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Healeys with Mikuni Carbs
- Thread starter steveg
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Bob_Spidell
Yoda
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'In the process?' Looks like they're ready to run to me!
What's the advantages to these? Hard to tell function from form, are they constant or variable choke? Is this a kit? Did the offset air cleaners come with them?
What's the advantages to these? Hard to tell function from form, are they constant or variable choke? Is this a kit? Did the offset air cleaners come with them?
OP
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Properly tuned, they should provide near-Weber power with better-than-SU mileage. Accelerator pumps provide livelier pickup.
All these claims have yet to be verified by me - will report back as I learn more. Car runs OK with as-delivered carbs, but some tuning is required. Extensive tuning information available online. Requires reconfiguring distributor for manifold vacuum.
It's a kit from > Vintage Performance Developments - Performance products for vintage street and track cars <
Tons of info on that site.
Kit was just over $1100.
Because my DMD manifold uses horizontal carbs, I had to do a number of mods which aren't necessary with a stock manifold.
V-performance sent me this pic of a Healey undergoing installation - Plenty of room for K&Ns without my extensions. The rings shown on mine attach to the carb venturi with set screws:
All these claims have yet to be verified by me - will report back as I learn more. Car runs OK with as-delivered carbs, but some tuning is required. Extensive tuning information available online. Requires reconfiguring distributor for manifold vacuum.
It's a kit from > Vintage Performance Developments - Performance products for vintage street and track cars <
Tons of info on that site.
Kit was just over $1100.
Because my DMD manifold uses horizontal carbs, I had to do a number of mods which aren't necessary with a stock manifold.
V-performance sent me this pic of a Healey undergoing installation - Plenty of room for K&Ns without my extensions. The rings shown on mine attach to the carb venturi with set screws:
Last edited:
Bob_Spidell
Yoda
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Thanks for the info, Steve.
OP
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The Mikunis have only a mixture-enrichment device - similar to Weber DCOEs. Rather than running the mixture enrichment until the engine's warmed up, as soon as it starts, I pull out the hand throttle to 1500 rpm or so, then push in the mixture enrichment. Trying to keep extra fuel off the cylinder walls. So yes, it's separate from the mixture enrichment.
It's like a motorcycle - you enrich it to start, then once started hold a little more throttle until it's ready to go. Since these carbs were originally made to replace SUs on Harleys, that's probably how they do it.
It's like a motorcycle - you enrich it to start, then once started hold a little more throttle until it's ready to go. Since these carbs were originally made to replace SUs on Harleys, that's probably how they do it.
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That's kind of like the electric enrichment carb on early 3000 Mk II's before they found out how much trouble they were.