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Posted By: Jeff Ogden Water pump change in 37? - Sun Feb 16 2020 01:54 AM
I thought I read that there was a water pump change in 37 and if it did happen did the water pump get longer or shorter,getting the new 235 ready to drop in my 37 and found what I think is a original fan which hits the balancer. There is only 1/4 inch between the fan and radiator with the present engine that has a 49 to 54 fan and I am trying to get a little more distance,found a fan off a 46 to 48 that has notches to clear the balancer but it has thicker blades that might put me back where it is now. Both engines are 55 to 62 235s with 54 water pumps with the adapter.

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Posted By: Bill Trotter Re: Water pump change in 37? - Sun Feb 16 2020 02:44 AM
I had my water pump nose and front of pulley machined down. Now have 1/2- 5/8" clearance.
Posted By: Jeff Ogden Re: Water pump change in 37? - Sun Feb 16 2020 03:24 PM
I just remembered that when I had the radiator rebuilt I had a 4 row core put in so that might be parts of my problem.
Posted By: BC59 Re: Water pump change in 37? - Sun Feb 16 2020 10:58 PM
Looks like you need an earlier balancer.
Posted By: Jeff Ogden Re: Water pump change in 37? - Mon Feb 17 2020 02:53 AM
It has a 54 balancer.
Posted By: Pre '68 Dave Re: Water pump change in 37? - Mon Feb 17 2020 03:48 PM
Your problem has me scratching my head.
In your first picture it looks like you are using a 16" passenger style fan. I have never seen one of those hit the balancer. In fact with a 1954 balancer, as you have, and my adapter with a 1953-54 pump the fan should be in the factory position.
There must be more to the story.
What am I missing?
Posted By: Jeff Ogden Re: Water pump change in 37? - Mon Feb 17 2020 11:57 PM
Balancer was not all the way in but the fan is now only a hair away from the balancer,going to get a 1/8 spacer made and use the black 16 inch fan. The rusty fan is 18 inches and what would it have came off of originally,I took it off a 46 to 48 car.

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Posted By: Jeff Ogden Re: Water pump change in 37? - Sat Jun 13 2020 08:27 PM
Fan will still hit the balancer so going to clean up the 18 inch fan and see how it does.
Posted By: Dusty Re: Water pump change in 37? - Mon Jun 15 2020 06:08 AM
That's weird .

Here are a couple of pics of my '54 235 in the '40. I used a new water pump from rock auto , it was 4mm longer than the original (I shortened it to fit), my fan is 18" and clears the balancer by about 3/8" . There is maybe less "set" on the blades than you have. There is no interference at all . It is very close to the radiator. Like you , I have also got more cores in the radiator.

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Posted By: 9% grade Re: Water pump change in 37? - Tue Jun 16 2020 04:25 AM
Is it a re-pop pump? Is hub on shaft same as OE? If not move hub out on shaft W/press,remove back cover only need 1/4-5/16 of snout sticking out for fan!
Posted By: 9% grade Re: Water pump change in 37? - Tue Jun 16 2020 04:27 AM
Is it a re-pop pump? Is hub on shaft same as OE? If not move hub out on shaft W/press,remove back cover only need 1/4-5/16 of snout sticking out for fan!
Posted By: Dusty Re: Water pump change in 37? - Tue Jun 16 2020 06:56 PM
Jeff , I re read your post and see you have a '37 .

Just in case there is a minor difference to my '40 , here are a couple of pics of my '37 with the same '54 235 installed. I have taken a better pic (by accident smile ) of the water pump pulley depth .

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Posted By: Jeff Ogden Re: Water pump change in 37? - Tue Jun 16 2020 09:29 PM
It looks like no matter what I do the fan is going to be close to the radiator.
Posted By: Jeff Ogden Re: Water pump change in 37? - Wed Jun 17 2020 03:34 AM
It is a new pump and do not have a original to compare it to right now.
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