Dual Plug Options

[ducatithunder]

Has anyone used the Jarvis dual plug distributor here? Im looking to make my dual plug purchase in the next week or so. I dont have the $$ for the Supertec unit right now. Jarvis seems to be the next best option. JB racing is to modern looking for my engine build or my taste. I want the single dual plug cap. What have you guys used to accomplish this? Thanks.

[onboost]

Have you checked-out Burn-Bros.. I actually think that's who makes the Supertec unit.

[ducatithunder]

Yep. I talked to Henry when I was out in CA a few weeks ago. Aaron is the one who builds it for them. $2300 plus providing the SC distributor. I might still end up going that route but $2300 plus is pretty heafty price tag for a distributor compared to the others. The Jarvis comes in at $1900 or so.

[Dr K]

Not a lot of difference between $1900 and $2300 if the Supertec is better - you won't notice $400 after a year...

[ducatithunder]

Yeah, I know. I had a lead on a NIB Supertec dizzy but I got home to late and it was sold. Oh well. I have a feeling like the rest of this build Im going to end up spending more money, lol.

[ducatithunder]

Its about $800 more with the core SC dizzy added.

[Intubator]

Might want to wait and see what pops up at Hershey... Four weeks away!

[smdubovsky]

If you get one of these, I would *REALLY* appreciate a close look at it;) I'm planning something similar on the /6.

[BobNovas]

$2300 just isn't reasonable for a distributor. Can't you do something cheaper with direct ignition?

[Lupin..the..3rd]

$2300 just isn't reasonable for a distributor. Can't you do something cheaper with direct ignition?

Agreed. How about a crank-fire based ignition? Skip the distributor altogether. Crank-fire is supposed to give more precise spark timing too.

Clewett makes one. I'm sure there are others too. http://www.autoatlanta.com/Porsche-Xdi-Dual-plug-Crank-Fire-Ignition-System-Parts-PN-R900611.html

[onboost]

I think what he's after, as well as performance, is the old skool look of the twin plug dizzy. With an RS or RSR build, the twin plug dizzy just fits the look perfectly.. though yes, that is a lot of coin!

So, this dizz from Supertec being the same as that Aaron builds, is it any cheaper from him?

I've got an engine coming together (in planning) down the road that will have a lot of the same old skool look but w/stand alone EFI & throttle boddies.. The hole car is a mix of old skool, later tech, and WTF? It should be fun, and great to finally get back to the track!

[ducatithunder]

Yes I could go direct ignition like the electromotive set up that is distributor less. It just doesn't fit my build specification. Paul hit the nail on the head. Im trying to do my best to give it the vintage race look. The car build is way more an rsr clone then a wide body backdate. There are a bunch of pros with the electromotive set up ... I could have kept the 11.3-1 CR with the carbs and still had knock sensing. I had to drop a point to 10.5-1 to run 93 without having to worry about detonation. I have seen a bunch of guys go that route but I want that big awesome distributor looking you square in the face when you pop the hood.

Yes, $2300+ is alot of scratch for small part in the whole realm of the build. I couldn't imagine buying a real deal rsr distributor for easily 4x's that to then rebuild it. I was more curious what other in this group have done in the past. If some one had robbed a bank and bought the Supertec unit and just not happy with it when it arrived or got the cheaper Jarvis and it fit the bill.

Stephen... If you end up with one in my hands I promise you some "alone time" with it, lol.

[smdubovsky]

Knock sensing/etc is a function of the ECU not the spark generation/distribution. Im not a fan of electromotives setup (its really outdated compared to modern aftermarket ecus.) Not to mention the difficulty of detecting knock in a noisy air cooled engine - look how much trouble porsche had doing it. Though w/ carbs you're limited on how much an ECU can control spark (since there isn't one;))

JBRacing (http://www.jbracing.com/eng_porsche.php) supposedly makes a twin plug dizzy w/ ext trigger if you have an ecu. 'Only' $1200. Probably a wash if you have to add all the other stuff just to generate spark. But would be cheaper in a EFI setup.

[ducatithunder]

Thanks Stephen. That's what I meant with the knock sensing. I have no ecu so no knock sensing. The Electromotive set up can be used with an aftermarket ecu to control knock by cutting out the specific coil. A buddy out on the west coast has a 993 Vram engine with PMO 50s and the coil pack set up. He is still running the 11.3-1 CR with the knock sensing still active in his ST. Apparently the car runs like a bat outta hell. To much work for me. I want the simple set up.

[ducatithunder]

So I talked to Aaron today. $1780 plus core. He could provide one for $350. Its getting cheaper, lol.

[ducatithunder]

Its official. I will be running the Supertec/Aaron B. dual plug distributor. Should have it in a few days.