Dell'Orto carbs on my 1,6L Miata

Number34 · 02-18-2012, 08:12 AM

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

owm · 02-18-2012, 08:29 AM

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

Looking forward to your update!

Number34 · 02-18-2012, 06:21 PM

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

2ndGearRubber · 02-18-2012, 09:54 PM

Very cool. Will you dyno it afterwards? I'd like to know how the carbs do power-wise compared to fuel injection.

Good-Win Racing · 02-19-2012, 04:20 PM

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.

Number34 · 04-09-2012, 03:15 AM

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

saabracer1 · 04-18-2012, 01:16 PM

Fantastic! Can't wait to see it in action...

Cane · 04-18-2012, 01:36 PM

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?

philly · 04-22-2012, 03:38 PM

Watching with interest. Have you had any thoughts on how you are going to manage your ignition yet?

Number34 · 04-25-2012, 04:56 AM

Quote:

Originally Posted by philly

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

Quote:

Originally Posted by Cane

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

Number34 · 05-01-2012, 04:37 PM

Finally I've restored all the 2 carbs and I'm waiting 2 minor pieces to install it!
See you soon!

96_mx5 · 06-20-2012, 07:21 PM

any updates?

Gunluvr · 06-20-2012, 10:27 PM

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.

Number34 · 06-24-2012, 05:33 AM

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)

user name · 06-24-2012, 05:44 AM

Very nice! Do you have a link to buy that kit?

Number34 · 06-25-2012, 01:02 AM

Quote:

Originally Posted by user name

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

Inviato dal mio GT-S5570I con Tapatalk 2

Number34 · 08-19-2012, 05:59 AM

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

Number34 · 08-19-2012, 03:05 PM

min 5:55

philly · 08-24-2012, 04:29 PM

Good effort

Are you gonna straighten out that linkage?

Mishimoto · 08-29-2012, 01:23 PM

Very neat project! Looking forward to seeing it running smooth.

Number34 · 08-31-2012, 01:01 PM

Quote:

Originally Posted by philly

Good effort

Are you gonna straighten out that linkage?

Wich linkage?
the green one or the red one?

SC Pat · 08-31-2012, 07:04 PM

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?

Number34 · 09-01-2012, 12:48 AM

Quote:

Originally Posted by SC Pat

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!

Inviato dal mio GT-S5570I con Tapatalk 2

kfed · 09-01-2012, 06:28 PM

Looking forward to see this car running 100%

Number34 · 09-10-2012, 01:56 PM

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

philly · 09-10-2012, 04:44 PM

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 :-)

Leafy · 09-11-2012, 02:09 PM

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.

keepitsimple · 09-11-2012, 02:58 PM

Quote:

Originally Posted by Leafy

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.

Mishimoto · 09-11-2012, 03:00 PM

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!

Number34 · 09-12-2012, 04:31 AM

Quote:

Originally Posted by Leafy

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

02-18-2012, 08:12 AM	#1 (permalink)
Number34 Noob Join Date: Nov 2010 Posts: 48	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
Number34 Noob Join Date: Nov 2010 Posts: 48

02-18-2012, 08:29 AM	#2 (permalink)
owm Member Join Date: Jun 2009 Location: Asia Posts: 188	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!
	__________________ Blazing orange 1991 N/A NA

02-18-2012, 06:21 PM	#3 (permalink)
Number34 Noob Join Date: Nov 2010 Posts: 48	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
Number34 Noob Join Date: Nov 2010 Posts: 48

02-18-2012, 09:54 PM	#4 (permalink)
2ndGearRubber Member Join Date: May 2010 Location: Pittsburgh, PA Posts: 597	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.
	__________________ Current: 94 R Package / Former: 99 Silver PEP -Scott

02-19-2012, 04:20 PM	#5 (permalink)
Good-Win Racing Sponsor Join Date: Nov 2008 Posts: 383	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.
Good-Win Racing Sponsor Join Date: Nov 2008 Posts: 383	__________________ Brian Goodwin Good-Win Racing www.good-win-racing.com

04-09-2012, 03:15 AM	#6 (permalink)
Number34 Noob Join Date: Nov 2010 Posts: 48	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
Number34 Noob Join Date: Nov 2010 Posts: 48

04-18-2012, 01:16 PM	#7 (permalink)
saabracer1 Noob Join Date: Jul 2011 Location: Park Hills, KY Posts: 9	Re: Dell'Orto carbs on my 1,6L Miata Fantastic! Can't wait to see it in action...

04-18-2012, 01:36 PM	#8 (permalink)
Cane Member Join Date: Jan 2010 Location: Wiesbaden, Germany Posts: 756	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?
	__________________ http://sushi.derhaddekern.de

04-22-2012, 03:38 PM	#9 (permalink)
philly Member Join Date: Apr 2009 Location: North Wales Posts: 113	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?

05-01-2012, 04:37 PM	#11 (permalink)
Number34 Noob Join Date: Nov 2010 Posts: 48	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!
Number34 Noob Join Date: Nov 2010 Posts: 48

06-20-2012, 07:21 PM	#12 (permalink)
96_mx5 Jr. Member Join Date: Jan 2012 Location: Ontario, Canada Posts: 98	Re: Dell'Orto carbs on my 1,6L Miata any updates?

06-20-2012, 10:27 PM	#13 (permalink)
Gunluvr Jr. Member Join Date: Jun 2012 Posts: 82	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.
Gunluvr Jr. Member Join Date: Jun 2012 Posts: 82

06-24-2012, 05:33 AM	#14 (permalink)
Number34 Noob Join Date: Nov 2010 Posts: 48	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)
Number34 Noob Join Date: Nov 2010 Posts: 48

08-19-2012, 05:59 AM	#17 (permalink)
Number34 Noob Join Date: Nov 2010 Posts: 48	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
Number34 Noob Join Date: Nov 2010 Posts: 48

08-19-2012, 03:05 PM	#18 (permalink)
Number34 Noob Join Date: Nov 2010 Posts: 48	Re: Dell'Orto carbs on my 1,6L Miata min 5:55
Number34 Noob Join Date: Nov 2010 Posts: 48

08-24-2012, 04:29 PM	#19 (permalink)
philly Member Join Date: Apr 2009 Location: North Wales Posts: 113	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.

08-29-2012, 01:23 PM	#20 (permalink)
Mishimoto Supporting Member Join Date: Jun 2010 Posts: 74	Re: Dell'Orto carbs on my 1,6L Miata Very neat project! Looking forward to seeing it running smooth.
	__________________ John Marsteller Mishimoto Automotive

08-31-2012, 07:04 PM	#22 (permalink)
SC Pat Member Join Date: Jan 2007 Location: Inland Empire So. Cal. Posts: 228	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?
	__________________ FastForward SC @ 15psi. non-intercooled on a '00 How do they do that? Now with E-85

09-01-2012, 06:28 PM	#24 (permalink)
kfed Member Join Date: Feb 2010 Location: Las Vegas Posts: 411	Re: Dell'Orto carbs on my 1,6L Miata Looking forward to see this car running 100%
	__________________ ROUGH LOVER. http://bold-move.com/ http://insidetheoutsiders.tumblr.com/

09-10-2012, 01:56 PM	#25 (permalink)
Number34 Noob Join Date: Nov 2010 Posts: 48	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
Number34 Noob Join Date: Nov 2010 Posts: 48	Last edited by Georgee; 09-10-2012 at 02:15 PM.

09-10-2012, 04:44 PM	#26 (permalink)
philly Member Join Date: Apr 2009 Location: North Wales Posts: 113	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 :-)

09-11-2012, 02:09 PM	#27 (permalink)
Leafy Member Join Date: Jun 2012 Posts: 484	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.
Leafy Member Join Date: Jun 2012 Posts: 484	__________________ WPI BS/ME '12 MS/ME '13 WPI FSAE Metal Domination Specialist 1994 Mazda Miata R-package Class=SSM 2006 Subaru WRX Wagon DD Status

09-11-2012, 03:00 PM	#29 (permalink)
Mishimoto Supporting Member Join Date: Jun 2010 Posts: 74	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!
	__________________ John Marsteller Mishimoto Automotive

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