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The Terminator
Engine/Tuning
Bad timing chain tensioner? Video inside
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<blockquote data-quote="speeddemon2000" data-source="post: 10863451" data-attributes="member: 14576"><p>FYI this is what Sean Hyland had to say about the tensioners in his book Mustang Builders Guide.</p><p></p><p>"The OEM timing components on the Cobra/Mach 1 have proven to be quite robust, even at 9,000 rpm, but a couple of things need to be noted. The chain tensioners used from 1996 until 2001 had a ratchet mechanism built in to self-adjust the tensioner for wear. When drag raced on sticky tires, the tensioners would over ratchet, cuasing premature front cam-journal wear. We have modified the tensioners to eliminate the ratchet mecahnism for drag racing, but kept it for street, open-track, or road racing. Since 2003, the factory has seen fit to update the tensioners and they have also eliminated the rachet mecahnism. They also changed the tensioner material from the original cast iron to a nylon-type material. We use the newer chain tensioner in street and drag cars, but we still use the old cast tensioners with the ratchet mechanism for all road-race and open track engines."</p></blockquote><p></p>
[QUOTE="speeddemon2000, post: 10863451, member: 14576"] FYI this is what Sean Hyland had to say about the tensioners in his book Mustang Builders Guide. "The OEM timing components on the Cobra/Mach 1 have proven to be quite robust, even at 9,000 rpm, but a couple of things need to be noted. The chain tensioners used from 1996 until 2001 had a ratchet mechanism built in to self-adjust the tensioner for wear. When drag raced on sticky tires, the tensioners would over ratchet, cuasing premature front cam-journal wear. We have modified the tensioners to eliminate the ratchet mecahnism for drag racing, but kept it for street, open-track, or road racing. Since 2003, the factory has seen fit to update the tensioners and they have also eliminated the rachet mecahnism. They also changed the tensioner material from the original cast iron to a nylon-type material. We use the newer chain tensioner in street and drag cars, but we still use the old cast tensioners with the ratchet mechanism for all road-race and open track engines." [/QUOTE]
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Bad timing chain tensioner? Video inside
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