Mototronics/Mercury ING-1A ignition coils
#101
77 cylinders, 4 rotors...
For those who are running the IGN-1A coils long term, have they been satisfactory? I am looking at ignition options for a stock engine, that will not require regular replacement. There are old threads about these coils, and many on those threads have moved on. If anybody has been running these for many miles, please chime in.
#102
Smoking turbo yay
Pretty sure BigCajun has been running a set for a good while. He has the SBG kit.
The following 2 users liked this post by UnknownJinX:
BigCajun (02-12-2020),
kevink0000 (01-10-2020)
#103
Nobody is having any issues at all that I know of. These are monster coils and overkill to some degree, but then the typical RX8 NA application isn’t pushing them anywhere near their limit. Which helps for durability. They’re definitely the go-to for turbo/supercharger use. Comparable to a high $$$ CDI ignition system in performance without the cost.
The following users liked this post:
kevink0000 (01-10-2020)
#104
Based on the info I found on this forum full of talented people, I drafted a wiring diagram for the ign1a harness. They will be split in half for the ease of connection and harness making. And for the ease of making them adapt to other 4 cylinder cars without having to design the bottom part again.
There are few problems that I would love to be answered.
1. for coil ground(B), since they look like they are going in to a common ground, So can I just bundle them(purple blue lines) up and so I can just use a 5 pin connector in the middle instead of 8pin one?
2. in order to handle 19A of current, I guess at least 14 awg wires should be used on terminal E? Can these automotive connector take such diameter?
#105
You gonna eat that?
iTrader: (1)
For those who are running the IGN-1A coils long term, have they been satisfactory? I am looking at ignition options for a stock engine, that will not require regular replacement. There are old threads about these coils, and many on those threads have moved on. If anybody has been running these for many miles, please chime in.
I'll have to go through my papers for exact numbers.
Problem free for me.
I also liked the bracket mounting on the AC a bit further away from the engine heat.
Idk if it actually makes a difference, but I believe there is more air space around them, so less heat.(?)
Very satisfied.
#108
Registered
Based on the info I found on this forum full of talented people, I drafted a wiring diagram for the ign1a harness. They will be split in half for the ease of connection and harness making. And for the ease of making them adapt to other 4 cylinder cars without having to design the bottom part again.
There are few problems that I would love to be answered.
1. for coil ground(B), since they look like they are going in to a common ground, So can I just bundle them(purple blue lines) up and so I can just use a 5 pin connector in the middle instead of 8pin one?
2. in order to handle 19A of current, I guess at least 14 awg wires should be used on terminal E? Can these automotive connector take such diameter?
They are on 4~5 ms now as my dwell was set for d585.
#109
most people still screw it up not realizing that Pin C needs to be grouped and grounded to the respective rotor housing rather than all together on one housing or the other.
There’s really no reason to run more than 3.5 mS dwell as that allows retaining the OE 15A fuse and power supply wire rather than running a separate power supply wire from the battery. These coils will pretty much blow anything else on the market away at that dwell period. It’s less stress on the coils at high rotary rpm as well.
.
There’s really no reason to run more than 3.5 mS dwell as that allows retaining the OE 15A fuse and power supply wire rather than running a separate power supply wire from the battery. These coils will pretty much blow anything else on the market away at that dwell period. It’s less stress on the coils at high rotary rpm as well.
.
Last edited by TeamRX8; 04-21-2021 at 10:37 PM.
#110
Registered
most people still screw it up not realizing that Pin C needs to be grouped and grounded to the respective rotor housing rather than all together on one housing or the other.
There’s really no reason to run more than 3.5 mS dwell as that allows retaining the OE 15A fuse and power supply wire rather than running a separate power supply wire from the battery. These coils will pretty much blow anything else on the market away at that dwell period. It’s less stress on the coils at high rotary rpm as well.
.
There’s really no reason to run more than 3.5 mS dwell as that allows retaining the OE 15A fuse and power supply wire rather than running a separate power supply wire from the battery. These coils will pretty much blow anything else on the market away at that dwell period. It’s less stress on the coils at high rotary rpm as well.
.
True that! I see most of them tight the Engine negative to the battery terminal.... or even the worst take the positive from the top of the alternator terminals.
Good news, even the cheapest( in term of price and quality) have all pin C 's separated long to a single negative eye loop, bad news it is that long people can hook it to the
battery terminal.
On my set up I have both rotors housing joints via braided negative wires over the place of knock sensor/s, dielectric greased/silicone greased/ silicone oiled.
A must read:
Wiring & Grounding
#111
Hi, I was looking for a dwell table to adapt these coils on a RX8 (stock ECU). I did not find anything useful, so I tried to build a table by myself, but as I'm fare from beeing an expert I'd like to put the table here for discussion before I do some harm to any hardware.
My approach followed the AEM intructions (3ms of dwell, not more that 40% duty and 9ms). I did setup the 3ms for 12,75V whenever this did not violate the 40% duty rule (9ms was not an issue). For the other voltages I multiplied with 12,75V/xV. These are the tables in ms, duty cycle and mazdaedit (ms*256):
Can someone also point out, what kind of stress these settings put on the wireing harness (how to calculate)?
Thanks and best regards! Miro
My approach followed the AEM intructions (3ms of dwell, not more that 40% duty and 9ms). I did setup the 3ms for 12,75V whenever this did not violate the 40% duty rule (9ms was not an issue). For the other voltages I multiplied with 12,75V/xV. These are the tables in ms, duty cycle and mazdaedit (ms*256):
Can someone also point out, what kind of stress these settings put on the wireing harness (how to calculate)?
Thanks and best regards! Miro
#113
try looking at the diagram in post #70 of this thread.
nevermind, I already gave that to you in the other thread you were asking this. See my response there to your questions that came after I posted the same diagram for you.
.
nevermind, I already gave that to you in the other thread you were asking this. See my response there to your questions that came after I posted the same diagram for you.
.
Last edited by TeamRX8; 07-08-2022 at 02:46 PM.
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