The 'doctor' shows me his technique for fine tuning carbs!
Original Post
Replies sorted oldest to newest
The 'doctor' shows me his technique for fine tuning carbs!
Attachments
Images (1)
Remember - the 6.5 pounder is only for the idle speed. For idle mixture, you need to use the 4 pound because of the more sensitive setting. If your linkage is rusty, you may add up to two pounds to each tool.
Duct tape and hose clamps will remove any play in the linkage too.
Rocky -
It could be worse, you could have the knuckleheads in this picture working on your car...
It could be worse, you could have the knuckleheads in this picture working on your car...
Attachments
Images (1)
Hey, WAIT A MINUTE.........
What's that single, BIG carb doing in there......looks like a small Holley, too! On a VW??? WHOA!
Shades of Retro-70's Dune Buggy Engine, there!!!!
(No wonder he's takin a hammer to it......)
Hey Jim - I like that 'duct tape' dispenser!
Weber Progressive = drivability, dial it in and forgetaboutit.
Wez get'n close to start up on the weekend. Thanks Rocky for spending the weekend in my shop....speak of same, mask was to filter "Gas of Rocky" the goggles, to keep my eyes from a' tear'n :)
Wez get'n close to start up on the weekend. Thanks Rocky for spending the weekend in my shop....speak of same, mask was to filter "Gas of Rocky" the goggles, to keep my eyes from a' tear'n :)
Hmmm... Sounds like a scene from 'Blazing Saddles'.
Did Alan refer to Rocky as 'Mongo'?!
My experience with Weber progressives has been disastrous. The thing never ran right no matter what you did. My friend who owns a local VW shop says it's a crapshoot with those carbs; either you get a perfect one or a real shitty one.
Wow, that's interesting.
I ran them on every Dune Buggy I built back in the 60's, although I was usually running small Holleys on EMPI (I think) intake manifolds. They were plentiful, cheap and seemed to be trouble-free (at least on the 8-10 setups we built).
I agree with Alan; install them, dial them in and forget them (in all kinds of nasty operating conditions) and their performance was as good and often better than comparable dual-carb setups (although we were usually running Solex or Zenith for duals - Webers or Dells are a LOT better than those old duals).
The only problem I can remember was the lack of manifold heat tubes so they started to run crummy along about mid-October when it began to get cold, just when we wanted to use the buggies for Duck Hunting Season |>(
gn
I ran them on every Dune Buggy I built back in the 60's, although I was usually running small Holleys on EMPI (I think) intake manifolds. They were plentiful, cheap and seemed to be trouble-free (at least on the 8-10 setups we built).
I agree with Alan; install them, dial them in and forget them (in all kinds of nasty operating conditions) and their performance was as good and often better than comparable dual-carb setups (although we were usually running Solex or Zenith for duals - Webers or Dells are a LOT better than those old duals).
The only problem I can remember was the lack of manifold heat tubes so they started to run crummy along about mid-October when it began to get cold, just when we wanted to use the buggies for Duck Hunting Season |>(
gn
This Weber progressive came with the manifold heat tubes but, my Hide-Away exhaust does have the matching connections so, I'm not using them.
The speedster produces warm air in the engine compartment and it works well.... Rocky's has been on his car for at least 9 years that I know of. The You have to have patience setting up the carb but once done you're good to go.
You also have to clearance the inner liner of the deck lid and use the smaller 1-3/4" element.
The speedster produces warm air in the engine compartment and it works well.... Rocky's has been on his car for at least 9 years that I know of. The You have to have patience setting up the carb but once done you're good to go.
You also have to clearance the inner liner of the deck lid and use the smaller 1-3/4" element.
Alan
What kind of gas mileage are you expecting? I've never had one of those Holly or big two barrel or progressive carbs that I was happy with.
As I recall, getting a carb with that much maniford to "wash" ended up running way rich to get throttle response and idle.
The best center carb setups (back in the day when they were plentiful) were Zenith 32NDIX's. And back then compression ratios were typically above 10:1, which tended to mask lots of problems.
Greg
What kind of gas mileage are you expecting? I've never had one of those Holly or big two barrel or progressive carbs that I was happy with.
As I recall, getting a carb with that much maniford to "wash" ended up running way rich to get throttle response and idle.
The best center carb setups (back in the day when they were plentiful) were Zenith 32NDIX's. And back then compression ratios were typically above 10:1, which tended to mask lots of problems.
Greg
We ran small Holleys: 250 or 350 - can't remember which number. Nice, because thay had an integral manual choke.
Yes, they liked to run rich at idle until you got them jetted down, and then they were fine. We also wrapped the intake manifold with fiberglass insulation in a mistaken effort to keep them from condensing - didn't work. Later, we made up our own mild steel heater tubes just like OEM VW and THAT worked great. Just clamped them right along the intake manifold and ran to the exhaust manifold flanges for that purpose. Some guys wrapped glass insulation over the whole thing, others didn't.
Yes, they liked to run rich at idle until you got them jetted down, and then they were fine. We also wrapped the intake manifold with fiberglass insulation in a mistaken effort to keep them from condensing - didn't work. Later, we made up our own mild steel heater tubes just like OEM VW and THAT worked great. Just clamped them right along the intake manifold and ran to the exhaust manifold flanges for that purpose. Some guys wrapped glass insulation over the whole thing, others didn't.
Expect to see the 28 plus mpg as in past applications. Packed with the carb was a set of the intake heat tube but I don't use them, the trick is to have the intake runners warm. (Makes for good windshield post spacers though)
The Weber Progressive has a good electric choke configuration. The intake runners don't have to be "hot' just warm for it to function properly. The speedster's engine compartment confined area retains enough ambient air temp heat allowing the fuel to vaporize and not condense in the runners. With the Weber progressive you sacrifice a bit of throttle response but it's a decent trade off by not having to constantly fondle idle jets and mixture on dual carbs. ~Alan
The Weber Progressive has a good electric choke configuration. The intake runners don't have to be "hot' just warm for it to function properly. The speedster's engine compartment confined area retains enough ambient air temp heat allowing the fuel to vaporize and not condense in the runners. With the Weber progressive you sacrifice a bit of throttle response but it's a decent trade off by not having to constantly fondle idle jets and mixture on dual carbs. ~Alan
Where'd you get the carb and manifold??
Chirco, was best price I could find.....
http://cgi.ebay.com/ebaymotors/Air-Cooled-VW-Progressive-Weber-Carb-Kit-Type-1_W0QQcmdZViewItemQQ_trksidZp1638Q2em118Q2el1247QQcategoryZ33550QQihZ008QQitemZ180229539115QQrdZ1QQsspagenameZWD1V
http://cgi.ebay.com/ebaymotors/Air-Cooled-VW-Progressive-Weber-Carb-Kit-Type-1_W0QQcmdZViewItemQQ_trksidZp1638Q2em118Q2el1247QQcategoryZ33550QQihZ008QQitemZ180229539115QQrdZ1QQsspagenameZWD1V