I have found the part numbers for the item I need:
Porsche part number 901.615.111.00
Bosch part nr 0.333.400.01
I have found the part numbers for the item I need:
Porsche part number 901.615.111.00
Bosch part nr 0.333.400.01
1971 911S, 2.7RS spec MFI engine, suspension mods, lightened
Early 911S Registry Member #425
See Post #6.
You would be driving the car by now. It's fun to fix things but sometimes it's better to use the sources that are available to us. Support these folks so they are around when you need them.
Good luck,
Tom
Early S Registry #235
rgruppe #111
Did you ask Otto if he has a repaired unit in stock? I know when I talked to him he did. The cost is higher of course, but you get the part asap without having to source one.
Cheers,
Michael
1970 S Coupe - Light Ivory - #9110300237
1983 SC Cabriolet - Moss Green Metallic - #WP0EA091XDS170830
I was looking for a core to send to Otto. Sorry I forgot to update this thread. Otto just got back to me with a quote for a complete unit and I will most likely need to go with this, despite the understandable cost.
The car ran without one, it just made a few rude "bangs" out of the exhaust occasionally.
I can drive the car still, so I am really glad.
1971 911S, 2.7RS spec MFI engine, suspension mods, lightened
Early 911S Registry Member #425
Is it possible to source components for this board ? Now I'm not an electrical guy but the larger diameter silver component central to the board has 3 legs - two of which are broken - so I'm guessing the unit won't work too well when back on the car - so is this component available or is there a replacement component ??
I see -- BSX45 25 stamped on the side of the component.
Thanks ...
BTW this is a spare ....
Last edited by nickd; 06-02-2012 at 12:03 PM.
Nick D - Run Flat
1973 RHD 911 Carrera RS #0358 - Fun Car
2016 Cayenne Diesel - Tow Car
2017 Macan S - Better Half's Car
1955 356 Speedster SOLD
1976 911 2.7 SOLD
2006 Cayman S SOLD
2006 Cayenne S SOLD
2008 Carrera S F77 SOLD
2011 Cayenne S TOTALLED (T-Boned but kept us safe)
2015 Macan S SOLD
2015 GT3 - Track Car
2016 Cayenne SOLD
2016 Cayenne GTS TOTALLED (Bloody big deer)
Still looking for 1st Edition Carrera RS book #358.
Life is way too short to drive boring cars.
I'm not an electrical guy either but a friend helped me with this. 5 components were changed (the ones with no nickel coating on the legs, the unprotected copper has just withered away).
The five components that usually need to be replaced:
The small transistors were changed from BCY58-1X to 2N2222A, the big transistor from BSX45-25 to BC140-16. D1 was changed to a 8.2V Zener (circled below). The Zener really should have been 8.4V but 8.2V is much easier to find and seems to work well.
It works great now, signal on at about 1500 rpm and off again when rpm drops to about 1300.
Last edited by mikael; 06-03-2012 at 03:46 AM.
Mikael, thanks with the component numbers - very helpful. I guess it would be best to change out as advised ...
Nick D - Run Flat
1973 RHD 911 Carrera RS #0358 - Fun Car
2016 Cayenne Diesel - Tow Car
2017 Macan S - Better Half's Car
1955 356 Speedster SOLD
1976 911 2.7 SOLD
2006 Cayman S SOLD
2006 Cayenne S SOLD
2008 Carrera S F77 SOLD
2011 Cayenne S TOTALLED (T-Boned but kept us safe)
2015 Macan S SOLD
2015 GT3 - Track Car
2016 Cayenne SOLD
2016 Cayenne GTS TOTALLED (Bloody big deer)
Still looking for 1st Edition Carrera RS book #358.
Life is way too short to drive boring cars.
And now we know why time/technology marched on and left this contraption by the side of the road in favor or "reliability".
One of the coolest induction systems that was.
Glad you got it fixed!
Early S Registry #235
rgruppe #111
I wish our current electronics lasted as long!!
David
'73 S Targa #0830 2.7 MFI rebuilt to RS specs
I just repaired mine. Three of the small transistors needed replacing including D1. I just used BC549-C (a common NPN transistor in Europe) for all of them, and the RPM transducer worked fine after that. So it seems that there is no need to use a zener diode for D1. Maybe that will help others who need to do this repair.
I checked the correct RPM thresholds with the unit in the car. It also cycles the RPM correctly when you manually press the switch while the engine is at 2000 RPM, just like the CMA document describes. A short test drive confirmed everything is working well. I'm happy!
1970 2.2S Elfenbeinweiss
1972 2.4T Targa Aubergine (MFI) [For sale]
2002 996 TT Midnight Blue
Member #3833