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Senior Member
Join Date: Jan 2001
Location: Left Coast, Canada
Posts: 4,572
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It's no wonder these things DIE!
After a short drive tonight, I was under the hood checking the oil etc.
I happened to put my hand on the Bosch CDI box.....ouch!.....that sucker sure gets hot! Yes, there are a few cooling fins on the outside of the box, but I'm thinking....why didn't Porsche mount the box where it could get more, cool air?
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'81 SC Coupe "Blue Bomber" "Keep your eyes on the road, and your hands upon the wheel."- J.D.M. |
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07-22-2003, 09:25 PM
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PRO Motorsports
Join Date: Nov 2001
Location: Burbank, CA
Posts: 4,580
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Probably just to keep it out of the weather.
They last a long long time though. I think mine made it from January of '71 until fall of '96. Not too bad! When my original coil shorted out, and turned into a heating element, that couldn't have helped it any either!
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'69 911E coupe' RSR clone-in-progress (retired 911-Spec racer) '72 911T Targa MFI 2.4E spec(Formerly "Scruffy") 2004 GT3 |
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07-22-2003, 09:56 PM
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Registered
Join Date: Mar 2001
Location: Marysville Wa.
Posts: 22,431
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i was thinking, that a small duct/hose off the fan housing, directed at the CD box might be a good idea. when i get my turbo car back together, i'm going to do that. i had one fail just as i was approaching the customs inspector, returning from canada, after waiting in line for 2 hours at 85° temps. that was kind of embarrassing.
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https://www.instagram.com/johnwalker8704 8009 103rd pl ne Marysville Wa 98270 206 637 4071 |
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07-23-2003, 08:01 AM
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Senior Member
Join Date: Jan 2001
Location: Left Coast, Canada
Posts: 4,572
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That's a good idea John. I feel something should be done to prolong the life of the box.
Maybe excessive heat is why folks have troubles with Permatunes and MSD's too.
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'81 SC Coupe "Blue Bomber" "Keep your eyes on the road, and your hands upon the wheel."- J.D.M. |
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07-23-2003, 05:42 PM
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Registered
Join Date: Apr 2001
Location: Linn County, Oregon
Posts: 48,521
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my original...still alive since '72. Guess I'm among the lucky?
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"Now, to put a water-cooled engine in the rear and to have a radiator in the front, that's not very intelligent." -Ferry Porsche (PANO, Oct. '73) (I, Paul D. have loved this quote since 1973. It will remain as long as I post here.) |
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07-23-2003, 06:27 PM
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Registered
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Would a Cool Collar fit around a CDI box .............
 -- Curt
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07-23-2003, 06:30 PM
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Registered
Join Date: Aug 2000
Location: Deep in the bowels of UCLA hospital
Posts: 2,316
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how about a fan...since sitting in traffic with a duct can't be of much help...link it with your carrera cooler fan...bam you're in buisness
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07-23-2003, 06:31 PM
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Senior Member
Join Date: Jan 2001
Location: Left Coast, Canada
Posts: 4,572
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Quote:
I'm thinkin a nice little 12volt fan like the ones that cool the rad on a Harley V-Rod. They are made in Italy by Spal.
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'81 SC Coupe "Blue Bomber" "Keep your eyes on the road, and your hands upon the wheel."- J.D.M. |
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07-23-2003, 06:43 PM
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Information Junky
Join Date: Mar 2001
Location: an island, upper left coast, USA
Posts: 73,189
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how about a spare...
Relax Doug. (at least for this weekend)
John Walker has generously lent us an extra 6-pin CDI for the Round-up drive. (He's part of the plot. . .just between you and me. . . okay?)
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Everyone you meet knows something you don't. - - - and a whole bunch of crap that is wrong. Disclaimer: the above was 2¢ worth. More information is available as my professional opinion, which is provided for an exorbitant fee. 
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07-23-2003, 09:01 PM
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1971 Porsche Targa 2.5L
