Hold On

I am installing a digital temp guage to replace the never working stock unit in my 83S

I would like to put the new gauge sender in the same location on the water bridge as the original. Of course they are two different threads.

The new sender is 1/8 - 27 NPT male and the water bridge is ????? metric

Any help on an adapter for this project would be appreciated.Thanks

Hold On

Just in case anyone ever needs to know. The threads on the temp sender hole at water bridge are a M14-1.5 Now to try and find an adapter. hmmm

sydneyman

Thanks for the follow up! Im looking at adding an aftermarket vdo temp gauge for my '85. Hopefully the thread and pitch is the same for my car as well.

scottpeterd

Funny this thread should come up today.

Just researching adapters to test the pressures on my mercedes 722 transmission.


Cheers

jpitman2

There are other sensors on some engines with M14x1.5 threads, some with blind ends. Get one of the cheap or dead, remove the guts, drill and tap 1/8 NPT and you are good. I did this to adapt a 924 sensor (M10x1) into the half hot sensor for Kjet on the heater outlet on the RHS head.

Whats the difference between 1/8 NPT and 1/8 BSP threads? One is 27tpi, one is 28tpi. Nuts.

jp 83 Euro S AT 56k

jwyatt8171

Great idea jpitman2.

jpitman2

Note that the wheel nuts/lug nuts are M14x1.5.

jp 83 Euro S AT 56k

hacker-pschorr

Be careful that your adapter doesn't sit the sensor up too high. I had an issue with another car where the adapter raised up the sensor about 1/4" and this was enough to cause an air pocket and give wonky readings.

GlenL

Why not drill and tap a new hole?

Hold On

Because the water jacket hole is already larger than the sender unit.

GlenL

I mean an entirely new hole.