Flathead V8 Twin Distributor timing cover i am making

[Ol' Ron]

To get the benefit from dual plugs, the combustion chamber must be designed for it.. The only heads that come close are the Elco heads. However, the piston would have to be recessed under the plug to tak advantage of a power tip plug. In affect this would benefit fuel economy more than hP.

[Lawrie]

we have home made twin plug heads on our dragster,one plug directly over the centre of the piston.
I dont know what difference the twin plugs make but we are happy with how the engine performs,I always want to try a run with the centre set disconected but we seem always have other stuff going on between runs ( coffee etc.)
Lawrie

[FlatheadTed]

Nice product keep up the good work ,Ted

[vulture]

Very cool and thanks for making the awesome products

[donald1950]

TJW, you do some fantastic work. very nice. very creative. i would love to put one of those dual distributor setups on a car with single plug heads and convert the distributors to 4 lobe cams and just have the "WOW" factor when the hood is open and only 4 plug wires on each distributor......

[Yoyodyne]

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Originally Posted by Bored&Stroked

IMHO, This thread "got a little sideways" if reference to running a dual distributor setup. From my perspective, I think it looks cool, but I've not seen any true dyno tests to validate dual ignitions being of value (horsepower wise) on engines like ours. If somebody has done real dyno testing - controlling the variables as needed (in a manner as I posted up above) - I'd love to see them as I'd learn something. Without real dyno testing in a controlled environment, I'll continue to not expect dual plugs/ignitions to provide additional horsepower (and I'm cool with that - as I know it going in).

The only place I've heard of dual ignitions (magnetos) being required is on today's top-fuel Hemi engines. The reason is they run a solid column of liquid fuel (mostly nitro, sometimes a little alky mixed in) - and that volume of fuel needs more spark energy to burn than a single MSD ProMag can generate. This is obviously a very extreme situation - and one that is necessary to build and run 8000 horsepower engines.

FWIW Dual plugs have been proven to work in gasoline fueled Harley race engines and are SOP there. Admittedly not flatheads, but they are also slow revving dinosaurs with huge combustion chambers.

[mgudge]

Hello on the dual plug heads and dual dist. drive! I realize this post is 2016, but might these items still be available? Thanks, Mike 503-622-3639, no text. Orygun!