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1254 Exhaust Hole Size


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#1 stetson OFFLINE  

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Posted August 11, 2014 - 07:55 AM

Im having to tap my 1254's exhaust hole in the head can anyone tell me what size i need to order?

its the wisconsin 12 horse



#2 Bruce Dorsi ONLINE  

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Posted August 11, 2014 - 08:11 AM

You'll need a 1" NPT (National pipe taper) thread tap.

 

This a tapered tap with 11.5 threads per inch.


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#3 Bill 76 ONLINE  

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Posted August 11, 2014 - 02:58 PM

If your chasing a rusty thread make sure you use plenty of cutting oil---Rust is really hard on taps and other cutting tools






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