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Discussion Starter · #1 ·
While I await the arrival of my replacement (used) speedometer from Jared I'll throw out this question.

The original speedo is broken so I am replacing it with a used one. I would like to set the new (used) one to zero (0). I will keep the old one which stuck at 72K, but want to record mileage from the rebuilt motor and new body.

Can the odometer be rolled back? and if yes, how difficult is it? and what is the procedure?
 

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I guess if you wanted to reset a used speedometer to the setting on your old, you could use a small screwdriver to gently pry the chrome bezel off. Once the bezel and glass are removed, removing the two screws at the rear of the housing will allow the odometer to separate from the housing. Looking at the odometer, you will see a little clip on the odometer shaft. Remove the clip and the odometer will be able to be removed. Keep track of what row shows through the face window. I guess if you separated the numbers a little, they may be able to be moved to your original setting.

Now this is pure speculation on my part as I have never actually tried this.
 

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I recently had to get a new (used) speedo to go with the Getrag. I brought my old speedo showing 67900 miles on it to the speedo shop and they set the new one to match. It cost me $20. So I still show an accurate mileage on the car.

James
 

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4ZUA787
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665 Posts
lets jus say it can be done very easily by prying chrome bezel off carefully and then undoing the two screws on back then the little rodd that goes thru the numbers it is pressed on each end so the rod cannot be removed take a dremel or a file grind down the little bumps on one side of the rod then it can be pulled out do this all carefully practice on an old speedo first then push rod all the way back thru and use some sort of high strenght glue to hole the rod in i used jb weld. and then reassemble the houseing and now u gots a speedo reading zero. although no ive never done this befor ever just how i think it could be done......wink.....wink......
 

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OPEL-LESS!!!
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i thought i heard somebody say they chucked a pencil in a drill and used the eraser end in the speedo drive and just used the drill to get the odometer where they watned it?
 

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4ZUA787
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665 Posts
yah that was in a previouse post i forget exactly but i thought it would take like a week or something to get it from 99,999 back to zero via that method, not sure but thats what my memory is recalling for some reason.
 

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OPEL-LESS!!!
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speedo reads 62,XXX miles....that'd be a long time with a drill to go to zero
 

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Lets see here with 62,000 miles on the odometer if you could turn the speedometer with a drill so that the speedo indicated 150 mph it would only take 253 hours to run up the 38,000 miles to get back to zero. How many drills could survive 250 hours of continuois operation?
 

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boomerang opeler
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well im just shocked tht so many of our members would know how to roll back a speedo:D :D
i just wonder how many other semi and totaly illegal things we can do
we will all be posting pics of our quick keys and slide hammers next
gary can run a comp to see who can jimmy the latch ,pop the ignition barrel and hot wire a gt the fastest
we could set up a world championship for the quickest time
it would be a good time filler at the next carlisle or oms picnic

ps allways liked the hilti quick lock myself plug it in press the switch and watch it workout your key number then cut the key
 

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Yea, the drill thing really works. Right-turning drill rolls back mileage. A left-turning drill runs it forward.

Take an 1/8 bit file a square end on the chuck side; put the bit in the drill cutting edge in, and roll away. forwards or backwards: take the shortest path.

If you pull the odometer apart, it's like a Rubicks (SP?) cube.

That'll keep you busy for a few nights. I'd do the drill thing unless I wanted to clean and lube it at the same time.

JJ
 

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What's a Nopel?
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Just Be Careful!

Since my speedometer was bouncing a bit, I decided to put in a new one.

I was using the drill method to roll the odometer back to match the mileage that I had on the original. Since it was taking a bit longer than I expected, I thought I had a great idea to use my dremel to turn the numbers faster.

Due to the speed of the dremel, within seconds, the plastic numbers of the odometer broke apart & I had plastic odometer pieces scattered all over my kitchen.
 

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Senior Contributor
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Not that I know anything illegal, but! Instead of using a drill (noisey things anyhow), use a plain house fan. Take the fan off and clamp a short rubber hose on to it w/ a piece of speedo cable clamped in it in the other end. Lay them down together using a big rubber band to keep them snug with a couple of books for braces. Start off at slow speed and then speed it up till your comfy.
:p
 

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70's Opeler, back 4 more!
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I knew a guy in high school, twenty-some years ago, that brought his motorcycle's speedometer into wood shop. He hooked it up to the drillpress and let it run for the whole hour while he was working on his shop project. A week or so and he had the mileage he wanted and his project was looking pretty good.

I know it rolled the mileage back, but I'm not sure why he wanted to as his bike was a dirt bike and a piece of junk at that.

I know in Kansas, cars past a certain age are mileage exempt, and my GT falls into that catagory. So, I don't know that I'd worry too much of the legality of it since there are speedometer swaps going on to keep them working.
 
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