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-   -   coil relocation? (https://www.rx7club.com/3rd-generation-specific-1993-2002-16/coil-relocation-636881/)

imluvinit 03-27-07 07:48 PM

coil relocation?
 
i thought i saw someone making a few of these as kit a couple of weeks ago. i cant seem to find it now. anyone remember this or was i in lala world? thanks

Railgun 03-27-07 08:42 PM

In the for sale section...?

https://www.rx7club.com/non-classifieds-violations-59/fs-%2Aofficial%2A-coil-relocation-bracket-fd3s-thread-info-inside-632294/

imluvinit 03-27-07 08:50 PM

dont think that was the one but itll work...thanks

CMonakar 03-27-07 09:04 PM

This seems counter productive to me. The shorter the plug wires the better.

"We have found through extensive testing that approximately 100mJ provides sufficient energy for most racing applications and if the ignition coil is directly mounted on top of the spark plug (such as in some current production cars) then as little as 50mJ will suffice. "
http://www.mwignitions.com/pdf/mw8.pdf

Diminished ignition power in exchange for a pretty bracket. Why bother?

BuffDaddy915 03-27-07 09:13 PM

Thats an interesting ignition setup CMonakar...any1 know more info on this?

Railgun 03-27-07 09:18 PM

Performance difference is negligible. There are tons of applications with wires much longer than this. And from personal experience, I can't see any difference. If you're that worried about loss, use a lower resistance wire.

BuffDaddy915 03-27-07 09:25 PM

Im not worried tha length of wire...more interested in info of tha ignition systems that are on tha site.

Railgun 03-27-07 09:44 PM

Heh...took me a while to type that up...I started before you posted...:D

But it does look interesting. Though, we've seen potentially good, affordable CDI ignition systems before...look what happened with that...

CrispyRX7 03-27-07 09:47 PM


Originally Posted by CMonakar
This seems counter productive to me. The shorter the plug wires the better.

http://www.mwignitions.com/pdf/mw8.pdf

Diminished ignition power in exchange for a pretty bracket. Why bother?

From the catalogue page 3: "They (the coils) should be mounted in a part of the engine bay that receives fresh air flow." Note the location of the stock FD coils, buried under the UIM sitting directly on top of the engine block. Ima thinkin' thats not a very good location for ignition coils. READ: It's hot in there!

Additionally from page 3: "It is recommended that coil wires should not exceed 1 metre in length." The stock FD wires are about 12-18" in length. The TII wires are about 24-28" in length, which from my understanding can be used with the relocated coils. Well below the recommended maximum length.

Stock FD coils have been proven reliable to well beyond 450rwhp. With suitably sized ignition wires, relocating the coils will increase reliability by keeping the coils cooler and should provide for minimal, if any, reduction in performance.

IMHO,
Crispy

imluvinit 03-29-07 07:09 PM

yeah my main reason is heat and it gives me more room for the injector drivers. on my old race car we actually dynoed the car using diferent length wire to settle the same question and it made not difference power wise and we saw no evidence of ignition break up in the graph. so i think it will be fine.


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