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The Terminator
Terminator Talk
Compression Test results
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<blockquote data-quote="Jimmysidecarr" data-source="post: 3222730" data-attributes="member: 11681"><p>Sorry to hear that... <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite3" alt=":(" title="Frown :(" loading="lazy" data-shortname=":(" /> </p><p></p><p>The combo of tight pistons(.001"piston to wall) and less than spectacular head cooling... unfortunately rears it's ugly head in the form of detonation super heated, and over expanded pistons...</p><p></p><p>Quite often they will grow right out into the wall... and nearly seize... sometimes when the piston gets yanked down in the bore, the top ring and ring land will get pulled right off the piston :uh oh: </p><p></p><p>This is why beyond a certain power threshold(unknown and variable)... cooling mods are recommended by me and others...</p><p></p><p>If we had even .002" piston to wall we wouldn't see half of these piston failures...</p><p></p><p>I hope the bores are not too bad and that the rebuild will be reasonably priced.</p><p></p><p>Good luck with it...</p></blockquote><p></p>
[QUOTE="Jimmysidecarr, post: 3222730, member: 11681"] Sorry to hear that... :( The combo of tight pistons(.001"piston to wall) and less than spectacular head cooling... unfortunately rears it's ugly head in the form of detonation super heated, and over expanded pistons... Quite often they will grow right out into the wall... and nearly seize... sometimes when the piston gets yanked down in the bore, the top ring and ring land will get pulled right off the piston :uh oh: This is why beyond a certain power threshold(unknown and variable)... cooling mods are recommended by me and others... If we had even .002" piston to wall we wouldn't see half of these piston failures... I hope the bores are not too bad and that the rebuild will be reasonably priced. Good luck with it... [/QUOTE]
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