Dual carb on a 79

Keep it on topic, it will make it easier to find what you need.
WYSpider

Re: Dual carb on a 79

Post by WYSpider »

Being ignorant, I'd say they perform the same when wide open on a single plane manifold:
32+36=68
34+34=68
BEEK
Posts: 1833
Joined: Wed Mar 24, 2010 10:45 pm
Your car is a: 1975 Spider
Location: clermont fl

Re: Dual carb on a 79

Post by BEEK »

venturi size, and overall construction make a difference too. the 34adf directly bolts on and appears the same as stock.
the 32/36 is a very universal carb. i have played with many over the years and had better luck and more performance with a 34dmsa
Last edited by BEEK on Thu Jan 02, 2014 9:14 am, edited 1 time in total.
Automotive Service Technology Instructor (34 year Fiat mechanic)
75 spider
, 6 Lancia Scorpions, 2018 Abarth Spider, 500X wifes, 500L 3 82 Zagatos. 82 spider 34k original miles, 83 pininfarina, 8 fiat spider parts cars
son has 78 spider
FortFiat79

Re: Dual carb on a 79

Post by FortFiat79 »

Ok a plan is forming. Please tell me if I am makeing a mistake.

I have some amazon gift cards that make the 32/36 Empi Very Cheap ( and hides the bulk of the upgrade price from the wife)
http://www.amazon.com/EMPI-DFEV-CARB-ON ... 2%2F36dfev

From what I understand I will need a Linkage adapter
http://www.ebay.com/itm/WEBER-CARBURETO ... 4d086549e1


I still need to find a 1800 intake manifold. Is this a good price?
http://www.autoricambi.us/product/FU1-4 ... -Manifold/

Do I need a spacer if I switch to the 1800 Manifold?
And will this solution work with my Detent Cable needed for the automatic tranny?
WYSpider

Re: Dual carb on a 79

Post by WYSpider »

Weber Direct sells a Weber 32/36 DFEV for $199. Empi is a Chinese knockoff of the Weber.
fiat218
Posts: 5745
Joined: Fri May 16, 2008 5:06 pm
Your car is a: 1969 124 AS spider

Re: Dual carb on a 79

Post by fiat218 »

WYSpider wrote:Weber Direct sells a Weber 32/36 DFEV for $199. Empi is a Chinese knockoff of the Weber.
Damn, Chinese ? We'll I tell you this, my empi worked a lot better then the carb I got from weber direct
I know you are not saying anything bad of either one
Jim
East Grand Forks MN
1970 Fiat Spider BS1 ( FOR SALE
1969 124 AS Spider
2017 Abrath
2018 Alfa Romeo 4c Spider
lanciahf

Re: Dual carb on a 79

Post by lanciahf »

Weber Direct are also Chinese "Webers". Try to get a Weber/EMPI from one of the vendors at least they will be able to help you if you get stuck.
WYSpider

Re: Dual carb on a 79

Post by WYSpider »

lanciahf wrote:Weber Direct are also Chinese "Webers".
That's good to know. The one I purchased from them is stamped "Made in Spain", but that was back in 2010.
WYSpider

Re: Dual carb on a 79

Post by WYSpider »

fiat218 wrote:Damn, Chinese ? We'll I tell you this, my empi worked a lot better then the carb I got from weber direct I know you are not saying anything bad of either one
Nope, it's a personal preference thing. I'd also buy an AYA Spanish double shotgun over a Chinese version.
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MrJD
Posts: 551
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Your car is a: Looking to ask questions about a 79 2.0
Location: Laurinburg NC

Re: Dual carb on a 79

Post by MrJD »

I have read mixed reviews on empi carbs... I wonder how much of that is weber elite-isms though. Can anyone in the know pleas speculate on my comments about the weber 32 adf?
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RoyBatty
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Your car is a: 1975 124 Spider - 1971 124 Sport Coupe
Location: Locust Grove, VA

Re: Dual carb on a 79

Post by RoyBatty »

I had the empi 32/36 from Allisons on my 75 for the last couple years before I installed the economy idf kit from Auto Ricambi.
The empi ran and worked fine. The only thing I can gripe about on the empi is the metal alloy used in the casting of the carb body.
The choke assy on mine kept coming loose and repeated retorqing of the choke mount screws failed to keep the choke assy secured. The threads cut into the carb body seemed to just gall up and never fully torque properly. I finally drilled and retapped the holes for 8/32 screws and secured the screws with blue loctite. Even when cutting the new threads, the way the tap felt as it made its way thru the metal of the carb body did not feel right.

I noticed the economy idf carbs seemed to not have this issue in the numerous times I've had them opened to ensure the float chambers were clean as I tweaked them into tune.
sdebaker

Re: Dual carb on a 79

Post by sdebaker »

MrJD wrote:"...

Also, I have read that the 4-2-1 exhaust is just as good as most headers out there. I find this kinda hard to believe... anyone had both and feel like commenting? I tend to find that all cast manifolds are a bit restrictive by header standards.
I have seen surprising test data that shows that some headers are not much, if any, better than stock, cast, exhaust manifolds. One example was a test done by Grassroots Motorsports magazine on BMC B-series engine. Headers produced less horsepower than a factory manifold.

Not saying this is true for the FIAT engine, but I wouldn't automatically assume the header is better, either. Does anyone have real data on the power output of different exhaust configurations?
sdebaker

Re: Dual carb on a 79

Post by sdebaker »

WYSpider wrote:Weber Direct sells a Weber 32/36 DFEV for $199. Empi is a Chinese knockoff of the Weber.
How much different from the Holley 5200 series (other than jetting and air correctors, if any) is this carb? The Holley is a licensed Weber, which was used on gazillions (I am rounding the number) of Ford, some GM and some Chrysler products. There are probably piles of these higher than Mt. Everest in junk yards across the US. I suspect $25 would take one home.

Regarding jets and air correctors: these Weber/Holley conversions are fairly popular on British BMC A and B-series engines MG's, Sprites, Morris Minors. However, many people find the jets and air correctors furnished in the new-carbs-conversion kits, as delivered, are not optimum, so they end up replacing these. This might be the case with the FIAT application as well.

Put a Weber decal on the Holley and the hoi polloi will be none the wiser.
So Cal Mark

Re: Dual carb on a 79

Post by So Cal Mark »

Weber Directs cheap carbs are also made in China, they put Weber decals on them. I expect they're made in the same factory that makes the EMPI carbs. At least EMPI is still doing R&D on their carbs and have improved the venturi boosters for better transitions. The EMPI carbs do have a one year warranty.

As for headers, I've posted my dyno results for both my Spider and X1/9 headers, proving our improvement claims. I've challenged every other header mfg to do the same and so far no other vendors or mfgs have responded
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MrJD
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Your car is a: Looking to ask questions about a 79 2.0
Location: Laurinburg NC

Re: Dual carb on a 79

Post by MrJD »

And you're an EMPI believer right Mark?
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RoyBatty
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Your car is a: 1975 124 Spider - 1971 124 Sport Coupe
Location: Locust Grove, VA

Re: Dual carb on a 79

Post by RoyBatty »

MrJD wrote:And you're an EMPI believer right Mark?
Not sure of the tone you're taking here.
But if you aren't already aware if it. Mark has been and is a huge help to all on this forum.

The EMPI carb I bought from him performed great with the one small issue of the choke assy.
And when I discussed this issue with him, he was willing to address the situation if I could not resolve it on my own.
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