BT20v Options for Dizzy (other than fw hole and relocating)

[VAs Hachi Roku]

Hello,

I want to avoid cutting my firewall and avoid relocating the dizzy to the front. I was hoping as well to be able to keep using the black top spark plug cover too. What standalone systems and other options are available that would work for my scenario.

Starting to order all the pieces for my 20v swap now, and the dizzy seems to be the most complicated portion to figure out.

Thanks

[yoshimitsuspeed]

For EMS if you are on a budget I would suggest either the AEM EMS4
http://www.matrixgarage.com/?q=store/ems-4

Or one of the variants of megasquirt.

If you have money there are some other higher end options but I am not as familiar with those.

I make a sensor bracket that works with the T3 pulley and trigger wheel and DIYautotune pickup.

https://scontent-b-ord.xx.fbcdn.net/hph ... 2137_o.jpg

I'm not exactly sure what your best option would be for wires, coil or COP in order to keep your stock plug cover but maybe some others will be able to make suggestions.

I also make a coil mount bracket for the 16 valve and I could probably make something similar for the 20v.
https://www.facebook.com/photo.php?fbid ... =3&theater

I would also be interested in making a COP bracket for the 20v so if you find something you are interested in making work let me know.

[morgan]

I have the Honda D17 coils on my 20v, fit perfect under the ST cover, not so good on my BT one though

[jondee86]

I want to avoid cutting my firewall and avoid relocating the dizzy to the front.
I was hoping as well to be able to keep using the black top spark plug cover too.

If you want to retain sequential ignition, you will need to get four small single
pole coils, and make a nice bracket to mount them on the firewall close to the
rear of the head. A set of custom plug wires and the high tension side is
solved while still using the stock plug cover. If you use compact coils and black
plug leads. the result will be near stock in appearance.

Then you will need a basic EMS capable of triggering four coils, and controlling
your VVT system. Remove and discard the high tension part of the stock
distributor, and get a nice alloy blanking off cover from one of the vendors.
The EMS will use the stock sensors in the base of the distributor for timing
input. No cutting, bending or any kind of engine modification required

Cheers... jondee86

[VAs Hachi Roku]

Jondee86,

Would this work for the small pole coils? I picked up some GZE pack and dizzy a long time ago. Cant remember if this is from a 4AGZE or from an AE101 SC though.



The cap I was looking to get from SQ


1.)
What EMS are good to look at purchasing, this is an area I know very little. I'd rather spend the money and get a better one if it makes it easier to tune the engine.

2.)
Know of any place online I could order the custom plugs that would work with the 20v, that I can cut and modify myself?

[jondee86]

The GZE coils are 2-pole coils, and you can use them, but you would
be running wasted spark rather than sequential ignition. I actually have
them on my 16V with a Subaru 2-channel igniter, and drive it using two
ignition outputs on my aftermarket EMS. It works fine.

You don't need the GZE cam angle sensor, as that is the job that the base
of the exisiting 20V distributor will be doing, and you can't use the GZE
igniter, as that only works with the GZE factory EMS. But you can get a
2-channel igniter off many different 4-cylinder Subaru or Mitsubishi cars
that use wasted spark coils.

The best EMS to get is one that you can get tuned locally by someone
who is familiar with the product. The AEM EMS-4 referred to above
seems to be quite popular, and you should ask the tuner if he would be
happy tuning one in your car. You can download the manual from the AEM
website, and I believe the price is competitive. So long as the EMS can
drive wasted spark coils either directly, or thru a 2-channel igniter, give
you sequential injection and control your VVT, it will be good enough.

A good tune (dyno tune) is the key to getting the best performance
out of your engine. Ask around to see who has a good rep as a tuner
in your area, then go and talk to that tuner.

The GZE coils have a "click-on" cap on the leads, they might even be
the same as the BT clips. If they are, and you can get the coils close to
the engine, you might only need one or two longer leads. Otherwise
Magnecor can make you custom leads if you tell them what kind of clips
and plug caps you want. Maybe even Sam-Q can help you out as he does
custom leads for his BT distributor relocation kit.

Cheers... jondee86

[VAs Hachi Roku]

What coil pack can run sequential? If so I'll start to source one out if it's better!

[jondee86]

The difference between sequential and wasted spark is not worth worrying about.
So long as the spark happens at the right time on each cylinder, the result is exactly
the same with distributor, COP or wasted spark. Most modern multicoil engines run
wasted spark... heck, guys are going to the trouble of installing COP's and then batch
firing them But if you are determined, you would most likely need to find four
single pole coils. Motorcycles might have something small enough to use.

Cheers... jondee86

[makibaka]

I make a sensor bracket that works with the T3 pulley and trigger wheel and DIYautotune pickup.

https://scontent-b-ord.xx.fbcdn.net/hph ... 2137_o.jpg

The T3 pulley and trigger wheel combo works for a 20v?

Unless something has changed, T3 said that the combination would only work if the trigger wheel is mounted on front of the wheel (custom application). That would be awesome if it does because I have the t3 pulley and trigger wheel and would love to use it on my 20v!

[yoshimitsuspeed]

I'm not clear on what you are saying.
Are they saying it won't clear the 20v timing cover if it's mounted on the back? Or something else I am missing?

[makibaka]

Gabe simply said that his trigger wheel wouldn't fit on a BT 20v, and that I would have to custom mount it on the front of the pulley. Dunno. He did say that he had a setup for a ST, but didn't elaborate what the clearance difference(s) were between a BT & ST for his set-up.

Since I already have his pulley and wheel (bought for a 16v that I ended up not using), I would totally rock your sensor mount if I could use it on my BT!

[yoshimitsuspeed]

Gabe simply said that his trigger wheel wouldn't fit on a BT 20v, and that I would have to custom mount it on the front of the pulley. Dunno. He did say that he had a setup for a ST, but didn't elaborate what the clearance difference(s) were between a BT & ST for his set-up.

Since I already have his pulley and wheel (bought for a 16v that I ended up not using), I would totally rock your sensor mount if I could use it on my BT!

Hmm, the only think I can think of is the timing cover getting in the way but I could be missing something. I wish I had a 20v mockup motor here to look at. It's hard using the one in my AW11 for stuff like this.

Since you already have the pulley and wheel you might as well check it out and see if it could be made to work.
I have some trigger wheel ideas of my own but don't have the resources to make what I want for a reasonable price right now.

[makibaka]

I hope to check the fitment soon and let you know if i could use your mount.

I have a 2 month old son that'll keep away from the garage for a few months at least though. Should've went with a ST lol