[TR] TR3 Broken Head Stud

bill_beecher at flash.net bill_beecher at flash.net
Sat Sep 25 09:07:52 MDT 2010


List,
Well, a few months ago I had written about the mysterious appearance of
coolant on the underside of the bonnet, where most normal radiator and hose
leaks should NOT deposit coolant.  Careful inspection yielded that I was
still using the wrong radiator cap (3/4" instead of 1" depth).  Fixed that
and had an awesome summer of driving, although I still noticed only a slight
amount still appearing, it was insignificant enough that I determined that I
would leave it for winter to pressurize and resolve finally.

Well, now I know!  As I was preparing to head to a club event this morning
and dutifully dusting off old Tarbaby for a fun 100 miler I noticed an
inverted dent on the bonnet.   Severely admonishing myself for leaving
something on the motor and closing the lid I opened her up and there was 1/2
of the front stud laying on the manifold, and the hole was full with nice
clean coolant.  So, I have now resolved finding the minor problem that I had
by discovering a major problem.

My questions are these:
-What is the procedure to replace a stud?  
-Can it be done 'in situ'?  
-As there was coolant in the hole, and most likely before today, do look for
another problem or is there supposed to be coolant in the stud holes?  
-Head gasket?
-I have some extra studs from another, newer engine, should I use one of
them or buy new?  (Sourcing recommendations appreciated)

Many thanks in advance.....

Bill


Bill Beecher
'58 TR-3A TS30766L  "Tarbaby"
www.triumphowners.com/1566
"A Triumph is man's best friend, it always comes when it is called...of
course, some times it is difficult to make it go"


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