1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

MSD 6btm and Turbo Applications.

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Old Jun 3, 2003 | 05:29 PM
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MSD 6btm and Turbo Applications.

Okay, i know the benefits of direct fire, and am running it on my car now. What i want to know now is, when i get the 13bt, i need something to retard the timing when boost comes in....

since i'll only be using a Haltech f9a, and not a whole engine computer, i need something like the MSD 6btm, that retards timing with vacuum.

how do you retard leading and trailing? does the MSD do that?... i've always been confused as to how the MSD works on a rotary.

any OTHER ways to do this without a 12at dizzy or something of that nature?
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Old Jun 3, 2003 | 07:49 PM
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From: 3OH5
2 MSD6BTM's.
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Old Jun 3, 2003 | 07:55 PM
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Just use it for the leading.
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Old Jun 3, 2003 | 08:27 PM
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Originally posted by Directfreak
2 MSD6BTM's.
goddamnit... those things aint cheap!!... jegs wants $336 for one.

ugh

rxseven: what happens when it dosent retard the trailing then? Or does that not make a difference?
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Old Jun 3, 2003 | 09:08 PM
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From: 3OH5
Going fast ain't cheap. (at least not cheap with a rotary)

If you don't retard the trailing as well, you may as well have no retard. It could still pop your engine.

Don't worry about them for now, just use you stock dizzy, and lock it at maximum advance setting.

You can always get fancy later.
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Old Jun 3, 2003 | 09:12 PM
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isnt that gonna bog hardcore at low rpms? or is it not gonna be that bad?
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