B230 ... Single coil vs coil-per-spark?

[Forg]

Looks like I may have to get new engine management, and I'm wondering whether there's any real advantage to getting individual coils? I've already got a Bosch ignition module & ME717 coil, being distributed via a dizzy ... but the cost of individual coils doesn't scare me as long as there'd be a real advantage of some description. I kind of think there wouldn't be, as it's not setup to rev higher than normal & I'm not planning in running ignition timing at the ragged edge (no E85 for me, not available widely enough as yet).

Apart from a coolness factor, is it worth doing? Or just use the ish I've already got?

 

[Janspeed]

- elimination of 2 mechanical wear items (dizzy + rotor)
- strong spark in each cilinder, specially at high revs.
If you have the choice COP is the better one.

 

[VQ]

You've driven YLD, the answer is obvious!

 

[Forg]

Yeah, see, I don't even know which option YLD is using ... and also don't know if his bigger jurbo (which won't fit in my car unless I replace manifold + downpipe + top of exhaust) and B230 bottom-end are bigger issues anyhoo.

Coil-on-plug ... literally? Or leads from somewhere less heaty? And what to replace the dizzy cap with?

 

[Dauntless]

 

[Janspeed]

Or leads from somewhere less heaty? And what to replace the dizzy cap with?

remove the dizzy all together and plug the hole. I believe Volvo can supply those OEM. Otherwise aftermarket will.

 

[Forg]

How do you synch the CAS signal without the dizzy?

 

[Janspeed]

How do you synch the CAS signal without the dizzy?

you want to use the dizzy as a cam trigger?
some B230's used a dizzy with a hall-pick-up in it. Maybe you can use that?

 

[leslie_s]

How do you synch the CAS signal without the dizzy?

aftermarket sensors and wheels mounted on the front of the crankshaft with a spacer and a mount for the sensor you'll be making yourself....or an lh 2.4 flywheel and crank position sensor...which will require you to drill a hole in your bellhousing if you dont have lh2.4....

 

[WillettRun?]

CAS has 2 pickups in it, crank and cam. at least with joshyfab wheel 24tooth and 1sync wheel

 

[gross polluter]

I've done it two ways.

First method I've used involved welding a tooth to my cam gear and mounting a sensor to the valve cover. The stock 2.2 dizzy acted as the crank trigger:
http://forums.turbobricks.com/showpost.php?p=3033607&postcount=66

Second method involved an adapter to mount a DSM CAS with a hi res disk in place of the stock dizzy, much like the Yoshifab piece:
http://forums.turbobricks.com/showpost.php?p=3280027&postcount=102

The end result was being able to run sequential fuel and spark. In my application I used LM7 coils mounted to the valve cover. Wires are stock GM truck wires. Cheap and effective: