How fragile are the CDI units from 914-6 engines? Is there a way for the DIY mechanic to evaluate them out of the car?
We don't know the history of the engine. I do know that it hasn't been in a car for over 10 years. We're going to start tearing the engine for a complete rebuild in a couple weeks, and now would be the time to do something with the CDI (among other things) if warranted.
A forum member mentioned https://ashlocktech.com/order does CDI restorations, but I will spend the $350 elsewhere it's not needed for this.
Thanks for any experience you can share.
P.S. For these 914-6 / 911T engine topics, I never quite know whether to post them here or over on a 911 board like Rennlist. Is it bad form to cross-post?
@http://www.914world.com/bbs2/index.php?showuser=24575 Hi Dennis. They usually have a high pitched whine when activated by ignition switch. There are a few peeps who know them well. I found most info about them on Pelican. No bad form asking there.
PartsKlassic does repair / replacement as well on CDI and old distributors. https://www.partsklassik.com/
Ashlock is a great guy to deal with, extremely knowledgeable.
Good luck!!
Matter of risk aversion. Whole car is 50 years old. Any part could fail at any time. Electronic parts that leave you stranded on side or road probably more likely
Evaluate based on your comfort level.
That said, I have not had to tow home one of my old cars in the last 15 years. I always worry about taking them on long drives.
My daily drivers for the last 15 years have been new BMW's. Every one of them has been towed or limped to dealer. For some reason I don't hesitate to jump in them for a long drive (partially do to free road side assistance).
Might just be that I know every part I have touched on old cars that could possibly come back to bite me. New cars never touched by me are assumed to be perfect
PS: planning on driving 73 -6 conversion 1000 Miles round trip to red rocks classic. planing on carrying plenty of spares and travailing with a friend (they are planning on driving a car that's only 40 years old, not as much worry about We figure with two cars one of use can drive the other to get parts if needed )
john
The Bosch CDI boxes are notorious about failing without warning They have a problem with the solder joints from the power transistor breaking.
When I had the 2.4 in my 914-6 conversion, I modified the CD mount bracket to hold two CD boxes. If the active one failed, I would be able to just plug in the other one and continue down the road.
I keep a known good spare CD box in the factory six for the same reason.
And just a shameless plug for my former employer... WWW.ALLZIM.COM rebulds Bosch CD boxes.
Clay
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