Running vacuum from all four runners to one vacuum rail and then run MAP and break boost from it should clean up map a little and maybe even help brakes
This is super cool, I do have a question though. With running these carbs, could you make a plenum box that surrounds the end of the trumpets and adapts to a diameter where you could still run the factory afm? Or would there not be enough airflow through the afm into the stacks to properly modulate the flapper door in the meter? I would imagine that this would work similarly to how an R32-R34 intake manifold would work, seeing as they also use afm's, but instead of fuel injectors being post itb/pre-engine, it would be carbs replacing the whole itb/injector setup. I have strongly considered doing an MX5 swap into my MGB, but I really am not interested in all extra electrical aspects of the swap. This sounds about perfect.
If you ran the factory AFM, you’d be eliminating most of the benefit of the carbs by having that restriction in place. It wouldn’t work well at all I’m afraid.
Broo i am mexican, i love ur video, I would like to do my miata, nobody knows this motor, i bought this car because was my dream, but non start 😂, i tried to do it, just one time start but never didn't again
@@WhatUpTKHere Wink wink, nudge nudge... say no more, say no more ; -) BTW this mod video was showcased on Hackaday.com if you didn't know... hackaday.com/2019/08/08/putting-carbs-on-a-miata-because-its-awesome
how did you deal with the fuel pressure difference between the 40psi of the standard setup and the 2-3psi of the carbs ?? wouldn't the pump overpower most regulators? what did you do with the return line? I think the return line just vents under the car
I’m planning on putting a pair a Su HS4s on my 1.6, can’t stand the pathetic throttle response anymore. If I understand this correctly I can just rip all the junk out and bolt the carbs up with the correct manifold, fuel pressure regulator, throttle linkage and it’ll run and drive no problem?? And then at a later date I can build a something to sort out the timing.? Would a throttle potion sensor be a direct replacement plug and play for the old air flow or would I need extra circuit to get that to work. . Any etc info would be greatly appreciate, mechanical I’m fine with electronic not so much
Yeah, so Evan's set up did run without the timing circuit sorted. I can't remember exactly how Norman Garrett recommended setting it up but his book might mention how to use a Throttle Position Sensor. Might be a bit easier than the MAP sensor hack.
Ah nice, I’ll try and find the book and see what it says. Would I need to do anything else to make carbs work or can I just bolt them up and away I go ? The car is a daily so can’t have it off the road More than a day or so, I’ll fine tune and tweak etc on the go so to speak. All my other cars run carbs so tuning them is no issue
I need to look into doing this too I has a piggy back ecu wired in atm that controls in wonder in It can be used the same way that or maybe run injectors tuned on low rates in the manifold under my webber carby setup hmmm would probably be to much fueling for a na
Any carbs that can deliver the fuel and you can find a manifold for should be fine. Electronics, well, you'll need to find someone to build it but the components are under $50
Do you know where I can buy the whole set up or can you tell me everything or at least share link where I can purchase the carbs it up I want to do the same set up to my AmEx five as well but it’s hard to find out which carburetor from which Motorcycle to somebody fabricate a bracket for the intake manifold to connect the carburetors to like everything if you can please Provide me with the information I need so I can go ahead and do this transformation and upgrade to my car
There’s a variety of ways to do it. I’d reach out to one of the U.K. based companies that does kits and ask them exactly what you need to do this. Evans setup, as you saw here, was assembled from a variety of parts from the second-hand market and thus is not easily replicable in exactly the same way.
Very similar to ITBs, you’re improving airflow into the engine with this setup, and gaining a little power. You can also tune them to suit cams or other upgrades unlike EFI. Also the throttle response is magnificent. It’s not a huge Hp gain or anything, but it’s a fun way to go.
@@WhatUpTKHere i would think that EFI would allow for better tuneability with an ecu upgrade, however i can see how something mechanical like carbs would improve throttle response. Either way, very cool too see, sounds awesome
I'd say, probably a carb is cheaper than an ECU upgrade, plus if you don't have the necessary tools, but want to tune it at home, it is easier with a carb. Obv. EFI is better, if you have the tool, and the money for the ECU. Although I guess dual webers are more expensive than an ECU but idk, lol :D
![How To Do an EXHINTAKE Cam Swap On a Miata! [Project 2SJ Ep10]](/img/1.gif)
Most Webers have cable-operated chokes for cold starts. I used one on my '84 Rabbit, no issues...
I have that set up in my mk 2 ford escort 🤓 I also have polished and ported head and a todi lightend flywheel she's real quick
How good is the throttle response! Love the B6 motor
Running vacuum from all four runners to one vacuum rail and then run MAP and break boost from it should clean up map a little and maybe even help brakes
Smart! Yeah, the brake booster was not hooked up right
Go manual brakes, Wilwood dual masters & done.
Love your thinking
This is super cool, I do have a question though. With running these carbs, could you make a plenum box that surrounds the end of the trumpets and adapts to a diameter where you could still run the factory afm? Or would there not be enough airflow through the afm into the stacks to properly modulate the flapper door in the meter? I would imagine that this would work similarly to how an R32-R34 intake manifold would work, seeing as they also use afm's, but instead of fuel injectors being post itb/pre-engine, it would be carbs replacing the whole itb/injector setup. I have strongly considered doing an MX5 swap into my MGB, but I really am not interested in all extra electrical aspects of the swap. This sounds about perfect.
If you ran the factory AFM, you’d be eliminating most of the benefit of the carbs by having that restriction in place. It wouldn’t work well at all I’m afraid.
Well I wish I found this sooner. I'm doing a 1.6 mx5 swap into my MGB right now 🤣
Broo i am mexican, i love ur video, I would like to do my miata, nobody knows this motor, i bought this car because was my dream, but non start 😂, i tried to do it, just one time start but never didn't again
I hope you can do it! Sounds like the perfect car for Mexico sun ☀️☀️☀️
That's cool and all... but WTF is up with grandma walking backwards around the corner at 4:44 !?
What happens in the North stays in the North...
@@WhatUpTKHere
Wink wink, nudge nudge... say no more, say no more ; -)
BTW this mod video was showcased on Hackaday.com if you didn't know...
hackaday.com/2019/08/08/putting-carbs-on-a-miata-because-its-awesome
it's at 4:54 but nice finde anyway! :D
Swear to god though, I did not think anyone would pick that up
@@DanielKorgel ...or 0:05 even
I'm looking at doing this to my 13b renes rx8 but yeah ecu is the main key point given oil injection pump
Would be cool! Rotaries definitely can be a bit different
Nice! What's the go with the 1.6 'burg - any mods/head work?
Pretty much just the carbs, + headers and exhaust. I think it’d probably respond great to a mild cam like they do with EFI.
how did you deal with the fuel pressure difference between the 40psi of the standard setup and the 2-3psi of the carbs ?? wouldn't the pump overpower most regulators? what did you do with the return line? I think the return line just vents under the car
I believe there was a restrictor or different regulator used.
And no, return line goes to the tank
Else you'd be peeing fuel on the road
I’m planning on putting a pair a Su HS4s on my 1.6, can’t stand the pathetic throttle response anymore. If I understand this correctly I can just rip all the junk out and bolt the carbs up with the correct manifold, fuel pressure regulator, throttle linkage and it’ll run and drive no problem?? And then at a later date I can build a something to sort out the timing.? Would a throttle potion sensor be a direct replacement plug and play for the old air flow or would I need extra circuit to get that to work. . Any etc info would be greatly appreciate, mechanical I’m fine with electronic not so much
Yeah, so Evan's set up did run without the timing circuit sorted. I can't remember exactly how Norman Garrett recommended setting it up but his book might mention how to use a Throttle Position Sensor. Might be a bit easier than the MAP sensor hack.
Ah nice, I’ll try and find the book and see what it says. Would I need to do anything else to make carbs work or can I just bolt them up and away I go ? The car is a daily so can’t have it off the road More than a day or so, I’ll fine tune and tweak etc on the go so to speak. All my other cars run carbs so tuning them is no issue
I need to look into doing this too I has a piggy back ecu wired in atm that controls in wonder in It can be used the same way that or maybe run injectors tuned on low rates in the manifold under my webber carby setup hmmm would probably be to much fueling for a na
Could be tough to tune!
Is there any sort of info on jetting and carb set up anywhere I know this an older video but hey it’s worth a shot
Alas no, forums will be your friend!
What specific Mazdapeed manifold did you use?
Unsure, I think they only made one carby manifold for the B6 tbh
Yep, I'm putting a carb on my Miata.
Nice. It's good fun.
Hi, can I ask what carbs you have? How many progression holes do they have in them?
I think these were Webers? Not sure about "progression holes" sorry!
What would the rough cost be of the electronics set up? And also would any set of carbs that are a reasonable size work?
Any carbs that can deliver the fuel and you can find a manifold for should be fine. Electronics, well, you'll need to find someone to build it but the components are under $50
@@WhatUpTKHere would you build and ship over for a fee?
i wonder if this will work for my fc, i dont really want to gut all the electronics to go carb
Could possibly be done, I’m not sure how the FC handles ignition.
Why not throw on a 12a distributor? You can usually pick them up for cheap
What intake manifold did you use?!!!!
Mazdaspeed I believe, there's only a couple off the shelf options available. Just search Miata carburettor manifold
Do you know where I can buy the whole set up or can you tell me everything or at least share link where I can purchase the carbs it up I want to do the same set up to my AmEx five as well but it’s hard to find out which carburetor from which Motorcycle to somebody fabricate a bracket for the intake manifold to connect the carburetors to like everything if you can please Provide me with the information I need so I can go ahead and do this transformation and upgrade to my car
There’s a variety of ways to do it. I’d reach out to one of the U.K. based companies that does kits and ask them exactly what you need to do this. Evans setup, as you saw here, was assembled from a variety of parts from the second-hand market and thus is not easily replicable in exactly the same way.
Ok thanks
Noice.
What ramair filter length you using?
I don't remember! The owner eventually dumped this for a turbo setup.
Vac hose is the wrong way round it has a one way valve in it
Ha! did not spot that.
Is there really any benefit of the carbs? or is it soley done for the "cool" factor
Very similar to ITBs, you’re improving airflow into the engine with this setup, and gaining a little power. You can also tune them to suit cams or other upgrades unlike EFI.
Also the throttle response is magnificent.
It’s not a huge Hp gain or anything, but it’s a fun way to go.
@@WhatUpTKHere i would think that EFI would allow for better tuneability with an ecu upgrade, however i can see how something mechanical like carbs would improve throttle response.
Either way, very cool too see, sounds awesome
@@GeneralNOH yeah, if you're upgrading the ECU the world is your oyster.
I'd say, probably a carb is cheaper than an ECU upgrade, plus if you don't have the necessary tools, but want to tune it at home, it is easier with a carb. Obv. EFI is better, if you have the tool, and the money for the ECU.
Although I guess dual webers are more expensive than an ECU but idk, lol :D
@@cooperp6429 motorcycle carbs also work and give similar performance benefits. though you might need to do something about the carb jets
4age loves double 45s but no computers and cables. . we kept it simple goods and bads about distributors haha
Great motor the 4AGE!