Weber 32/36 proper setup to my B18; years later!
HTML-код
- Опубликовано: 8 сен 2024
- My Volvo B18 engine was rebuilt a few thousand miles before I bought it, but the Weber 32/36 was left in bad shape, and was poorly tuned. "It's running, so how bad could the setup be?" I told myself. Truthfully, I was intimidated to dig into it, but the bad performance, rich conditions, and low fuel economy got me over that fear.
This is the third time I've messed with it (after cleaning it, checking the jets, and fixing the choke), but it should have been the first thing I attempted. It is better off now, but probably still needs different jets to live up to its alleged potential. That will be the next step before I toss it in the bin.... 
Авто/Мото
Great demonstration of how the idle speed and idle mix screws work together and how they should be set!
I had a weber 32 dir on my b14 engine. Many of the issues you describe I had as well. I always thought at first that it was a vacuum leak, the jets, bad gaskets and etc. Then I just started to adjust the carb as I forgot to do it when I had it running the first time. Fixed every issue. Shaking, bad performance, ran too rich and would die when it was warm, and bad fuel economy.
All I can tell you is that the 32 dir is incredibly sensitive to vibrations, and if you've got bad engine mounts you want to keep an eye on the carb.
I have good mounts. I'm starting to speculate that the bowl shape isn't well suited to this side mount setup. There is a lot of rocking motion when on the side of the engine instead of on top. Instead of just vibration, it seems to move a lot. A lot of people think the big problem is cause of the bends in the intake, uneven heating, and air flow, but seeing it wiggle around, I can only imagine the gas sloshing around the relatively flat "bowl" has a big impact.
@@MakeitOnce that might actually be true. One common issue on the b14 engine was that carb would actually shake loose and you had to retighten it every now and then.
I’ve had this same problem! Comes out of adjustment every few months and runs poor. Ordered new mounts as they are clearly gone then saw your comment so will be changing them tomorrow then tuning 👍🏼
Put a ome size larger idle jet, likely a 65, easy to change, external, only takes a minute and make sure o ring is still there sealing jet holder.
Invest in a good afr gauge , it',ll greatly help with your precise carb tuning
Do not remember the ignition timing must bee rigt too, tdc like the dwell., good sparkplugg,
If it sat with ethanoyl gasoline in bowl may turn into jelly. Awesome car
What I have found, at least here in typically dry Califa (not this year, though!!!!) it actually evaporates into a powdery caked residue within a couple days. The "bowl" of the Weber isn't sealed/baffled at all, and with a K&N the gas just disappears. The jelly thing must be a pre-ethanol thing, cause I've never seen it on either Newton or Marty, and they both have sat with gas for long periods of time. Still a bad residue that needs cleaning cause it binds the moving parts even worse, but not a sticky mess. :)
Is the thin hose in the middle air or fuel?
It's a vacuum line to the distributor. Fuel is the bigger tube on the front side.
Misfire not a fuel problem
throttle shaft play maybe ? common issue on these
Didn't think of that. Seeing how much play thee is in the choke, it wouldn't surprise me and would explain a lot.
@@MakeitOnce yeap !
I had a 34 34 on my 240, I'm not a huge fan of these carbs tbh. You should consider putting an OE carb on that B18 ^^
These Webers, being downdraft vs the sidedraft SUs or Strombergs is kinda an issue (fuel mixture has to make 90° bends)
Love the vids, keep em' coming !
Why not install the original proper SU carbs. ?
Short answer is that I don't have the original set. Car came with this setup. My guess is whoever did it couldn't find the separate intake manifold when they swapped in the sport exhaust and manifold (Probably needed due to rust since this car was near the beach for a long time). On paper the weber can tune for more fuel, which usually means more power, but in this car, not so much; so at the end of it all, whoever did it, was going for the typical exhaust upgrade, and didn't know what the trade off was.
I did pick up a replacement pair, but I don't know the condition, nor do I have all the parts to do it. Its not a simple swap since I would need to buy a new linkage and set it all up, etc. Once Marty is driving well I can take on more with Newton. I want to keep one of the two running, and this sort of job would probably take me quite a while with my current schedule. Maybe one day :)
@@MakeitOnce Bag the Weber.
Carb cheater!