COP Thread
#961
From what I remember, if you rip open the Miata's harness a few inches back from the coil connectors, it used a #12 or #14 (Blue). In no way was it a #16 or #18 feeding the factory coils. I'll have to go look now. I may have used a #14 for power and ground in the cop harness. =)
The AWG table posted above states:
#18 - 2.3a - 6.385ohm/1000ft
#16 - 3.7a - 4.016ohm/1000ft
#14 - 5.9a - 2.525ohm/1000ft
#12 - 9.3a - 1.588ohm/1000ft
Their description of chassis wiring is: "Chassis Wiring is also a conservative rating, but is meant for wiring in air, and not in a bundle."
I can see at high RPM one of these coils pulling ~2a easy. x4 = ~8amps. A #18 is clearly undersized in this example. If I have time I'll test a coil at '8000rpm' and see what it pulls. I will account for compression as well. (66hz sequential or 132hz wasted spark)
The AWG table posted above states:
#18 - 2.3a - 6.385ohm/1000ft
#16 - 3.7a - 4.016ohm/1000ft
#14 - 5.9a - 2.525ohm/1000ft
#12 - 9.3a - 1.588ohm/1000ft
Their description of chassis wiring is: "Chassis Wiring is also a conservative rating, but is meant for wiring in air, and not in a bundle."
I can see at high RPM one of these coils pulling ~2a easy. x4 = ~8amps. A #18 is clearly undersized in this example. If I have time I'll test a coil at '8000rpm' and see what it pulls. I will account for compression as well. (66hz sequential or 132hz wasted spark)
Last edited by lazzer408; 02-22-2008 at 05:09 PM.
#963
Most of the cop coils with an internal ignitor will have similar dwell so they could work. May not as common as the Toyotas. Do other Hondas besides the s2000 coils use the s2000's engine? The Toyota 1ZZFE is found in '00-'06 Toyota Celica GT, Corolla, MR2, Matrix, Pontiac Vibe and probably others.
#970
yeah - I did the same with mine - it lines up well enough. 75 mm bolt I think, and it was a slam dunk, with a short spacer.
Today I got a coil (two) in the mail which I bought as spares, but they have a different angle. The hole is straight off the back of the coil (though offset slightly) instead of on the side. Functionally the same I imagine, but a different packaging. Pretty interesting, I don't know what thye are off of, but they look identical to the other COP from toyota aside form it. Pics if people want them tomorrow.
Today I got a coil (two) in the mail which I bought as spares, but they have a different angle. The hole is straight off the back of the coil (though offset slightly) instead of on the side. Functionally the same I imagine, but a different packaging. Pretty interesting, I don't know what thye are off of, but they look identical to the other COP from toyota aside form it. Pics if people want them tomorrow.
#975
I got the toyota connectors on the way, I got braineacks letter with the contacts and I have weatherpack plugs sitting on my desk.
Its the more expensive approach but I do it once and do it right.
I also got bored tonight and painted my bracket.
http://i27.tinypic.com/9igvf9.jpg
Its the more expensive approach but I do it once and do it right.
I also got bored tonight and painted my bracket.
http://i27.tinypic.com/9igvf9.jpg
#976
'straight style' 90080-19023 coils
"one" of mine isn't straight. They all are the same. It works out well. I just drilled and tapped the plate so it sits flush, instead of needing nuts or screws from the back or anything. I just twirl out a 10mm cam-cap bolt and the coils come off. Except the one in the back, I used the longer bolt and a spacer, and it's probably the best held down part of the entire valve cover.
And this is the "regular" style on my car, as installed now:
To do it the way I did, the tolerances on where you drill the holes are relatively tight, but not unmanagable.
If I had 4 of this "new" straight coil, I would have all the bolts in the front, and the plugs in the rear, I think it would look good.
And this is the "regular" style on my car, as installed now:
To do it the way I did, the tolerances on where you drill the holes are relatively tight, but not unmanagable.
If I had 4 of this "new" straight coil, I would have all the bolts in the front, and the plugs in the rear, I think it would look good.
#978
Exactly. So if we could gather each part number and pics of the corresponding coils it could be beneficial to have that all sorted out. The '01 valve cover I'll be using might be better off with straights, or maybe angled? I don't know yet. There's alot of crap in my way on that valve cover that limits where I can weld on bungs.
#980
Hey Abe, question. Did you JBWeld nuts under your plate so the bolts have something to thread into?