GUITARJUNKIE28

that idiotic statement doesn't apply to anything in this thread.

rx7lover0147

yes please forgive me i lost train of thought when i started typing that lol. but i am not very familiar with haltech i have been more interested in a microtech and i know the microtechs use a ignitor box that plugs into the microtech and i am just making sure that the haltech does not use that i just bought a E8 with bosch coils and i guess my real question is will those be able to just plug up and work or will i have to do something special.

fc3s.org

With the E8 you will have to have something to fire the coils. The X4 or X6 Microtech does that, but Haltech has no "box" persay that will. You can get (2) dual channel ignitors, and that will work. Either Haltech or another brand is fine. You can also use MSD boxes, but that can get expensive, and they are alot larger than the Haltech units.

Claudio RX-7

iTrader: (1)

The simple answer to your question, yes, you can just connect power and gnd to those coils, feed the proper haltech output to it, configure your spark output to constant charge, and you can start by using 3.5mS for dwell, but like this post has gone on saying, you can run more than that to get more power out of them.

rx7lover0147

thanks guys that really helps me out alot and i appreciate the feedback i am a ****** noob so bad lol. so please forgive me if it seems i ask stupid questions.

13BT510

im understanding what your saying - and im saying that the coils can (and evidently DO) handle it without a problem. More over im going to say that to burn out an LS1 coil in less a short period of time the problem is not with the coil or the charge time but either the wiring or the setup. The reason i say this is i have seen with my own eyes LS1 coils running on a bench with a spark gap of half an inch with a charge time of over 8ms at 14V for over 10 hours continuosly at 26000 sparks per minute...thats 15.6 million sparks in 10 hours at a charge time greater than GM suggest and the coils did not fail.

Are you working the coils harder - of course, does that matter? No those coils can handle it.

What should you charge them to? GM charges them between 4 and 4.5 ms so i would have no problem standing by a set of them running all year long in any application with that sort of charge time numbers.

RETed

Are you talking about pressures over 100psi and with gasoline atomized into the "chamber" to perfectly mimic a combustion chamber?


-Ted

GUITARJUNKIE28

anything above 100% charge-time is still 100%. you can't get any higher. you were NOT running an 8ms charge time (even if you had it set at 8ms), sparking them 26000 times a minute....unless you found a star-trek time wormhole that we should all know about.

13BT510

Well i cannot confirm nor deny that i founf a star-trek worm hole - because then i would have to kill you...and everyone reading this thread.
reTED we are talking about testing the electronic properties of this coil here and whether or not its likely to "burn out" - load on the coils is not dependant on cylinder pressure, all you would be changing by adding that variable into the equation is the resistance across the electrode. Even then we were running a half inch air gap - if your running a half inch air gap on your plugs i suggest you regap them ! Id say the air gat being about 20 times greater than your plug gap makes up for a cylinder pressure around 9 times atmospheric pressure.
and citarjunky your right the coil isnt charging for 8ms for each firing of the coil - its charging to about 350us less than the max time period available (because thats what we told it to in the spark break time).
My point being - you can run those coils to the limit and they are still super reliable.

Claudio RX-7

iTrader: (1)

I think that what ReTed ment was that with a coil mounted in the engine compartment, soaking heat from the engine, that might increase the stress on it, but either way, im with you on that 13BT510, i think those little coils are up to the task. Like i said before, those V8 guys push them hard as well, and those V8 engine heat up like a mother@#$% so.

Claudio RX-7

iTrader: (1)

I think that what ReTed ment was that with a coil mounted in the engine compartment, soaking heat from the engine, that might increase the stress on it, but either way, im with you on that 13BT510, i think those little coils are up to the task. Like i said before, those V8 guys push them hard as well, and those V8 engine heat up like a mother@#$% so.

I would say this though, i have seen a coil bubble up and die once, it was a Mitsubishi EVO8 with AEM, but i dont know what kind of spark time it had set though i didnt work on it, not a pretty site, , it had a big plastic snot like bubble ontop of it.

dubulup

my math says the leading fires 42,000 times a minute @ 7k rpms

6 faces to combust in one rotation...one coil in wasted spark.

F1 - R1 - F2 - R2 - F3 - R3


oh and my question is, are we talking LS1 coils from a V8 engine?

GUITARJUNKIE28

7k rpm, one fire per revolution, then wasted leading spark = x2....14k

dubulup

^so your leading coil only ignites one face of one of your rotors per revolution

I don't know about you, but my leading fires on all faces of both of my rotors...and I have 6 power strokes in my 13B per revelution.

The only thing wasted spark means is...When F1(front rotor - first face) ignites, the coil (since it has two wire leads on it) is blasting the spark plug in R3 exhaust stroke.

Then when R1 ignites...yep I think you picked it up...F1 gets a spark in the exhaust stroke.

(Just in case)
Then when F2 ignites...R1 gets a spark in the exhaust stroke
Then when R2 ignites...F2 gets a spark in the exhaust stroke
Then when F3 ignites...R2 gets a spark in the exhaust stroke
Then when R3 ignites...F3 gets a spark in the exhaust stroke
Then back to the beginning
Then when F1 ignites...R3 gets a spark in the exhaust stroke

wasted spark doesn't mean the coil fires twice...it means the coil has two leads and they fire at the same time (off one signal), one just happens to fire in an exhaust stroke.

so, I stand behing my math that 2 rotors x 3 faces x 1 coil x 7000 revolutions per minute yields...wait let me think about this again, ummm....42,000 charge and fires...but if you want to add the spark plugs into this then yes x2 per ignite signal...84,000sparks half of which do nothing. However the coil is only firing 42,000 times per revolution


oh and my question is, are we talking LS1 coils from a V8 engine?? or is there some coil with the "LS1" name?

davedge

Yes, these coils come from the GM "LS1" series engine. There have been a couple variations on design, but for the most part they are functionally very similar.

Also, to clear the airwaves, you CAN use the LS1 coils on both X-series or E8/E11v2. Running paired/waste spark on the E6X's works fine. Running fully direct fire with the E8's works fine.

Now, the only difference in setup, that I would recommend, would be sourcing your +12vdc. The E8 has provisions for this, with a seperate fused ignition wire, where the E6X does not. It is a larger gauge wire(on the E8), and definitely up to the task of providing voltage to the coils. With the E6X, you might be better off running a seperate +12vdc, and running your grounds direct to the chassis.

No further confusion is needed.

dubulup

Good info! So I take it these coils are 3-wire.

this was suppose to say per "minute" (if you are at 7000rpms for a full minute)

davedge

You are mostly correct. The LS1 plug has 4 wires. When using the Haltech, you will only use 3 of them. The fourth is for feedback to the stock GM ECU, and is not necessary for use with a stand alone.

GUITARJUNKIE28

you have a 6 rotor?

you need to take an engine apart and study the internal workings of it. you're backwards. rotor turns 1/3 crankshaft speed, not 3x.

but if you wanna talk about spark events, i've got the msd leading coils, so i've got like 20+ spark events per rotation. but it's the charge time/duty cycle that we were all talking about.

read more, talk less.