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New Edge Cobras
Started as a slight ticking sound... now VERY loud!!
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<blockquote data-quote="52merc" data-source="post: 16640556" data-attributes="member: 197"><p>Has anyone done some of the simple tests like a compression test? That is where I would start.</p><p></p><p>I'm not sure I would even spend $4000 on heads if I was racing and trying to make 1,000 hp.</p><p></p><p>It could be as simple as a bad lash adjuster (the proper name for a "lifter" in an overhead cam engine). If that is what it turns out to be, I would change all of them, just for the peace of mind, but you could only change the bad one.</p><p></p><p>A decent mechanic should be able to pretty quickly tell if it is a rod bearing or not.</p><p></p><p>There are a reasonable number of used 4V heads around that will fit you car, such as off a Navigator (certain years) that can usually be had for a decent price.</p><p></p><p>If you have a lift, one of the easiest ways to get the engine out is by dropping the engine with the k-member. It can be done without a lift, but you need to be able to jack the car up pretty high. It can also be pulled out through the top in a conventional manner.</p><p></p><p>You really need to have someone determine what the problem is, then it would be easier to give you some advice as to how to proceed.</p></blockquote><p></p>
[QUOTE="52merc, post: 16640556, member: 197"] Has anyone done some of the simple tests like a compression test? That is where I would start. I'm not sure I would even spend $4000 on heads if I was racing and trying to make 1,000 hp. It could be as simple as a bad lash adjuster (the proper name for a "lifter" in an overhead cam engine). If that is what it turns out to be, I would change all of them, just for the peace of mind, but you could only change the bad one. A decent mechanic should be able to pretty quickly tell if it is a rod bearing or not. There are a reasonable number of used 4V heads around that will fit you car, such as off a Navigator (certain years) that can usually be had for a decent price. If you have a lift, one of the easiest ways to get the engine out is by dropping the engine with the k-member. It can be done without a lift, but you need to be able to jack the car up pretty high. It can also be pulled out through the top in a conventional manner. You really need to have someone determine what the problem is, then it would be easier to give you some advice as to how to proceed. [/QUOTE]
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Started as a slight ticking sound... now VERY loud!!
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