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2001 eldorado,2008 DTS,2005 XLR, '96 eldo,'95 eldo,' 89 eldo,'78 eldo,'11CTS-V
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1,777 Posts
Discussion Starter #1
When doing the Timesert routine, I have to remove the steel dowels from the block (that locate the head) in order to place the jig for the tapping/drilling operation. Instead of going to the Cadillac store and shelling out $20 for the four dowels, I'm thinking of using short pieces of copper pipe. 1/2" copper pipe is VERY close to the dia. of those dowels, but slightly smaller.
Makes me wonder what the purpose of those dowels is. Is it just to keep the head in position for the bolting process? Could this work? Comments, please.
Anyone have luck with the drilling/tapping with the dowels in place?
 

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1997 Eldorado, 2003 Audi RS6
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1,320 Posts
If the head is misaligned by a very very small amount, your head gasket will most likely not last long. When you say very close, do you mean there is play that you can feel? If so, it will not work. Copper also has different properties and may produce either electrochemical reactions or expand/contract at a different rate than the aluminum, making the problem even worse. Don't get cheap about this.
 

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2006 STS 1SG AWD, 1997 Concours Deville (sold)
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Do You Need To Remove The Dowels If Using Norm's Inserts?

Yes. Norm's 5/8 tap is larger (.631" dia.) than the dowel OD (.616" dia.). You don't need oversize dowels though. Most of the original pilot hole for the dowel remains after the threading operation. The tap just puts a small spiral groove in it. After tapping, just press standard dowels back in.
 

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1997 Eldorado, 2003 Audi RS6
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1,320 Posts
Do You Need To Remove The Dowels If Using Norm's Inserts?
Why do you feel the need to capitalize every word? :tisk:

What is it with people who can't write? All caps, commas every fifth word, capitalizing every word, no punctuation, the list goes on! You people are old enough to drive and supposedly intelligent enough to attempt to carry out modification or repair on your vehicles and a decent number of you can't even write at a sixth grade level!
 

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White Diamond '03 DHS (with DTS floor shift)
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86,978 Posts
Why do you feel the need to capitalize every word? :tisk:

What is it with people who can't write? All caps, commas every fifth word, capitalizing every word, no punctuation, the list goes on! You people are old enough to drive and supposedly intelligent enough to attempt to carry out modification or repair on your vehicles and a decent number of you can't even write at a sixth grade level!
Zorb, they are not all caps on my screen. :hmm:
 

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The Northstar Tuner
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2,759 Posts
Why do you feel the need to capitalize every word? :tisk:

What is it with people who can't write? All caps, commas every fifth word, capitalizing every word, no punctuation, the list goes on! You people are old enough to drive and supposedly intelligent enough to attempt to carry out modification or repair on your vehicles and a decent number of you can't even write at a sixth grade level!
My mom was a Literature major. I heard how to speak all my life. I still can't spell and use the incorrect puntuation all the time.
When I am on the Phone and answer a question with the word Correct instaed of yes, right, or yeah. The people get confused. Should I turn left. Right.
 
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