[Healeys] 4 Cylinder Woes, cont'd.

[Michael MacLean]

 Possibly a bent valve stem?Mike M

    On Tuesday, August 27, 2019, 11:31:44 AM PDT, Kees Oudesluijs <coudesluijs at chello.nl> wrote:  
 
  
If it is a burnt valve it is not wise to travel any long distance as you may damage the valve seat considerably if it has non hardened seat fitted and, as David Nock says a cracked head may be the result. It is unlikely to be rings/bore as the drop in compression is to big. 
 
 
What also could be checked easily is if the crank case ventilation blows considerably , if so it could be a hole in the piston but than again the compression would probably be lower than 25psi and a holed piston is not something that happens often. 
 
 
Burnt valves on UK cars are a regular occurrence. I have had them on the Spitfire, Land Rover and on the Jensen-Healey, never on the Italian, French, USA, German, Japanese or Korean cars I had/have but may be I was lucky there.
 
 

 
 
Kees Oudesluijs
 

 
 

 
 Op 27-8-2019 om 20:08 schreef David Nock:
  
 
  Steve, are you planning on driving the Healey to Deadwood.  If so I would not recommend to do that with a low compression. If it is a burnt valve then you will greatly increase the chances of cracking the head. If it is rings then you will use a lot of oil.   I would recommend a leak test right away. Then you can determine if the low compression is a valve problem or a ring problem.     David Nock
 healeydoc at sbcglobal.net
 209 948 8767
 www.britishcarspecialists.com
 
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       From: jim via Healeys  Sent: Tuesday, August 27, 2019 9:57 AM To: healeys at autox.team.net ; Steven Kingsbury  Subject: Re: [Healeys] 4 Cylinder Woes, cont'd.        So ...Have you done a "leak-down test" to confirm where (intake/exhaust/rings) the bad one is bad?   Jim
       On Tuesday, August 27, 2019, 3:02:14 AM UTC, Steven Kingsbury via Healeys <healeys at autox.team.net> wrote:         Cylinder #1   150 lbs Cylinder #2    25 lbs Cylinder #3   155lbs Cylinder #4   150 lbs   Steven Kingsbury BN1 kind of   _______________________________________________
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