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I'm looking for somebody who can tell me where to get a replacement valve cover bolt. Are they just standard size bolts I can find at a hardware store? None of auto parts stores around here have any information on them oh, much less any in stock. I need to at least know the size of the bolt so I can get thread repair inserts, since I stripped out two of the holes putting the valve covers back on yesterday. Stupid me didn't pay attention to inch pounds vs foot pounds,so I quickly stripped out to of the holes and then snapped the third bolt. I have a hunch that the car is on its last legs anyway, so I'm tempted to just make this the last straw that sends it to the graveyard.
 

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Woober Goobers!
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What year car and what engine?
 

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Woober Goobers!
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Here's the Mopar part.

https://www.moparpartsgiant.com/parts/dodge-screw~6502343.html

From the parts catalog it's:

06502343 16 EGE SCREW, Hex Head, M6x1x17,
Cylinder Head Cover Attaching

So an Metric M6x1 thread pitch that's 17mm long. The M6x1 is the important part for your Heli-Coil sizing. Are you sure there's enough material on the cylinder head to be able to drill/tap for a heli-coil?
 
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Woober Goobers!
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Better check with a parts store. I can't really help you with that decision.
 

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hmmm well if it were mine id probly just drill new hole and tap thread it for a new bolt. or just extra seal it with more extra lots of gasket maker sdealer adhesive,

drill out with whatever size and thread that will fit and work for holding down the rocker or cam cover, or whatever it is tecnhiclaly called or what is it covering underneath it, haha. or a reverse extractor bit and pull it out.
if the material that the snapped off stud or bolt is in is aluminum, then it could be really easy/simple/quick,. but cast iron is not as tough as steel so even if it is cast iron it stil wont bne too bad., the bolt grade may be harder than the strength hardness of the bolt stuck in the hole broken off so thats the fun tricky PITA part, is drilling withotu gouing off track crooked off-center etc,. in this case you would ened a really tough strong high quality bit. at least carbide-tipped. not a cheap chinese junky one tht wil just dull or burn uop in 2 seconds,. or evne break, because if the bit end snaps off in the bolt youre driling out, in the hole then youre in more trouble then you even want to dream of.. slow and careful and keep it cool, do in steps, short burst times of drilling and then let cool, repeat, until drilled, a reverse bit stud remover may work wonders and be a savior. and is often, in these situations, unless it is thread damaged badly, or is
severely rusted corroded in the hole.

drilling out bolts studs and tapping threading etc is never fun at all, no matter who you are


if its just one of the bolts, anmybe you canm get away with extra gasket maker silicone. sealer etc and not need to fix repair replace bolt stud that broke off. i have one i never drileld out replaced in my water pump timing cover housing when a couple snapped off on me..,. i just sealed it extra good with lots of good gasket-maker adhesive sealer and its always been fine even under 15 or more PSI . this been years ago and still no leak at all, nothing,
 
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