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#1052892 - 08/12/17 11:49 AM Water pump replacement  
Joined: Apr 2000
Posts: 79
mikem Offline
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mikem  Offline
Member

Joined: Apr 2000
Posts: 79
Cleveland, OH
I'm replacing the original (!) water pump on my '87. Should any RTV be used where the gaskets go (if nothing else, to help hold the gaskets in place during reinstallation). If so, which type? Also, is any thread sealer needed on the mounting bolt threads? (I'm not sure if any of the bolts for the water pump on this motor pass though a water jacket,) If so, what should be used? Thanks.


87 Notchback, totally stock, original owner.
#1052894 - 08/12/17 01:07 PM Re: Water pump replacement [Re: mikem]  
Joined: May 2017
Posts: 35
tedgley Offline
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tedgley  Offline
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Joined: May 2017
Posts: 35
Covington, KY
You're really not supposed to put any RTV on the gasket, but a little dab here and there to hold it in place probably won't hurt anything. I'd try to do it without any RTV myself.

Use Permatex High Performance Thread Sealant (part # 56521 or 56525) to seal the pump bolts. Pretty sure there is at least one of the bottom ones that hits the water jacket. Just put it on all of them.

Actually, I've also used Loctite 567 PST Thread Sealant with no problems if you happen to already have some of that.

Last edited by tedgley; 08/12/17 01:07 PM.
#1052904 - 08/13/17 12:42 AM Re: Water pump replacement [Re: mikem]  
Joined: Mar 2003
Posts: 1,855
TooSlow406 Offline
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TooSlow406  Offline
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Joined: Mar 2003
Posts: 1,855
Friendswood, TX
i always put rtv on all my gaskets. i use the black. and use sealer on the bolts. if you havent bought the pump yet, I'd use a weiand team g, it's aluminum and has a larger
impeller.

Last edited by TooSlow406; 08/13/17 12:43 AM.

1985 Monte 406sbc, RHS ported 220s, Schoenfeld 1 3/4", 3" exhaust, Dynomax Ultra-Flo, Holley ported Strip Dominator, Dual Holley Blues, Holley HP 950, Comp roller 236/245, .570/.574
#1052908 - 08/13/17 04:32 AM Re: Water pump replacement [Re: tedgley]  
Joined: Dec 1999
Posts: 11,163
86ttop Offline
15+ Year
86ttop  Offline
15+ Year
Member

Joined: Dec 1999
Posts: 11,163
Brooksville, Fl
Originally Posted by tedgley
You're really not supposed to put any RTV on the gasket, but a little dab here and there to hold it in place probably won't hurt anything. I'd try to do it without any RTV myself.

Use Permatex High Performance Thread Sealant (part # 56521 or 56525) to seal the pump bolts. Pretty sure there is at least one of the bottom ones that hits the water jacket. Just put it on all of them.

Actually, I've also used Loctite 567 PST Thread Sealant with no problems if you happen to already have some of that.



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