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 Post subject: water pump
PostPosted: Sun Apr 05, 2020 4:16 am 
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1 BBL (New)

Joined: Sat Apr 04, 2020 4:58 pm
Posts: 1
Car Model*: 1987 d150 225 s6
hello i have been working on my 1987 d150 with the slant 6 and i can’t get the water pump to seal correctly i have a leak on the bottom left bolt i have tried lock tight rtv and nothing is sealing it what is a good way to do it and can i remove just that bolt to fix it i have waisted two water pumps already


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 Post subject: Re: water pump
PostPosted: Sat Apr 11, 2020 5:47 pm 
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4 BBL ''Hyper-Pak''

Joined: Fri Mar 30, 2012 7:30 pm
Posts: 32
Car Model*:
Can't you just use a good waterproof thread sealer? On my 52 Plymouth when I had to replace the intake manifold gasket I used a product from NAPA that thoroughly sealed it. Several bolts went into the water jacket. If you need to know what I used I can go look for the can I got.


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 Post subject: Re: water pump
PostPosted: Sat Apr 11, 2020 6:30 pm 
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TBI Slant 6

Joined: Sun Sep 11, 2005 6:18 am
Posts: 115
Location: Illinois
Car Model*: 69 Valiant
I've never had one of those leak before. I've always had good luck using white teflon pipe sealant paste though. Be sure to run a tap in the threads in the block and clean the threads on the bolts well.

I just changed the water pump on my valiant yesterday. Had no sign of a leak in that spot. It was just starting to leak from the weep hole.

Joel


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 Post subject: Re: water pump
PostPosted: Sun Apr 12, 2020 6:37 am 
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Board Sponsor

Joined: Wed Oct 23, 2002 7:57 pm
Posts: 6548
Location: Waynesboro, Pa.
Car Model*: 65 Valiant 2Dr Post
I have never had problems either. But make sure the hole is clean, use teflon tape and then a little silicone on the threads. Surely shouldn't leak then. Are you sure it's not coming from above? Bypass hose...etc?

Why are your water pumps "wasted" ??

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2 Mopars come with Spark plug tubes. One is a highly refined, world class, racing machine. The other is a 426 CI. boat anchor!
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 Post subject: Re: water pump
PostPosted: Mon Apr 13, 2020 8:01 am 
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Supercharged
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Joined: Sat Feb 16, 2008 1:25 pm
Posts: 5481
Location: Downeast Maine
Car Model*:
Drain down cooling system, clean and dry offending bolts and their holes to remove anti freeze, oil etc. than apply green Loctite, or pipe dope, or silicon gasket maker, bolt it up, and don't refill cooling system for 24 hours until whatever product you used cures.

By clean I mean wire brush to remove any corrosion on bolt chase bolt hole with tap, de-grease everything with brake cleaner before coating bolt with sealer. Sealer slathered over rust and pits often will not seal.

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67' Dart GT Convertible; the old Chrysler Corp.
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