First of all this was not my attempt
What can you knowledgable Model A guys tell me about this attempt to balance this A motor ?
here are the facts:
- The motor has only about 5 hours on it after rebuild and balanced.
- no matter the positioning of the flywheel in relation to the pressure plate it would shake the fillings out of your teeth.
- using a fairly accurate kitchen scale, which only reads in pounds and kilograms, the pistons with connecting rods attached
were weighed with the following results #1 - 2.75 lbs., #2 - 2.5 lbs, #3-3.25 lbs, #4-2.5 lbs. lead had been poured into the rod fluting on # 1 and 3
- you will see the added weights on the crankshaft which had some holes drilled into them in various locations after welding in place.
- someone had mentioned the pistons and rods should have started out weighing within one gram of each other to get a balanced motor.
- someone else mentioned the builder was possibly using bob wires to hang the pistons and rods onto the weight added crankshaft
to balance the motor.
- I have never heard that or any other method of motor balancing so here is the chance for you guru's to give your input.
- The front babbitt was in real good shape, the rear babbitt looked good except for the thrust area which was not done properly as it had way too much play
- The crank journals looked real good except it hung up a bit when rotating freely and started binding around 270 deg. until 360 deg. then it freed up
again until it reached the 270 deg. area. either it has a bent crank or its out of align bore.
- Is this motor worth saving and if so what would have to be done to fix it. ?
- Can anyone describe in detail in laymens terms the proper procedure in balancing the rods/pistons/crank
What can you knowledgable Model A guys tell me about this attempt to balance this A motor ?
here are the facts:
- The motor has only about 5 hours on it after rebuild and balanced.
- no matter the positioning of the flywheel in relation to the pressure plate it would shake the fillings out of your teeth.
- using a fairly accurate kitchen scale, which only reads in pounds and kilograms, the pistons with connecting rods attached
were weighed with the following results #1 - 2.75 lbs., #2 - 2.5 lbs, #3-3.25 lbs, #4-2.5 lbs. lead had been poured into the rod fluting on # 1 and 3
- you will see the added weights on the crankshaft which had some holes drilled into them in various locations after welding in place.
- someone had mentioned the pistons and rods should have started out weighing within one gram of each other to get a balanced motor.
- someone else mentioned the builder was possibly using bob wires to hang the pistons and rods onto the weight added crankshaft
to balance the motor.
- I have never heard that or any other method of motor balancing so here is the chance for you guru's to give your input.
- The front babbitt was in real good shape, the rear babbitt looked good except for the thrust area which was not done properly as it had way too much play
- The crank journals looked real good except it hung up a bit when rotating freely and started binding around 270 deg. until 360 deg. then it freed up
again until it reached the 270 deg. area. either it has a bent crank or its out of align bore.
- Is this motor worth saving and if so what would have to be done to fix it. ?
- Can anyone describe in detail in laymens terms the proper procedure in balancing the rods/pistons/crank
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