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SN95 Cobras
Broken crank bolt extraction
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<blockquote data-quote="95PGTTech" data-source="post: 13655423" data-attributes="member: 55701"><p>Another thought as to why this is a bad idea:</p><p></p><p>Even if this does work out the way you are envisioning it (and from the above picture, it has gone south quick), you are going to need to remove a significant amount of material from the crank snout, which is already low on real estate as it is. Keep in mind this is the main power takeoff for the engine - all other accessories are driven off of it and it sees the highest torque/load/stress of any of them.</p><p></p><p>Even for someone who does not do this professionally, from what you showed here mechanically, jack the front of the car up on jack stands. Remove the K member after supporting engine. Remove the trans. Drop the oil pan, remove the mains and the caps from the rods. Bag and label everything for your piece of mind. Where it came from and what orientation. Purchase a used crankshaft and take it to a machine shop to be inspected to see if it needs turn. Purchase your bearings (main and rod) from that point. Put everything back where you found it, and do some other little nitty gritty stuff while you have everything apart to make yourself feel accomplished/improved.</p><p></p><p>Total labor you will be waiting on the machine shop far longer than doing any actual car work. Know when to hold em, know when to fold em. Know when to walk away, know when to run.</p></blockquote><p></p>
[QUOTE="95PGTTech, post: 13655423, member: 55701"] Another thought as to why this is a bad idea: Even if this does work out the way you are envisioning it (and from the above picture, it has gone south quick), you are going to need to remove a significant amount of material from the crank snout, which is already low on real estate as it is. Keep in mind this is the main power takeoff for the engine - all other accessories are driven off of it and it sees the highest torque/load/stress of any of them. Even for someone who does not do this professionally, from what you showed here mechanically, jack the front of the car up on jack stands. Remove the K member after supporting engine. Remove the trans. Drop the oil pan, remove the mains and the caps from the rods. Bag and label everything for your piece of mind. Where it came from and what orientation. Purchase a used crankshaft and take it to a machine shop to be inspected to see if it needs turn. Purchase your bearings (main and rod) from that point. Put everything back where you found it, and do some other little nitty gritty stuff while you have everything apart to make yourself feel accomplished/improved. Total labor you will be waiting on the machine shop far longer than doing any actual car work. Know when to hold em, know when to fold em. Know when to walk away, know when to run. [/QUOTE]
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Broken crank bolt extraction
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