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Anyone ever seen a Bosch CDI like this?
It's a 3 pin unit, but I've never seen one like this.
 
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Current: 1975 911S --Chocolate brown Past: 1967 911S --Bahama Yellow 1990 C2 Targa --Silver 1973 914 2.0 --Delphi Green |
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08-26-2005, 10:37 AM
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I doubt that it is a CDI ... probably an early - mid '60s 'Transistor Ignition.' I have seen similar units on several Porsche race cars of the period in Frere's books ... used external ballast resistors wound on balsa wood boards, wasn't an integrated system like the CDI.
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Warren Hall, Jr. 1973 911S Targa ... 'Annie' 1968 340S Barracuda ... 'Rolling Thunder' |
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08-26-2005, 10:49 AM
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Found this...............look 5 items down...............how's your Russian??
http://igishop.ru/details.php?cat_id=10346&sup_id%5B%5D=67&sup_id%5B%5D=30&sup_id%5B%5D=26
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- '00 Dodge Viper GTS - Steel Grey - Yep...a domestic. - '87 930 - Guards Red - Sold - '82 911SC - Grand Prix White - Gone - '78 928 - Silver - Long gone - '04 Subaru WRX wagon - Sold |
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08-26-2005, 10:57 AM
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Says "Switchboard, ignition system"
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Warren & Ron, may you rest in Peace. |
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08-26-2005, 11:03 AM
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Guess I should have used a translation program 1st!
Babel fish
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- '00 Dodge Viper GTS - Steel Grey - Yep...a domestic. - '87 930 - Guards Red - Sold - '82 911SC - Grand Prix White - Gone - '78 928 - Silver - Long gone - '04 Subaru WRX wagon - Sold |
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08-26-2005, 11:05 AM
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Wow! Well this is what's running in my 67S, and I had just assumed it was one of the M&W CDI boxes untill I removed it and found the Bosch markings.
That answers some strange problems I had with a bosch blue coil. In the pic I replaced the larger blue coil with the smaller one and the car wouldn't idle at anything less than 15 degrees advance and wouldn't rev past 4500. So I put the old (big blue) coil back in, but as a backup I purchased a black (CDI) coil. I'm now guessing that's not going to work?! So what the hell is this big blue coil, something special for this type of ignition? Or is it possible that my smaller new blue coil is just a bad unit.. Help!!  
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Current: 1975 911S --Chocolate brown Past: 1967 911S --Bahama Yellow 1990 C2 Targa --Silver 1973 914 2.0 --Delphi Green |
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08-26-2005, 11:06 AM
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Actually, it says,
Commutator, sistema zazhiganiya. зажигания is ignition. One remnant of growing up in the cold war is that I can still read cyrillic. Doesn't look to be a VW, Benz, BMW or Volvo part. Who else used bosch as a supplier? NSU?
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'66 911 #304065 Irischgruen ‘96 993 Carrera 2 Polarsilber '81 R65 Ex-'71 911 PCA C-Stock Club Racer #806 (Sold 5/15/13) Ex-'88 Carrera (Sold 3/29/02) Ex-'91 Carrera 2 Cabriolet (Sold 8/20/04) Ex-'89 944 Turbo S (Sold 8/21/20) Last edited by 304065; 08-26-2005 at 11:34 AM.. |
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08-26-2005, 11:20 AM
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Location: TX USA
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Retro,
What are the Bosch part numbers stamped on the bottom of the cans? Measure the primary and secondary winding resistances of the two coils, and maybe you will have an answer. A CDI coil will definitely not work! It doesn't have enough inductance to operate correctly, and would overload the driver transistor, and probably overheat, and maybe even burn out the driver transistor! My suggestion is to yank all of that cobbled wiring and replace it with the simple CDI system, since you already seem to have the parts for the conversion ...
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Warren Hall, Jr. 1973 911S Targa ... 'Annie' 1968 340S Barracuda ... 'Rolling Thunder' Last edited by Early_S_Man; 08-26-2005 at 11:40 AM.. |
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08-26-2005, 11:21 AM
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Yeah, I just need the 3 pin harness for the CDI box.. the one off this transistor deal won't fit, then I'll swap it out.
The newer small blue coil numbers are 0 221 119 027 and 9 220 081 083 and reads 3.9 ohms The old larger blue coil has 0 221 118 003 and reads .8 ohms between the posts
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Current: 1975 911S --Chocolate brown Past: 1967 911S --Bahama Yellow 1990 C2 Targa --Silver 1973 914 2.0 --Delphi Green |
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08-26-2005, 01:45 PM
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Well, it appears this big blue coil is something specific to this transistor garbage.
It's 1-15 resistance is the same as my black coil at .8 ohms, but the # 4 post to the 1 is 10,900 ohms.. where my black coil is 710.
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Current: 1975 911S --Chocolate brown Past: 1967 911S --Bahama Yellow 1990 C2 Targa --Silver 1973 914 2.0 --Delphi Green |
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08-26-2005, 02:38 PM
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Location: Manhattan Beach, CA
Posts: 2,350
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That ignition unit is a TCI (transistor coil ignition) as mentioned by Warren
and very similiar to ones used on the 917, which were not CDI types. "Well, it appears this big blue coil is something specific to this transistor garbage." - RetroSC - What do you think ALL late model OEM engines use, i.e. TCI systems?
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Have Fun Loren Systems Consulting Automotive Electronics '88 911 3.2 '04 GSXR1000 '01 Ducati 996 '03 BMW BCR - Gone Last edited by Lorenfb; 08-26-2005 at 06:20 PM.. |
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08-26-2005, 06:16 PM
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1985 Porsche 911 3.2 (Still in the stable)
1993 BMW 740 IL (Sold)
1985 Mercedes 380 SL (Sold)
1992 Harley Davidson Fatboy (Sold)
1971 Mercedes 280 SL (Currently being restored)
