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> 914: Twin plug kit for $850 article
JeffBowlsby
post Aug 20 2006, 11:46 PM
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Also found in my new stash of old papers


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Mueller
post Aug 21 2006, 01:24 AM
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too bad no pictures of the modifications....

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Jake Raby
post Aug 21 2006, 05:06 AM
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This is an off the shelf offering...

(IMG:http://www.aircooledtechnology.com/galleries/msheads/slides/Arnett%20manx%20057.jpg)

I also have developed a twin plug dizzy for guys that don't care about direct fire, but for those that do I also have carbureted and EFI versions of DIS for the twin plug arrangement.

The benefits are HUGE, all my 105+mm bored engines get the trick and I have several Turbo power plants also running it, those that run over 14 PSI boost REALLY need it!

Cool article, I read it about 10 years ago.. My first experience with twin plugs was in 2,000 and every since then I have been working toward making them standard on all my engines. It looks like in 2007 this wil be a reality.
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URY914
post Aug 21 2006, 06:22 AM
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I've got a copy of that in my files. I can fax to someone if they need a clean copy.

Paul
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thomasotten
post Aug 21 2006, 08:17 AM
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Does that make it hard to change the plugs?
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Jake Raby
post Aug 21 2006, 08:31 AM
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QUOTE(thomasotten @ Aug 21 2006, 07:17 AM) *

Does that make it hard to change the plugs?


I include a special spanner for the lower plugs, the position for these plugs to be fit was an extensive process that sacrificed about a doen heads to make the fixturing for!

we use 10mm spark plugs from a Ducati engine, they have the proper heat range and are very small, not to mention very long living..
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Aaron Cox
post Aug 21 2006, 10:18 AM
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nice.....
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bjorn jacobson
post Aug 21 2006, 03:02 PM
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Good stuff! Thanks for posting the article. I'll have to reread the Excellence article with the twin plug 912.
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Brian Mifsud
post Aug 21 2006, 03:33 PM
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Twin plug heads for Moto Guzzis (hemi air cooled) usa a little iddy bitty chainsaw sparkplug to keep the hole in the head small....
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turboman808
post Aug 21 2006, 03:46 PM
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SO I could possibly twin plug my 2.7 and then turbo it. (IMG:style_emoticons/default/idea.gif)

That would either explode or be one hell of a scary ass ride!!!!
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Air_Cooled_Nut
post Aug 21 2006, 04:52 PM
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QUOTE(Jake Raby @ Aug 21 2006, 04:06 AM) *

This is an off the shelf offering...

I also have developed a twin plug dizzy for guys that don't care about direct fire, but for those that do I also have carbureted and EFI versions of DIS for the twin plug arrangement.

The benefits are HUGE, all my 105+mm bored engines get the trick and I have several Turbo power plants also running it, those that run over 14 PSI boost REALLY need it!

Cool article, I read it about 10 years ago.. My first experience with twin plugs was in 2,000 and every since then I have been working toward making them standard on all my engines. It looks like in 2007 this wil be a reality.

Really damn cool, Jake. Nice work (IMG:style_emoticons/default/beer.gif)
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Jake Raby
post Aug 21 2006, 05:19 PM
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Thanks.. I am now working with a 2.7L EFI/intercooled/Turbo /Twin plugged/ Roller cammed beast that should make 600 usable ponies below 6,000 RPM..

It belongs in "Herbie ExtremeII" and is being taken very seriously....You'll be hearing a lot more about this one-
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jim_hoyland
post Aug 21 2006, 09:15 PM
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Out of curiousity: Are there any twin plug 4's around today ? Saw a twin plug 912 at their monthly gathering in Seal Beach recently.
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Jake Raby
post Aug 21 2006, 09:36 PM
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I have done three in the past 6 months and have 6 more in the works.

Here is the results of one- it was less than 2.4L

(IMG:http://www.aircooledtechnology.com/mightyspyder_dyno.jpg)
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