sunsilver

Hey guys, I've been searching the forums for where I can pick up BHR coils but I cant figure it out. I have over 90 000km on my car right now with the original coils and I just ordered new new Racing Beat Spark plug wires and I've had my new plugs for months now (waiting for nice weather). Figure I'll do everything at once.... Does anyone know where I can get these? I live in Oakville. and will these coils make a difference?... I hear alot about better mileage and a tiny bit more power than stock.

dozer

iTrader: (3)

try PMing charles r hill

robrecht

I think that depends more on the condition of your current coils. As I suspect you've read, BHR makes no power claims about their coils and to date I don't think anyone has posted before and after dyno graphs with good stock coils vs BHR ones. People have also seen significant mileage increases when installing new stock coils.

sunsilver

Thanks for the help guys, is it worth it to buy BHR coils or just replace with OEM ones?

dozer

iTrader: (3)

BHR coils are supposed to last a lot longer than stock...+ you also get quality work

robrecht

If your NA, and you can change your own stock coils when they go bad more frequently, as they most probably will, I say "no" at least for the sake of playing devil's advocate here. Would love to be proven wrong, however!

Easy_E1

iTrader: (2)

OEM coils will fail. If you want to keep buying them every 10,000 to 30,000 miles. Then get another set of OEM.
If you don't want to have to replace them. If you don't want random misfires. Then get the BHR coil kit.

rotarygreg

yeah, the BHR coils were designed as a reliabilty or longevity mod i think. instead of having to keep replacing burned out coils, these coils are way better and should last a very long time. also, you might want to check this, but i think they come with plug wires. so you wont need/cant use the racing beat wires you orderd.

Easy_E1

iTrader: (2)

Yes they come with new MSD 8.5mm plug wires.

sunsilver

Thanks for the info guys, on a totally un-related note, Im trying to decide right now on which cat-back exhaust I should get, Ive read about all of them in the forums and listened to them here and on you tube. what would you guys suggest, I don't want something that is too loud or cheap sounding, how would you rate the Borla exhaust, it seems like it has the best value to me... any thoughts?

dozer

iTrader: (3)

borla or racing beat are your best bets...

sunsilver

how much would it be to get the racing beat exhaust here in ontario

robrecht

Is that the average life expectancy of the current stock coils, 10-30k miles on an NA RX-8? I know many have failed very early but I've also heard of coils lasting 70k miles and more. Are the current stock coils an upgraded version?

01Racing

Can someone explain to me why GM coils would last longer than Mazda coils in a rotary engine application? I am not trying to be sarcastic, but would like to understand how it works. We run MSD 6A Boxes with MSD Blaster coils and dont get any longer life out them, if anything much less than stock. The only reason we use them is they put out a lot more juice, and we need that at 11,000RPM

\\Konig\\

iTrader: (4)

im on 40k on the stock coils and still going, we'll see how much longer they last!

rotarygreg

ive got almost 90 000km on my coils and it looks to me like they are the originals. The bolts have never been removed as far as i can tell. I also had what looked like original plugs when i got the car with 80 000km on it. planning to do OEM coils this summer. Al, my statement was a little too much of a statement. i guess what i meant to say was should last longer than stock. At least in theory. they havent been out long enough to know for sure. the way i see it, you can burn out a coil in no time by making it work too hard. Ive seen it happen on a few swift GTis when i used to drive one. the lead wire wasnt snapped in all the way and there was actually a gap between the coil and the wire leading to the dizzy. so the coil had to jump 2 X the gap it was designed to. And a known good coil would burn out in a day or two. now i understand thats suzuki garbage and also, its being forced to do something its not made to do. However, wouldnt it stand to reason that any coil that isnt working harder than it has to would have a longer service life? So if a coil pack for a corvette were to be delivering a really nice spark on a vette and then put onto a car with plugs that have a smaller gap than the coil would normally work with, wouldnt that make sense that it could be more reliable? Also, talking to my friend in parts at a GM dealer he said they dont ever sell coils for vettes. I guess only time will tell. I think the product is cool and if i had lots of $$$ i would get it. But i dont, so i wont. lol.

R.P.M.

iTrader: (1)

Some interesting info here about coil packs

http://forums.hybridz.org/showthread.php?t=120533


"The LS1 coils do not saturate until around 8ms, but the spark energy does not increase significantly beyond 6ms. So stick with a dwell setting of 5-6ms. This will keep the coils cooler, and extend their life.

I also measured the dwell for 2nd gen RX7 coil packs (I run these on my turbo car). The max dwell should be in the 1.6ms range. Any more than that and you are just heating up the coils and modules.

The LS1 coils have a much hotter spark that the RX7 units. I may switch over to them on my turbo car, we'll see."

01Racing

From what I can see all the data is based on low revving piston engines

Flashwing

There has been plenty of evidence of coil failure as RX8club is packed with posts about it. The amount of milage the coils last varies and depends mostly on your driving style, and environmental conditions.

The GM Yukon coils will no doubt outlast your stock OEM coils due to the stock coils only seeing between 20,000 - 40,000 miles in their life span. The yukon coils are OEM equipment designed to last 100,000+ miles.

As for issues of mileage increases and power increases about all I can say at this point it those elements will be highly subjective depending on how far gone your stock coils are. If your ignition system is healthy then you might see little to no gains while on the other hand you might have noticable changes in mileage and power.

At the first opportunity BHR will test our coil kit in a controlled environment so we can show whether any gains are possiblle.

At this point, the facts regarding the kit is the coils are of a higher quality than Mazda's OEM coils, they utilize the same dwell characterists as the oem coils while producing a much more powerful spark that will handle the power needs of N/A and FI.

DOMINION

^Thats why people where buying the Mazsport set up.
*EDITED PER REQUEST*

Yup I took mine off my 2004 mt with 45k. Put new ones on. Turns out it was my plugs. But I dont have a way to test them. So to be safe I changed my spark plugs coils and spark plug wires.

BTW, What are the specific dwell times of the Mazsport coils compared to the LS2 coils compared to the oem coils and what are the specifics?

Footman

iTrader: (2)

Does anyone know where I can find technical specifications of the Mazda OEM ignition coils? I mean full specifications, design characteristics, operating curves/temperature everything...

Or is this stuff secret?

DOMINION

Its no secret just hard to find industry inside info. Try asking the right people. Start with some pm's then emails work your way up to the guys that "test" the stuff. Hell call finishlineperformance.com see what they can tell you.

Flashwing

I don't have access to the specific dwell tables for the Mazsport coils or the LS2's.

The "dwell" is going to vary by RPM so there's not any fixed dwell settings as far as I know. The issue is ignition coils operate under certain dwell characteristics either requiring longer or shorter times to build a magnetic field.

The Ls2 coils share the characteristics necessary to operate within the unique dwell settings of the RX8 just as the OEM coils do.

Footman

iTrader: (2)

Interesting read here for newbies:

http://www.ngksparkplugs.com/techinf...000&country=US

Bishop

This is all very confusing...what about for us everyday average Joe drivers of the 8 (as I typed that, it FELT sacrilegious!)? Should I go for the OEMs? I've got 68k on the orginals but given the feel of my 8 lately, I know for sure they're in bad shape