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Water pump baffle #346826 07/09/15 02:44 PM
Joined: Apr 2014 Posts: 193 Lancs, UK Peterw OP Shade Tree Mechanic
OP Peterw Shade Tree Mechanic Joined: Apr 2014 Posts: 193 Lancs, UK	Hi, i had water pump troubles on my 1930 SR and when we got it off it was completely shot. I have ordered one of the new sealed bearing ones and they said that I had to also have a baffle plate. I have seen comments on baffle plates, about getting them centred etc on the forum, but I have no idea just where they are fitted. Can someone tell me just where they go in relation to the water pump and any other key info. Many thanks PeterW

Filling Station - Chevrolet & GMC Reproduction Parts

Re: Water pump baffle Peterw #346828 07/09/15 03:49 PM
Joined: Nov 2008 Posts: 1,513 Rome PA Andys29 ChatMaster - 1,500
Andys29 ChatMaster - 1,500 Joined: Nov 2008 Posts: 1,513 Rome PA	The baffle plate goes right behind the water pump on the engine block. If you have the radiator out and look into the opening behind where the pump was you should see it. If you look and can see the number one cylinder outside casting your baffle plate is gone. That is what I found on my 1929. That is as far as I have gotten into fixing it. I do have the new pump and a new baffle plate on hand.

Re: Water pump baffle Peterw #346829 07/09/15 03:52 PM
Joined: Sep 2005 Posts: 558 Cleves, Ohio DanR Oil Can Mechanic
DanR Oil Can Mechanic Joined: Sep 2005 Posts: 558 Cleves, Ohio	Hi Peterw, Go to Bill Barker's excellent site for 1931 Chevs: www.1931chevrolet.com He has just updated it to explain the installation of the water pump including the baffle plate, which sits behind the pump in the engine block. Also, review this thread from a couple of weeks ago: https://vccachat.org/ubbthreads.php/topics/346079/Water_Pump_Baffle_Plate_cleara#Post346079 Happy Motoring, Dan

Re: Water pump baffle Andys29 #346835 07/09/15 06:14 PM
Joined: Nov 2001 Posts: 29,863 Eagle Point, Oregon Junkyard Dog Tech Advisor ChatMaster - 25,000
Junkyard Dog Tech Advisor ChatMaster - 25,000 Joined: Nov 2001 Posts: 29,863 Eagle Point, Oregon	If your baffle plate is still in place and in good condition....leave it alone! The Mangy Old Mutt "If It's Not Junk.....It's Not Treasure!"

Re: Water pump baffle Junkyard Dog #346856 07/09/15 11:36 PM
Joined: Nov 2001 Posts: 5,906 Likes: 8 Issaquah, WA Bill Barker Former ChatMaster ChatMaster - 5,000
Bill Barker Former ChatMaster ChatMaster - 5,000 Joined: Nov 2001 Posts: 5,906 Likes: 8 Issaquah, WA	Yep... and if you do decide to replace it... you PROBABLY need to remove your radiator first in order to get a straight shot at forcing the new one back into place. Here'a a mirror view looking into the pump cavity with the baffle plate in place.

Re: Water pump baffle Bill Barker #346865 07/10/15 07:51 AM
Joined: Dec 2001 Posts: 168 Likes: 1 Powell, Ohio 31 Chevy Guy Shade Tree Mechanic
31 Chevy Guy Shade Tree Mechanic Joined: Dec 2001 Posts: 168 Likes: 1 Powell, Ohio	While on the topic I am going to ask a very naive question .... what is the purpose of the baffle plate and its opening? Was this opening a result of casting process for the block. Cannot remember exactly but I beleve there are other freeze plug locations elsewhere on the 31' block - is it a large freeze plug??. Just wondering. John lanning John Lanning

Re: Water pump baffle 31 Chevy Guy #346887 07/10/15 03:26 PM
Joined: Apr 2014 Posts: 193 Lancs, UK Peterw OP Shade Tree Mechanic
OP Peterw Shade Tree Mechanic Joined: Apr 2014 Posts: 193 Lancs, UK	Many thanks for all the excellent comments. I found Bill Barkers description very helpful. Hope I can now sort out the new pump. PeterW

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