DC350

Yo, I was wondering what kind of msn ignitions you guys have, i was cruisin the msd ignition site and looked at this type...: msd 6a, pn6200 for the occasional cruise, race 4x4 and all inbetween, sounds pretty good to me, what do you guys think

ALso, anyone feel any differences in power?

rotarygod

iTrader: (1)

I have a 6a in both my 1st and 2nd gens. works great.

RETed

6A is the plain-vanilla one - this is the one you want.&nbsp All the rest have features which you cannot really use or overpriced advertising.


-Ted

wpgrexx

jacobs rotary pro pak

RETed

The Jacobs box is a RIP.


-Ted

wpgrexx

why you say that ted? it is the only kind i have experince with. though i was thinking of getting two msds for the other coils

DC350

sweet, the plain-vanilla is the one for me

Spraintz

iTrader: (1)

anybody got a "how-to" for MSD or Crane?

jsotelo

Peep out http://www.fc3s.org/
It's under How To, Electrical. The Crane HI-6.. but I can't find it for less than $200

If this little thing can get me 3 MPG better than I have now I think it's my next mod.

kristopher_d

I'm running Win 2K Professional. It's great. I highly recomend that you go with the Professional version of any operating system (is this what you meant by ignition). The extra cost is well worth it. I'm still running the stock ignition.

MazdaRx7Racer4Life

I know im gonna get hit for sayingthis, but can anyone explain the purpose of msd ignition? Does it add hp? what does it do and how does it do it? thansk

$100T2

iTrader: (1)

I called Crane and they say NOT to use the HI-6. When I talked to the tech rep at MSD, they said to use the 6-AL. I need RETed's expertise on this one.

silverrotor

iTrader: (1)

Have used the Cranes Cams for 3 years now on the Leading Coil. Last year my car wouldn't start and I attributed It to the box. I.e disconnected the box and then vroom, started up. Sent the box back, even after warranty expired, and re-Installed the new one that was sent to me. Since than, no problems. Perhaps I got a "bad" box or something.

bingoboy

the 6AL and the 6A are basically the same box i believe, except the AL has a rev limiter that makes it cost more that you wouldnt need anyway. is there another reason to go with the 6AL that i am not aware of? and would just one MSD box work fine on the leading coil with no other ignition parts added besides efi wires? i really dont want to buy 3 msd boxes if its not gonna be much better than one, and i have good experiences with the 6A on other cars. oh and do they work ok with standard rx7 coils or what? i have used blaster coils on other cars cuz they say with certain older cars the boxes can fry your stock coils.

Ryde _Or_Die

Ya Ted whats the deal with Jacobs? I was planning on getting it eventually(it will match my blue **** under the hood ).

RETed

http://fc3s-pro.com/TECH/MODS/IGN/cdi.htm
That's the simple explanation.

The FC fires an inconsistent leading spark, especially at L2 channel.&nbsp The CDI box makes they all fire properly.&nbsp Boosted engines need all the help they can get when it comes to ignition.&nbsp A lot of stock coil rotaries show a characteristic ignition break-up at the top end on a dyno run - the CDI box pretty much eliminates that.&nbsp Idle is usually smoother with throttle response significantly increased.&nbsp It feels like a lightened flywheel.

The Jacobs is just another CDI box.&nbsp There is nothing fancy about it.&nbsp Run a Jacobs versus an MSD 6A or Crane Cams HI-6 on the dyno, and you get practically no difference.&nbsp Jacobs is too much hype.


-Ted

Ryde _Or_Die

Hmm, I looked on Jacobs site for the Rotary Pro Pak and couldn't find it. But they have it listed at rx7.com. Anyways, do you need just one for all the coils or what exactly? I hear people saying they have to buy extra coils and everything of the MSDs. What about with the rotary pro pak?

bingoboy

does it make a difference if you just run 1 msd box since it will only be firing the 2 leading plugs? basically...does having all 4 firing through a CDI make enough of a difference to justify running more than one msd box? and do the stock coils hold up ok with a CDI box installed?

Spraintz

iTrader: (1)

speaking of coils, where do you get better/upgraded replacement coils?

And, yeah, what about running 2 boxes?

scathcart

Try three. One CDI each for the two trailing coils, since they have separate ignitors, and don't fire a wastespark, and one CDI box for the ledaing coil. 2+1=3.

If you want box for the trailings, run a DIS 2 box on it, or run a DIS 4 box on all of the coils.

Its not really worth the extra CDI price for the rears. You have to be making some SERIOUS horsepower before it becomes worthwhile (its more a way to prevent detonation I believe).

This is just my understanding anyway.

bingoboy

so for the coils...stock ones? everyone keeps not answering that part :P

scathcart

Stock are actually great coils.

MSD makes an motorcycle coil you could use for the leading coil set if you NEED to upgrade, and then you could run a pair of blaster coils for the trailing.

But again, you'll see little to no gains. Stock ignition is actually very good.

Spraintz

iTrader: (1)

Oh yeah, 3.

So, are the stock coils pretty strong? Thats what I seem to hear and nobody I know has ever replaced them.

Thanks for all the info guys

RETed

You can't do this.


-Ted

BlackRx7

hows Snoqulamie pass?