<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content="text/html; charset=us-ascii" http-equiv=Content-Type>
<META name=GENERATOR content="MSHTML 11.00.10570.1001"></HEAD>
<BODY>
<DIV><SPAN class=885012718-19112017><FONT size=2 face=Arial>I would like advise
and comments about the pros and cons of partially filling the water jacket with
engine block filler on a Healey 3000 engine. For those who have not aware of
this process here is a website for one the products:</FONT></SPAN></DIV>
<DIV><SPAN class=885012718-19112017><FONT size=2
face=Arial></FONT></SPAN> </DIV>
<DIV><SPAN class=885012718-19112017><FONT size=2 face=Arial><A
href="http://www.hardblok.com/">http://www.hardblok.com/</A></FONT></SPAN></DIV>
<DIV><SPAN class=885012718-19112017><FONT size=2
face=Arial></FONT></SPAN> </DIV>
<DIV><SPAN class=885012718-19112017><FONT size=2 face=Arial>The engine I have
was sitting idle for 35 years without draining any of the coolant and I am
concerned corrosion may have reduced the material thickness between the oil
gallery and the water jacket. I am contemplating filling the block to just below
the frost plugs primarily to reduce the chance engine oil under pressure can
migrate through porous parts of the block and into the cooling water
jacket.</FONT></SPAN></DIV>
<DIV><SPAN class=885012718-19112017><FONT size=2
face=Arial></FONT></SPAN> </DIV>
<DIV><SPAN class=885012718-19112017><FONT size=2
face=Arial>Pros</FONT></SPAN></DIV>
<DIV><SPAN class=885012718-19112017><FONT size=2 face=Arial>Second barrier
between oil gallery and water jacket</FONT></SPAN></DIV>
<DIV><SPAN class=885012718-19112017><FONT size=2 face=Arial>Stiffens the bottom
of the piston sleeves</FONT></SPAN></DIV>
<DIV><SPAN class=885012718-19112017><FONT size=2 face=Arial>Keeps cylinders
walls from flexing</FONT></SPAN></DIV>
<DIV><SPAN class=885012718-19112017><FONT size=2 face=Arial>Reduces blow by and
piston wear</FONT></SPAN></DIV>
<DIV><SPAN class=885012718-19112017><FONT size=2
face=Arial></FONT></SPAN> </DIV>
<DIV><SPAN class=885012718-19112017><FONT size=2
face=Arial>Cons</FONT></SPAN></DIV>
<DIV><SPAN class=885012718-19112017><FONT size=2 face=Arial>Reduces coolant
volume</FONT></SPAN></DIV>
<DIV><SPAN class=885012718-19112017><FONT size=2 face=Arial>Reduces contact area
between piston sleeves and water jacket</FONT></SPAN></DIV>
<DIV><SPAN class=885012718-19112017><FONT size=2 face=Arial>Cannot be
removed</FONT></SPAN></DIV>
<DIV><SPAN class=885012718-19112017><FONT size=2
face=Arial></FONT></SPAN> </DIV>
<DIV><SPAN class=885012718-19112017><FONT size=2 face=Arial>There is no going
back if I decide to do this and I am wondering if the risk is worth the
reward.</FONT></SPAN></DIV>
<DIV><SPAN class=885012718-19112017><FONT size=2
face=Arial></FONT></SPAN> </DIV>
<DIV><SPAN class=885012718-19112017><FONT size=2 face=Arial>Your comments are
appreciated.</FONT></SPAN></DIV>
<DIV><SPAN class=885012718-19112017><FONT size=2
face=Arial></FONT></SPAN> </DIV>
<DIV><SPAN class=885012718-19112017><FONT size=2
face=Arial>Harold</FONT></SPAN></DIV>
<DIV><SPAN class=885012718-19112017><FONT size=2
face=Arial></FONT></SPAN> </DIV>
<DIV><SPAN class=885012718-19112017><FONT size=2
face=Arial></FONT></SPAN> </DIV></BODY></HTML>