Ignition Thoughts/Ideas/Recommendations

[My5ABaby]

So...

Budget: LS1 or LS2
Midrange: 034
$$$: CDI

?

Originally Posted by RICE RACING

Though it can be painful, especially if you go full anal like I did

Fixed.

[RICE RACING]

You know when you petrol foul a plug, the car will misfire is bad enough at light cruise, your EGT will go up and it mostly happens on the trailing spark plug as the fuel easily gets trapped in behind the blind plug hole.

it's a catch 22 you run the right heat range for full power and if you cruise it too much or have not enough load you will foul a plug, this is mostly the reason the CD was instituted @ mazda for competition engines, anyone running a Peripheral Port will tell you that who has lived with one as a daily (I did for about 7 years) but back then was ghetto spec and could not afford SFA let alone a don mega CD set up.

On a lean fuel setting 15:1 or weaker you will see the CD will fire better and more consistently compared to Inductive, all round I say my experience is its a better system of ignition, but again like all good things it costs ca$h.

[TitaniumTT]

Originally Posted by RICE RACING

Power is just one side.

The others are (and these are tangible effects) is firing of the plug when it is fouled (allows you to use racing heat range at all times), Ability to fire all kinds of mixtures (heavy fuel and lean fuel). Better fuel economy (I have noticed this on CD Ignition).

Just some more things to think about. Though it can be expensive, especially if you go full anal like I did

Soooooo, what are you saying?

Originally Posted by My5ABaby

So...

Budget: LS1 or LS2
Midrange: 034
$$$: CDI

Budget = stock. LS1 coils are crap.. I wet fouled one after 15 minutes of idling after a rebuild. Haven't had a chance to test the LS2's yet. Don't think they'll compare to the QuickSilver coils though.

Just to clarify, the "034" coils aren't 034 coils. They're QuickSilver coils. QuickSilver being a division of Mercury Marine. The coils come off of their 150hp+ OptiMax outboards.. iirc....

Originally Posted by RICE RACING

You know when you petrol foul a plug, the car will misfire is bad enough at light cruise, your EGT will go up and it mostly happens on the trailing spark plug as the fuel easily gets trapped in behind the blind plug hole.

it's a catch 22 you run the right heat range for full power and if you cruise it too much or have not enough load you will foul a plug, this is mostly the reason the CD was instituted @ mazda for competition engines, anyone running a Peripheral Port will tell you that who has lived with one as a daily (I did for about 7 years) but back then was ghetto spec and could not afford SFA let alone a don mega CD set up.

On a lean fuel setting 15:1 or weaker you will see the CD will fire better and more consistently compared to Inductive, all round I say my experience is its a better system of ignition, but again like all good things it costs ca$h.

Good info here...