351w Water Pump Bolt Leaking With Helicoil In Place

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Robert Ebanks

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Sep 11, 2017

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Oct 25, 2017

#1

• Oct 25, 2017

• #1

Hey guys, I have a huge problem. I have, what I thought was a successful Helicoil install, but after installing water pump water appears to be leaking past the bolt. What are your guys suggestion, on how to finish the fix. First picture is leaking side of water pump. The second picture is the opposite side same bolt hole.

 

Noobz347

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Oct 25, 2017

#2

• Oct 25, 2017

• #2

Thread Seal. The same you would use on that bolt even without a helicoil.

 

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Robert Ebanks

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Oct 25, 2017

#3

• Oct 25, 2017

• #3

Thank you, is the leaking normal just with water added to the motor? I thought it was strange that it was just the Helicoiled side leaking, once the motor was put back together. Any suggestions on great thread sealers?

 

Noobz347

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#4

• Oct 25, 2017

• #4

It is not normal for it to leak statically, no.

 

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Robert Ebanks

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Oct 25, 2017

#5

• Oct 25, 2017

• #5

That was the strange thing, only movement was water being filled in the cooling system. Any suggestions? The opposite side pucture if zoomed in appears dry.

 

Noobz347

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#6

• Oct 25, 2017

• #6

Seal it and check again

 

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Robert Ebanks

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Oct 25, 2017

#7

• Oct 25, 2017

• #7

Thanks for your time.

 

jrichker

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Oct 27, 2017

#8

• Oct 27, 2017

• #8

I have put a Helicoil in on the passenger side, in the top bolt and had no problem. I sprayed the gasket and the mating surface of the pump with weather strip adhesive to keep the gasket from slipping. Then I smeared a thin coat of blue silicone sealer around the water passage on the block and it works great, no leaks.

 

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Robert Ebanks

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Oct 27, 2017

#9

• Oct 27, 2017

• #9

jrichker said:

I have put a Helicoil in on the passenger side, in the top bolt and had no problem. I sprayed the gasket and the mating surface of the pump with weather strip adhesive to keep the gasket from slipping. Then I smeared a thin coat of blue silicone sealer around the water passage on the block and it works great, no leaks.

Click to expand...

Thanks for the suggestion, I believe my biggest issue was the Helicoil had that metal thread bent over keeping the bolt from seating completely against the pump. I'll hopefully finish it up tonight and post updates, thanks for suggesting and insight!

 

jrichker

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#10

• Oct 27, 2017

• #10

Robert Ebanks said:

Thanks for the suggestion, I believe my biggest issue was the Helicoil had that metal thread bent over keeping the bolt from seating completely against the pump. I'll hopefully finish it up tonight and post updates, thanks for suggesting and insight!

Click to expand...

The metal tang needs to be broken off to complete the installation. A 1/4" pin punch or plain rod and a hammer be used to break the tang off. Then you get to fish the broken tang out of the hole. A small magnet may work for that; Home Depot has small super magnets for about $3 a package

 

Last edited: Oct 27, 2017

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Robert Ebanks

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Nov 2, 2017

#11

• Nov 2, 2017

• #11

Update****
First and foremost thanks for all the suggestions. My issue appeared to be the Helicoil, got it pulled out with an extractor bit, and re-tapped the whole, an then I chose to loctite the Helicoil in place. I then use ultra black silicone on the tip of water pump bolts just in case.

 

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