[TR] Subject: Engineer Question again!

[Catpusher at aol.com]

Terry,
 
The piston weight and compression height do matter, and the higher the  
revs, the greater the problems.  Crank failure is a possibility at  very high 
RPM with one piston being  quite different  in weight/deck height/piston ring 
sealing.  Perhaps you want to check  the snap rings in the other pistons 
whilst you are in there and, think of doing  the project "correctly".  It has 
been a years since my TR3 was in NH!
 
TR Regards,
 
Hardy
 
 
In a message dated 4/21/2014 11:01:18 A.M. Pacific Daylight Time,  
triumphs-request at autox.team.net writes:

From:  terryrs at comcast.net
To: triumphs at autox.team.net
Subject: [TR] Engineer  Question again!
Message-ID:
<1465433574.1196818.1398035701340.JavaMail.root at sz0059a.westchester.pa.mail.
comcast.net>

Content-Type: text/plain; charset=utf-8

Okay.  Traced  the source of my overheating engine.  When I pulled the 
head, there are  two gouges on opposite sides of #2 cylinder.  Suspect the wrist 
pin  wasn't secured by the snap-rings well enough.

So, I happen to have a  liner and piston that came out of an old engine.  
Would there be some odd  harmonic imbalance if I were to use three pistons of 
one type and a fourth of  a different type?  ...In other words, do I need 
to yank all four pistons  and liners and repace them with a matched  set?