The Stovebolt Site Forums The Shop Area Engine Shop 235 Fan blade question

My fan on my 56 235 has seen better days. with welds etc, it is not strong enough to not hit the pullys all the time when I am driving. so I am looking for another fan. The problem is I have tried 3 now and the bolt patterns never match. I will continue to look for one, but I wanted to ask are the fan bolt holes different for different 235's? if I supplied the hole measurements would someone know from that what the issue is? I have tried 2 235's and a 194 so far. This 235 is from a ton and a half if that matters.

There were at least two different fan blades on 235 engines. One change might have taken place on second-series 1955 235/261s when the water pump was changed. The on-line Master Parts Book website is down - maybe someone will check a MPB for you.

If you send me the hole measurements, I have two different bolt pattern water pumps (the other difference is the diameter of the "snout" on the water pump - the size in the center hole on the blade).

when I get off work, I will measure it for you and get back. thanks

When I replaced my water pump with a new one from Patricks I ended up using a 56' V8 blade because the original 216 blade wouldn't bolt up. Think I still have it.

Why wouldn't it bolt up? Did the holes not line up? When I got a new water pump for my '48, the flange on the pump was too wide, interfering with the rivets on fan blade. I had to grind out portions of the pump so the fan blade would seat properly.

holes do not line up Tom R

The bolt pattern is different as was previously referred to.

so heres the deal on the fan (I think). the truck is a 55 the motor is out of a ton and a half from a 54.

The 235 motor I took out of my truck that didnt run, has a long shaft on the water pump, this engines water pump, theres only maybe an inch from the upper pully for the belt.

it has a non tapered circular piece of metal between the pulley and the back of the fan. I have a gap of approx. 3" from the radiator. so in pecking order from engine to radiator is belt pulley, 4"-5" dia circular metal spacer w/ no taper, fan, then radiator.

The fan centerline hole measuurements are approx. (I can get exact) two and a quarter across the "X". This is straight across the about one inch raised shaft center of the fan. The 4 bolt holes that secure the fan create a square and the measurement for these holes is centerline to centerline one and a half.
my issue w/ the fan is it has been repaired numerous times and has no strength anymore and when the engines revs, the fan flexes and hits the bottom pulley. The clearance for this fan is probably less than a sixteenth of an inch to the bottom pulley.

I cant put back on the other water pump without changing alot on this engine as the prior owner removed the generator and installed a alternator, so the old water pump shaft will not be in line w/ what he rigged together for the alternator bracket.

I could put washers, I guess bwetween the fan and where it conencts to create space from the bottom pulley, or look for another fan, so I am trying the fan approach first. another option is an electric fan, but thats not as stock as I would like to be with my truck.

Got it figured out. thanks