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sealent on waterpump gasket ????
https://slantsix.org/forum/viewtopic.php?t=57405		 Page 1 of 2
Author:  USAJon [ Tue Mar 31, 2015 9:45 am ]
Post subject:  sealent on waterpump gasket ????
going to install a water pump on our1968 as the old one weeps,
it is a Fel -Pro /$2.00 from local Carquest should I use a sealant? the old stock on had some...
Author:  SpaceFrank [ Tue Mar 31, 2015 1:20 pm ]
Post subject: 
It might not be necessary, but it can't hurt as long as you don't go overboard. You don't want it gooshing out everywhere when you torque the thing down.

I think when I did it last, I used a light coat of RTV on the engine side of the gasket that actually touches the engine. I left the other side of that gasket and both sides of the pump-to-plate gasket dry. My thinking is that it was a new pump and those are all clean, freshly machined surfaces, so the gaskets shouldn't need any help sealing. I just used RTV on the side that hits the engine block, as it's a 50-year-old hunk of cast iron and isn't a perfect surface anymore.

Let the RTV get tacky before you install the pump.
Author:  Louise76 [ Tue Mar 31, 2015 6:54 pm ]
Post subject: 
Very very thin coat of whatever sealant I have, (RTV,etc.) just to fill any roughness. As water pumps are cheap, and can be a disaster when they blow a seal/bearing on a trip, why not just replace the pump now, and be good for 8 more years? Same amount of work. Unless your pump is nearly new. :)
Author:  Serj22 [ Tue Mar 31, 2015 8:16 pm ]
Post subject: 
I put the gray water pump sealant on by permatex. I was also told that permatex 2 works as well, but not permatex 1, if you ever want it to come apart again.
Author:  USAJon [ Wed Apr 01, 2015 8:04 am ]
Post subject: 
anyone used stainless steel Allen heads on this app?

as in to bolt up water pump.
Author:  Louise76 [ Wed Apr 01, 2015 10:41 am ]
Post subject: 
I never had a problem using Permatex anti-seize on the steel bolt threads.
Author:  SlantSteve [ Wed Apr 01, 2015 1:50 pm ]
Post subject: 
Quote:
anyone used stainless steel Allen heads on this app?

as in to bolt up water pump.
Aluminum pump+stainless bolts+ water= corrosion of the alloy housing. Use steel bolts.
Author:  '67 Dart 270 [ Wed Apr 01, 2015 2:15 pm ]
Post subject:  SS vs steel
Depends on the SS type. If it is Martensitic 410-type, then yes, the galvanic coupling is large and the corrosion potential high. If it is 302/304, 303, 305 type SS, it's probably better, but that said, it is way safer to avoid SS with aluminum unless you can keep them from actual contact.

brian
Author:  '67 Dart 270 [ Wed Apr 01, 2015 2:19 pm ]
Post subject:  sealant on gasket
I usually use a very thin layer on all sides of the gaskets. Never had a leak. I had the same question though, does anybody not use any sealant? I've seen this advertised with certain water pumps "no need for sealant" and that posed the question for me.

brian
Author:  Louise76 [ Wed Apr 01, 2015 2:40 pm ]
Post subject: 
Are those "no sealant" gaskets pre-goo'd?
Author:  Reed [ Wed Apr 01, 2015 4:08 pm ]
Post subject: 
I have never had a problem with leaking or corrosion using the factory bolts and no extra anything on the water pump gasket.
Author:  '67 Dart 270 [ Wed Apr 01, 2015 6:43 pm ]
Post subject:  Thanks Reed
That's what I was looking for.

To answer the previous question, I've never purchased a water pump where they say "no sealant needed" but from that I assumed that since they all provide pretty much the same (paper) gaskets, it should apply across the board.

brian
Author:  nuttyprof [ Wed Apr 01, 2015 6:52 pm ]
Post subject: 
I just use a thin smear of grease on both sides. Never had a problem.
Author:  emsvitil [ Thu Apr 02, 2015 2:28 am ]
Post subject: 
Hylomar
Author:  Sean Mallory [ Thu Apr 02, 2015 11:05 am ]
Post subject: 
Quote:
Hylomar
yup
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