1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Ignition Coil Upgrade

Thread Tools
 
Search this Thread
 
Old 06-13-07, 05:12 PM
  #1  
Rotary Enthusiast

Thread Starter
 
'84-12A-GSL's Avatar
 
Join Date: May 2007
Location: Canada
Posts: 770
Likes: 0
Received 0 Likes on 0 Posts
Ignition Coil Upgrade

Has anyone ever upgraded their stock coil? If so, what brand/model did you choose?
I was looking at Accell, but most of their coils are only good up till 6500 RPM, and their "Racing" coil which is good till 8500 RPM is only for GM. Im looking for a canister style, I can mount them in the stock location.
Old 06-13-07, 05:18 PM
  #2  
www.ohiorotaries.com

 
clbsinvaders's Avatar
 
Join Date: Apr 2006
Location: Columbus, OH
Posts: 523
Likes: 0
Received 0 Likes on 0 Posts
MSD Blaster 2. Got 2 in right now, but a lot of people only do the leading side.
Old 06-13-07, 05:39 PM
  #3  
Rotary Enthusiast

Thread Starter
 
'84-12A-GSL's Avatar
 
Join Date: May 2007
Location: Canada
Posts: 770
Likes: 0
Received 0 Likes on 0 Posts
Did you notice a difference in the "smoothness" of the engine? Also, did you need to modify anything else, or just removed the old, and connect the new...plug and play.
Old 06-14-07, 06:59 AM
  #4  
Full Member

 
DavidMyers53's Avatar
 
Join Date: May 2006
Location: Statesville, NC
Posts: 244
Likes: 0
Received 0 Likes on 0 Posts
I did DLIDFIS and used two MSD Blaster coils on the leading with HEI igniters. Trailing is stock. It will rev to over 8K. I know that's not good for the engine, but it sure does sound great!

- David
Old 06-14-07, 12:29 PM
  #5  
Lives on the Forum

 
Kentetsu's Avatar
 
Join Date: Jun 2004
Location: Grand Rapids Michigan
Posts: 11,359
Received 14 Likes on 11 Posts
Look in the FAQ section for the 2nd gen ignition upgrade. Cheap and easy, and works great...
Old 06-14-07, 12:40 PM
  #6  
Full Member

 
SunRedRX7's Avatar
 
Join Date: Nov 2001
Location: Kenmore, NY
Posts: 136
Received 2 Likes on 2 Posts
If you use MSD BLASTER 2 coils and plan on mounting them horizontally(like the stock ones), get the HIGH VIBRATION ones http://www.jegs.com/webapp/wcs/store...0474_-1_745372

As they are meant for mounting in any position, while the other ones are only meant to be mounted vertically.
Old 06-14-07, 01:53 PM
  #7  
What?

 
John64's Avatar
 
Join Date: Sep 2003
Location: CT
Posts: 3,833
Likes: 0
Received 1 Like on 1 Post
As sun just said. I orjust ordered MSD 8222 units which are high vibration and ment to mount like the factory units.
Old 06-14-07, 04:18 PM
  #8  
Full Member

 
SunRedRX7's Avatar
 
Join Date: Nov 2001
Location: Kenmore, NY
Posts: 136
Received 2 Likes on 2 Posts
Originally Posted by SunRedRX7
If you use MSD BLASTER 2 coils and plan on mounting them horizontally(like the stock ones), get the HIGH VIBRATION ones http://www.jegs.com/webapp/wcs/store...0474_-1_745372

As they are meant for mounting in any position, while the other ones are only meant to be mounted vertically.
Heres the proper link to the coils to get
http://store.summitracing.com/partde...5&autoview=sku
Old 02-09-14, 02:58 AM
  #9  
Full Member
 
fearfulear69's Avatar
 
Join Date: Jan 2014
Location: canada
Posts: 56
Likes: 0
Received 0 Likes on 0 Posts
85 coils in a 79?

can i take the coils out of my 85 rx-7 and put in my 79 rx7?
Old 02-09-14, 12:16 PM
  #10  
1st-Class Engine Janitor

iTrader: (15)
 
DivinDriver's Avatar
 
Join Date: Jun 2008
Location: Chino Hills, CA
Posts: 8,376
Received 26 Likes on 24 Posts
Originally Posted by SunRedRX7
Heres the proper link to the coils to get
http://store.summitracing.com/partde...5&autoview=sku
"Page not found"

Try this one:

http://www.summitracing.com/parts/msd-8222
Old 02-09-14, 02:27 PM
  #11  
Your brain on triangles..

iTrader: (4)
 
Jingkun's Avatar
 
Join Date: Dec 2010
Location: Cedar Park, Texas
Posts: 379
Likes: 0
Received 0 Likes on 0 Posts
I swapped my leading over to the 2nd gen coil. I found that it helped the smoothness alot and gave it some extra pep. I thought about doing the MSD blaster coils but I read somewhere (probably on the packaging) that they don't operate properly unless they are oriented vertically and the stock coil housing didn't do that so I passed on the MSDs.
Old 02-09-14, 05:13 PM
  #12  
Full Member
 
fearfulear69's Avatar
 
Join Date: Jan 2014
Location: canada
Posts: 56
Likes: 0
Received 0 Likes on 0 Posts
I just installed the blaster coils the ones I have say u can mount them anyway u like even upside down. Sadly tho it didn't fix my my problem I'm starting too think its the carb or distrubutor cause my compression is perfect.
Old 02-09-14, 06:54 PM
  #13  
Senior Member
iTrader: (3)
 
placd1's Avatar
 
Join Date: May 2013
Location: Kelowna, BC
Posts: 434
Likes: 0
Received 0 Likes on 0 Posts
Fearfulear69 exactly what problem are you experiencing? On another note, I guess I'm tempting fate but I have the regular Blaster 2 coils (red) and have mounted them horizontally in the stock location with no ill effects yet. Spoke to a couple other people and they've had their Blaster coils similarly mounted in the stock location for years and they haven't failed yet. Hoping the odds are on my side here!
Old 02-09-14, 10:43 PM
  #14  
I have a rotary addiction

iTrader: (18)
 
NCross's Avatar
 
Join Date: Jun 2006
Location: Columbia, Tennessee
Posts: 4,815
Received 23 Likes on 22 Posts
FC coil on leading, Blaster 2 coil on trailing. Mount them both vertically to the shock tower.
Old 02-09-14, 10:48 PM
  #15  
Senior Member
iTrader: (8)
 
Smokeyfb33's Avatar
 
Join Date: May 2013
Location: 94086
Posts: 280
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by placd1
Fearfulear69 exactly what problem are you experiencing? On another note, I guess I'm tempting fate but I have the regular Blaster 2 coils (red) and have mounted them horizontally in the stock location with no ill effects yet. Spoke to a couple other people and they've had their Blaster coils similarly mounted in the stock location for years and they haven't failed yet. Hoping the odds are on my side here!
They will leak oil and over heat. The top is not made as a leak proof seal.

Switch to 8222 coils from MSD.
Old 02-10-14, 08:39 AM
  #16  
Waffles - hmmm good

iTrader: (1)
 
t_g_farrell's Avatar
 
Join Date: Jul 2004
Location: Lake Wylie, N.C.
Posts: 8,783
Received 282 Likes on 232 Posts
Use solid state coils like Ford TFI or GM E type coils. Better spark, more heat resistsance and
you can mount them anyway you want.
Old 02-11-14, 12:37 AM
  #17  
Your brain on triangles..

iTrader: (4)
 
Jingkun's Avatar
 
Join Date: Dec 2010
Location: Cedar Park, Texas
Posts: 379
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Smokeyfb33
They will leak oil and over heat. The top is not made as a leak proof seal.

Switch to 8222 coils from MSD.
You referring to this 8222? http://www.msdignition.com/Products/...ster_Coil.aspx
Old 02-11-14, 08:46 AM
  #18  
Senior Member
iTrader: (8)
 
Smokeyfb33's Avatar
 
Join Date: May 2013
Location: 94086
Posts: 280
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Jingkun
Yup. Check the specs. It's about the same price as the inferior 8202 you commonly see.
Old 02-11-14, 10:24 AM
  #19  
1st-Class Engine Janitor

iTrader: (15)
 
DivinDriver's Avatar
 
Join Date: Jun 2008
Location: Chino Hills, CA
Posts: 8,376
Received 26 Likes on 24 Posts
Just ordered a pair of the MSD 8222 Blaster "High Vibration" (potted) coils off Amazon - same price, and free shipping thanks to my Prime membership. Because they are epoxy potted they can mount horizontally in the original positions.

We'll see how they work. Currently running original stock coils from 1980. They test out OK on impedance but I suspect a little extra pep in the spark might help smooth out my burble.

Stock coil primary impedance is 0.9 Ohms +/- 0.09; Blaster mfg spec is 0.7 Ohms. This will raise current draw through the ignitors by a bit (about 23%); hopefully it doesn't shorten life on my J-105's.
Old 02-11-14, 10:44 PM
  #20  
84SE-EGI helpy-helperton

 
LongDuck's Avatar
 
Join Date: Oct 2002
Location: Phoenix, AZ
Posts: 3,314
Received 359 Likes on 250 Posts
Blaster2's, Leading & Trailing, and never had any issues with spark. Never really noticed more pep or better fuel economy either, so... meh.
Old 02-12-14, 09:54 AM
  #21  
Waffles - hmmm good

iTrader: (1)
 
t_g_farrell's Avatar
 
Join Date: Jul 2004
Location: Lake Wylie, N.C.
Posts: 8,783
Received 282 Likes on 232 Posts
Originally Posted by DivinDriver
Just ordered a pair of the MSD 8222 Blaster "High Vibration" (potted) coils off Amazon - same price, and free shipping thanks to my Prime membership. Because they are epoxy potted they can mount horizontally in the original positions.

We'll see how they work. Currently running original stock coils from 1980. They test out OK on impedance but I suspect a little extra pep in the spark might help smooth out my burble.

Stock coil primary impedance is 0.9 Ohms +/- 0.09; Blaster mfg spec is 0.7 Ohms. This will raise current draw through the ignitors by a bit (about 23%); hopefully it doesn't shorten life on my J-105's.
My SA ignition burned itself out after running the 2G coils. Not sure if it was the
ignitors though because the little circuit board in the SA control box had some
scorch marks on it. The symptoms when your SA ignition fails will be it starts up cold
fine but when it gets warm it will start to miss and when it gets hot it will fail to run.
Once it cools it will work ok, lather rinse repeat until it happens so fast you can't
drive anywhere. At first you will think its something else and eventually it will strand you somewhere.

Ask me how I know.
Old 02-12-14, 10:56 AM
  #22  
Lapping = Fapping

iTrader: (13)
 
Jeff20B's Avatar
 
Join Date: Aug 2001
Location: Near Seattle
Posts: 15,725
Received 70 Likes on 64 Posts
A leading 2G coil left PercentSevenC stranded. It killed the J-109 he was using. Yes we did include the ballast resistor but it still was too much for the stock ignitor.

His is an '83 that was set up for 2GCDFIS. I was there and "edited" his car to use trailing, which was still stock, going to the leading plugs and I think we rotated the dizzy for closer to leading timing. It got him home.

After that experience we had to make a decision. Either get a GM HEI which we know will handle more amps before going into current limit mode, or swap to true DLIDFIS. We chose DLIDFIS and the difference was actually noticeable. Shows how poor of a setup 2GCDFIS really is. I know it sounds like a broken record at this point, but it's true.

So now I'm curious about something LongDuck said. Just swapping coils but leaving them sparking through the cap and rotor didn't make any difference on his thoroughly stock and I'm guessing very nice GSL-SE. He seems to be the GSL-SE go-to guy around here. And as such most likely has a stock well kept engine bay. This means it has stock ignition.

I see a bunch of words and letters in his sig but nothing that jumps out at me suggesting a direct fire ignition upgrade. I'm thinking his car would benefit from a direct fire upgrade with "wasted spark" because even Mazda went to it with the FC. If it's good enough for Mazda, it's good enough for us 1st gen guys, if we decide to go for it. I just don't know if Mr. Dong would be willing to "fix" something that isn't broken. It's not really a fix, but rather a nice upgrade that does actually do something. It's noticeble, at least on all the carbed engines I've ever done.
Old 02-12-14, 11:44 AM
  #23  
Waffles - hmmm good

iTrader: (1)
 
t_g_farrell's Avatar
 
Join Date: Jul 2004
Location: Lake Wylie, N.C.
Posts: 8,783
Received 282 Likes on 232 Posts
Originally Posted by Jeff20B
A leading 2G coil left PercentSevenC stranded. It killed the J-109 he was using. Yes we did include the ballast resistor but it still was too much for the stock ignitor.

His is an '83 that was set up for 2GCDFIS. I was there and "edited" his car to use trailing, which was still stock, going to the leading plugs and I think we rotated the dizzy for closer to leading timing. It got him home.

After that experience we had to make a decision. Either get a GM HEI which we know will handle more amps before going into current limit mode, or swap to true DLIDFIS. We chose DLIDFIS and the difference was actually noticeable. Shows how poor of a setup 2GCDFIS really is. I know it sounds like a broken record at this point, but it's true.

So now I'm curious about something LongDuck said. Just swapping coils but leaving them sparking through the cap and rotor didn't make any difference on his thoroughly stock and I'm guessing very nice GSL-SE. He seems to be the GSL-SE go-to guy around here. And as such most likely has a stock well kept engine bay. This means it has stock ignition.

I see a bunch of words and letters in his sig but nothing that jumps out at me suggesting a direct fire ignition upgrade. I'm thinking his car would benefit from a direct fire upgrade with "wasted spark" because even Mazda went to it with the FC. If it's good enough for Mazda, it's good enough for us 1st gen guys, if we decide to go for it. I just don't know if Mr. Dong would be willing to "fix" something that isn't broken. It's not really a fix, but rather a nice upgrade that does actually do something. It's noticeble, at least on all the carbed engines I've ever done.
Yep any DFIS will be an improvement thats for sure.
Old 02-12-14, 02:03 PM
  #24  
'85 12a
iTrader: (10)
 
Cookboy's Avatar
 
Join Date: Jun 2012
Location: Richmond VA
Posts: 1,495
Likes: 0
Received 2 Likes on 2 Posts
The 2g coil killed my Ignitor too. HEI attempt failed, MSD 6201 seems to be working well a year later.
Old 02-12-14, 05:45 PM
  #25  
Lapping = Fapping

iTrader: (13)
 
Jeff20B's Avatar
 
Join Date: Aug 2001
Location: Near Seattle
Posts: 15,725
Received 70 Likes on 64 Posts
It killed you HEI ignitor? Wow, I never knew the 2GCDFIS was so problematic. I always thought the HEI could withstand the hungry leading coil. Was that with or without the ballast resistor?


Quick Reply: Ignition Coil Upgrade



All times are GMT -5. The time now is 11:36 PM.