[6pack] Cylinder Head Bolts

[Richard]

Yes, if the threads are decent they can be revived by making this "tool". 
The 7/16x20tpi tap and die is usually included in a set as sold by Sears and others. 
Dick 

> On Jun 14, 2021, at 8:00 PM, rmf3860 rmf3860 <bobfabie at gmail.com> wrote:
> 
> Gents.
> 
> Thank you Dick, Janet, Richard, and Alex for responding. I assumed, incorrectly, that the bolt was a 7/16 -24,  but I’ve been informed it’s 7/16-20. I’ve also been taught how to make a thread cleaning “tap”. 
> 
> Thanks to all. 
> 
> Bob
> 
>> On Mon, Jun 14, 2021 at 7:53 PM Alex & Janet Thomson <aljlthomson at charter.net> wrote:
>> Bob – Check that thread size again. 7/16 SAE UNF thread is 20 Threads per Inch.  There is a 7/16-24 thread size listed in the McMaster-Carr catalog but I’m not sure if that is what you want.
>> 
>>  
>> 
>> https://www.mcmaster.com/taps/general-purpose-taps-9/
>> 
>> 
>>  
>> 
>> Alex Thomson
>> 
>>  
>> 
>> From: 6pack [mailto:6pack-bounces at autox.team.net] On Behalf Of rmf3860 rmf3860
>> Sent: Monday, June 14, 2021 8:11 PM
>> To: 6pack at autox.team.net
>> Subject: [6pack] Cylinder Head Bolts
>> 
>>  
>> 
>> I’ve looked “everywhere” and cannot find a 7/16-24 thread chaser tap to clean out the block holes. I assume I’m correct about the 7/16-24 size.
>> 
>>  
>> 
>> Thanks.
>> 
>> Bob Fabie
>> 
>> Fredericksburg, VA
>> 
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