the vacuum fell off of the idle circuit a bit. I was in
the right ballpark with the other jets it seems, with the air correctors being the fine tuning I needed.
I'll have to drive it around a bit more like this to get a better feel for it, but so far I'm quite pleased.
oh, and about the timing -- I've got an adjustable craftsman timing light, but the knob has a good bit of play in it, so I'm not sure
where exactly my timing is. you can turn the knob all the way down and it ends up below zero. then when you start to turn it, you
can get to like 2 or 3 degrees before you can feel the knob resist. I'm not sure how to read this thing at this point. I was out
looking around today for a cheap standard timing light to compare it with, but there aren't any to be had for less than $35. do you
have an adjustable light like this and if so, do you have a similar problem?
Re: Weber 32/36DGV verses the Weber 38DGES
A friend of mine had one of those lights, and the same problem with it . We tried several times to re-calibrate by using my light
and seeing if his returned to the same point . It did not, every time he brought it back down it would land on a different spot,the
light was junk. I've been told that some of the auto parts stores like Advanced Auto have a nice digital similar to Snap-On's for
around $100 or so, cheap compared to theirs. You will find that timing lights vary a lot, no two seem to read the same these days.
So much for modern manufacturing . One nice thing about dial back lights is the ability to check total advance, that's how we dial
a buddy's dirt race care. Initial is not a concern, just set it to 36* at 4k and let the initial fall where it may. This insures the car's
total timing is set properly and it won't detonate under a load.
Keep an eye on your plugs while you drive this test . There are times that good "response" feel comes from running pretty lean .
There is a point where power can be pretty high just before melting a piston or burning valves. You will also find that if the float is
a bit low, raising it will bring in the mains harder and sometimes also increase throttle response.
One thing I see with your jetting , the way the idles and mains are up to a fairly high point in the secondary. I'd bet the cam timing
is off a bit . You wouldn't belive how much difference 1-2* can make in a motor . Got any specs on it , or is it stock ?
Sarge
77celica Re: Weber 32/36DGV verses the Weber 38DGES
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