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I bought a dizzy with a vacuum advance and one of these at Valla last year from Gary at Wolfsbugh Automotive, as well as a spare electronic ignition. I had run Compufires in a 009 for 10 or 15 years and had a pretty good run - I think I had 2 fail in that time.
psimitar Son of Jim - Creator of Good
2,506 posts · joined Jan 2009 ·
If the electronics are of a high enough switching frequency, bad design, or low quality components then it'll work fine for a while but will degrade quickly. Unfortunately much of the items made in china cut costs to the bone and hence make things from the cheapest that will do the job.beetleboyjeff wrote:I bought a dizzy with a vacuum advance and one of these at Valla last year from Gary at Wolfsbugh Automotive, as well as a spare electronic ignition. I had run Compufires in a 009 for 10 or 15 years and had a pretty good run - I think I had 2 fail in that time.
I installed the distributor a week or so after Valla and found it was great - the vacuum advance (replacing a 009) gave me a lot more low speed torque, great for towing my trailer. In November, I started getting a miss - it wasn't speed or power related, just random - it would even miss a few when idling, almost stop, then carry on again.
I fitted the spare electronic module - problem fixed. Then in February, while doing a job out of town, I was on my way home and the motor suddenly started missing like anything. I checked everything, and the centre electrode of the dizzy cap seemed burnt, so I replaced the cap, and I was away. The problem re-appeared a few times over the next few days, mainly if I got the revs up a bit - noticed it around town, but cruising at low revs on country roads, it was OK. If I stopped and let it cool down for 20 mins or half an hour, it would go again.
I put points and condenser back in, and no more problem since. Maybe I had 2 dodgy electronic units out of a bad batch?
I do think it generally runs smoother with electronic ignition, and certainly less problems in wet weather, so I am watching this thread with interest to see what one to get next.