Why the hole in the cap screw? - JeepForum.com
 
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post #1 of 7 Old 07-27-2011, 07:39 PM Thread Starter
Splinter
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Why the hole in the cap screw?

Just wondering why manifold bolts are hollow. Maybe to expand less????

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post #2 of 7 Old 07-27-2011, 08:39 PM
82JeepCJ7
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Are you talking the mounting bolts or 6 "bolts" that are screwed into the manifold?

Sounds to me like they are plugged injection tube nuts.

Beat it to fit, paint it to match!

Wheel, Wrench, Repeat.
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post #3 of 7 Old 07-27-2011, 08:43 PM
superj
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safety wire? what do you mean hollow? like the head has holes in the sides and the middle is empty also or the whole bolt is hollow? i think a hollow bolt would deform upon torquing

I don't feel like working on anything at this time so i sold my yj.
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post #4 of 7 Old 07-27-2011, 08:44 PM
MoC
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He is talking about exhaust manifold / header bolts, they have a hole in to the bolt shaft.

Dont know why though....

Under A Sun Thats See It All Before...
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post #5 of 7 Old 07-28-2011, 09:19 AM Thread Starter
Splinter
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Quote:
Originally Posted by MoC View Post
He is talking about exhaust manifold / header bolts, they have a hole in to the bolt shaft.

Dont know why though....
Ya sorry, I meant exhaust manifold mounting bolts. I had to replace a few OEM with standard bolts that don't have holes in the end.
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post #6 of 7 Old 07-28-2011, 12:01 PM
Cutlass327
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That's so they break off easier when doing a "quick" gasket replacement...

Is there anywhere to by a new set of bolts? or do I just use regular bolts? I'm about to do one of these "quick" gasket replacements, and they are looking rusty and weak. New bolts and dished washers would be nice to put back in, not bolts and flat washers or lock washers that never hold up to the heat and back out constantly..

Rick

1978 CJ5 5.0HO/T177/D300, '86 D30/D44 WT axles, 'glass body, 31x10.5 BFG A/T, TDK galv'd frame - DD and weekend toy


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post #7 of 7 Old 07-29-2011, 06:58 PM
baldfatdad
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Go to Stage8.com and check out their stuff.
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