[Zmagnette] Engine Clatter & pressure drop

Richard Greenberg greenberg at lpl.arizona.edu
Mon Nov 11 17:36:54 MST 2013

Still plenty of oil.  After I stopped, I restarted the engine to drive it slowly a few hundred feet to a safe spot off the highway.  The engine has never been rebuilt to my knowledge, but who knows its history? I have owned it about 15 years. It has always run fine, although not super peppy.  

If it proves to be a bearing, does one just fix the offending bearing, or is it a sign that everything is about to need redoing?

I haven't had time to look at the rockers or the bearings.


On Nov 11, 2013, at 5:25 PM, Steven Trovato wrote:

> Rick,
> I think you have to investigate the problem before you can decide on a course of action.  Sorry for stating the obvious, but there is still  plenty of oil in there, right?  If something failed causing all the oil to pour out on that hill, you would have a sudden drop in oil pressure and a whole lot of clatter.  What is the state of this engine?  Recent rebuild or old and tired?
> -Steve T.
> At 06:40 PM 11/11/2013, Richard Greenberg wrote:
>> Hi all,
>>      This is about my TD, but I bet you folks can help.
>>      I decided to drive the TD, instead of my Magnette, to our British car club's annual BBQ.  About 25 miles out, running at about 50 mph uphill but not too hot, the engine started clattering and the oil pressure suddenly dropped to about 5 psi.  I had the poor car carried home.
>>      Any ideas about what happened? Rod bearing wiped out? Broken rocker arm?
>>      If it is one of those things, should I just make the repair, or is it time to have the whole engine rejuvenated?
>> Thanks,
>> Rick
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