Rebuilt floor question.

[Chuck4741444]

1996 21 kenner CC
I did a total floor stringers and transom rebuild. I drilled holes 24" ft. Apart. Then mixed my foam and poured it in the holes until it expanded out the others. Some times I didn't have enough, so i added more. I assumed it filled the void.
I used a level from side to side to indicate the vertical motor position. Then, I drilled the holes for the motor.
It took me a long time to build. Here's my problem. Boat sits level in the water. But when get the speed up around 20 to25 it start dipping on the left side bad. This going straight.
It will turn smothly to the right. But it when I turn to left it digs in and doesn't want to turn. I can turn because I have hydraulic steering. But this causes the left corner to be at water level or lower.
Would it pull like this because the motors is out of plumb?
Or has rain water got in and over my joist somehow when the boat sit through the winters.
If I rule out the motor being the problem. I will start drilling 2" holes on the left side look for voids and water.
I know its a long post but if anyone know how a tilted motor would effect the boats behavior.
In front of the boat is a bridge. Looking across the depth finder you can see how low the left side rides...

 

[airshot]

Have you adjusted the trim tab on the motor ?

 

[Chuck4741444]

Have you adjusted the trim tab on the motor ?

No.but changed motors a couple of months ago and did the same thing. I definitely with checking out. Im also running without my hydro foil. I have noticed the propeller throwing water up out of the lake on the right side. i related that to not have the foil installed

 

[cyclops222]

When a total stripping and rebuilding of a boat hull is done.
There is a very good chance the hull twists out of shape. Front to rear shape and spreading WIDER apart in 1 or more places.
Easy to do.

 

[airshot]

No.but changed motors a couple of months ago and did the same thing. I definitely with checking out. Im also running without my hydro foil. I have noticed the propeller throwing water up out of the lake on the right side. i related that to not have the foil installed

Is your motor deep enough ? Should not be doing that unless your hull is twisted. Your motor would need to be out of plumb a noticeable amount. And pics from the rear out of the water ?

 

[Chuck4741444]

When a total stripping and rebuilding of a boat hull is done.
There is a very good chance the hull twists out of shape. Front to rear shape and spreading WIDER apart in 1 or more places.
Easy to do.

Can this be corrected by adjusting the motor? Im to deep into this project to do anything but adjusting the motor..this was the first and last floor and transom I'll ever. It cost more than buying another hull. The man hours spent alone by myself rebuilding. I never thought about the possibility of it twisting..
Will a pic of the back help identify the problem? I found some information on measuring the holes. I measured it from the top of the boats hand rails with them level. It looks like Ishould measured from the bottom.
Thanks for the information, except twisting part. Jk thanks

 

[airshot]

Can this be corrected by adjusting the motor? Im to deep into this project to do anything but adjusting the motor..this was the first and last floor and transom I'll ever. It cost more than buying another hull. The man hours spent alone by myself rebuilding. I never thought about the possibility of it twisting..
Will a pic of the back help identify the problem? I found some information on measuring the holes. I measured it from the top of the boats hand rails with them level. It looks like Ishould measured from the bottom.
Thanks for the information, except twisting part. Jk thanks

Numerous posts and warnings about how big a job rebuilding fiberglass hulls can be.....when someone gets the itch to do so, they always think it won't be that bad ! I don't have enough fingers to count the people that ended up sorry for tackling their project after time and costs exceeded their expectations. If you boat is actually tilted while running, then either a weight change to correct it, or go with adjustable trim tabs, they would correct it but not cheap. Pics from the back while on the trailer and pics from the back while underway might help us understand this better.