don't use silicone
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Freshman User
Joined: Apr 2003
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don't use silicone
351w is getting rebuilt, Machine shop just informed me that I have a cracked block, They said that the water pump was installed with silocone gasket material and by installing the bolts the silocone does not squeeze out thus putting force on the block. Now I am in the process of finding a new block for a truck that is totally rebuilt. Word the wise, don't use silocne in this type of situation, shop said this is not the first time this has shown up.
Elder User
Joined: Jul 2002
Posts: 523
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From: Illinois
don't use silicone
How does silicone exert any more pressure than gasket material? And how does that stuff crack a block?
It's like play-doah. I think someone was using their handy 3/4 impact wrench when installing the pump.
It's like play-doah. I think someone was using their handy 3/4 impact wrench when installing the pump.
Posting Guru
Joined: Aug 2002
Posts: 1,214
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From: Minneapolis, MN
don't use silicone
If you need to seal threads that might be going into the water jacket, a little on the threads will suffice. You don't need to squeeze a gob into the hole. That's just about the only way silicone could crack a block.
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sdetweil
1948 - 1956 F1, F100 & Larger F-Series Trucks
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Mar 5, 2010 07:53 PM
