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-   -   Is MSD6AL suitable for a 77 Carrera 3.0? (http://forums.pelicanparts.com/porsche-911-technical-forum/821543-msd6al-suitable-77-carrera-3-0-a.html)

Bill Jennings 07-23-2014 05:42 AM

Tirwin,
Is the E-Type coil you are thinking of a MSD Blasterr SS?
I received a PM with a link to a Streetfire install using this coil which was hidden behind the panel cover.
With the street fire being black and smaller it was a very clean look.
He also stripped the shielding off of his Beru wires and put heat shrink over them I think to insulate them. Would that fix the interferance issue with these wires?

As for the will upgrading give me any benefit there are clearly two different camps on this.
I have decided to collect parts for now as my original all Bosch system is working pretty well and it does have the rpm limiting rotor. I say pretty well as I do have a idle issue and am struggling to lean the mixture down to give me better gas milage. i'm getting less than 300 miles a tank. If I trynto lean the mixture the idle goes up and hangs high sometimes.

Bob,
Thanks for the summit links.
Cheers
Bill

tirwin 07-23-2014 06:43 AM

Quote:

Originally Posted by Bill Jennings (Post 8177953)
Tirwin,
Is the E-Type coil you are thinking of a MSD Blasterr SS?

Yes, that is one MSD makes. There are others available too. I don't have any experience with them though.

Quote:

Originally Posted by Bill Jennings (Post 8177953)
I received a PM with a link to a Streetfire install using this coil which was hidden behind the panel cover.
With the street fire being black and smaller it was a very clean look.

I have been very happy with my StreetFire so far. I think it has been pointed out that the StreetFire does everything the 6AL does for this type of application. It is newer and less expensive. However, it has been pointed out that they are built in China to achieve the lower price point.

Quote:

Originally Posted by Bill Jennings (Post 8177953)
He also stripped the shielding off of his Beru wires and put heat shrink over them I think to insulate them. Would that fix the interferance issue with these wires?

I'm a little confused as to what this person was trying to achieve. Maybe there is additional info. As I understand it, the Berus are solid core wires and should not be used with the MSD. Magnecor and Clewett are braided type of wires.

Quote:

Originally Posted by Bill Jennings (Post 8177953)
As for the will upgrading give me any benefit there are clearly two different camps on this.

Indeed! :D

Quote:

Originally Posted by Bill Jennings (Post 8177953)
I have decided to collect parts for now as my original all Bosch system is working pretty well and it does have the rpm limiting rotor. I say pretty well as I do have a idle issue and am struggling to lean the mixture down to give me better gas milage. i'm getting less than 300 miles a tank. If I trynto lean the mixture the idle goes up and hangs high sometimes.

Bob,
Thanks for the summit links.
Cheers
Bill

Yes, I should've noted that you need a different rotor. I forgot to mention that. I bought 3 of the non-resistor type from NAPA.

When you say the idle goes up and hangs high when you lean the mixture, you might want to start another thread on that issue because you will get all kinds of advice and it would be best to start from the top on that one. :D

Bob Kontak 07-23-2014 08:21 AM

Quote:

Originally Posted by Bill Jennings (Post 8177953)
He also stripped the shielding off of his Beru wires and put heat shrink over them I think to insulate them. Would that fix the interferance issue with these wires?

From what I remember reading the external braiding was an attempt by Porsche to eliminate the blown air-box issue. If the secondary wires "talk" to each other ignition can be disrupted and pop goes the air-box - so the thinking went.

I don't think there are interference issues with these wires. You would know by now (radio).

I agree with Tim. Not sure why he did this.

Bill Jennings 07-23-2014 01:52 PM

Tim & Bob,

Regarding the stripping of the shielding off the Beru's I PM'd the guy back as I was confused as well. He replied that he is running solid core Beru wires with the MSD street fire and the Msd Blaster SS without problems. He stripped off the shielding to save weight. I also asked him if he was running points he said he had CDI ignition.

I'm confused about running solid core with this type of upgrade, is the different resistance an issue or is there interferance from one wire to another, I read that you have to ensure the wires are run so they don't touch each other. Crikey I've read so much the past week I might need to go back and re read some of it.
I am certain that the MSD istructions specifically say no solid core wires though they do not say why!

As for my running rich condition I did have a thread going on this a year ago, I bought pressure guages and a gunsen gas analyser and changed the decel valve posted results then work and life got in the way.

I also had a issue determining the timing marks on my pulley as it seems to be C3 specific and was unable to be sure I had the timing right. It could just be a timing issue. I also think I need a better timimg light as I cannot see the advance with mine. I know this should be in another thread!

Cheers
Bill

Bob Kontak 07-23-2014 04:00 PM

Quote:

Originally Posted by Bill Jennings (Post 8178700)
I also think I need a better timimg light as I cannot see the advance with mine. I know this should be in another thread!

I bet your mechanical advance is frozen. PM Tim or me to talk on how to check rather than opening a new thread.

tirwin 07-23-2014 05:09 PM

Quote:

Originally Posted by Bill Jennings (Post 8178700)
I'm confused about running solid core with this type of upgrade, is the different resistance an issue or is there interferance from one wire to another, I read that you have to ensure the wires are run so they don't touch each other. Crikey I've read so much the past week I might need to go back and re read some of it.
I am certain that the MSD istructions specifically say no solid core wires though they do not say why!

I do not know for sure. My best GUESS is related to what some people state regarding audio performance and high end wiring. Electricity is primarily conducted on the wire surface. In theory a braided wire would have more surface area, but it's not that simple either. You need a larger diameter braided wire versus a solid core to achieve the same conductivity. Again, that's just a guess. It would be interesting to get a real explanation from MSD or another manufacturer.

WANNA930 07-23-2014 06:05 PM

You are going to get a lot of opinions on what ignition set up to use. I have used quite a few and will say their outcome depends a lot on the engine they are being installed on.

I would never buy a used MSD as they are easily damages with misfiring and you will never know what is going on. Not worth the savings even if they are free.

I would also consider what other options the ignition offers besides the supposed addtl output. Some have quite a few options that can come in handy for triggering or limiting revs.

On a street car I have never felt a difference with an MSD box. I have gotten better idle and cleaned up AFR with other set ups so it is possible.

Also do not buy some Chinese knock off where they steal our engineering and illegally produce an exact copy with no regard to copyright laws. Plus who knows what you are getting, then people bad mouth MSD when they aren't even using one.

Bob Kontak 07-23-2014 06:07 PM

Quote:

Originally Posted by WANNA930 (Post 8179119)
Also do not buy some Chinese knock off where they steal our engineering

American or Australian engineering? Examples?


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