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hoare85

Changing twin spark Z24 to single spark?

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Does anyone know what would need to be change apart from the distributor to convert the twin spark to become a single spark??

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just remove the wires on the exhaust side lol.

Fuel economy and emissions may suffer...the single spark heads are shaped different and put the single plug in a different location.

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Cool nothing major then :) I couldn't see why anything much would need changing but thought I'd best ask the question..

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Why mess with it? It's not like it's a problematic setup.

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Why mess with it? It's not like it's a problematic setup.

 

yeah...why do you want to mess with it? It has twin spark plugs for a reason...and, if you ask me, it works damn well.

They have twin sparks because of ignition. The engines back in those days had some problems burning all the fuel because of ignition. To fix that, they put in dual spark plugs to double the spark. I don't see any advantage to switching to a single spark plug head.

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yeah...why do you want to mess with it? It has twin spark plugs for a reason...and, if you ask me, it works damn well.

They have twin sparks because of ignition. The engines back in those days had some problems burning all the fuel because of ignition. To fix that, they put in dual spark plugs to double the spark. I don't see any advantage to switching to a single spark plug head.

 

Um. No, they are twin spark for emissions. Z24s have an emissions head. My '76 L20 TOTALLY has a problem with not enough spark, yep because it's old. So do all the old single spark plug engines that purr like kittens. :rolleyes:

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Yeah i know it would have been to do with emissions, only reason i ask is that save replacing twice the amount of plugs and leads, my dads 89 navara was a single spark Z24 an used the exact same amount of fuel as mine and drove just as well maybe a little better as it had half the K's on it but it would hav also been slighty lighter aswell..

 

My plan is to give it a try keep records of fuel consumption and how it runs with single and twin plugs once i have fitted and ran in the engine that i've rebuilt.. I'll let ya's know how it goes and what differences i see when i do it :)

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Awesomesauce. Theoretically it would seem that you'd only need the single plug distributor and (I think) M14x1.25 bolts for the unused holes.

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Um. No, they are twin spark for emissions. Z24s have an emissions head. My '76 L20 TOTALLY has a problem with not enough spark, yep because it's old. So do all the old single spark plug engines that purr like kittens. :rolleyes:

 

I mean, yeah. If you don't burn the fuel, then you just dump it out the exhaust. That sounds like emissions to me.

What's up with the double sarcasm? So your L20 doesn't have a problem with spark, but then your rolleyes emoticon suggests that it doesn't run well. I'm confused. Maybe it's because I'm young.

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Got a buddy with a Z24 in his Datsun 620 that was talking about doing the same thing, just wasn't sure what all is needed. So I'll be keeping an eye on this one. ;)

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i would keep the twin spark setup :rolleyes:

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Awesomesauce. Theoretically it would seem that you'd only need the single plug distributor and (I think) M14x1.25 bolts for the unused holes.

 

 

I seem to vaugely remember one of my co-workers trying this and I think he had running issues without the extra sparks.

Edited by MY1PATH

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