Mystery vibration

[Anthonyd516]

Hello all, feel like ive been posting alot of weird issues on here with good results so far. So lets try another. Over the off season up untill now i pulled the engine, replaced the transom assembly, replaced the outdrive (brand new), replaced the steering rack and all bellows are brand new. I took it for its first ride today and it was going great. Untill i took a hard turn at very slow speeds. I got a vibration that almost felt like ujoints. However its a brand new drive and in neutral i can go to any rpm and turn the wheel make the drive go up and down it will not make any vibration at all. I also checked the engine mount bolts to make sure it wasn’t pulling the lag bolts holding it to the stringer out. Anything above or below the 1500-2500 range there is zero vibration. Any ideas?

 

[Chris1956]

Hard turns can stress the u joints.

Also, does the outdrive tough the transom mount in a hard turn? I get a little vibration when my OB is trimmed all the way down. it might be the same cause.

 

[Anthonyd516]

Hard turns can stress the u joints.

Also, does the outdrive tough the transom mount in a hard turn? I get a little vibration when my OB is trimmed all the way down. it might be the same cause.

Hmm interesting thought. I dont know if it does but it is an sei drive. Do they do that?