Help me please
Thread Starter
5th Gear
Joined: Sep 2005
Posts: 5
Likes: 0
Help me please
I am building a sbc 350 from the ground up. I am in the process of putting all of the pulleys on and I notice that my water pump and crank pulleys are not in line with each other. The crank pulley is in toward the motor about an 1/8" compared to the water pump pulley. So I go ahead and put the alternator on and the pulley on it lines up fine with the crank pulley. So I am hoping this has narrowed the problem to the water pump. It's almost like the round pulley mounting plate is not pushed on the shaft enough or something. Have any of you ever seen this problem? Does anyone know what the measurement should be if I placed the water pump on a flat surface and measured from the flat surface to the surface where the pulley mounts to?
BTW, i am using aluminum pulleys but I also have the stock pulleys and I get this problem with both sets of pulleys.
Please help me. It's a short water pump btw.
BTW, i am using aluminum pulleys but I also have the stock pulleys and I get this problem with both sets of pulleys.
Please help me. It's a short water pump btw.
Heel & Toe
Joined: Sep 2005
Posts: 21
Likes: 0
From: Rescue CA
I have never seen this, but that doesn’t mean that the water pump could be defective. Do you have the old water pump to compare it to? Or you might want to take it back where you got it from and have them compare with there stock on hand.
Burning Brakes
Joined: Jun 2005
Posts: 764
Likes: 2
From: THE OLDER I GET THE BETTER I WAS! NORTHERN ONTARIO
Originally Posted by rtee
I have never seen this, but that doesn’t mean that the water pump could be defective. Do you have the old water pump to compare it to? Or you might want to take it back where you got it from and have them compare with there stock on hand.
The ORIGINAL and bestest
Joined: Oct 2000
Posts: 10,009
Likes: 240
From: Toronto Ontario
Toronto Events Coordinator
there are actually two short water pumps. dimensions from block surface to hub is : 5 5/8" for 69-70 vettes or 5 13/16" for 71-82 vettes. hope this helps.
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Drifting
Joined: Mar 2005
Posts: 1,806
Likes: 3
From: Burlington WI
Originally Posted by 7t2vette
there are actually two short water pumps. dimensions from block surface to hub is : 5 5/8" for 69-70 vettes or 5 13/16" for 71-82 vettes. hope this helps.
Burning Brakes
Joined: Apr 2004
Posts: 847
Likes: 0
From: Des Allemands LA
You mentioned aluminum pulleys. As stated above there is a difference in the water pumps, if you are planning on a different set of pulley's other than stock corvette one's now would be the time to address them. This is also true if you have donor brackets from another car. When you start mixing and matching accesories, brackets and pulley's it can make you pull your hair out. Best to have all the stuff you plan on using come from the same place or donor engine.
ltlevil
ltlevil
Thread Starter
5th Gear
Joined: Sep 2005
Posts: 5
Likes: 0
It's the right pulley. I have both the original and new alluminum have the same problem.
I measured my Water pump and it's not 5 5/8 or 5 13/16. it's actually 5 11/16. It's only a 16th more than the 5 5/8 but that 1/16 would help out.
All I know is I am ready to fire this thing up.
I measured my Water pump and it's not 5 5/8 or 5 13/16. it's actually 5 11/16. It's only a 16th more than the 5 5/8 but that 1/16 would help out.
All I know is I am ready to fire this thing up.
Thread Starter
5th Gear
Joined: Sep 2005
Posts: 5
Likes: 0
Let me ask a stupid question. it's not possible to put the hamonic balancer on too far is it?
I ordered a new water pump today. Hope this fixes my headache!
Thanks for the compliments on the motor guys.
I ordered a new water pump today. Hope this fixes my headache!
Thanks for the compliments on the motor guys.
Burning Brakes
Joined: Apr 2004
Posts: 847
Likes: 0
From: Des Allemands LA
Originally Posted by Jason333
Let me ask a stupid question. it's not possible to put the hamonic balancer on too far is it?
I ordered a new water pump today. Hope this fixes my headache!
Thanks for the compliments on the motor guys.
I ordered a new water pump today. Hope this fixes my headache!
Thanks for the compliments on the motor guys.
