20B Ignition setup...
#1
20B Ignition setup...
I have a Haltech E6K to control the fuel and sparc. I'm going to be running 0 degrees split timing for the time being... my idea is to switch to the E11 when it is released (allegedly, it can do split on the 3 rotor).
Here's my question... what do I need to buy to get the rest of the ignition going? I have the stock set of T2 coils sitting in my garage... should I just get another leading and trailing and bolt them in as well? or should I get some MSD ignitors or something?
Someone with any insight, please post. I"m ready to move on this like now!!!!
Thanks,
Nick
Here's my question... what do I need to buy to get the rest of the ignition going? I have the stock set of T2 coils sitting in my garage... should I just get another leading and trailing and bolt them in as well? or should I get some MSD ignitors or something?
Someone with any insight, please post. I"m ready to move on this like now!!!!
Thanks,
Nick
#2
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From: https://www2.mazda.com/en/100th/
i think you can use 3 sets of leading coils fc or fd. with the fd you need ignitors. you can use 6 ignitors and 6 coils, or you can use the stock cosmo coil/ignitor setup. the jc cosmo stuff is crazy money though.
i was looking myself and didn't really find any quick answers
mike
i was looking myself and didn't really find any quick answers
mike
#3
The stock cosmo setup is out of the question... I'm not looking for the cheap way out, but the best way out.... but that isn't saying that cost is NO concern at all...
Should I just head to the junkyard and get another set of T2 ignition? If this will work, thats what I'll do... I really don't want to drop several bills on a bunch of MSD boxes...
anyone have any ideas?
Should I just head to the junkyard and get another set of T2 ignition? If this will work, thats what I'll do... I really don't want to drop several bills on a bunch of MSD boxes...
anyone have any ideas?
#6
Originally posted by Kurgan
The stock cosmo setup is out of the question... I'm not looking for the cheap way out, but the best way out.... but that isn't saying that cost is NO concern at all...
The stock cosmo setup is out of the question... I'm not looking for the cheap way out, but the best way out.... but that isn't saying that cost is NO concern at all...
Originally posted by Jeff20B
I'd like a 20B ignition that has two Leading sparks firing 180º apart on all three rotors. Don't forget the Trailing firing 15º after each initial Leading spark.
I'd like a 20B ignition that has two Leading sparks firing 180º apart on all three rotors. Don't forget the Trailing firing 15º after each initial Leading spark.
#7
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From: https://www2.mazda.com/en/100th/
i live in califonia, but the 20b even with all the stock stuff fails the visual, you would have to get an exemption from the state inspector, plus from there you would actually have to make it pass the sniffer.
mike
mike
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#9
Originally posted by Evil Aviator
Many 20B-powered cars on the racetrack use the stock Cosmo coil packs along with a Motec. This is definitely NOT the cheap way out.
Many 20B-powered cars on the racetrack use the stock Cosmo coil packs along with a Motec. This is definitely NOT the cheap way out.
Anyhow, I don't have the cosmo coils... and I don't want to run a distributor... what are my options?
#10
Originally posted by Kurgan
Anyhow, I don't have the cosmo coils... and I don't want to run a distributor... what are my options?
Anyhow, I don't have the cosmo coils... and I don't want to run a distributor... what are my options?
#11
Originally posted by Kurgan
my brother's uncle said that you could get the 20b to run off of a Chevy 454 distributor and a toothpick." You know what I mean? Probably not
my brother's uncle said that you could get the 20b to run off of a Chevy 454 distributor and a toothpick." You know what I mean? Probably not
#15
They change the reluctor wheel from a 4 point contact to a 6 point contact. They make a special distrubutor cap. Evidentally the stock ignitors are not strong enough to fire the block, but they will work as triggers to fire a CDI ign of your choice. I have heard this is a $600 option to have this done to the stock 81-85 ign. But I have not yet talked with someone out there at RB or someone who has done it themselves.
#16
Not strong enough to fire the block? Which block? What are you talking about? (what is your evidence?)
As I understand it, the RB kit uses the stock two pickups AND ignitors AND coils and fires them through a cap and a modified stock rotor. Everything fires a little more often at any given RPM than on a 2 rotor engine, and if you're using an aftermarket tach, it needs to be set to 6cyl mode.
As I understand it, the RB kit uses the stock two pickups AND ignitors AND coils and fires them through a cap and a modified stock rotor. Everything fires a little more often at any given RPM than on a 2 rotor engine, and if you're using an aftermarket tach, it needs to be set to 6cyl mode.
#17
I was talking about the motor.
I am just conveying what Racing Beat says in their own catalog. They use the magnetic pulse pickup in the dizzy to trigger a remote CDI. They claim the stock ignitiers are inadequate to drive coils directly in 20B application and are susceptible to misfire if used with a CDI.
Source: pg.43 of the 2000 RB catalog
I am just conveying what Racing Beat says in their own catalog. They use the magnetic pulse pickup in the dizzy to trigger a remote CDI. They claim the stock ignitiers are inadequate to drive coils directly in 20B application and are susceptible to misfire if used with a CDI.
Source: pg.43 of the 2000 RB catalog
#19
Oh ok guru. When you mentioned 'block' I thought you were refering to some sort of spark distribution device (yet you also mentioned the RB dizzy kit so I was curious).
With my experience using stock ignitors, I'd say they could probably be used on a 20B without problems (fired through a dizzy cap and rotor, like the RB kit). Isn't a 20B's RPM limit something like 8k RPM or whatever? Well, if a 2 rotor engine can run up past 10k without missing with the stock ignition, 7k RPM on a 20B would be no problem. I also assume 8k would be just fine as well.
Sounds to me like RB knows you spent a decent sum on the 20B itself, so might as well milk yah for everything else.
With my experience using stock ignitors, I'd say they could probably be used on a 20B without problems (fired through a dizzy cap and rotor, like the RB kit). Isn't a 20B's RPM limit something like 8k RPM or whatever? Well, if a 2 rotor engine can run up past 10k without missing with the stock ignition, 7k RPM on a 20B would be no problem. I also assume 8k would be just fine as well.
Sounds to me like RB knows you spent a decent sum on the 20B itself, so might as well milk yah for everything else.
#20
Originally posted by Jeff20B
I'd like a 20B ignition that has two Leading sparks firing 180º apart on all three rotors. Don't forget the Trailing firing 15º after each initial Leading spark.
I'd like a 20B ignition that has two Leading sparks firing 180º apart on all three rotors. Don't forget the Trailing firing 15º after each initial Leading spark.
PK
#21
A crazy idea!
What if you were to fire the trailing coil with some type of timing retard box?
20B's fire at 120 deg's apart(non wasted spark) so that requires the use of 3 channels or igniters each to fire the leading and the trailing making it a total of 6 individual igniters, that's if you want to run split timing. What if you were to use three individual MSD timing retard boxes parallel with the leading igniters to fire each trailing igniters! Or better yet instead of 6 igniters what about two MSD DIS 6's ignition boxes one for leading and the other for leading. They both got 3 individual channels!
Anyone think it will work?
crispeed
87TII
9.20@150mph
20B's fire at 120 deg's apart(non wasted spark) so that requires the use of 3 channels or igniters each to fire the leading and the trailing making it a total of 6 individual igniters, that's if you want to run split timing. What if you were to use three individual MSD timing retard boxes parallel with the leading igniters to fire each trailing igniters! Or better yet instead of 6 igniters what about two MSD DIS 6's ignition boxes one for leading and the other for leading. They both got 3 individual channels!
Anyone think it will work?
crispeed
87TII
9.20@150mph
Last edited by crispeed; 02-20-02 at 03:55 AM.
#23
Originally posted by 20B_FC
The 3 rotors are spaced 120degs.
The 3 rotors are spaced 120degs.
Guru, it took me a while to figure it out myself. But actually building it is whole other animal (when you don't have access to fabrication facilities). Let's just say that my 20B will run like my REPU does. That's all I can tell you because I haven't built it yet. Either that or a different more costly setup that will still run the same way, but might be easier to set up. Both of these setups won't need the RB dizzy kit (no firing through the cap and rotor for me!).
#24
MSD does make a multi channel retard box. You can set it by RPM or by boost. I was thinking of using this and a pair of dis-4's. but after hearing that the AEM can do a 3 rotor w/ split timing, i'll be going that route..
#25
Re: A crazy idea!
Originally posted by crispeed
What if you were to fire the trailing coil with some type of timing retard box?
20B's fire at 120 deg's apart(non wasted spark) so that requires the use of 3 channels or igniters each to fire the leading and the trailing making it a total of 6 individual igniters, that's if you want to run split timing. What if you were to use three individual MSD timing retard boxes parallel with the leading igniters to fire each trailing igniters! Or better yet instead of 6 igniters what about two MSD DIS 6's ignition boxes one for leading and the other for leading. They both got 3 individual channels!
Anyone think it will work?
crispeed
87TII
9.20@150mph
What if you were to fire the trailing coil with some type of timing retard box?
20B's fire at 120 deg's apart(non wasted spark) so that requires the use of 3 channels or igniters each to fire the leading and the trailing making it a total of 6 individual igniters, that's if you want to run split timing. What if you were to use three individual MSD timing retard boxes parallel with the leading igniters to fire each trailing igniters! Or better yet instead of 6 igniters what about two MSD DIS 6's ignition boxes one for leading and the other for leading. They both got 3 individual channels!
Anyone think it will work?
crispeed
87TII
9.20@150mph
"MSD 6BTM, PN 6462
Supercharged or turbo engines will benefit from the 6BTM in more ways than one. Not only do the full energy sparks help burn the fuel mixture, it allows the driver to retard the ignition timing based on the amount of boost being produced by the supercharger. The timing is adjusted from a dash
mounted **** and can be retarded 1 - 3° per pound of boost with a maximum of 15°. There is also a built-in adjustable rev control to protect the engine from over-rev damage.
MSD DIS-4, PN 6215 (4 Channel Ignition)
Maximize your vehicle’s distributorless ignition system (DIS) with MSD’s powerful new ignition controls; the MSD DIS-2 and DIS-4. These Ignition Controls feature Multi-Channel capability, and can deliver up to 480 volts to the primary side of most DIS type dual output coils. With its two channels, the MSD Digital DIS-2 is designed for use on all 4-cylinder applications using 2 coils, while the DIS-4 can be used on all 6 and 8-cylinder engines with three or four coils. "
Last edited by waynespeed; 02-20-02 at 11:58 PM.