Dyna + timing plate?

[wickedSS]

I have an adjustable timing plate set at +4 and a dyna programmable ignition, am I going to run into problems?

 

Thanks

[boonman]

If yo program the Dyna with advance, yes, you will run into problems if you don't run higher octane fuel.

[Rare Scottish Tree Badger]

I have an adjustable timing plate set at +4 and a dyna programmable ignition, am I going to run into problems?

 

 

363089[/snapback]

Curve 4 is the stock curve which doesn't alter timing at all. The other 3 curves have a maximum of 3 degrees advance at various stages in their curves. Curve 3 hits 3 degree advance @ 5,500rpm and then follows the stock curve, staying 3 degree advance all the way to the limit. And curves 1 and 2 only reach 3 degree advance @ 10,000rpm. ... You should have got a graph with your Dyna.

 

With my mods, I'm going to add 2 degrees of advance over the Dyna. ... You'll have a maximum advance of 7 degrees if you leave your advance @ 4 degrees. Is 7 degrees ok with your mods. ... I've often read about 7 or even 8 degrees of advance being ok. But you're on the line here and your mods will decide what's safe.

 

Rare.

 

Rare.

[Ducman]

RSTB had some good info for you. +4 with the Dyna and your mods would probably be ok. I'd just be sure that you have the necessary octane to support your compression and timing. If you were close to the limit on octane with +4 on the stock ignition before the extra +3 and stronger spark could put you into detonation trouble now.