bosch blue/red coil with cdi

[pszemia]

Hi there, searching all the shops in mi country, couldnt get the bosch 0221121001 coil to my cdi system. Searching the forum, found and old post from warren saying that both blue and red coils can be used. Is this right?? I don't care if i loose some hp, only use the car on weekends 2hs max.

The reason to use this coils is that i cant get neither the bosc or the msd high vibrance. If i could i will get the msd, but i cant.

So i will need you recomendation to use an alternative coil that doesnt damage the cdi. Also if there are special red or blue coils i can use.

I can get the bosch 022122001 from my local dealer and don't know if it works.

Is the last part to complete the whole restoration

Thanks everybody!!!

[Steve@Rennsport]

JMHO,....

The Bosch blue coil was designed and intended for Kettering ignition systems, NOT CDi's. We see power losses on the dyno with those things.

I cannot see why an MSD High Vibration coil cannot be sourced so your car runs properly. If thats not an option, just use the current Bosch (silver) replacement and carry a spare so you aref not stranded anywhere.

[pszemia]

Steve, when you say power losses, you mean i can damage the cdi?? or it will just run poorly but doesn't damage the cdi??

I want to use a blue or red, whatever you say to test the car 1 month, i think, a total of 10 / 15 hours, meanwhile, i'll import a new MSD coil from usa to my country.

The silver one i can get is the 0.221.122.001 instead of the "121.001", it's also silver, but not the same.

The blue one, is there any special Part Number? or just any blue coil will work?

thanks!

[pszemia]

bump

[brads911sc]

I would not "test" anything with an improper coil. I would order the proper MSD and wait until it arrives to do anything. If you use the wrong coil, and the car does not run right, you will have difficulty knowing whether something is out of adjustment or not installed correctly or whether its just your coil. it is best to check things like the coil, plugs, cap and rotor, vacuum lines and easy things like that before diving into more complex things like the fuel system, etc. All of this is really impossible if you are starting with a known incorrect coil. in this case its worth the wait... JMHO.

[pszemia]

so, i'll have to order an MSD and wait for it.. :S

[Steve@Rennsport]

Originally Posted by pszemia

Steve, when you say power losses, you mean i can damage the cdi?? or it will just run poorly but doesn't damage the cdi??

Power losses,...reductions in BHP. It doesn't run poorly, just not optimal since the plug voltage is much less.

I want to use a blue or red, whatever you say to test the car 1 month, i think, a total of 10 / 15 hours, meanwhile, i'll import a new MSD coil from usa to my country.

I think its a good idea to get the correct coil for your system.

The silver one i can get is the 0.221.122.001 instead of the "121.001", it's also silver, but not the same.

Its not the same part.

The blue one, is there any special Part Number? or just any blue coil will work?

The Bosch ones are all the same and quite common.

[pszemia]

thanks steve, now i am in a mental dilema haha, it is confirmed that i am getting a new MSD from USA delivered to my country, it will take 15/20 days to arrive.

But meanwhile, i have a blue coil PN 0.220.051.054, and don't know if i can use it test if the "new" cdi works propertly, or i will destroy it with this coil...

[pszemia]

forgot to add, the CDI i have is a 008 model.

[JFairman]

I've never heard that any MSD coil has the right impedance for the Bosch or Permatune CDI.

The only coils I know of that have the right resistance or impedance in the primary wiring and work correctly with a Permatune replacement CDI or the origonal Bosch CDI are the Permatune coil which is epoxy filled and the highest quality coil that will work with it, or an old NLA black painted German bosch OEM coil, or the now made in Brazil clear anodized aluminum color coil with the numbers 0221121001 stamped into the bottom of it.

Unfortunately you only rent the Brazilian coils when they are mounted upside down on the fan housing so carry a spare. The heat and vibration there will kill them.

When I had a Permatune CDI I used the Brazilian bosch coil because it was the only one available and I put male spade termainals on the coil studs and female spade termainals on the primary wires so I could easily swap out the Brazilian coils on the side of the road when one went on vacation.

With the coil completely under the intercooler on a 930 thats impossible to do quickly on the side of the road without installing the spade termainals on the primary wires.
Squeeze the female spade terminals a little with pliers to make them fit on the male spades tighter so they don't vibrate off while driving.

Or switch over to MSD CDI and their epoxy filled high vibration blaster coil and be done with all that.

[pszemia]

my decision to the MSD is because the cheap brazilian coil (i know very well brazilian products, in special cars, that are very bad quality, so doesn't notice me, the bad silver coil quality), stop workingvery quickly.

Also i posted i can get the 0.221.122.001, but no one told me if that could work with the CDI i have.

[brads911sc]

IMHO, if this were my car...

I would buy the MSD 6AL and the Correct MSD Blaster Coil. Install them together and be done with it. I would just wait to get the right parts and not do this mix and match thing you keep mentioning. The entire project will cost you $300 which is a small price to pay for a good ignition/spark. This is a critical part of the vehicle and will often mean the difference between driving and sitting on the side of the road. Not the place where I would mix and match parts that are not compatable or go on the cheap. Not sure your situation, but I would try to get the matched parts together on this.

[pszemia]

brad, the CDI will be there either way, i am not buying the MSD, i'll keep the original bosch, i have just bought it, and also reading all the posts in the forum about it, every possibly thread recommends to keep the original one, because it lasts almost forever, and also if it's time to repair, it's very easy to repair and keep it running again.

The only doubt here, is the coil.

warren, used to say that bosch blue coil will work, but there are a lot of bosch blue coil models around here, and by the time i wait for the MSD (a recommendend replacement by warren, and also 101 book), i am very very anxious to wait for it, i want to start the CMA for third and last time as soon as possible with all the new parts i bought

[brads911sc]

Understand completely.

Today i received a new Wideband O2... and I was out installing it just barely after getting off my suit and tie.

In this case, I think I would wait for the MSD coil you ordered. That way you can get it all set up and running great. Good luck with it. Let us know how it goes.

Originally Posted by pszemia

brad, the CDI will be there either way, i am not buying the MSD, i'll keep the original bosch, i have just bought it, and also reading all the posts in the forum about it, every possibly thread recommends to keep the original one, because it lasts almost forever, and also if it's time to repair, it's very easy to repair and keep it running again.

The only doubt here, is the coil.

warren, used to say that bosch blue coil will work, but there are a lot of bosch blue coil models around here, and by the time i wait for the MSD (a recommendend replacement by warren, and also 101 book), i am very very anxious to wait for it, i want to start the CMA for third and last time as soon as possible with all the new parts i bought

[pszemia]

i know, i have to wait.. i think i'll kill the waiting time changing some gaskets i bought from the air intake, because i was getting too much air flow throguh them...