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Old 06-16-2007, 10:57 PM
  #27  
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Originally Posted by ChrisRX8PR
I have gotten about 9-10k miles with the turbo on.

Well I dont know if I should be talking about this and no one should take my word as fact but from what I understood when I spoke to Scott at Mazsport, he is working on a direct replacement coil pack that features stronger coils, both heat resistant and current wise. He mentioned they should be considerably cheaper than buying an HKS Twin Power and that he's just working on the plugs/wires to make them a plug-n-play affair. They are supposed to be available over the next month or so. Then again, I dont work for Mazsport and therefore this is just speculation....

Chris...Esmeril

Wow this thread brings back bad memories.....exactly what I went thru.......exactly.

Reread the type 3 thread in Mazsport section, if I am not mistaken I had those same problems. I believe the root problem was that one of the coil packs was not grounded properly.

The mad scientist always has something up his sleeve and in the works for something better and more reliable.....
Old 06-18-2007, 08:49 AM
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Doesn't Pettit Racing offer a coil relocation kit? I believe I saw a something on that at some point before.
Old 06-19-2007, 02:18 AM
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For more than 350 whp i believe you are ok with just hks ignition amplifier..I have this and i also got the okada coils so i ll have the top notch of ignition to get past the 400whp mark easily(offcourse with the other mods i m planning)

If you want to spend some money get hks+okada...I believe you will be more than satisfied
Old 06-19-2007, 07:51 AM
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Hello Chris

I've gon the same route. The ignition is just so much better. I sensed the difference from the emissions. The mixture seems to be burning much better. I am yet to check the levels though. The car is also more responsive.

I got the engine stripped btw. I think I will get away with reinforcing the front housing with extra dowels. Everything else looks fine.

Sas
Old 06-19-2007, 09:11 AM
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^Fantastic CRH...Excellent..Lets see now when i ll get the turbo kit finally ;( big backorder...
Old 06-21-2007, 01:46 PM
  #32  
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Not a problem Charles...I trust u mate...I am still waiting for the fd rotors job to be done and then shipped to me so i have patience-and i might have lost my licence so no worries...
Old 06-21-2007, 03:02 PM
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You should have them delivered here at my house so I have a reason to go to Thessaloniki and deliver them personally!
Old 06-21-2007, 03:10 PM
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Daaaamn u r very very good and polite...Not the first impression though.. Offcourse u should come here to deliver them to know me better...Greeeeeeeeeat chance
Old 06-21-2007, 03:42 PM
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I haven't been to Thessaloniki in a couple of years, so it would be a great excuse.
As far as being polite? No, not particularly. I don't suffer fools gladly.
Old 06-21-2007, 07:32 PM
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accuvolt any good for us?
OD
Old 06-21-2007, 10:34 PM
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I know I'm interested in the Okada coils to see if they actually make a difference- if so, Ray, I may order a set from you in September when I get my turbo going.
Old 06-22-2007, 01:48 AM
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U r welcome MM...
Charles cant wait...I hope i ll have them beofore 15july...As long as the rest of the kit tough
Old 07-08-2007, 12:09 AM
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Anybody know any info. about Mazsport and his work on coils?
Old 07-08-2007, 09:05 AM
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heat soak temp measured with laser after 20 min drive in 90-95 ambient is 175-180 F.
olddragger
Old 07-08-2007, 10:18 AM
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That's pretty cool.
In 100° - 105°F ambient, my coils are at least 200°F.
Typically, everything that touches the keg is coolant temp (i.e. 220°F) except the alternator, which is usually at least 240°F.
Old 07-08-2007, 06:38 PM
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i can believe it without problem.
coils, wires, plugs and fuel pumps(since I track a good bit) are now classified as maintenance items for me.
damn air flow.
coming off a 20-25 min track session the engine bay is actually only slightly warm and most peripherals are only a little on the warmer than warm side. Not "hot". You can keep your hand on the coils. I will laser them in august at road atlanta.
Short of a vented hood --IMHO there is not much more to be done.
olddragger
Old 07-09-2007, 03:03 AM
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Hey, does anybody know about X-Power ignition booster versus HKS DLI II ignition amplifier?

I'm hearing the X-Power may be just as good, but who knows more on this?

http://www.gruppe-s.com/Evo/evoeng.htm

Note- Nah, don't own an evo, but listed here, as you can see the x-power ignition booster in comparison to HKS ignition amplifier.
Old 07-09-2007, 09:41 AM
  #44  
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whooo ha ha ha ....pay no attention to the man behind the green curtain.....

in OZ, anything is possible.....
Old 07-09-2007, 02:49 PM
  #45  
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Originally Posted by olddragger
Short of a vented hood --IMHO there is not much more to be done.
olddragger
You could relocate the coil pack assembly by purchasing the HKS harness and reworking it to simply extend the coil wiring, available separately and costs $195 or so plus some misc electrical supplies .... you could get around a 4 ft extension range

http://www.sp-power.com/catalog/prod...ducts_id=10469

I was intending to relocate mine down near the plugs with short plug wires, but after reading over the rules decided it wasn't legal for my class. There's a lot of open room on that side of the engine for airflow/cooling ...

Last edited by TeamRX8; 07-09-2007 at 02:59 PM.
Old 07-11-2007, 12:18 PM
  #46  
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Originally Posted by MazdaManiac
More importantly (since the main "ground" for the coils are actually the spark plugs - hard to get a better ground than that), power the coils directly from a high current location on the loom instead of where they are now, which draws current through a single 18ga wire that has to travel through the PCM first.
Or it may just be this way:

-The main ground for the coils is not the spark plug. Spark plug ground has nothing to do with the path of current powering the coils.

-Coil current does not flow through the PCM.

Originally Posted by MazdaManiac
Electricity only flows in one direction - from negative to positive.

In reality, the electrons flow from the negative side of the battery, through the engine block, across the gap, up the plug wire, through the coil windings (where the high voltage is exchanged for 12v at high current) and up a little 18ga wire through a tortured path to the battery positive.
-For a short period after the gap first breaks down, current flows in the opposite direction in the primary circuit. There are also oscillations (i.e. current flowing in one direction, then the other) after the spark is extinguished.

-In the described series circuit, the secondary of the coil has a resistance of about 10,000 ohms. Then there is the resistance of the gap itself, and in some cases a few k of resistance is purposely included in the plug wire for such things as radio interference suppression. And finally there is this 'little 18ga wire through a tortured path'. Its resistance happens to be less than 0.05 ohm.
Old 07-11-2007, 01:29 PM
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Originally Posted by Delmeister
Or it may just be this way:

-The main ground for the coils is not the spark plug. Spark plug ground has nothing to do with the path of current powering the coils.
Uh, how do you intend to explain that? Have you even looked at the wiring diagram?

There are 4 paths for electricity through the coil:
1) The trigger input
2) The power supply
3) The ignitor ground
4) The plug wire tower

#1 comes through an 18ga wire directly from the PCM. #2 comes through an 18ga wire that is bundles to the other coil inputs down to an 18ga wire that is paired off to the PCM though the 15A engine fuse and balanced across ground by a "condenser" (a capacitor).
#3 is another 18ga wire bundled to the other coils similarly and #4 is obvious.
When the coil secondary current flows, which path do you think it takes?
Do you really think that the current across the ignitor is greater than the current across the plug?

Resistance is only a tiny part of the story, since the voltage is exchanged for current.
Old 07-11-2007, 05:53 PM
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I need olddragger to help me with this. He appears to understand you.
Originally Posted by MazdaManiac
Uh, how do you intend to explain that? Have you even looked at the wiring diagram?
Uh, yes. Have you? But I have to admit I don’t know all the details. I would like to know what you know. In the meantime I will respond based on how I believe the system works.

Originally Posted by MazdaManiac
#1 comes through an 18ga wire directly from the PCM.
This is the signal wire from the PCM, and is the only connection to it. I believe it is a 5 volt, 3 ms pulse. It carries a very small current, a few ma at the most. End of story. It plays no part other than to turn the power transistor on and off.

Originally Posted by MazdaManiac
#2 comes through an 18ga wire that is bundles to the other coil inputs down to an 18ga wire that is paired off to the PCM though the 15A engine fuse and balanced across ground by a "condenser" (a capacitor).
Holy smokes! Why do you ask me if I looked at the wiring diagram when you obviously have not? There is NO power connection to the PCM that pertains to the operation of the coil!


What you are basically saying here is that power for the coil primaries comes from the battery through a fuse (you forgot the ignition switch). So what? And what is this about the condenser (thanks for the clarification by the way) balancing things. It’s there as a high frequency noise suppressor. If there is any concern over excessive resistance in the primary circuit, as olddragger seemed to have, then he could run four separate wires directly from the battery to the coil positve voltage inputs. The same goes for the primary coil grounds.

Originally Posted by MazdaManiac
#4 is obvious.
When the coil secondary current flows, which path do you think it takes?
It probably takes the path you said (we should be a bit careful here), and let’s assume you are correct. The important thing here is that although both the primary and secondary return their respective currents to the battery negative, they do it through two different ground paths. The resistance of the primary circuit is only a couple of ohms, so if you introduce a couple of ohms through a bad connection, you could be dead in the water. The resistance on the secondary side is many thousands of ohms. It couldn’t give a tinker’s damn about even hundreds of ohms.

Originally Posted by MazdaManiac
Do you really think that the current across the ignitor is greater than the current across the plug?
Yes. I believe you yourself said that low voltage high primary current is exchanged for low current, high secondary voltage. Look, the peak primary current is, say, 5 amps. The secondary coil resistance is, say, 10,000 ohms. If the secondary current were just equal to the primary current (let alone much greater), the voltage drop in the secondary coil resistance would be 50,000 volts, so there would never be anything available for the spark (by the way, I don't mean to be critical but current flows through things, voltage is developed across things)

Originally Posted by MazdaManiac
Resistance is only a tiny part of the story, since the voltage is exchanged for current.
Resistance is a big deal in the primary. It is a relatively insignificant issue in the secondary. But it was you who made such a fuss over that 18-gauge wire as it pertained to secondary current. I think you are going to drive me crazy .
Old 07-11-2007, 06:18 PM
  #49  
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Just as a matter of curiousity,has anyone dismantled the plug wire tower on a failed coil?
Old 07-11-2007, 07:02 PM
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Yes. I've cut a few of them up. Not much to see. The ignitor is what fails and its damage is usually internal unless it outright fries (I've done that a few times.


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