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Disagree. Internet forums like this are resource of information for many, not just for the one who asked the question.
Besides. Now when I have this information I will digest it, I wouldn't say it was wasted. I shelved this project, true. But I didn't cancel it. I'm kind of perfectionist. Now I see to keep this affordable I need to compromise. I need to do a research on COP's and their parameters. The moment I find an affordable COP that can run 15k RPM in a four-stroke my project will go alive again.
Sorry I re-read it and it does sequential injection not ignition - my bad.
Nothing wrong with wasted spark there are loads of high performance cars putting out 700RWHP using wasted spark. Also wasted spark coils also seem to be more robust than COP's.
Sorry I re-read it and it does sequential injection not ignition - my bad.
Nothing wrong with wasted spark there are loads of high performance cars putting out 700RWHP using wasted spark. Also wasted spark coils also seem to be more robust than COP's.
True to a certain degree. The future is COP, and you still ignore the spark polarity issue with wasted spark.
Anyhow, there is light at the end of the tunnel. MegaSquirt with 12 cylinder discrete spark.
More information for those interested, I hope ronbros does not mind?
Toyota 1ZZ COP's are reported to run at this frequency, so they can be used with wasted spark in our V-12.
The 1ZZ engine was equipped in various automobiles:
Toyota Allion
Toyota Avensis
Toyota Caldina
Toyota Celica GT
Toyota Corolla
Toyota Isis
Toyota Matrix XR
Toyota MR2 Spyder
Toyota Opa
Toyota Premio
Toyota RAV4
Toyota Wish
Chevy Prizm
Pontiac Vibe
Lotus Elise
This is due to way a dual plug coil works. Electrons move from one plug thru the coil to the second plug. If plugs are designed for certain polarity - like these "grooved NGK's" - then the electrons move the wrong way in one of plugs and there is nothing you can do about it. You may consider this a minor issue, but it still is an issue.
I didn’t understand the plug polarity issue so I let it go, but maybe I have another assumption wrong.... in wasted spark, I’d have thought you’d still have 12 coils. Just the signal wire would get split to two coils, not one coil split to two plugs?
Yes, that's the way you could do it with COP's. But the original wasted spark (coil pack) has one coil with two plugs connected to it in series, one on each end.
... in wasted spark, I’d have thought you’d still have 12 coils. Just the signal wire would get split to two coils, not one coil split to two plugs?
As far as I know, that's the way the Ford coilpacks work. A 6 cylinder car still has 6 coils, but to eliminate the need for phasing coils 1,5, 4,6 and 2,3 fire simultaneously. I've never seen a coil connected in series through the plug, I can't see that working as you're mixing the low tension trigger and high tension firing wiring.
All I know is the Ford system work and works well. It meets emissions and gives a very nice spark, so who am I to second guess the Engineers who knew what they were doing?
Last edited by Jagboi64; Jul 26, 2018 at 06:09 PM.
Well, then have a closer look. Single plug coil has one end of secondary coil (high voltage) grounded inside of case. Dual plug coil has this end connected to the second plug. You need some sort of continuity tester for doing this simple test.
Edit: But indeed, it is not my job to teach people, so if you wish to believe there are two coils inside of one case so be it. Just for you.
Last edited by Segfault; Jul 26, 2018 at 06:30 PM.
The polarity is completely irrelevant -22kv or +22kv will produce exactly the same spark on the same plug.
Any ignition coil is 2 coils 1 primary and 1 secondary. The voltage increase is a direct relationship to the winding ratio. A Wasted spark coil is no different it is still 1 primary and 1 secondary with 2 plugs connected to the secondary,
True to a certain degree. The future is COP, and you still ignore the spark polarity issue with wasted spark.
Anyhow, there is light at the end of the tunnel. MegaSquirt with 12 cylinder discrete spark.
Look, folks. You either are capable and willing to learn or you are not. If you fail to understand my goal - which is modern engine management without compromises and flaws - then there is nothing I can do. My condolences.
The polarity is completely irrelevant -22kv or +22kv will produce exactly the same spark on the same plug.
Any ignition coil is 2 coils 1 primary and 1 secondary. The voltage increase is a direct relationship to the winding ratio. A Wasted spark coil is no different it is still 1 primary and 1 secondary with 2 plugs connected to the secondary,
O'brother, what an illiteracy. Do you really think both plugs would fire when connected in parallel as you imply? The one with wasted spark will fire, because it works with a cylinder without increased pressure and fires at much lower voltage. This will use up all the energy and the other plug - the one which you need will never fire. Your engine will not work. Period. Besides, it is kV, not kv, metric system is case sensitive, all units named after a person are uppercase. Lowercase "v" is used to denote velocity.
I'm leaving this thread now, interacting with idiots in not my idea of having fun.
Hey Ron - Any chance you'd share some details on your headlights?
.
way back 1995, found at Walmart both the outside lights 5"LED i mounted them in the buckets(little tricky getting adjusted),but is OK much brighter than factory.
the inside are early projector beam great for low beam.
that was 25yrs ago,, if doing it today, definatly use much better lighting systems , but it can be done!
