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SEI after market stern drives

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Bobs boat

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I am curious if anybody has had any experiences with this product.
The reason being that at our shop in the last week we have had 3- Alfa 1 gen 11 SEI legs all with around
40 hrs. on them with shattered pinion gears . An coincidence - faulty run or the norm for the product ?
Thanks
Bob
 
Bobs boat said:
...3 - Alfa 1 gen 11 SEI legs all with around
40 hrs. on them with shattered pinion gears . An coincidence - faulty run or the norm for the product ?
Thanks
Bob
Click to expand...

Sounds like purchasing @ SEI found a "better price" on pinion gears, from a source that didn't get the heat treat and/ or metallurgy right.
 
Mine had poor grease in the u-joints which then seized up quite tight after a few hours run time and the drive was super grumbly - sounded like a bad gimbal.

As far as "shattered" gears. What does that mean? Brittle fracture?

Is the water level down in your local lakes? A brittle fracture one might describe as a "shatter", sounds more likely impact related.

If you can post good pics we might be able to shed some light on the cause of failure. As much bad luck as I had (0 for 1) , I would have a hard time saying it's material related.

What engine?.
with a 3.0 or V6. The gears have a pretty light load in the upper- it's all speed and not much torque. It's the prop shaft and lower gears that are carrying the high torque load.
A 5.7 can put a fair torque on the upper. Double the 3.0's

But high speed gears are often the ones that break when an impact occurs.
 
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Thanks for the input guys. I,ll go with the purchasing theory , or perhaps a run with faulty shimming on the vertical shaft.
Moot point now anyway . Ill just rebuild them , Was just curious about the product,s reputation as 3 legs with the same failure - low hours - and no sighs of impact have to make one wonder.
Thanks again
Bob
 
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