Well I have been proven wrong yet again...
(Not surprising!)
I have 3 - 67 speedo heads and 4 - 68 up speedo heads.
I'm preparing to have 2 of the 67 speedo heads repaired.
In the process I am identifying parts on the 68 up that are better than on the 67s.
The face plate from one and the 1/10 odometer wheel from another.
I noticed a part not on the 3-67s or on 2 of the 68s
There is an eccentric cam and a metal follower on the driver's side of the odometer.
I had heard that the odometer gets marked when it passed 100,000 miles but had never seen it on my 67 which has gone around 3 times.
Well there it is.
Eccentric
Metal follower / scraper
Damaged "9"
If you have your cluster out and your odometer has not passed 100,000 miles (the 9 looks good)
I would drill out the pop rivet and remove the metal follower (use EXTREME caution that the metal chips are prevented from getting into the workings of the speedo) alternately you could probably bend the metal follower so it can not make contact with the 90,000 wheel or snip it off.
As part of this speedo will be donated to my 2nd 67 speedo I decided to test out my advice for disabling the scraper.
First I tried to bend the scraper arm down, it might work but there is a tab on the arm that interlocks with the 90,000 odometer wheel and makes bending it truly out of the way complicated.
I did not get a photo
Next I tried to snip it off, that proved to be the easiest and cleanest method.
Then I drilled out the pop rivet. And of course the pop rivet is steel, so magnetic shavings EVERYWHERE! Hole left from the pop rivet in red
This is what the scraper looks like
This is the scraper arm cut off
There are 2 tabs on the part of the scraper that is still pop riveted on so it can not rotate and cause issues
Just found another difference...
The needle stop on 67 is on the "bell"
68 is on the face
But one of the press on 68s has the needle stop on the "bell"?
And another 68 has the stop on the "bell" BUT the metal that is bent down to catch it is not a part of the speedo bracket?
(Not surprising!)
I have 3 - 67 speedo heads and 4 - 68 up speedo heads.
I'm preparing to have 2 of the 67 speedo heads repaired.
In the process I am identifying parts on the 68 up that are better than on the 67s.
The face plate from one and the 1/10 odometer wheel from another.
I noticed a part not on the 3-67s or on 2 of the 68s
There is an eccentric cam and a metal follower on the driver's side of the odometer.
I had heard that the odometer gets marked when it passed 100,000 miles but had never seen it on my 67 which has gone around 3 times.
Well there it is.
Eccentric
Metal follower / scraper
Damaged "9"
If you have your cluster out and your odometer has not passed 100,000 miles (the 9 looks good)
I would drill out the pop rivet and remove the metal follower (use EXTREME caution that the metal chips are prevented from getting into the workings of the speedo) alternately you could probably bend the metal follower so it can not make contact with the 90,000 wheel or snip it off.
As part of this speedo will be donated to my 2nd 67 speedo I decided to test out my advice for disabling the scraper.
First I tried to bend the scraper arm down, it might work but there is a tab on the arm that interlocks with the 90,000 odometer wheel and makes bending it truly out of the way complicated.
I did not get a photo
Next I tried to snip it off, that proved to be the easiest and cleanest method.
Then I drilled out the pop rivet. And of course the pop rivet is steel, so magnetic shavings EVERYWHERE! Hole left from the pop rivet in red
This is what the scraper looks like
This is the scraper arm cut off
There are 2 tabs on the part of the scraper that is still pop riveted on so it can not rotate and cause issues
Just found another difference...
The needle stop on 67 is on the "bell"
68 is on the face
But one of the press on 68s has the needle stop on the "bell"?
And another 68 has the stop on the "bell" BUT the metal that is bent down to catch it is not a part of the speedo bracket?
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