Hi,
My name is Chip Robie. I live in Stuart Virginia I have a 1968FJ40 with a three speed.
After a head gasket failure, I decided to do an F engine build, so my FJ would have a clean fresh motor. I ordered a remanufactured long block from an engine building service in Chatsworth California. They sent me an early F engine with casting ID F243255. This engine would be replacing the original FJ motor with casting ID F260456. The remanufactured engine comes as a long block, so I am responsible for adding all external engine parts: water pump, thermostat, alternator, oil, pressure regulator, oil pressure sender, intake and exhaust manifolds, distributor, oil fill tube, and so on.
I have been taking my time on this build, starting first with painting the engine block in POR. I just got to adding a new water pump and thermostat to the block and made an unfortunate discovery. The water pump outlet on the remanufactured F engine is not in the same place as the water pump outlet on the F engine in my FJ 40. By this, I am referring to the water outlet from the block and the surrounding threaded stud holes for the water pump body. The water pump threaded stud holes on my current engine sit right next to the timing chain cover. There might be 1/32 of an inch between the nearest stud hole to the timing chain cover. The water pump on my remanufactured engine, sits higher by about an inch and a half. The nearest threaded stud hole is 1 1/4 inches away from the timing chain cover.
The net effect maintains the water pump body orientation, but moves the whole assembly up by about an inch and a half. The top of the water pump body actually touches the lower thermostat housing mount at the block. Where the original motor has a gap of one and a half to 2 inches between the top of the upper pulley and the lower thermostat housing, the remanufactured motor has no gap between the top of the upper pulley and the lower thermostat housing at all. The top of the pulley wheel fouls the lower t-stat housing, preventing the pulley wheel from being fully screwed in to the water pump spindle plate. The pulley wheel will not fit straight on.
Other than the moved location of the water pump body, everything else looks identical between my early F engine, and the remanufactured F engine. However, the moved location of the water pump causes cascading problems. It’s not just the interference preventing me from fully installing the upper pulley, but raising the water pump location on the block not only raises the upper pulley location, but also the upper alternator bracket location, but worse, even if I engineered a smaller pulley that would not hit hard parts, the cooling fan that attaches to the front of the pulley is no longer centered to fit inside my 1968 FJ radiator shroud.
Does anybody know what kind of Toyota F engine block I got? Does anybody know about water pumps that sit higher up than usual? Has anybody ever seen anything like this? I will follow this post with pictures of both the original F engine in the Toyota and my remanufactured engine on the engine stand. The original engine is a dirty factory black, and the remanufactured engine has been painted in blue POR.
I will be tremendously grateful for help from anyone who understands early F engines.
My name is Chip Robie. I live in Stuart Virginia I have a 1968FJ40 with a three speed.
After a head gasket failure, I decided to do an F engine build, so my FJ would have a clean fresh motor. I ordered a remanufactured long block from an engine building service in Chatsworth California. They sent me an early F engine with casting ID F243255. This engine would be replacing the original FJ motor with casting ID F260456. The remanufactured engine comes as a long block, so I am responsible for adding all external engine parts: water pump, thermostat, alternator, oil, pressure regulator, oil pressure sender, intake and exhaust manifolds, distributor, oil fill tube, and so on.
I have been taking my time on this build, starting first with painting the engine block in POR. I just got to adding a new water pump and thermostat to the block and made an unfortunate discovery. The water pump outlet on the remanufactured F engine is not in the same place as the water pump outlet on the F engine in my FJ 40. By this, I am referring to the water outlet from the block and the surrounding threaded stud holes for the water pump body. The water pump threaded stud holes on my current engine sit right next to the timing chain cover. There might be 1/32 of an inch between the nearest stud hole to the timing chain cover. The water pump on my remanufactured engine, sits higher by about an inch and a half. The nearest threaded stud hole is 1 1/4 inches away from the timing chain cover.
The net effect maintains the water pump body orientation, but moves the whole assembly up by about an inch and a half. The top of the water pump body actually touches the lower thermostat housing mount at the block. Where the original motor has a gap of one and a half to 2 inches between the top of the upper pulley and the lower thermostat housing, the remanufactured motor has no gap between the top of the upper pulley and the lower thermostat housing at all. The top of the pulley wheel fouls the lower t-stat housing, preventing the pulley wheel from being fully screwed in to the water pump spindle plate. The pulley wheel will not fit straight on.
Other than the moved location of the water pump body, everything else looks identical between my early F engine, and the remanufactured F engine. However, the moved location of the water pump causes cascading problems. It’s not just the interference preventing me from fully installing the upper pulley, but raising the water pump location on the block not only raises the upper pulley location, but also the upper alternator bracket location, but worse, even if I engineered a smaller pulley that would not hit hard parts, the cooling fan that attaches to the front of the pulley is no longer centered to fit inside my 1968 FJ radiator shroud.
Does anybody know what kind of Toyota F engine block I got? Does anybody know about water pumps that sit higher up than usual? Has anybody ever seen anything like this? I will follow this post with pictures of both the original F engine in the Toyota and my remanufactured engine on the engine stand. The original engine is a dirty factory black, and the remanufactured engine has been painted in blue POR.
I will be tremendously grateful for help from anyone who understands early F engines.