Cmp c15a gs

[Bob Carriere]

I think Joel has a "Classic problem" with the temperature gauge.......

We have had the same problem at the barn.

Assuming I understand his temp. guage problem.

On the original 216 it has a large steel fitting that accommodates the steam tube to the front rad and on top a hole where the four sided fitting that holds the brass bubble tigth into the steel fitting and allows a temp reading for the gauge.

Well on rebuilt engines they don't usually come with that old style steel fitting and you have to use a modern brass fitting..... the problem is that modern temp guages do not have the same style tappered fitting and the old bubble and square nut/fitting form the CMP guages will not fit.....and modern after market temp guage will not fit the old style CMP steam fitting...... both Grant and I have had headaches on that one.

My solution was to fit a modern brass fitting into the head of the 261.... then a male/male fitting to a T brass fitting..... on side goes to the steam tube the top part accepts the brass fitting form the modern guage........ BUT what do I do when the origianl dash instrument guages cluster gets connected....?

I do have an original steel steam fitting that will fit the original CMP cab 11 cluster and may have to dismantle my temporary plumbers nightmare....

So my question is........ Joel.... do you have the original large size steel fitting that goes into the head of your modern 235.....?

Would pictures help ........?

Bottom line is if you want to use the original CMP temp guage.... whcih I assume is working and you tested it by dropping your guyage bulb in boiling water to see if the needle moves...... you will need and old fashion steel steam fitting....... it is the only thing that will fit on the old tappered surfaces of the guage brass bulb.......

Bob