[Healeys] Off comes the head...Update

Michael MacLean rrengineer.mike at att.net
Sat Feb 11 00:44:16 MST 2017

You don't want to coat the water jacket with anything.  You don't need anything impeding the heat transfer of antifreeze making direct contact to the water jacket surface.Mike MacLean



 On Friday, February 10, 2017 7:06 PM, Bruce Steele <healeybruce at roadrunner.com> wrote:

 #yiv0738400708 #yiv0738400708 -- filtered {font-family:Helvetica;panose-1:2 11 6 4 2 2 2 2 2 4;}#yiv0738400708 filtered {panose-1:2 4 5 3 5 4 6 3 2 4;}#yiv0738400708 filtered {font-family:Calibri;panose-1:2 15 5 2 2 2 4 3 2 4;}#yiv0738400708 filtered {panose-1:2 11 6 3 2 2 2 2 2 4;}#yiv0738400708 p.yiv0738400708MsoNormal, #yiv0738400708 li.yiv0738400708MsoNormal, #yiv0738400708 div.yiv0738400708MsoNormal {margin:0in;margin-bottom:.0001pt;font-size:11.0pt;}#yiv0738400708 a:link, #yiv0738400708 span.yiv0738400708MsoHyperlink {color:#0563C1;text-decoration:underline;}#yiv0738400708 a:visited, #yiv0738400708 span.yiv0738400708MsoHyperlinkFollowed {color:#954F72;text-decoration:underline;}#yiv0738400708 span.yiv0738400708EmailStyle17 {color:windowtext;}#yiv0738400708 span.yiv0738400708EmailStyle18 {color:windowtext;font-weight:normal;font-style:normal;}#yiv0738400708 .yiv0738400708MsoChpDefault {font-size:10.0pt;}#yiv0738400708 filtered {margin:1.0in 1.0in 1.0in 1.0in;}#yiv0738400708 div.yiv0738400708WordSection1 {}#yiv0738400708 So, the machine shop has gone through my block and low and behold, oil is not seeping from the transverse oil gallery into the water jacket.  They pressurized the oil gallery to 70 PSI and it help pressure; nothing bleed into the water jacket.  Rather, the shop cooked out a bag full of sludge from the water jacket in the back of the block.  Apparently, the regular hot tank dipping before didn’t dislodge all this gunk, and the circulating coolant would dissolve just enough to foul the coolant with the oily mess that sure looked like fresh motor oil mixing with the coolant.  Fooled me, for sure.  For good measure, we will coat the water jacket with some epoxy, then rebuild the motor with Denis Welch pistons, street cam, bucket lifters, hollow push rods and fly wheel.  I am excited to experience how it will run with the new DW parts to go with my DW oil pump I installed years ago.  Bruce SteeleBrea, CA1960 BN7  From: Bruce Steele [mailto:healeybruce at roadrunner.com] 
Sent: Thursday, November 24, 2016 10:15 PM
To: 'Healey List' <healeys at autox.team.net>
Subject: Off comes the head...  Finally diving in to diagnose and fix the oil in the coolant. Hoping it's just the head gasket, but since it started after the engine was done 11 years ago, I am suspicious that it's the oil gallery-water jacket wall between number 4 and 5 cylinders seeping high pressure oil into the coolant. Has anyone actually had or known anyone with this problem?  Bruce SteeleBrea, CA1960 BN7  
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