C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

does anyone have a msd digital 6 ignition?

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Old Mar 10, 2004 | 05:07 PM
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Default does anyone have a msd digital 6 ignition?

i have a digital 6 im putting in my 91. i have the gm hei wiring adaptor so it will be easy to install but i have been told the you need to bypass the tach filter.if anyone has this installed can you tell me how you bypass the filter. if you had to.. thanks
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Old Mar 10, 2004 | 05:53 PM
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Default Re: does anyone have a msd digital 6 ignition? (mos90)

I have an MSD 6 in garage too, but have not installed yet. Looking forward to the answer as well. Where are you going to install it? Some do it near the overflow bottle. I have seen one mounted near or on the computer on drivers side. Good Luck on your install.
chris :flag
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Old Mar 10, 2004 | 07:04 PM
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Default Re: does anyone have a msd digital 6 ignition? (corvette1990)

i was gonna put it on the drivers side in the front of the wheel. but you need to get to the adjustments and it might be hard to get to.
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Old Mar 10, 2004 | 11:09 PM
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Default Re: does anyone have a msd digital 6 ignition? (mos90)

the tach filter is on a white wire. It is bolted to the back of the drivers side head. you simply cut out the filter and run that wire to the MSd tach out. simple as that.
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Old Mar 10, 2004 | 11:12 PM
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Default Re: does anyone have a msd digital 6 ignition? (mos90)

i was gonna put it on the drivers side in the front of the wheel. but you need to get to the adjustments and it might be hard to get to.
I mounted mine next to the battery. it is bolted to the drivers side fender well. it sits just below the battery tray. i had to remove my battery tray and clearnce it some. just cut off some of the plastic supports.

I can see and adjust the settings on it like this. but it is a little ways down in there. it is also mounted at an angle.
If the guy on ebay was not dickin me around, I would already have my digi cam and could of posted some pics.
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Old Mar 11, 2004 | 08:25 AM
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Default Re: does anyone have a msd digital 6 ignition? (bill mcdonald)

im not quiet clear on the tach filter. i see a small round thing behind the drivers head but it looks like it had 3 wire going to it. it doesnt say that you need to run the wire from the tach filter to msd. it just says bypass.
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Old Mar 11, 2004 | 01:25 PM
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Default Re: does anyone have a msd digital 6 ignition? (mos90)

The filter looks like a capacitor type thing.

I unbolted mine from the back of the head, and cut it off.
now one end of the wire runs to the dist, the othe rend goes into the wire harness/tach.

I had no luck getting mine to work through the dist. so I just ran a wire from the MSD tach out, to the wire that goes to the harness/tach.

If your will work with the dist running the tack, all you have to do is cut out the filter, and splice the wires back together.

there should only be 2 wires. one in, and one out.
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Old Mar 11, 2004 | 01:46 PM
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Mine did not have to be bypassed for some odd reason. <shrugs> It worked so I left it alone.
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Old Mar 11, 2004 | 07:07 PM
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Default Re: (scorp508)

Mine did not have to be bypassed for some odd reason. <shrugs> It worked so I left it alone.
Actually, mine worked for about 6 months, then it freaked out. so who knows.
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Old Mar 11, 2004 | 08:06 PM
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Default Re: (bill mcdonald)

i dont see anything bolted to the head but i do see a small box that looks like it is hooked into the wires off the tach.. is that is maybe? it is like 1"x 1/4".
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Old Mar 12, 2004 | 07:07 PM
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Default Re: (mos90)

A box?

mine was a cylinder. with a metal strap around it. the metal was what held it to the head.
Are white wires going into it?
the filter as I remember it, is something like 1/2" by maybe 2" long.
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Old Mar 15, 2004 | 08:41 AM
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Default Re: (bill mcdonald)

all that for nothin... i just got done with install and the tach works fine with the filter still hooked up. seems to run much smoother.
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Old Mar 15, 2004 | 02:40 PM
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Default Re: (mos90)

Glad to hear it.
If you tach goes whacky later, just cut out the filter.
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