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Removing coolant nipple from head

Old 06-18-2013, 01:57 PM
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Default Removing coolant nipple from head

Im swapping to a BP4W head on my boosted Protege. I need to swap out the coolant nipple on the back of the head for the heater core fitting in a FWD orientation.

Any Ideas on getting this out without bitching up the fitting since I need to swap them? Should I just let the machine shop deal with it?



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Attached Thumbnails Removing coolant nipple from head-getattachment.jpg   Removing coolant nipple from head-bp05_protege_head.jpg  
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Old 06-18-2013, 06:27 PM
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So, I picked up a super cheap protege head to port and polish and use on my miata. I tried everything I could think of to get that stupid fitting out and never did manage to succeed. I heated the whole head and chilled that fitting, tried penetrating lube, pliers, hammering etc. etc. So, take that for what it's worth, but you might want to start researching a different option.
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Old 06-18-2013, 06:44 PM
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Originally Posted by 92dx View Post
Any Ideas on getting this out without bitching up the fitting since I need to swap them?
Use an angle grinder to cut away the head around the pipe.

The only time I have seen someone attempt to remove that fitting "cleanly," he wound up having to drill out the remains and then tap the head for a thread-repair sleeve.
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Old 06-18-2013, 07:08 PM
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Originally Posted by baron340 View Post
So, I picked up a super cheap protege head to port and polish and use on my miata. I tried everything I could think of to get that stupid fitting out and never did manage to succeed. I heated the whole head and chilled that fitting, tried penetrating lube, pliers, hammering etc. etc. So, take that for what it's worth, but you might want to start researching a different option.
I was figuring this may be a nightmare waiting to happen lol.

Originally Posted by Joe Perez View Post
Use an angle grinder to cut away the head around the pipe.

The only time I have seen someone attempt to remove that fitting "cleanly," he wound up having to drill out the remains and then tap the head for a thread-repair sleeve.
Guess I can chop it flush with the head and drill out the rest, then tap it for an npt to AN fitting or something to get a 90 degree 3/4" barb.

Thanks for the replies gentlemen
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