ok i see all the numbers being throw around for webers.. like 45 or something? ( not cfms.. other #'s) and i'm pretty clueless as to what they mean.... i assume theyre models... but whats what?

can you guys kinda give me a short rundown on weber carb models and perhaps whats " bigger" ( flows more cfm..) etc?? thanks

also.. what, in you peoples opinion, would be the easiest aftermarket carb to tune? im pretty intimidated by "tuning" so id like to make the best choice for an easy to tune, good performing carb in the future

thanks a million!!

-clayton

 

Any weber is easy to tune. The number (ie 45dcoe) is the size of the throttle plates.

IDA (and IDF) - downdraft carb, sits vertically

DCOE - sidedraft carb, sits horizontaly

 

Webers are fully tunable, which means it's easier to screw things up. Plus the jets are EXPENSIVE.

It's probably cheaper to get a Haltech than buying a Weber setup and dialling it in. Especially if you get twin sidedrafts. (jetting expenditures automatically double)

 

Claytonsmith- Just do some research dude. Youll have to find what you can afford/find. You have lots of options to consider, Holley, Weber are two of the more pronouce setups. I have a weber on my car, really easy to work with all the jets are accesible to tune the carb. and its simple. So, far I have gotten lucky I found my intake for 50.00 and my carb for 250.00. Had to purchace about 100.00 in stuff to get her running.


PEEJAY--You just have to shop around for the jets, 3.95 each is the lowest price I have found here http://www.cbperformance.com/ . there is already enough weber set ups on this forum to give you an idea of where to start tuning from.

I think your haltech idea is out the window. I can buy alot of jets for the price of two injectors let alone four. Cource I'm thinking of the 48 ida FI setup too..thats an expensive set up.

 

$3.95 is a rapefest if you buy 20 of 'em.

48IDA FI setup? I was thinking more along the lines of OEM manifolding/injectors. Although, true, might as well just use the OEM computer as well

edit: 20 is kind of on the low side... that allows for 10 different jets - main jets, idle jets, or air bleeds. That's if you have only one carb.

 

thanks guys

 

once you get your idle jet your pretty much set on those. Which happen to be 9F65. But I think we are butting heads because we are making assumptions on the engine. I'm thinking 12a and you I believe are going 13b. So, hey dead issue either way.


IDA FI set up on ebay

 

I'm talking 12A as well. But you can put 13B fuel injection on it.

 

 

Just the thought of tring to get the 13b injection on my 12a just puts shivers down my spine. I really like the SIMPLICITY of the weber. The lack of wires in the engine bay now that I have it. If I was to put 13b injection in my car I think it would have the 13b with it. Nah, I killed that and put a weber on it too lol

 

my weber question is the low end . If i am seeing it right there is no longer a primary or secondary runners and the fuel gets sent down all the runners at once, how much low end umph do you lose?

 

I didnt notice any lose. Just a gain. I do have to admit its really cool looking down the carb and seeing all that fuel getting dumped when the throttle opens. but it doesnt drop it all at once. You have the acc jet and main jets. the acc jets keep it from boggin when you open the throttle, sends a nice squirt in. then when the air intake velocity get up to speed the main jets allow the fuel to get sucked into the engine. I think that is a overly simplified explanation. But thats my observation from looking down the carb when I open the throttle by hand.

 

upon further research.. ive discovered the price of webers... and i gotta ask.. why teh HELL are they so expensive when they're so simplistic?.. theres no choke man and theyre like $400! wtf? gahh

 

Weber's have chokes, just not the IDAs. What you should ask yourself is why weber throttle bodies are $600+ when they're even simpler to make.
The base of the carburetor itself is a bit tricky to manufacture. Lots of nooks and crannies. I know they cast them to an extent, but I'm sure they fine polish/grind certain areas after. I really don't know how they're made exactly, though.
CB Performance sells a good IDF throttle body for $250, which I'm going to use in my FI setup reaaal soon. (and I'm REALLY serious this time!)
Ebay has hella deals on carbs, too. Theres a guy from Italy that sells lots of dell'ortos and webers. alfa1750 is his ebay handle. I bought carbs from him before.
They are 'so simplistic' in that they do not have emissions related crap on them, and are the most basic design you can have on a carb and still maintain versatility in tuning.

 

Carbs bite! That said, would you like to buy my twin Weber 36 DCD setup? I'm just joking (about all of this, so please no flames), but seriously, tuning in a carb properly is a very time consuming black art. If you have lots of time, and/or you're good at it, you'll get good results. Carbs may be cheaper (who knows when you add everything up), but I'm going injected some day . . .

 

thanks for tehe heads up.. i'll be lookinga t his stuff