<VV> valve guides

[tony underwood]

I've used a torch to heat up the aluminum around the guide from inside 
the valve pocket port where you can get the aluminum hot quickly without 
heating (swelling) the guide itself, then flip the head over and a quick 
solid rap with a small hammer will pop the guide out without removing 
any metal from the head.   I never had any trouble getting a guide out 
this way.  Same way with removing a blower fan bearing, heat the 
aluminum quickly then a sharp rap with a smaller hammer will pop it out, 
no argument.


Use a flat face punch on the blower bearing shaft... :-)


tony..  too lazy to drill the guide first


On 11/4/2024 10:28 AM, Mike Stillwell via VirtualVairs wrote:
> I like the drill out the center some, to decrease the pressure on the surrounding aluminum, then heat them up and drive out the rest.
>
> Mike
> YS-117
>
> Sent from my iPhone
>
>> On Nov 4, 2024, at 6:50 AM, Mark Plucenik via VirtualVairs <virtualvairs at corvair.org> wrote:
>>
>> Im getting ready to get the heads done on a set of 140 heads.  Looking for
>> your opinions on weather to drive the old valve guides  out at room
>> temperature or to heat them up to maybe 350 before I drive them out? I've
>> already cleaned them up so heating them up in a gas grill wont be a mess.
>>
>>
>>
>>
>>
>> Thanks, Mark Plucenik
>>
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