Twin Plug

[F1BADUDE]

I am rebuilding a 69 2.0L for club race project and want to go twin plug. I have heard mixed things about crank fire and am looking for 12 plug distributor. Can anyone tell me where I could find one or someone who can make one for me?

Thanks,

BA

[beepbeep]

In case rules aren't hampering you, it's much easier and more reliable to go for direct-fire standalone ignition. Dual-plug distributors are very pricey items and cost as much as complete aftermarket ignition kits despite being less reliable and untunable.

[Porschephd]

I use crankfire on all the TP motors I build. Never an issue. We set the plugs at 40 thou and all is good. Direct fire is cheaper and more adjustable.

[jgparker]

To answer your question, I think Andial does this conversion. I hear the cap alone is close to 1K. I'm not sure if it can be done on a 2.0 distributor.

http://andial.com/content/911/twinplugdist.htm

Good luck,

JP

[sayah]

Has anyone tried to adapt a used Bosch DME from a BMW, lets say, to a 2.0 engine? You could modify an old flywheel, get some sensors and a DME, put 6 coil packs on the spark plusgs, a new chip, etc, etc.

Should work, no?

Thinking outside the box.

[F1BADUDE]

any recomendations on a good crankfire system?

[Wayne 962]

Lots of good questions here. First off, the BMW DME thing has been done, do a search on "BMW DME" and you will find a bunch of answers.

Secondly, I can't think of anything wrong with crankfire, except for the cost, and the fact that it looks "non-stock." Other than that, hands down, it is the way to go. The twin-distributors have lots of problems (no advance in some, expensive, non-available caps, etc.) They do look soooooo coooool though in your car. That would be the only reason for installing one in my opinion.

-Wayne

[Porschephd]

Dollar per dollar there isn't any comparison. Dual HPXs, wires and even a map sensor is still cheaper in the long run over the dated RSR stuff. Don't forget you have to have dual CDIs, dual coils etc. At the end of the day the other route is cheaper. Also don't forget that a standard dist can move 10 degrees with a worn dist gear on the crank. A direct fire is accurate within 1/4 degree at all times. We typically sell these systems at around 1550.00 to give a comparison on cost of the traditional way.

[Oldporsche]

Stephen Kasper (Porschephd) has the answer down.

I have investigated many methods but direct fire makes the most sense, if you don't have to look stock.

You might investigate megajolt-lite for another look at a direct fire or the Ford EDIS ignition.

Good luck,
David Duffield

[Grady Clay]

Remember you can still have a gutted twin plug distributor in place for show (with a bad cap) and a crank fired system hiding behind the engine.
You can even disguise the fact it is twin plug by keeping the exhaust plug connectors and wires inside the lower valve covers. Use a gutted single plug distributor and OE wires.

A little subterfuge goes a long way so long as you don’t evade the rules.

BA, Give us a rundown on the retail cost of the system you installed.

Best,
Grady

[afterburn 549]

also a twin plug cap is 600.00 dollars!! thats enough to do somthing else......think sds.com
imo

[Porschephd]

Hey David!! Long time no talk! Next time you are in KC look us up again. Things have changed a wee bit

[Porschekid962]

are you using some high dome pistons in this engine or running a really high CR??? if you arent you dont need to twin plug it and can save some money.

[emcon5]

I am partial to Rennsport's 964 conversion.



Tom