[crossy]

Originally posted by mike reeh


crossy good to see you around again. But what I was talking about, was swapping another GM factory tach (of same or similar vintage).. not an aftermarket.. If there was an aftermarket one I would be all over it!

mike

mike , been there too. Even looked at F--D's and mopars. these tachs are LARGE and only having a 5,000 limit means to either find a good one or get yours fixed . I emailed 8 differnt tach repair places and only two were willing and Had appx. $100 Minimum. I know for a fact that original 73-75 style (maybe76 also) cannot be repaired at all.They are totally sealed in some red-ish epoxy.
What makes me sick is that I work with all these RETS electronics guys and Navy Nuke boys that our Nuke plant loves to hire because of their backgrounds. I can only find 2 out of 100 guys that give flip about cars/trucks. I have asked about building a new PC board for them from scratch (prolly $10 worth of parts from radio shack) or buying a Heath kit or something. No luck.
I took apart a tach i had that was bad and unsoldered every little piece and chacked the componets but here are some transistors on there that have no identifiable numbers on them that can't be tested and can't be replaced unless you know how they were programmed. Really ticks me off because i know how simple they must be. I even looked at new tachs figuring to 'gut' them and use the PC board but newer ones are made a lot different around the center area to mount needle. (hard to explain). Hey but damnit I tried.
And I have another idea that May take a while to complete. DAVE