peejay

That's what I mean! The ONLY way to get Weber 48IDA's is used, because they've been out of production for some time now.

RXcetera

By "new", I meant reman. Dude, $500+ for a used Weber? Have I been getting deals all my life? In all honesty though, I spend most of my $ on Dellorto's, which I have bought for as low as 100$.

peejay

http://www.thepartstrader.com/Single...m=251946&DCID=

http://cgi.ebay.com/ebaymotors/aw-cg...759251&r=0&t=0

http://cgi.ebay.com/ebaymotors/aw-cg...770311&r=0&t=0

The only ads I could find for 48IDA's for sale on thepartstrader.com and Ebay.

I can find other Weber models for a lot cheaper... in fact there was a tasty dual 40DCOE setup on Ebay rather cheap... but for rotaries the 48IDA is king unless you want to spend even more money on one of Paul Yaw's ultra-trick E-Production setups or pay Racing Beat exorbitant amounts of money for a Holley setup.

RXcetera

And Dellorto DHLA?? Let's not get into the whole Weber vs Dellorto thing here, but I think Dellortos can more than challenge Webers as the king of the 2 barrel rotary carbs (as long as you stick to a 48). Sure, parts are scarse if you dont know where to look, but the carb itself is better and has more fine tunning potential IMHO.

V8kilr

man those webers that were cleaned look nice.anyway does anyone know if you could take a holley four barrel and just bolt it to a stock manifold?i know the car itself has to be modded for the engine,but will it bolt up?if so which one?

peejay

nowhere near a bolt-up.

Anyway the carbs that RB will sell you actually flow about as much as a Yaw carb, but the real advantage is the manifold, apparently the RB Holley manifold is one of the best flowing units out there.
(quality as well as quantity)

RotorMotorDriver

iTrader: (1)

Whoa...Lots of stuff to read

yayarx7

That sounds like what I would want for a daily driver and an autocross car.
.......I wonder if Paul gives quantity discounts

......hmmmmm

.......probably not

yayarx7

I know I have seen just the carbs go for fairly good prices but What about the intake manifold? They are much rareer than the carbs and go for about $300 to $500(new) do they not?

peejay

The manifolds are not rare, they are still in production. Awfully expensive though, around $200-300 as I remember.

hanman

Just compare apples to apples:
Approx. $500.00 buys you:
Yaw carb modded
Yaw ported manifold
Holley pressure regulator
Carter fuel pump
Yaw calibrated fuel pressure gauge
And in the end all you get for that is a carb that will make your car scream for very little hassle, setup trouble, and excellent streetability, along with free advice from the expert himself (when you can get ahold of him of course).
Now who would want all that when you can go out and find a Weber of questionable condition and spend countless hours trying to tune it correctly.
I think I will stick with my Yaw.
that's only my opinion, I could be wrong,
hanman

theNeanderthol

iTrader: (1)

Well put.

piston pounder

My dcoe weber was the best performance upgrade that i have ever put on my seven!. Its completly "streetable" in every way possible!. Take my advice and spend the extra on a Weber!.

mar3

iTrader: (8)

Just out of curiousity, do they have any kind of emissions police up there in CO? How does the Weber fare as far as HC levels at 1000 RPM and at 2500 RPM which is where the ***** test down here in Tejas?

RXcetera

Neanderthol, a good point, but the reason the Yaw setup is so cheap is because it's a modification to a carb you already own, not a new carb. 500$ to clean and modify a Nikki carb I already own and paid for sounds expensive to me. In many cases, people want to keep their Nikki as is out of their car in case someday they would like to return to a stock setup. That requires the purchase of a decent junker carb and manifold to send to Yaw, so you'd have to factor that into the cost of the Yaw setup. Personaly, I'd rather invest my money in a true high performance after market carb than molest a stock Nikki.

Sterling

You're the kinda guy that buys the "already made" pattys instead of making his own burgers, aintcha?!

Think outside the name, "Weber". If someone has the knowhow to make something as good as, or at least good enough to be compared to a Weber, then why not?
Look at the carburetor for what it does, and how it works; not how sparkely it is.

It's all a moot point - this discussion. I've seen it over and over, and it's always the same...and no one - NO ONE ever changes anyone elses mind.
The discussion degrades into whos dick is bigger, and guess what?...The poor bastard asking advice gets lost in the shuffle!

Well here's my opinion...
Holleys have all their **** cast into place, and so they are not as tuneable as other carbs. People either hate them, or love them. But I don't think I've ever read anyone complain about their Weber, or Yaw modded, or Dellorto. The Webers and Dellortos were designed for high RPM racing use, and that's a FACT! Now some people have successfully tuned theirs to be "street wonders". Personally I think they are fulla ****. (Yeah, I said it.)
If you have an understanding of how a carb works, then you understand that a little Weber is gonna have a real sweet spot, but not much else. It'll bog at low RPM pedal thrashes. It's just life.
They belong on the race track. If someone has successfully tuned their Weber carb to be truely "streetable", then they are just about a carb-******-genious; and would certainly mention the hell they went through to get it there in order to save the person enquiring a big fat headache.
Geniouses?...Anyone? Anyone?

Yaw set out to make a streetable flat powerband carb. The trade off is that the Weber will beat it in a race on the track. The Webers power peak is higher, but narrow.
But hey...don't listen to me; especially if I tell you not to listen to someone else!
LOOK IT UP! That's the ONLY WAY to get thorough info regarding carb choice, cause you'll never get the whole story here. Visit Yaws site. He does'nt just sell carbs. It's packed full of info.

But for all you other chowderheads reading this, I'll say what I always say...and it's always for the benifit of THE GUY ASKING THE FRIGGIN QUESTION!...
Either way, you can't go wrong, because both the Weber and the Yaw will have a very good re-sale value.
This is what is comforting to someone who is about to make a purchase...
but I never read anyone else saying it for their beifit

RXcetera

How do you answer that? Do I need permission to? :P. I dont think anyone here is out to change anyone's mind... I personaly use the forum to inform, learn and state my opinions.

I guess I and others on this forum are genius' then (or "full of ****"). It's relatively easy to make a Weber or Dellorto as streetable as a stock Nikki but, as with any other carb, this directly affects its performance. I've been rebuilding a Dellorto that was shipped to me with 34mm venturies... With such small chokes, that carb would be just as smooth as the best Nikki out there. Of course, it would run out of breath at 6000rpm, just like a Nikki.

You seem to be misinformed about Webers and Dellortos. These carbs where designed for production street cars, not race cars. Many street cars came with Webers and Dellortos from the factory. On the other hand, the Yaw carb mods where intended to be used by spec 7 racers looking to gain an edge over other competitors.

Carb tunning is ALWAYS a compromise... it doesnt matter what kind of carb youre tunning. The stock Nikki was designed from the ground up to be as smooth as possible and to be good on gas... all this was done at the expense of power. Yaw squews the balance towards power instead of gas mileage and ultimate smoothness. Webers and Dellortos, because of their vast tunning capabilities can offer one or the other. I personaly like this flexibility. I've NEVER seen a carb that offers BOTH perfect streetability AND ultimate power... that's why FI exists. If I was broke and looking for cheap power, I would definitly go for the Yaw mods. But If I had a choice... I would go for the real thing and get a Weber/Dellorto.

Wow... I'm bored. Jeeze that was long and boring .

theNeanderthol

iTrader: (1)

Well a weber or deltorto sounds pretty good. You could just rejet it when you to the track. The best of both worlds, it just takes a little work to switch between worlds. Thanks for the info. But while my Nikki is al torn apart an being reuilt anyway, what can i do to get more powerful. From what Iv'e been told, venturis are delicate and shouldnt be touched unless you really know what youre doing. So what should i do mechanical secondaries and accerator pump? Maybe machine down those little bar things that the buttlerflies attach to? Polish the inside some?

hanman

I still stand by the Yaw carb, because of the ease of tuning. Mine came very close to being perfect right from Paul. By the way the $500.00 included the price of the spare carb (I still have my stock Nikki should I ever want to put it back on) and the spare manifold. When I received my Nikki back from Paul it was just like new, take a look at the pictures that he has of his carbs on his website, beautiful. He strips and replates them. This is not a "molested" stock Nikki. It is modified for better performance. For more info read Paul's theories on why a two barrel carb will never give you as good a powerband on rotaries as a four barrel.

Nean, I wouldn't mess too much with the stock Nikki unless you really know what you are doing. Yes, you can switch to mech. secondaries or cut/remove the stock secondary spring in the vacuum diaphragm to let them "kick" in earlier. Sterling has a post on modifying the accelerator pump. You could also go to the Carter fuel pump and Holley regulator, some guys report a performance gain and smoothing out of the carb. This would also give you a head start on the Yaw conversion.
just my opinion,
hanman

RXcetera

I agree... that sounds like the best idea. If you feel like experimenting with a spare Nikki, by all means go ahead! Just dont expect much.

Hanman, I am aware of Yaw's (and other's) theories on 2 barrel carbs used on rotaries. My experiences cause me to disagree. It's normal for people who like one type of carb to say it's the best... all types of carbs have their pro's and cons depending on the application.

BTW guys, I'm not saying one carb is better than another, I'm just comparing their strengths and weaknesses. I firmly beleive Yaw's mods are a worthy alternative to a Weber/Holley/Dellorto... that is saying alot!

PaulFitzwarryne

I agree with RXcetera. Each carb has its good points and special applications.

I have used Webers for some 30 years, I think they are best because I can tune them in my sleep! Before that I used SUs because I knew them, thus naturally they were the best! If I had tried a Weber then it would be messed up by ignorance.

Perhaps a modified Nikki is a good firdt improvement because you dont have to change much else to bolt on and turn thr key. If I went 200+ then I would think what else is around , including going to EFI. At 300= your alternatives get even more limited certainly not a Nikki!.

So back to the thread, yes modify a Nikki if you are looking for a small change, you can do it yourself if you now what to do, otherwise send it to someone like Paul Yaw. I would love a spare carb to avoid the three months wait without a RX, but there are none cheaply around here.

hanman

RXcetera, on the issue of 2 barrels vs. 4 barrels I don't have any experience with a 2 barrel. Just thought I would clarify. Thanks.

Paul, keep an eye out on ebay and the partstrader. You can find very cheap Nikki's out there.

hanman