Quote:
Originally Posted by Louisieg55
I think the real long term issue with CIS is that the parts will become harder to find and more expensive to replace. There are only a handful of shops or people left who still rebuild WURs and fuel distributors. Once those experts retire or stop doing the work, people like myself will eventually have to convert to carbs or fuel injection just to keep these cars on the road. Even if you have the skills and knowledge, the parts simply will not be available at an economical scale.
Tony mentioned it took him close to five attempts to get my fuel distributor dialed in correctly using different shim combinations. That tells you how precise and specialized the work is. And that level of expertise is getting rare.
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Not sure if you knew this, CIS is simply Porsche's name for Bosch K-Jetronic which was used in many other makes from that era.
Anyone of those "specialists" will have no trouble with CIS either.
In fact, Bosch itself offers a remanufacturing and repair service
That probably ensures these will outlast those carbs and "modern" EFI systems as well.
Quote:
Originally Posted by 930cabman
I do not have a tech answer, but know all 4 of the carbureted older vehicles I own do just fine.
There can be no question to the accuracy of a modern FI system, but after testing/diagnosing CIS for several years and unable to find any local assistance, I had to throw the towel
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I hear you.
I'm guessing ... and it's a pure guess ... Porsche didn't get around to a good KJetronic system until the SC era. I speculate wildly it may have something to do with the seemingly convoluted intake system unique to CIS.
Quote:
Originally Posted by nospiners
Absolutly agree , practice makes perfect , more of a feel than anything .. The throaty carbyreted sound cannot be duplicated..All adjustments with cheap simple tools ..
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Is that what "specialists" do ? Tune and adjust by feel ?
When the engine doesn't even fire up, how would that technique work ?