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: 1,202
Likes: 435
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
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
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.
