Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Technical BBS > 1- Porsche Technical Forums > Porsche 911 Technical Forum

Reply
 
LinkBack Thread Tools Rating: Thread Rating: 2 votes, 5.00 average.
Author
Thread Post New Thread    Reply
Senior Member
 
Early_S_Man's Avatar
 
Join Date: Dec 1999
Location: TX USA
Posts: 9,806
Send a message via Yahoo to Early_S_Man
Porsche Crest 6-pin SC/Turbo CDI unit repair documentation

Well, after a bit of a delay ...

Here's the schematic and replacement parts list for the Bosch 0.227.300.004 6-pin CDI unit, cussed & discussed at great length ... and used on SCs & Turbos thru '89!















__________________
Warren Hall, Jr.

1973 911S Targa ... 'Annie'
1968 340S Barracuda ... 'Rolling Thunder'

Last edited by Early_S_Man; 07-04-2007 at 11:19 PM..
Old 01-24-2005, 05:15 PM
  Pelican Parts Technical Article Directory    Reply With Quote #1 (permalink)
Registered User
 
Join Date: Dec 1969
Location: Lac La Biche, Alberta, Canada
Posts: 951
Great work Warren. This is what makes this board as great as it is.

Tim
__________________
1986 911 Cab
2008 Audi A6
Old 01-24-2005, 05:20 PM
  Pelican Parts Technical Article Directory    Reply With Quote #2 (permalink)
Somewhere in the Midwest
 
MotoSook's Avatar
 
Join Date: Oct 2001
Location: In the barn!
Posts: 12,453
Excellent, Warren!
Old 01-24-2005, 05:27 PM
  Pelican Parts Technical Article Directory    Reply With Quote #3 (permalink)
Registered User
 
ChrisBennet's Avatar
 
Join Date: Aug 2001
Location: Nashua, NH USA
Posts: 8,021
Awesome!
-Chris
__________________
'80 911 Nogaro blue Phoenix!
'07 BMW 328i Coupe
http://members.rennlist.org/messinwith911s/
Old 01-24-2005, 05:42 PM
  Pelican Parts Technical Article Directory    Reply With Quote #4 (permalink)
Registered User
 
randywebb's Avatar
 
Join Date: Nov 2004
Location: Greater Metropolitan Nimrod, Oregun
Posts: 10,043
Now somebody post a circuit board pic

- That's defintiely $400 worth of parts isn't it.....
__________________
"A man with his priorities so far out of whack doesn't deserve such a fine automobile."

- Ferris Bueller's Day Off
Old 01-24-2005, 08:21 PM
  Pelican Parts Technical Article Directory    Reply With Quote #5 (permalink)
Registered User
 
Grady Clay's Avatar
 
Join Date: Dec 2003
Location: Arapahoe County, Colorado, USA
Posts: 9,032
Warren,

Thanks!

Here is the thread on the Bosch 3-pin. It has a wiring diagram also.
Perma-tune CD or Bosch CD?

Best,
Grady
__________________
ANSWER PRICE LIST (as seen in someone's shop)
Answers - - - - - - - - - - - - - - - - $0.75
Answers (requiring thought) - - - - $1.25
Answers (correct) - - - - - - - - - - $12.50
Old 01-25-2005, 05:41 AM
  Pelican Parts Technical Article Directory    Reply With Quote #6 (permalink)
Senior Member
 
Superman's Avatar
 
Join Date: Feb 2000
Location: Auburn, WA. USA
Posts: 18,701
Very cool. I just wish I understood.

Which of those parts fails, typically, when a Bosch CDI unit stops working?
__________________
'83 SC
Old 01-25-2005, 06:12 AM
  Pelican Parts Technical Article Directory    Reply With Quote #7 (permalink)
I would rather be driving
 
jpnovak's Avatar
 
Join Date: Apr 2000
Location: Austin, TX
Posts: 6,980
Very Nice Warren!

Superman, I think the Thy might have the best chance of going bad. of course, there is always the chance of a blow cap, diode or resistor.
__________________
Jamie - I can explain it to you. But I can not understand it for you.
71 911T SWT - Sun and Fun Mobile
72 911T project car. "Minne" - A tangy version of tangerine
classicautowerks.com - EFI conversion parts
Old 01-25-2005, 06:45 AM
  Pelican Parts Technical Article Directory    Reply With Quote #8 (permalink)
Registered User
 
pwd72s's Avatar
 
Join Date: Apr 2001
Location: Linn County, Oregon
Posts: 33,889
Quote:
Originally posted by Superman
Very cool. I just wish I understood.

Which of those parts fails, typically, when a Bosch CDI unit stops working?
Too true, Supe...we mere mortals wouldn't understand. But in the right hands, this info is valuable. I try to have the info on hand for those with the right hands.
Old 01-25-2005, 09:02 AM
  Pelican Parts Technical Article Directory    Reply With Quote #9 (permalink)
Registered User
 
randywebb's Avatar
 
Join Date: Nov 2004
Location: Greater Metropolitan Nimrod, Oregun
Posts: 10,043
Component replacement and checking is not that hard on these older analog items. You could take a course at a community college and I'd bet 1 course would do it. This also helps stave off Alzheimer's if you are turning gray... If you screw it up, then send it in for re-grooving by a pro.
__________________
"A man with his priorities so far out of whack doesn't deserve such a fine automobile."

- Ferris Bueller's Day Off
Old 01-25-2005, 09:53 AM
  Pelican Parts Technical Article Directory    Reply With Quote #10 (permalink)
Registered User
 
Join Date: May 2002
Location: Up North
Posts: 1,434
Great work Warren...

Another question - what about the pin-out for the 6 pin connector? Is there any place I can find that?

thanks...
__________________
87 930 K27HFS/B&B/Twin-Plug... Megasquirted
Old 01-25-2005, 12:06 PM
  Pelican Parts Technical Article Directory    Reply With Quote #11 (permalink)
Senior Member
 
Early_S_Man's Avatar
 
Join Date: Dec 1999
Location: TX USA
Posts: 9,806
Send a message via Yahoo to Early_S_Man
Porsche Crest

Here is the pinout looking into the connector with the mounting flange sitting on the hand or table ...

. 31/1 ... TD ... 31d

. A . . . . 15 . . . 7

==============

31/1 -- Power ground
31d -- Signal ground [green coax shield] for trigger signal

15 -- +14 Volt power lead

7 -- Trigger signal from distributor magnetic pickup coil

TD -- Tachometer Drive signal

A -- +460 Volt pulse output to coil
__________________
Warren Hall, Jr.

1973 911S Targa ... 'Annie'
1968 340S Barracuda ... 'Rolling Thunder'

Last edited by Early_S_Man; 01-26-2005 at 10:08 AM..
Old 01-25-2005, 07:44 PM
  Pelican Parts Technical Article Directory    Reply With Quote #12 (permalink)
Senior Member
 
Early_S_Man's Avatar
 
Join Date: Dec 1999
Location: TX USA
Posts: 9,806
Send a message via Yahoo to Early_S_Man
Here are some resources worth reading if you are a bit rusty on the theory of operation ...

http://www.irf.com/product-info/thyristor/manual/scr_manual.pdf

http://www.st.com/stonline/books/pdf/docs/4347.pdf

http://www.st.com/stonline/books/pdf/docs/5201.pdf
__________________
Warren Hall, Jr.

1973 911S Targa ... 'Annie'
1968 340S Barracuda ... 'Rolling Thunder'
Old 02-05-2005, 07:26 AM
  Pelican Parts Technical Article Directory    Reply With Quote #13 (permalink)
Senior Member
 
Early_S_Man's Avatar
 
Join Date: Dec 1999
Location: TX USA
Posts: 9,806
Send a message via Yahoo to Early_S_Man
Porsche Crest

And, here is an application note from RCA that may be helpful ... after much difficulty with pic uploads [never copied the image code to edit window -- multiple attempts] ...



















__________________
Warren Hall, Jr.

1973 911S Targa ... 'Annie'
1968 340S Barracuda ... 'Rolling Thunder'
Old 02-05-2005, 07:52 AM
  Pelican Parts Technical Article Directory    Reply With Quote #14 (permalink)
Senior Member
 
Early_S_Man's Avatar
 
Join Date: Dec 1999
Location: TX USA
Posts: 9,806
Send a message via Yahoo to Early_S_Man
Porsche Crest

And, here are the last two pages of AN-6288 ...



__________________
Warren Hall, Jr.

1973 911S Targa ... 'Annie'
1968 340S Barracuda ... 'Rolling Thunder'
Old 02-05-2005, 08:28 AM
  Pelican Parts Technical Article Directory    Reply With Quote #15 (permalink)
Registered User
 
silverc4s's Avatar
 
Join Date: Apr 1999
Location: Austin, TX, America
Posts: 3,056
Garage
I nominate this entire thread to become a PP Tech Article. Invaluable information from Warren as always, Thanks!!!
__________________
Bill

69 911 T Targa, 2.4E w/carbs (1985-2001)
70 911 S Coupe, 2nd owner (1989- 2015)
73 911 T Targa, 3.2 Motronic (2001- )
Old 02-05-2005, 08:57 AM
  Pelican Parts Technical Article Directory    Reply With Quote #16 (permalink)
Senior Member
 
Early_S_Man's Avatar
 
Join Date: Dec 1999
Location: TX USA
Posts: 9,806
Send a message via Yahoo to Early_S_Man
Porsche Crest

Here is a bit of design info from GE Semiconductors Electronic Data Library #400.6 on the single-transistor inverter as used by Bosch in our CDI units:


__________________
Warren Hall, Jr.

1973 911S Targa ... 'Annie'
1968 340S Barracuda ... 'Rolling Thunder'
Old 02-21-2005, 12:19 AM
  Pelican Parts Technical Article Directory    Reply With Quote #17 (permalink)
Registered User
 
KobaltBlau's Avatar
 
Join Date: Mar 2004
Location: City of Seattle, WA
Posts: 3,374
Truly awesome. Adding to the knowledge bank, Warren!
__________________
Andy
Old 02-21-2005, 09:15 AM
  Pelican Parts Technical Article Directory    Reply With Quote #18 (permalink)
 
Now Available for Ordering:   101 Projects For Your BMW 3 Series 1982-2000  [more info]
Registered User
 
Grady Clay's Avatar
 
Join Date: Dec 2003
Location: Arapahoe County, Colorado, USA
Posts: 9,032
Randy,

Thyristor is an early name for a Silicon Controlled Rectifier (SCR). The name is a combination of Tryratron tube and transistor. The beauty of an SCR is that a miniscule current or pulse can turn on a huge current and it stays on until the source current drops below a certain threshold. This is used in CDI and household dimmers.

Best,
Grady
__________________
ANSWER PRICE LIST (as seen in someone's shop)
Answers - - - - - - - - - - - - - - - - $0.75
Answers (requiring thought) - - - - $1.25
Answers (correct) - - - - - - - - - - $12.50
Old 02-21-2005, 10:27 AM
  Pelican Parts Technical Article Directory    Reply With Quote #19 (permalink)
Registered User
 
randywebb's Avatar
 
Join Date: Nov 2004
Location: Greater Metropolitan Nimrod, Oregun
Posts: 10,043
You're right -- I was thinking of thermistor.... Dunno whether to blame it on age or elapsed time since I've done any electronics work... I'll kill that post.
__________________
"A man with his priorities so far out of whack doesn't deserve such a fine automobile."

- Ferris Bueller's Day Off
Old 02-21-2005, 10:59 AM
  Pelican Parts Technical Article Directory    Reply With Quote #20 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 07:01 AM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2016 Pelican Parts - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.