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Posted by Sherman in Idaho [72.47.9.37] on Wednesday, August 15, 2012 at 11:15:40 :
In Reply to: V-belts are not tooo critical posted by Chris Case [75.36.37.235] on Tuesday, August 14, 2012 at 16:45:20 :
A military crank pulley requires the fan spacer. The military and civilian fan pulleys have the same offset but the military one has the wider groove. This motor has a civilian crank pulley because the only timing cover I had that still had the pointer on it was a civilian one. I'm using the water pump off of the military motor. With the spacer removed, the civilian fan pulley lines up with the civilian crank pulley and all is fine until I put the belt on. With the civilian pulleys, the belt rubs on the bracket that attaches the front motor support to the radiator frame. I don't see any way around that, so I just put it together that way and once I get the assembly in the truck, I'll remove that bracket. I'd rather not, because I went to the trouble of repairing the section of radiator frame that Wittenberg torched out to accomodate the driveline for an MU2 winch (which I'm not going to use), and I even made a giant flat-head screw and countersunk the hole in the bracket thinking that would give me enough clearance for the belt, but it doesn't. The Wittenberg conversion doesn't bolt any of the front clip to the radiator frame like on a stock M37, so there really isn't any need for the bracket except to make it easy to replace the engine and radiator as a unit. That's turning out to be very useful so I can get the bugs worked out of all this in town and take the whole thing out to the woods as a unit. All in all, I've learned something about yet another problem with putting a civilian 230 in an M37. Now I just need to figure out why the distributor rotor seems to be pointing a different way than on my other trucks. I thought I was really careful to get it right when I put the oil pump in and had the head and tappet covers off the motor, but I must have done something wrong. Would definitely like to get that right before I take it out in the boonies and try to start it.