Are Coil Packs Worth while?

[pete917]

Is it worth while converting my old 911 to run coil packs rather than a dizzy? Would I see any HP gain?

Im already running MoTec so would just need the coil packs and wiring harness.

Many thanks

[Quicksilver]

The second you put the ignition parts on a distributor car they start to degrade. The coil packs will upgrade the reliability. They are particularly good when you are driving in the rain as many ignition problems flare up in the rain.

Obviously it isn't urgent but it definitely comes under the heading of a good idea. Removing the parts that are slowly degraded by use is a happy thing!

[pete917]

If I remove the distributor is there anywhere I can get a blanking plate to cap the hole that will be left behind.

[GH85Carrera]

One thing for sure, the coils on the market for a Carrera are all crap. I finally found a old used OEM original Bosch black coil. It is scary that I have to use a 30 year old coil to have something that fits right, and really truly works at the right voltages and just simply WORKS. Some coils can cause problem voltages for the DME. Others don't work new from the box.

[KTL]

Originally Posted by pete917

If I remove the distributor is there anywhere I can get a blanking plate to cap the hole that will be left behind.

Yup. Clewett makes one. This one is for the 72-up 30mm hole and he also makes one for the earlier 27mm hole.

Distributor hole plug, 1972 and later [1001-38] - $64.00 : Clewett Engineering, The complete solution for ignition & fuel injection

[dap930]

One of the benefits of using an ECU/individual coils for spark is that you can program a spark table that can change spark advance that a distributor could never accomplish. And you never run out of dwell at high RPM's. What coils are you considering?

[rsscotty]

Originally Posted by pete917

Is it worth while converting my old 911 to run coil packs rather than a dizzy? Would I see any HP gain?

Im already running MoTec so would just need the coil packs and wiring harness.

Many thanks

What Motec ECU are you currently running?

[unclebilly]

I switched to a coil pack on my 73 911 with a 2.7 engine. This was an endurance race car and in one race, we had 2 mechanical over revs and each buggered up the distributor (luckily nothing more).

I used the megajolt edis setup and the related wiring from a Ford ranger. I used a Chrysler minivan coil pack because I didn't want to modify my plug wires to the oddball Ford ends. I still had to modify them for the Chrysler coil pack.

The system was awesome. I programmed the stock ignition map and the TS map. You could select between the 2 with a switch on the dash. The RS curve was better in colder air.

You can get a trigger wheel pulley from goingsuperfast (ebay) as well as the dust hole plug and crank trigger mount. We used a Ford Focus crank trigger.

I used MAP for load sending and made up a vacuum pot that had a line running to eachof the carb barrels. It was made from 2" ABS and 1/4" NPT hose barbs.

All in, it cost under $500. I can share my maps of you choose to go this way.

[pete917]

Originally Posted by rsscotty

What Motec ECU are you currently running?

Its a MoTec M48 Pro

[pete917]

Originally Posted by KTL

Yup. Clewett makes one. This one is for the 72-up 30mm hole and he also makes one for the earlier 27mm hole.

Distributor hole plug, 1972 and later [1001-38] - $64.00 : Clewett Engineering, The complete solution for ignition & fuel injection

Thank you

[scottrx7tt]

I just converted to coil on plug using the ford EDIS ignition modules. I'd say your motec has the ability to control the coils directly, so you would not need the EDIS modules.

[BoxsterGT]

Here's one we did a few years back...........



Always ran well in conjunction with Mega Squirt EFI on a 911SC.

Len

[Otter74]

I think so - you end up with a very reliable ignition system and parts are cheap and easy to find. My car has a Megasquirt with a Ford EDIS setup just like the one in Len's photo above.

[Jack Stands]

Does the Megasquirt control the Ford EDIS? I have a Clewitt crank fired ignition in my conversion 914-6 and love it, but I'm always interested in newer technology.

[Otter74]

Originally Posted by Jack Stands

Does the Megasquirt control the Ford EDIS? I have a Clewitt crank fired ignition in my conversion 914-6 and love it, but I'm always interested in newer technology.

Yes, it is all controlled by the Megasquirt. The system was first installed with the OE ignition and the ignition was added later.

[turbobrat930]

My question is: If you have spent the money on a M48 pro, why are you not running coilpacks, COP, etc?? How are you tuning the engine? Are you only doing the fuel, and leaving the ignition to the vacuum advance on the dizzy? In order to run fuel, you would have to have at least a CPS. If so, you would have to just add the coilpacks, and maybe a cam pos sensor, and you would be able to tune the engine much better, resulting in higher Tq and HP

[turbobrat930]

Here are a couple of pictures. One is the actual coil packs that I use, and the part #.
The second is how I have them mounted in the engine compartment.

[IMG]DSCN1017 by Brad, on Flickr[/IMG]

[IMG]20140426_185415 by Brad, on Flickr[/IMG]