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Cleaning Head Bolt Holes????

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Old Mar 18, 2002 | 10:07 AM
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Default Cleaning Head Bolt Holes????

Heard that one is supposed to ream/tap out the bolt holes to the block before installing new head bolts.

Does everybody do this?? Saw on JMX's site he cut a grove on the side of the old bolt and then ran it through all the holes. Just curious annd want to know if everybody odes this??

I know you absolutely MUST get all the water out.

TIA! Andy
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Old Mar 18, 2002 | 10:29 AM
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Default Re: Cleaning Head Bolt Holes????

Not necessary to ream/tap the block just to put new head bolts on. Use some of those extra long Q-Tips to help get all the water out. Blowing them out with an airgun doesn't get all the water out.

Tony
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Old Mar 18, 2002 | 10:36 AM
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Default Re: Cleaning Head Bolt Holes????

<img src="http://communities.msn.com/_Secure/0NAAAAPgQh6WAQyusDSi8K7Zd2yOIOD2zKtfvYU6zLpaQcou6f ALMmsPtJ1xm1mRCSPj7qM92vaISjW!X29hXRw/Pict00250.JPG" alt="" />
This is my head bolt liposuction machine! I took a shop vac. and a rubber hose taped them together then added a small piece of brake line to the end. This worked great to suck out ALL of the water and debris from the head bolt holes.
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Old Mar 18, 2002 | 11:07 AM
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Default Re: Cleaning Head Bolt Holes????

The problem is that if you dont get the chunky threadlock stuff out of the threads, you may feel the head bolt almost seize up when you put the new one in.

Rumor has it MTI removes the GM threadlocker that comes pre-applied to the bolts before they put them in, and on my most recent head swap I've been tempted to do the same. The stuff almost turns into a sand type substance and really screws with the bolt.

It takes 5 minutes with a dremmel to make a cleaning bolt. I just do it to make the new bolt install easier, but its definitly not something that *must* be done.
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Old Mar 18, 2002 | 11:33 AM
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Default Re: Cleaning Head Bolt Holes????

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by jmX:
<strong>The problem is that if you dont get the chunky threadlock stuff out of the threads, you may feel the head bolt almost seize up when you put the new one in.

Rumor has it MTI removes the GM threadlocker that comes pre-applied to the bolts before they put them in, and on my most recent head swap I've been tempted to do the same. The stuff almost turns into a sand type substance and really screws with the bolt.

It takes 5 minutes with a dremmel to make a cleaning bolt. I just do it to make the new bolt install easier, but its definitly not something that *must* be done.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Thanks for the info! BTW your right ups on mods for the Camaro are great! Very thorough and informative. Been a great help.
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