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TO 20 Head

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cntrycowboy

New User
Hi everyone.. I have a problem, my manifold cracked. I bought a new one which was a heavier casting, and the studs weren't long enough to replace the nuts. I was told to remove the studs ( frozen in place ) I cut the studs flush with the head and unknown to me the studs were only in by about 4 treads.. Yup I drilled right into the water jacket.. Open to suggestions on what to do now.. Thanks in advance for your help...
 
Chase all threads with a bottoming Tap. I would then apply TEFLON THREAD DOPE on new studs. Run studs in ,install manifold.

Bob..
a224904.jpg
 
Believe it or not, I did do that.. Took my time and ran a tap at each hole, covered each bolt with Teflon tape slowed it down but still oozing out..
 
White Teflon tape prone to tearing upon installation. Teflon sealant
liquid has a tendency to seal a bit better. Teflon tape is secondary to
yellow tape used on natural gas/propane lines. The yellow tape is a lot
tougher and works better on most applications that I have found.
Either yellow tape or liquid should end your seepage and allow for future
removal.
 
ANSI EXTRENAL THREADED SIZE CHART:

A category 2B Fastener 3/8 NC has a MIN PITCH DIAM .3344 and a MAX PITCH DIAM .3401

A category 3B Fastener 3/8 NC has a MIN PITCH DIAM .3344 and a MAX PITCH DIAM .3387


Check with a MACHINE SHOP and see if they can lend you a CATEGORY 2B Fastener for a trial fit:


Bob...
 
OK Guy's I pulled each bolt out one at a time,cleaned and put (gas company) Teflon yellow tape around the treads about 5 - 6 times around each.. Well it seamed to work.. Thanks for all of your help..
 
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