|
|
Post by ermaganish1995 on Jun 27, 2016 9:18:15 GMT -5
Hello, I ran into the problem my scooters crankshaft gave up on me cause i had put lots of milage with 72cc, tho the problem is i got a donor engine from a friend for cheap, the donor engine has the 16 tooth oil pump gear drive, meanwhile my scooter (Vento Arrow) has the 22 toothed oil gear drive, is it possible to change the oil pump assemby so it can work? or its maybe not advisable?..
quick help please, i really need my scooter to get to and from work
with best regards
|
|
richn312
Scoot Member
2014 Velocity 50cc
Posts: 72 
|
Post by richn312 on Jun 27, 2016 19:08:38 GMT -5
The 2 oil pumps are different from each other. The 33 tooth will actually have 1 dowel pin and have the shaft attached to it, and the case would have a spot for that dowel. The 47 tooth pump will not have this dowel pin and will not have a shaft built into it. I had this trouble before. I bought the 44mm crank from scrappy and i had the 47tooth and i needed the 33tooth. Well everything fit on, well as i thought it did. And when i took it for a drive it didnt seem right so i emptied the oil and saw the tan plastic and knew exactly what it was. It got chewed up and i had to change the case because the 47 tooth case would not let the 33 tooth pump fit because there was no dowel pin hole
|
|
|
|
Post by ermaganish1995 on Jun 28, 2016 7:46:02 GMT -5
The 2 oil pumps are different from each other. The 33 tooth will actually have 1 dowel pin and have the shaft attached to it, and the case would have a spot for that dowel. The 47 tooth pump will not have this dowel pin and will not have a shaft built into it. I had this trouble before. I bought the 44mm crank from scrappy and i had the 47tooth and i needed the 33tooth. Well everything fit on, well as i thought it did. And when i took it for a drive it didnt seem right so i emptied the oil and saw the tan plastic and knew exactly what it was. It got chewed up and i had to change the case because the 47 tooth case would not let the 33 tooth pump fit because there was no dowel pin hole Intressting, the oil pump from the 16 toothed crank had 1 dowel pin, meanwhile the oil pump fro my scoot ( 22toothed oil pump ) had two dowel pins in it, and the case had a " hole " for the dowel pins to fit into, tho im not sure its a " dowel pin " cause its like a hollow tube that alings the oil pump, cause on neither of the engines, there was no " pin " that was solid of sorts. Also, out of curiosity, might you know why they changed to higher toothed gearing on the oil pump? with best regards |
|
richn312
Scoot Member
2014 Velocity 50cc
Posts: 72
|
Post by richn312 on Jun 28, 2016 7:52:17 GMT -5
The 2 oil pumps are different from each other. The 33 tooth will actually have 1 dowel pin and have the shaft attached to it, and the case would have a spot for that dowel. The 47 tooth pump will not have this dowel pin and will not have a shaft built into it. I had this trouble before. I bought the 44mm crank from scrappy and i had the 47tooth and i needed the 33tooth. Well everything fit on, well as i thought it did. And when i took it for a drive it didnt seem right so i emptied the oil and saw the tan plastic and knew exactly what it was. It got chewed up and i had to change the case because the 47 tooth case would not let the 33 tooth pump fit because there was no dowel pin hole Intressting, the oil pump from the 16 toothed crank had 1 dowel pin, meanwhile the oil pump fro my scoot ( 22toothed oil pump ) had two dowel pins in it, and the case had a " hole " for the dowel pins to fit into, tho im not sure its a " dowel pin " cause its like a hollow tube that alings the oil pump, cause on neither of the engines, there was no " pin " that was solid of sorts. Also, out of curiosity, might you know why they changed to higher toothed gearing on the oil pump? with best regards The 2 pumps are different and the 2 cases are also different and meant for a specific oil pump. I changed the oil pump due to the fact i wasnt paying attention on the teeth of the new crank and the teeth for the pump. When the new crank was in i put the 47tooth oil pump on and it slid in first try so it didnt click to me that it was different. Went for a ride, didnt seem right, emptied the oil and tan plastic pieces were in there. I knew exactly what it was and when i opened it up the gear was bald. So i had to change the case to get the 33tooth oil pump to fit right because it would not fit correctly on the 47tooth case |
|
|
|
Post by ermaganish1995 on Jun 30, 2016 0:58:20 GMT -5
Intressting, the oil pump from the 16 toothed crank had 1 dowel pin, meanwhile the oil pump fro my scoot ( 22toothed oil pump ) had two dowel pins in it, and the case had a " hole " for the dowel pins to fit into, tho im not sure its a " dowel pin " cause its like a hollow tube that alings the oil pump, cause on neither of the engines, there was no " pin " that was solid of sorts. Also, out of curiosity, might you know why they changed to higher toothed gearing on the oil pump? with best regards The 2 pumps are different and the 2 cases are also different and meant for a specific oil pump. I changed the oil pump due to the fact i wasnt paying attention on the teeth of the new crank and the teeth for the pump. When the new crank was in i put the 47tooth oil pump on and it slid in first try so it didnt click to me that it was different. Went for a ride, didnt seem right, emptied the oil and tan plastic pieces were in there. I knew exactly what it was and when i opened it up the gear was bald. So i had to change the case to get the 33tooth oil pump to fit right because it would not fit correctly on the 47tooth case Alrighty, I've orderd the 22 toothed crank and hope for the best, not aloty of quality choises avalible for the 22toothed crank, i wanted to buy that one naraku crank that is alot better, but that is 16 toothed and does not come as a 22 toothed version, which is a shame.  |
|
richn312
Scoot Member
2014 Velocity 50cc
Posts: 72
|
Post by richn312 on Jun 30, 2016 4:41:40 GMT -5
The 2 pumps are different and the 2 cases are also different and meant for a specific oil pump. I changed the oil pump due to the fact i wasnt paying attention on the teeth of the new crank and the teeth for the pump. When the new crank was in i put the 47tooth oil pump on and it slid in first try so it didnt click to me that it was different. Went for a ride, didnt seem right, emptied the oil and tan plastic pieces were in there. I knew exactly what it was and when i opened it up the gear was bald. So i had to change the case to get the 33tooth oil pump to fit right because it would not fit correctly on the 47tooth case Alrighty, I've orderd the 22 toothed crank and hope for the best, not aloty of quality choises avalible for the 22toothed crank, i wanted to buy that one naraku crank that is alot better, but that is 16 toothed and does not come as a 22 toothed version, which is a shame. Try this website www.partsforscooters.com/All-Scooter-Parts/Crankshafts-and-parts they seem to have a great variety |
|
richn312
Scoot Member
2014 Velocity 50cc
Posts: 72
|
Post by richn312 on Jun 30, 2016 4:42:08 GMT -5
A great variety in "performance" and also stock parts too |
|
