MSD 6A with Chrysler ignition and tachometer

MSD 6A with Chrysler ignition and tachometer - 01/21/14 08:49 PM

Hey gang.
Getting ready to install a MSD 6A system on my Daytona. With eventually have one of my Prestolite dual-points converted to electronic and want the performance of MSD. I will hide the box and such so there's minimal visual impact. I was curous on how people who have this system wire compliment there factory tach or is it better to get the new-style circuit board for the rear of the OEM tach? I know there's a MSD tach adaptor.. Anyone with luck hooking that up?

I will hide the MSD and adaptor boxes as well as minimizing the visual impact of the MSD system in the engine compartment.

Cheers,
Troy

Posted By: GTX MATT

Re: MSD 6A with Chrysler ignition and tachometer - 01/21/14 08:56 PM

Troy, do you know that you can just trigger the MSD with your points?

Posted By: mickm

Re: MSD 6A with Chrysler ignition and tachometer - 01/21/14 11:43 PM

your stock tach, if it is stock original, probably won't work with the MSD box. you will need an aftermarket tach that is set up for the MSD, or they make a box you put in between the MSD box and your tach.

Posted By: hemi68charger

Re: MSD 6A with Chrysler ignition and tachometer - 01/22/14 12:14 AM

Quote:

Troy, do you know that you can just trigger the MSD with your points?

Would the points hold up to the I increased voltage?

Posted By: screamindriver

Re: MSD 6A with Chrysler ignition and tachometer - 01/22/14 12:50 AM

Actually the points become just a trigger and carry no load...So they last much longer...But IMO why keep the points and have another area to deal with when the electronic conversion takes that out of the equasion....
I have the tach adapter on one vehicle and it works fine you'll need to hide it with the MSD...Biggest problem I have is the old tachs don't move as fast as a new one...If you've got a fast revving engine it'll pass the tach during the sweep if you blip the throttle in neutral...

Engine is coming back down while the tach is still on the way up/hovering...

Posted By: dogdays

Re: MSD 6A with Chrysler ignition and tachometer - 01/22/14 04:34 AM

points trigger the white wire.

R.

Posted By: ahy

Re: MSD 6A with Chrysler ignition and tachometer - 01/22/14 05:07 AM

I use the factory tach with MSD. It requires the MSD adapter. There are several adapters offered... I picked based on my application and it was the lower cost version which worked.

The factory tach... well it does move to the right when RPM increases. Beyond that not so accurate. If you think the new board will help by all means try it. I will likely add a column mounted aftermarket tach.

Posted By: hemi68charger

Re: MSD 6A with Chrysler ignition and tachometer - 01/22/14 03:25 PM

Quote:

... If you think the new board will help by all means try it. I will likely add a column mounted aftermarket tach.

That's what I was thinking. I have an extra factory tach for the Daytona that needs to be refaced. So, they made MSD friendly board I can change out into the tach and thus not have to wire in an adaptor? If so, where does one get these boards? Charger Specialties?

Posted By: GY3

Re: MSD 6A with Chrysler ignition and tachometer - 01/22/14 05:43 PM

I have installed them on a couple of my cars.

No advice on the tach as I don't use one but I hide the box under the battery tray and use a factory Mopar electronic distributor to trigger it.

Mount it where you can pull the rev limiter out easily and the wiring is easily hidden. It gets plenty of airflow as well.

Posted By: GTX MATT

Re: MSD 6A with Chrysler ignition and tachometer - 01/22/14 07:25 PM

Quote:

Quote:

Troy, do you know that you can just trigger the MSD with your points?

Would the points hold up to the I increased voltage?

Hey Troy, the points won't actually carry the energy of the ignition system like stock points, they are just set up to trigger the box like a reluctor wheel/magnetic pickup does. I suppose some voltage is applied and it triggers when it grounds. I know that the point gap doesn't even matter with it as long as they open and close. You'd just want a set of points that won't bounce at your max RPM.

Posted By: mickm

Re: MSD 6A with Chrysler ignition and tachometer - 01/22/14 09:06 PM

Quote:

Quote:

... If you think the new board will help by all means try it. I will likely add a column mounted aftermarket tach.

That's what I was thinking. I have an extra factory tach for the Daytona that needs to be refaced. So, they made MSD friendly board I can change out into the tach and thus not have to wire in an adaptor? If so, where does one get these boards? Charger Specialties?

i have a repo tic-toc-tac from charger specialties. can't recommend them enough.

Posted By: Lee446

Re: MSD 6A with Chrysler ignition and tachometer - 01/24/14 10:08 PM

I'm pretty sure that it was Redline Instruments that offered a service for E-body Tachs that looked stock on the face, but used VDO electronics on the backside. This would give you an accurate tach that could keep up. I would call them and see if they offer the same service for B-bodies.

Posted By: hemi68charger

Re: MSD 6A with Chrysler ignition and tachometer - 01/24/14 10:27 PM

Quote:

I'm pretty sure that it was Redline Instruments that offered a service for E-body Tachs that looked stock on the face, but used VDO electronics on the backside. This would give you an accurate tach that could keep up. I would call them and see if they offer the same service for B-bodies.

Thanks Lee... I've done much business with Redline with their amp-2-volt conversion service. I'll explore the tach's..

I have ordered the 6425 box along with the 8222 black coil and 8920 tach adaptor. I spoke to the tech support about various scenarios of distributors. Being that the points are no more than a trigger and really don't put much strain on the contacts, I may use my Prestolite dual-point first using the white wire from the MSD box... This will give me the OEM look I'm wanting......

Cheers from a fellow Houstonian...