Twin Spark Offset ?

Give input on tuning as well as any tips and tricks you may have. Also feel free to share base mapping files for various engine types.
69alfa
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Twin Spark Offset ?

Post by 69alfa »

Does anyone know why you would want the sparks to fire offset in a twin spark motor ?

Thanks
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ignitionautosport
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Re: Twin Spark Offset ?

Post by ignitionautosport »

Can help light load and idle, and more ideally for rotary engine setups with leading and trailing spark plugs ;)
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stevieturbo
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Re: Twin Spark Offset ?

Post by stevieturbo »

As above, the offset is aimed at rotary engines. Not piston engines.
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ignitionautosport
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Re: Twin Spark Offset ?

Post by ignitionautosport »

Same principles on a piston engine too, if you happen to have one with 2 spark plugs per cylinder - like a motorbike engine being most likely to come across.
| '94 GSR Lancer | '96 Toyota Carib 20V | '83 Toyota Starlet | www.ignitionautosport.co.nz |
welshpug
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Re: Twin Spark Offset ?

Post by welshpug »

or an alfa :)
VR6Turbo
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Re: Twin Spark Offset ?

Post by VR6Turbo »

or a 911 :D
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ignitionautosport
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Re: Twin Spark Offset ?

Post by ignitionautosport »

:D
| '94 GSR Lancer | '96 Toyota Carib 20V | '83 Toyota Starlet | www.ignitionautosport.co.nz |
stevieturbo
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Re: Twin Spark Offset ?

Post by stevieturbo »

But do any of the above actually fire their sparks at different times ? And is there any benefit from doing so ?
69alfa
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Re: Twin Spark Offset ?

Post by 69alfa »

Oh ya I guess I should have said I have my DTA on a 2 liter Twin Spark Alfa motor. The motor is a 1986 and the Car is a 1969 spider.

I rebuilt the motor last winter and got 171.6 hp at the rear wheels That should be 200hp + at the flywheel . The motor made about 150 hp stock .

I was just wondering if I could get any free hp by using the twin spark offset.

Did I just say free and hp in the same sentence :lol:
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mefmotorsport
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Re: Twin Spark Offset ?

Post by mefmotorsport »

Please note: By the term "Twin spark" DTA means "wasted spark" not twin spark plugs like in an Alfa.

Martin
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