I've never done this myself on a TR head, but the way I used to do it
for motorcycles was to drill the guide with a slightly larger drill
until it was flush with the head, then heat the head to about 300
degrees in an oven and drift out the guides with a stepped drift. Of
course these are small heads and they are aluminum.
On Jan 24, 2008, at 5:19 AM, Gt6steve@aol.com wrote:
> Safest way is to drill them to a size near 1/2" and then collapse
> them.
> Driving them introduces a slight risk of dragging the hole. Most
> likely you can
> lube them with your favorite penetrant and drive them out.
>
>
>
> **************Start the year off right. Easy ways to stay in shape.
> http://body.aol.com/fitness/winter-exercise?NCID=aolcmp00300000002489
> _______________________________________________
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Bill Babcock
Babcock & Jenkins
Billb@bnj.com
503.936.7660
www.bnj.com
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