Carb

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Carb

Postby fiat218 on Wed Aug 01, 2012 10:10 pm

If I have a 32/36 dfev on my spider, what size would be bigger and way better
Jim
east grand forks MN
1969 124 as spider
1974 Alfa Romeo (sold
1972 124 spider ( sold
1980 124 2000 carb
1979 124 2.0 dual 4o's
1971 124 1608 Carb
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Re: Carb

Postby djape1977 on Thu Aug 02, 2012 2:44 am

34adf
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Re: Carb

Postby bradartigue on Sun Aug 05, 2012 5:04 pm

fiat218 wrote:If I have a 32/36 dfev on my spider, what size would be bigger and way better


32/36 is big enough for a 150HP+ motor, so whatever you are trying to do isn't the carburetor's fault. As the Weber techs used to say "it is big enough for a Greyhound bus." 34ADF, as mentioned in the previous post, is slightly larger on the primary side but isn't going to dramatically change anything if you already have a 32/36.

If you changed your intake manifold, cams, exhaust, or pistons and the DFEV is having delivery issues then describe what you've done.
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Re: Carb

Postby fiat218 on Sun Aug 05, 2012 10:25 pm

bradartigue wrote:
fiat218 wrote:If I have a 32/36 dfev on my spider, what size would be bigger and way better


32/36 is big enough for a 150HP+ motor, so whatever you are trying to do isn't the carburetor's fault. As the Weber techs used to say "it is big enough for a Greyhound bus." 34ADF, as mentioned in the previous post, is slightly larger on the primary side but isn't going to dramatically change anything if you already have a 32/36.

If you changed your intake manifold, cams, exhaust, or pistons and the DFEV is having delivery issues then describe what you've done.

It a 2.0 I have just took the smog off bad put a 1800 intake on it with the 32/36 ,just seems like a dog! It a 1980 automatic
Jim
east grand forks MN
1969 124 as spider
1974 Alfa Romeo (sold
1972 124 spider ( sold
1980 124 2000 carb
1979 124 2.0 dual 4o's
1971 124 1608 Carb
fiat218
 
Posts: 4959
Joined: Fri May 16, 2008 4:06 pm

Re: Carb

Postby So Cal Mark on Mon Aug 06, 2012 12:52 am

is the throttle opening completely?
Mark Allison
allisonsautomotive.com gear reduction starters for the 124, 131, X1/9, 850 Distributorless ignitions for 124, 131, X 1/9, Monza wheels
X1/9, 131, 124 Spider exhaust system, http://www.fiat500speed.com
starsmark@hotmail.com 909-981-3566
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Re: Carb

Postby fiat218 on Mon Aug 06, 2012 6:09 am

So Cal Mark wrote:is the throttle opening completely?

not positive, i will have to check
Jim
east grand forks MN
1969 124 as spider
1974 Alfa Romeo (sold
1972 124 spider ( sold
1980 124 2000 carb
1979 124 2.0 dual 4o's
1971 124 1608 Carb
fiat218
 
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Joined: Fri May 16, 2008 4:06 pm

Re: Carb

Postby bradartigue on Mon Aug 06, 2012 7:23 am

What you are describing has been performed by many, many people with great success. Work at it one system at a time and we'll help you get it straight. I can assure you that carburetor works wonderfully on all of the TC motors.
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Re: Carb

Postby fiat218 on Mon Aug 06, 2012 1:44 pm

bradartigue wrote:What you are describing has been performed by many, many people with great success. Work at it one system at a time and we'll help you get it straight. I can assure you that carburetor works wonderfully on all of the TC motors.

I believe that, hard to explain, maybe it because my 72 is quick,very quick in acceleration ,and that a 2.0,I don't think anything has been done to the engine, but I'm not sure, it just seems like some thing is holding this car back in power
Jim
east grand forks MN
1969 124 as spider
1974 Alfa Romeo (sold
1972 124 spider ( sold
1980 124 2000 carb
1979 124 2.0 dual 4o's
1971 124 1608 Carb
fiat218
 
Posts: 4959
Joined: Fri May 16, 2008 4:06 pm

Re: Carb

Postby So Cal Mark on Mon Aug 06, 2012 2:35 pm

did you reel in the anchor?
Mark Allison
allisonsautomotive.com gear reduction starters for the 124, 131, X1/9, 850 Distributorless ignitions for 124, 131, X 1/9, Monza wheels
X1/9, 131, 124 Spider exhaust system, http://www.fiat500speed.com
starsmark@hotmail.com 909-981-3566
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Re: Carb

Postby fiat218 on Mon Aug 06, 2012 2:41 pm

So Cal Mark wrote:did you reel in the anchor?

Haha. I think it was up.
Jim
east grand forks MN
1969 124 as spider
1974 Alfa Romeo (sold
1972 124 spider ( sold
1980 124 2000 carb
1979 124 2.0 dual 4o's
1971 124 1608 Carb
fiat218
 
Posts: 4959
Joined: Fri May 16, 2008 4:06 pm

Re: Carb

Postby bradartigue on Mon Aug 06, 2012 5:08 pm

Sluggish Spider with a good carb and manifold, I'd be looking at the ignition advance before the carburetor.

Also worth noting is if you put a stock air cleaner on a DFEV it will be horribly sluggish. I painstakingly restored a 1438 intake manifold to re-use it and maintain a stock look and then I drove the car. Sad. Took the cleaner off, hauled ass. Sprint cleaners and "Meaner Cleaners" work great but stock sucks on that carb.
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Re: Carb

Postby fiat218 on Mon Aug 06, 2012 11:27 pm

bradartigue wrote:Sluggish Spider with a good carb and manifold, I'd be looking at the ignition advance before the carburetor.

Also worth noting is if you put a stock air cleaner on a DFEV it will be horribly sluggish. I painstakingly restored a 1438 intake manifold to re-use it and maintain a stock look and then I drove the car. Sad. Took the cleaner off, hauled ass. Sprint cleaners and "Meaner Cleaners" work great but stock sucks on that carb.

I got the small chrom air cleaner ,box type
on, I never did change the exhaust manifold,u think that it, I check to see if the butterfly's open, one does, the other don't unless it in passing gear, is that how it works?
Jim
east grand forks MN
1969 124 as spider
1974 Alfa Romeo (sold
1972 124 spider ( sold
1980 124 2000 carb
1979 124 2.0 dual 4o's
1971 124 1608 Carb
fiat218
 
Posts: 4959
Joined: Fri May 16, 2008 4:06 pm

Re: Carb

Postby bradartigue on Tue Aug 07, 2012 7:08 am

fiat218 wrote:the other don't unless it in passing gear, is that how it works?


No, you should be able to open both butterflies with the throttle.

Are you absolutely sure you have a DFEV? If the secondary opens by vacuum then you have a DHSA, which would be a sluggish pig...
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Re: Carb

Postby fiat218 on Tue Aug 07, 2012 7:10 am

bradartigue wrote:
fiat218 wrote:the other don't unless it in passing gear, is that how it works?


No, you should be able to open both butterflies with the throttle.

Are you absolutely sure you have a DFEV? If the secondary opens by vacuum then you have a DHSA, which would be a sluggish pig...

Yes I bought it the direct carbs 199 as u went to that page I got the one with the auto choke,http://www.webercarbsdirect.com/Weber_Carburetors_s/2.qm, the first one u see, i got
Jim
east grand forks MN
1969 124 as spider
1974 Alfa Romeo (sold
1972 124 spider ( sold
1980 124 2000 carb
1979 124 2.0 dual 4o's
1971 124 1608 Carb
fiat218
 
Posts: 4959
Joined: Fri May 16, 2008 4:06 pm

Re: Carb

Postby bradartigue on Tue Aug 07, 2012 8:38 am

fiat218 wrote:
bradartigue wrote:
fiat218 wrote:the other don't unless it in passing gear, is that how it works?


No, you should be able to open both butterflies with the throttle.

Are you absolutely sure you have a DFEV? If the secondary opens by vacuum then you have a DHSA, which would be a sluggish pig...

Yes I bought it the direct carbs 199 as u went to that page I got the one with the auto choke,http://www.webercarbsdirect.com/Weber_Carburetors_s/2.qm, the first one u see, i got


You said a butterfly doesn't open until "passing gear" - I don't know what this means.

Are you describing the throttle plates (inside the carburetor) or the choke flaps (on top of the carburetor)? I want to know if the throttle plates open fully when you rotate the throttle linkage.
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