tach filter
Thread Starter
Advanced
Joined: Aug 2001
Posts: 50
Likes: 0
From: parkland fl
tach filter
Anyone know where to get a tach filter? I ordered one from ecklers and they said it was temporarily discontinued. The restoration store on this website said the same thing. I need a tach filter and I don't know where else to try? Anyone know a site that might have them? Anyone have an extra they would be willing to sell that is new? A used one that is like new and works? Let me know.
-Eddie
-Eddie
Intermediate
Joined: Jun 2001
Posts: 28
Likes: 0
From: Lake Saint Louis MO
Re: tach filter (c5vette98)
Just my .02 worth! My impression of the tach filter on my '75 was that it was just an inline capacitor. Anyone out there in C3-Land know the electrical characteristics of the filter( capacitance in microfarads or ?) so that an alternate source could be found? Thanks , Bruce
Le Mans Master
Joined: Aug 2000
Posts: 9,662
Likes: 7
From: Semper ubi, sub ubi
Cruise-In VI Veteran
Cruise-In VII Veteran
Re: tach filter (c5vette98)
Here is a gif file that Zwede originally posted. It is a schematic of the tachfilter, they are very easy to make and the parts can be purchased at Radio Shack for $6.67 cents ( I know because one of the Forum members MIKER just built one from this diagram and bought the parts from R-Shack.)
One of the guys I work with even took his old filter, drilled out the case and replaced the insides with the parts mounted on a little piece of perf-board. Then the sealed up the ends (original wires poking out) with epoxy. Mounted it back on the firewall and it works like a champ.
One of the guys I work with even took his old filter, drilled out the case and replaced the insides with the parts mounted on a little piece of perf-board. Then the sealed up the ends (original wires poking out) with epoxy. Mounted it back on the firewall and it works like a champ.
Melting Slicks
Joined: Dec 2000
Posts: 2,198
Likes: 2
From: Eastern Connecticut
Re: tach filter (steelblu75)
On a previous topic, someone parted out an 83 Z28 and it has the exact part # filter hooking up the tach to the distributor. Also 84 Monte SS has one too. Perhaps this will broaden the search, for those who are solder-challenged. Joe
Burning Brakes
Joined: Jan 2001
Posts: 1,221
Likes: 448
From: Loir Valley Sarthe, France
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2024 C3 of the Year Finalist - Unmodified
2023 C3 of the Year Finalist - Unmodified
Re: tach filter (c5vette98)
I asked this once before, but I don't recall an answer.
Is the filter actually necessary? I ask as I had some problems with the tach, which were cured, apparently by by-passing the filter. The tach has worked fine for more than three years now, so it makes me wonder.....
Regards
Is the filter actually necessary? I ask as I had some problems with the tach, which were cured, apparently by by-passing the filter. The tach has worked fine for more than three years now, so it makes me wonder.....
Regards
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Le Mans Master
Joined: Feb 1999
Posts: 8,351
Likes: 75
From: Tampa Bay FL
Re: tach filter (UKPaul)
The tach filter is essential to getting a 'clean' reading on the tachometer and preventing damage. I recall that Zwede advised me to NOT run a direct lead to the tach connector. I built this from his schematic and additional instructions and it has worked flawlessly for over a year now. Be sure to cover everything with shrinkwrap to prevent grease/grime damage.
