msd

[mike-s-car-go]

i orderd the crome msd coil and was wondering if it would work or if my impluse buying was just throwing away money. or do i need to switch over the entire system to msd in order for it to work

[pwd72s]

I'm like you...too lazy to do a search. There was a fairly long thread some time ago in which Warren stated that the MSD high vibration blaster coil (#8222) works well with the factory CD unit...of either pin count. Should be the "high vibration" coil because of it's superior internal construction allowing it to be mounted in any direction...

[pwd72s]

Right Noah...Warren posted that the MSD high vibration blaster coil with MSD part number 8222 has the same number of windings as the factory Bosch coil...if I recall, he did some testing. Warren's posts have never led me astray, so I'm a believer. I plan on buying one as an emergency spare part.

[Vipergrün]

I'd go all the way...MSD6AL, Blaster coil and 8.5mm wires, such as magnecor..

-B

[pwd72s]

Brad? With all due respect, I've yet to be convinced that the MSD is superior to the Bosch CD unit. On the other hand, it does cost less... Yes, I've heard of "multi-spark" below 3,000 revs.. A very impressive sales pitch. Looks even more impressive when a wrench shows you the spark, on a machine that is at idle. Still, I remain unconvinced of the "superior" aspects of MSD...Equal? Perhaps...worth spending extra $ for? I dunno 'bout that...

[Vipergrün]

PWD, I cannot disagree with your comments as my installation and comarison of the MSD to stock was definately not scientific Having replaced all of the components at once, I do not know where the (subjective) increase was made. However, my car starts better, idles better, and definately feels more powerful. I have to believe that increasing the spark plug gap by 50-70% and getting a stronger fuel burn has to count for something. Also, pertaining to the original poster, I would not drop in an MSD without also changing the coil and wires.... I try not to be a sucker for the Marketing types.....no Eram yet!!!!

-B

[fred cook]

A few months ago, my Bosch CDI quit working so I did some searches to help me decide which ignition unit to use. I finally decided on an MSD (6A - no rev limiter) unit and matching coil. The $$$ that I saved by not buying a rebuilt Bosch went into a set of Magnecor plug wires. The installation was easy as I put male spade connectors on the MSD wires and plugged them into the 6 connector master plug that previously connected to the Bosch CDI. I had to run one wire, the main power wire off the hot lead on the starter in order to get a direct power source from the battery (recommended). The ground wire is supposed to ground to the chassis but I went the "extra mile" and extended the ground to the engine also. I also put a fuse in the main power wire "just in case". To make room for the MSD unit, I moved the rear window defrost relay from a vertical position to a horizontal position just under the MSD. Total installation time was about 2 hours plus planning time. The car runs, starts and idles well with a slight increase in fuel mileage.

Fred Cook
'80 911SC coupe

[Randy Webb]

Where in the rear did you guys find +12 V that is always hot (for the fat red wire on the MSD)?

[RoninLB]

Originally posted by Randy Webb
Where in the rear did you guys find +12 V that is always hot (for the fat red wire on the MSD)?

starter lug is best.

[svandamme]

PWD , what MSD can do :

my 924 , aka the green bugger, has bad CIS wiring
myself, aka the lazy bugger, couldn't be bothered to fix it

it has an MSD, and was stalling on idle , because the electrics on my CIS were completely dead..

lazy ass solution : hotwire the cold start injector in the manifold, so it's on all the time...

result : car runs, at a stop light, it nearly floods , because i'm dumping fuel in it... without the MSD , my engine floods and stops running

so yeah , the MSD definately does something right
the green bugger starts way better than in the old days,
great cold and hot starts


note to self : i will fix the CIS electrics on my green bugger when the black beaut is ridin again...

[RoninLB]

Originally posted by svandamme

lazy ass solution : hotwire the cold start injector in the manifold, so it's on all the time...

"so it's on all the time..." LOL. at least a toggle sw wired to the cabin.

maybe the MSD isn't necessary for everyone. Carb and MFI guys seem to love it.

[svandamme]

i'm MSD install away from awaking my black beast
allready drilled the holes, tomorrow will be sweeetness
haven't heard the sound of my 73 since 7 months


for the green bugger:
it does have a switch , but i never turn it off, the engine dies after 6 secs from fuel starvation when idling without my little workaround, i tapped a wire from the injector to my rear window defogger...

i did notice , that i had some more high end power then previously
with the modification , i broke 200 for the first time on my 924
but it was scary as hell , given the stock suspension and skinny tires