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Old 02-18-2012, 08:12 AM   #1 (permalink)
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Default Dell'Orto carbs on my 1,6L Miata

Hi folks
I'm Manuel from italy
I've bought a carb kit from UK.
I'll use this thread to share information and tips about my installation.
Here there's the kit


I've got also the fuel pressure regulator, RAMAIR filters and linkage for extra air (I don't know the correct english for) to install in the interior.
I'm going to clean all the kit and next i'll revise all the two 2 barrel carburetors.
Bye,
Mauel
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Old 02-18-2012, 08:29 AM   #2 (permalink)
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Default Re: Dell'Orto carbs on my 1,6L Miata

Very cool! I am using A Dell'Orto 34mm carb myself, on my Aprilia 2 stroker

Looking forward to your update!
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Old 02-18-2012, 06:21 PM   #3 (permalink)
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Default Re: Dell'Orto carbs on my 1,6L Miata

I've started cleaning the carbs outside


And removing the old trumpet gaskets.

Tomorrow there will be in Milan the MilanoAutoclassica, a big exhibition for classic car with a lot of markets so i'll buy a revision kit (like this http://www.lanzonicarburatori.com/co...beaeca7c99.jpg ) and i'll start the revision.
By,
Manuel
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Old 02-18-2012, 09:54 PM   #4 (permalink)
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Default Re: Dell'Orto carbs on my 1,6L Miata

Very cool. Will you dyno it afterwards? I'd like to know how the carbs do power-wise compared to fuel injection.
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Old 02-19-2012, 04:20 PM   #5 (permalink)
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Default Re: Dell'Orto carbs on my 1,6L Miata

Wow, flashback to my Fiat 124 days~! On the one hand, trying to keep them running right was often an impossible challenge. But...the sound was great and still resonates in my memory. Good luck.
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Old 04-09-2012, 03:15 AM   #6 (permalink)
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Default Re: Dell'Orto carbs on my 1,6L Miata

I've no free time but i've restored all the first carb with the gaskts and internal parts
here there are some pics





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Old 04-18-2012, 01:16 PM   #7 (permalink)
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Default Re: Dell'Orto carbs on my 1,6L Miata

Fantastic! Can't wait to see it in action...
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Old 04-18-2012, 01:36 PM   #8 (permalink)
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Default Re: Dell'Orto carbs on my 1,6L Miata

very nice my italian neighbour!
i wish something like this would be still possible to run in germany, but it's not tüv legal to put carbs on a fuel injected engine anymore.
what diameter do the carbs have and how are you willing to attach the throttlecable linkage?
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Old 04-22-2012, 03:38 PM   #9 (permalink)
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Default Re: Dell'Orto carbs on my 1,6L Miata

Watching with interest. Have you had any thoughts on how you are going to manage your ignition yet?
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Old 04-25-2012, 04:56 AM   #10 (permalink)
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Default Re: Dell'Orto carbs on my 1,6L Miata

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Watching with interest. Have you had any thoughts on how you are going to manage your ignition yet?
I'll manage the timing with a standalone ECU wich controls only the timing

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very nice my italian neighbour!
i wish something like this would be still possible to run in germany, but it's not tüv legal to put carbs on a fuel injected engine anymore.
what diameter do the carbs have and how are you willing to attach the throttlecable linkage?
It's illegal also in italy (we have very strictl laws on car modifications) but this car will be use only for track days, not as a daily car.
The carbs are 40 mm of diameter with 30 mm venturi
I've got a bracket for the throttlecable linkage
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Old 05-01-2012, 04:37 PM   #11 (permalink)
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Default Re: Dell'Orto carbs on my 1,6L Miata












Finally I've restored all the 2 carbs and I'm waiting 2 minor pieces to install it!
See you soon!
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Old 06-20-2012, 07:21 PM   #12 (permalink)
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Default Re: Dell'Orto carbs on my 1,6L Miata

any updates?
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Old 06-20-2012, 10:27 PM   #13 (permalink)
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Default Re: Dell'Orto carbs on my 1,6L Miata

Good luck with keeping the Delordos tuned. I may be new here but if you look at my Newb Intro you will see I have A ton of experience. Those carbs are the hardest to keep tuned. On my Eunos I started out with them and quickly swapped them for Solex/ Mikunis, big improvement. We then added a turbo chamber, td04s, intercooler, 40mm wg ect.

Best of luck, look forward to the update.
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Old 06-24-2012, 05:33 AM   #14 (permalink)
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Default Re: Dell'Orto carbs on my 1,6L Miata

Just a lil bit update
I have no time to work on my miata
Today i've finally removed the OEM intake manifold and made a fitting test for the carbs
probably within the end of july i'll start and tune the car


Currently I've start to design an airbox (based on calculation obviously)
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Old 06-24-2012, 05:44 AM   #15 (permalink)
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Default Re: Dell'Orto carbs on my 1,6L Miata

Very nice! Do you have a link to buy that kit?
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Old 06-25-2012, 01:02 AM   #16 (permalink)
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Very nice! Do you have a link to buy that kit?
I've bought the kit from a english nutz user
I think it's a self made kit. The good thing is that the manifold are probably suitable for irtbs from bikes or other cars

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Last edited by Number34; 06-25-2012 at 02:06 AM.
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Old 08-19-2012, 05:59 AM   #17 (permalink)
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Default Re: Dell'Orto carbs on my 1,6L Miata

Lil update
Yesterday with some have i've tried to start the car and it...


WORKS and with a great sound!
Today i'll post some vids
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Old 08-19-2012, 03:05 PM   #18 (permalink)
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Default Re: Dell'Orto carbs on my 1,6L Miata


min 5:55
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Old 08-24-2012, 04:29 PM   #19 (permalink)
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Default Re: Dell'Orto carbs on my 1,6L Miata

Good effort

Are you gonna straighten out that linkage?

Last edited by philly; 08-24-2012 at 05:26 PM.
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Old 08-29-2012, 01:23 PM   #20 (permalink)
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Default Re: Dell'Orto carbs on my 1,6L Miata

Very neat project! Looking forward to seeing it running smooth.
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Old 08-31-2012, 01:01 PM   #21 (permalink)
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Default Re: Dell'Orto carbs on my 1,6L Miata

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Good effort

Are you gonna straighten out that linkage?
Wich linkage?
the green one or the red one?
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File Type: jpg 2012-08-24200714.jpg (92.9 KB, 52 views)
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Old 08-31-2012, 07:04 PM   #22 (permalink)
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Default Re: Dell'Orto carbs on my 1,6L Miata

He's referring to the red one. In the pic from post #14 it looks pretty bent. Huh! I just went back and looked at the other pics. Is the linkage an elyptical setup?
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Old 09-01-2012, 12:48 AM   #23 (permalink)
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He's referring to the red one. In the pic from post #14 it looks pretty bent. Huh! I just went back and looked at the other pics. Is the linkage an elyptical setup?
It's a gift from the courier :mad: ..
However it's only a visual damage: fortunatly it works very well!

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Old 09-01-2012, 06:28 PM   #24 (permalink)
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Default Re: Dell'Orto carbs on my 1,6L Miata

Looking forward to see this car running 100%
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Old 09-10-2012, 01:56 PM   #25 (permalink)
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Default Re: Dell'Orto carbs on my 1,6L Miata

Here I am with some interesting news!
I do not remember if I had already written, but the car after being set in motion remained on for a time ranging from 60 to 90 seconds depending on the accellerate and then goes off.
I puzzled for a week to try to figure out where the problem was. I suspected it was because of the lack of fuel but (after I documented on the internet and some books on the mx-5) I thought it was enough to make a bridge of two plug contacts of the flow meter.
In fact, this trick did not work, so the ECU removed power to the fuel pump after the ignition (the car staid in motion because the "tanks" of the carburettors were fullfilled".
At this point I was reminded of another trick to make the pump work force: bridging two pins of the diagnostic plug, the fuel pump continues to run until it is taken off the bridge.
With this trick the car stayis in motion with a regular (it's high, must be adjusted) and I must say that the sound is fantastic!
Next week I will bring the car to a mechanic to check the carburetor, jets etc.
Here's a video for you to understand the sound!


PS the car turns on without any problems after half a turn of the key

Last edited by Georgee; 09-10-2012 at 02:15 PM.
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Old 09-10-2012, 04:44 PM   #26 (permalink)
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Default Re: Dell'Orto carbs on my 1,6L Miata

Looks good and sounds ace.

I was wondering how you doing your timing. As far as I understand, it won't advance the timing properly with the afm removed and the contacts bridged as the ecu is not happy without a signal from the maf (someone correct me if I'm wrong as I'm just regurgitating what I've read).

I have seen mx's run ok like this but I'm sure it will be sweeter if you have it advancing. There are a few ways of doing this if you look into it. The way I'm going to have a go at is to use a piggyback to do a maf to map conversion. Well, that's my plan anyway.

Straighten out that linkage - its messing with my fung shui :-)
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Old 09-11-2012, 02:09 PM   #27 (permalink)
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Default Re: Dell'Orto carbs on my 1,6L Miata

You purposefully added carbs from Britain to a car? Are you a masochist? I thought we called these cars the smart mans British roadster because it didnt have Lucas electrics and British carbs. You should add Lucas electrics or just run a razor blade all over the wiring harness to complete the transformation.
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Old 09-11-2012, 02:58 PM   #28 (permalink)
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Default Re: Dell'Orto carbs on my 1,6L Miata

Quote:
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You purposefully added carbs from Britain to a car? Are you a masochist? I thought we called these cars the smart mans British roadster because it didnt have Lucas electrics and British carbs. You should add Lucas electrics or just run a razor blade all over the wiring harness to complete the transformation.
IIRC there was a guy on Miataturbo.net that ran a carb setup on his "drag" car and made some extremely good times on the track. So, your opion is null and...Well, shouldnt exist.
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Old 09-11-2012, 03:00 PM   #29 (permalink)
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Default Re: Dell'Orto carbs on my 1,6L Miata

I think it is nice to see something different now and then. This definitely fits the bill and I think its a super neat project. Good luck OP!
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Old 09-12-2012, 04:31 AM   #30 (permalink)
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Default Re: Dell'Orto carbs on my 1,6L Miata

Quote:
Originally Posted by Leafy View Post
You purposefully added carbs from Britain to a car? Are you a masochist? I thought we called these cars the smart mans British roadster because it didnt have Lucas electrics and British carbs. You should add Lucas electrics or just run a razor blade all over the wiring harness to complete the transformation.

Post of the year!!
However the carbs are italians
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