What engine?

[1wonton]

My '63 B model has an engine with the number ENDLT 673C1Z2893;  What engine is this?

 

 

ron

[doubleclutchinweasel]

"EN" is for engine.

"D" is for diesel.

"L" is for the lightweight aluminum bell housing, I believe.

"T" is for turbocharged.

"C" is the particular revision.  This is, I think, the last version of this particular Thermodyne.

This is a 250HP, 700 ft-lb, turbocharged 672 cu. in. Thermodyne.

A very good engine.

[1wonton]

Thanks Double, appreciate the input.

 

 

ron

[doubleclutchinweasel]

On 9/7/2022 at 2:18 PM, 1wonton said:

Thanks Double, appreciate the input.

 

 

ron

The "C" was pretty common in later R, DM, U, and F models.  Don't think they were ever original in a B model. 

Here is a .PDF of some info on that engine.  The graph has the traditional signature of Mack engineer Win Pelizzoni on it.

endt673c.pdf

Edited September 13, 2022 by doubleclutchinweasel

[steve s.]

DC Weasel, I have a 1966 B61 that was built with a 673C engine. It has a rotary injection pump and a pressed steel intake manifold. There are many differences in this late production B model compared to earlier B's I have noticed. 

[doubleclutchinweasel]

46 minutes ago, steve s. said:

DC Weasel, I have a 1966 B61 that was built with a 673C engine. It has a rotary injection pump and a pressed steel intake manifold. There are many differences in this late production B model compared to earlier B's I have noticed. 

Cool.  I knew the "C" came out right around the end of the B's run.  Was not sure if any made it into the B.  I think the earliest one I personally saw was in a '66 or '67 R.  May have been some in the earlier U models, but I don't know.

That configuration on yours is different that I ever saw.  Can't be too many like yours.  A rare jewel to be sure.  I don't think they made all that many B's in '66 (last year).  Thanks for the info!