W123 Speedometer Upgrade
W123 Speedometer Upgrade
04-15-2014, 03:36 AM
#8
(04-14-2014, 06:05 PM)Greazzer(05-17-2010, 12:14 PM)DeliveryValve(05-17-2010, 11:45 AM)GREASY_BEAST Thanks Forced. After doing some reading on other forums, it appears that the 1985 300SD also had an electronic speedometer. However, I'm not sure whether the speedometer from the W116 fits in the W123 cluster. Anyone ever tried? If it doesn't I might as well just go to the yard and get whichever late-model MB electronic speedometer I can lay my hands on, because adapting is adapting.
Actually all w126's have the electronic speedo.
The w116 speedo head will not fit in the w123 cluster without major modification.
So late model adapting might be the way to go if your looking for an electronic option.
.
Richard,
If I got the M100 6.9 instruement cluster, how much of a PITA factor is it to use the W116 speedo in a W123 ???
It's been a while since I compared them, you would have to physically see the differences.
But if I recall the w116 speedometer's face is much bigger than the w123's. So I am not even sure how you would go about shoe horning it in a w123 cluster housing. If you decide to try to swap mechanical parts between the clusters, I do know the worm gears will not work because the w116's gears are longer and teeth are placed differently. Magnet and cable tail orientation are different. Not sure if you can swap the whole mechanism to a different face plate, because the ODO numbers may not line up as well as getting the needle to show the correct speed.
On top of that, the 6.9 came with larger outer diameter 215 70 R14 tires compared to the w123 which came with smaller outer diameter 195 70 R14 tires. So you'll need to sort out the tire choices also.
So the reality is I think a w116 speedo will not be doable.
Gota love Mercedes Diesels!
.
DeliveryValve
04-15-2014, 03:36 AM #8(04-14-2014, 06:05 PM)Greazzer(05-17-2010, 12:14 PM)DeliveryValve(05-17-2010, 11:45 AM)GREASY_BEAST Thanks Forced. After doing some reading on other forums, it appears that the 1985 300SD also had an electronic speedometer. However, I'm not sure whether the speedometer from the W116 fits in the W123 cluster. Anyone ever tried? If it doesn't I might as well just go to the yard and get whichever late-model MB electronic speedometer I can lay my hands on, because adapting is adapting.
Actually all w126's have the electronic speedo.
The w116 speedo head will not fit in the w123 cluster without major modification.
So late model adapting might be the way to go if your looking for an electronic option.
.
Richard,
If I got the M100 6.9 instruement cluster, how much of a PITA factor is it to use the W116 speedo in a W123 ???
It's been a while since I compared them, you would have to physically see the differences.
But if I recall the w116 speedometer's face is much bigger than the w123's. So I am not even sure how you would go about shoe horning it in a w123 cluster housing. If you decide to try to swap mechanical parts between the clusters, I do know the worm gears will not work because the w116's gears are longer and teeth are placed differently. Magnet and cable tail orientation are different. Not sure if you can swap the whole mechanism to a different face plate, because the ODO numbers may not line up as well as getting the needle to show the correct speed.
On top of that, the 6.9 came with larger outer diameter 215 70 R14 tires compared to the w123 which came with smaller outer diameter 195 70 R14 tires. So you'll need to sort out the tire choices also.
So the reality is I think a w116 speedo will not be doable.
Gota love Mercedes Diesels!
.
Messages In This Thread
W123 Speedometer Upgrade - by GREASY_BEAST - 05-17-2010, 08:32 AM
RE: W123 Speedometer Upgrade - by ForcedInduction - 05-17-2010, 08:59 AM
RE: W123 Speedometer Upgrade - by GREASY_BEAST - 05-17-2010, 11:45 AM
RE: W123 Speedometer Upgrade - by DeliveryValve - 05-17-2010, 12:14 PM
RE: W123 Speedometer Upgrade - by Greazzer - 04-14-2014, 06:05 PM
RE: W123 Speedometer Upgrade - by DeliveryValve - 04-15-2014, 03:36 AM
RE: W123 Speedometer Upgrade - by ForcedInduction - 05-17-2010, 05:43 PM
RE: W123 Speedometer Upgrade - by GREASY_BEAST - 05-18-2010, 05:20 PM
RE: W123 Speedometer Upgrade - by Petar - 08-18-2014, 05:01 PM
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