Engine Broken Smog pump bolt

townethug · Jun 14, 2025

An easy job seems to have taken a turn of the worst. Attempted to remove my smog pump this morning and despite penetrating oil the top bolt broke while trying to remove it. I'm hoping ya'll have some ideas for how to proceed but the situation seems pretty dire.

Thanks friends.

nickyb · Jun 14, 2025

#1 try an easy out bit
#2 if possible weld a nut on whatever is still there and remove
#3 drill it out in steps , start small and work up till you can use a tap .
#4 leave the smog pump off.

limp · Jun 14, 2025

Is it broken flat with the head casting??

townethug · Jun 15, 2025

Thanks for the replies. It broke about an inch in from the head. Drilling it out w/ an extractor set is about the only option but I think both the fan and radiator are going to need to come out to have enough clearance to get the drill in there. I was hoping for some genius wisdom but I'm not seeing another way around it.

Its the stock radiator and fan so I might as well swap them both out while I'm at it.

General karthief · Jun 15, 2025

I hate to replace stuff 'just because I'm there' due to the low quality of the replacement parts today, if it works as intended I'd reuse it.
But if it makes you feel better

gkomo · Jun 15, 2025

Radiator, could definitely replace. Fan and shroud tho I would leave be.

limp · Jun 15, 2025

If you have an inch of stud can you double nut some nuts on it?? Heat it up, try the wax treatment, then work it out...
When welding a large nut I watched a guy use some large copper washers then put the nut on top of it... Weld it .. The copper washers will prevent any of the weld from sticking to the block...

gkomo · Jun 15, 2025

I read that as the bolt broke like an inch inside the hole. I would think drilling it out or using an extraction bit would be the only way.

limp · Jun 16, 2025

gkomo said:
I read that as the bolt broke like an inch inside the hole. I would think drilling it out or using an extraction bit would be the only way.

I missed that....

Engine Broken Smog pump bolt

townethug

nickyb

I gotta say i never painted my nuts, Never Ever

limp

wrap a little cheese around it and its a done

townethug

General karthief

wonder how much it would cost to ship you a pair

gkomo

now i can hopefully expect to receive the shaft

limp

wrap a little cheese around it and its a done

gkomo

now i can hopefully expect to receive the shaft

limp

wrap a little cheese around it and its a done

Similar threads

Engine Broken Smog pump bolt

I gotta say i never painted my nuts, Never Ever

wrap a little cheese around it and its a done

wonder how much it would cost to ship you a pair

now i can hopefully expect to receive the shaft

wrap a little cheese around it and its a done

now i can hopefully expect to receive the shaft

wrap a little cheese around it and its a done

Similar threads

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