replacement C2 tach question
Thread Starter
Burning Brakes
Joined: Feb 2003
Posts: 764
Likes: 13
From: Harvard MA
tach question
Hi All,
The tach in my 66 needs to be recalibrated. I can buy a new one from Long Island Corvette Supply or send mine out for recalibration. If the one from LICS is calibrated correctly, this is a faster and easier route for me to take, but if will need calibration its not.
LICS will not promise it will not need to be calibrated, but the person on the phone also admitted that she was not very well informed on this.
Does anyone have experience with such a replacment instrument from LICS or any other supplier concerning correct "out-of-the-box" calibration?
Also wondering who makes these.
Thank you.
The tach in my 66 needs to be recalibrated. I can buy a new one from Long Island Corvette Supply or send mine out for recalibration. If the one from LICS is calibrated correctly, this is a faster and easier route for me to take, but if will need calibration its not.
LICS will not promise it will not need to be calibrated, but the person on the phone also admitted that she was not very well informed on this.
Does anyone have experience with such a replacment instrument from LICS or any other supplier concerning correct "out-of-the-box" calibration?
Also wondering who makes these.
Thank you.
Last edited by brucep; Mar 19, 2008 at 09:57 PM.
Melting Slicks
Joined: May 2007
Posts: 3,461
Likes: 18
From: cooper city florida
I can't speak for a out of the box LIC's calibration,but I bought a rebuilt and restored tach from Redline and it reads 500rpm high at 3000rpm. So apparently,there are no guarantees. Its too late now because my cluster is already installed,but if I had to do it all over again,I would of taken the tach to a local instrument or speedo shop and for a few bucks, had the calibration checked BEFORE I installed it in my cluster.
Safety Car
Joined: Feb 2006
Posts: 4,142
Likes: 704
I bought new tach and speedo heads from LICS many years ago. They came from GM. Then, shortly after that, they were no longer available so I don't know who is making the ones available today. I would have to ASSUME that a new head unit would be calibrated from the factory. But they are now $150.00 so I would also ASSUME that it would be way cheaper to have one calibrated.
The one question that I would really love to have answered is...what do they do to "calibrate" them. I have stared at the internal workings from my old ones...for hours...and have no clue as to what they would actually adjust. The cable spins the magnets that spins around the spring. No contact between the two. Perhaps it is the spring tension. I must google this.
The one question that I would really love to have answered is...what do they do to "calibrate" them. I have stared at the internal workings from my old ones...for hours...and have no clue as to what they would actually adjust. The cable spins the magnets that spins around the spring. No contact between the two. Perhaps it is the spring tension. I must google this.
Thread Starter
Burning Brakes
Joined: Feb 2003
Posts: 764
Likes: 13
From: Harvard MA
From what I know, calibration is done with machines that change the strength of the magnet's magnetic "strength." I've also heard these machines are not easy to come by these days.
Last edited by brucep; Mar 24, 2008 at 01:06 PM.
Team Owner
Joined: Oct 2000
Posts: 38,897
Likes: 1,926
From: Washington Michigan
