1999 SONIC 358 Drive Spacer Recomendation
#1
Registered
Thread Starter
Join Date: Jun 2004
Posts: 118
Likes: 0
Received 0 Likes
on
0 Posts
1999 SONIC 358 Drive Spacer Recomendation
I am going to install drive spacers in my 1999 SONIC 358 twin 550HP/500 HP rebuilt engines with bravo 1 drives and 28 pitch 4 blade bravo props turning inward. I am experiencing prop blowout getting on plane and bow hop once its on plane.
Has anyone installed drive spacers on a 358 to eliminate a similar problem? Should I go with 1", 2" 3" spacers?
Any help is appreciated.
Thanks, Tom
Has anyone installed drive spacers on a 358 to eliminate a similar problem? Should I go with 1", 2" 3" spacers?
Any help is appreciated.
Thanks, Tom
#2
Registered
Join Date: Sep 2010
Location: Killeen Texas/Fort Hood
Posts: 787
Likes: 0
Received 0 Likes
on
0 Posts
I don't own a Sonic, but have been researching them pretty hard. Seems most folks with the porpoising issue trade up to a 5 blade Hydromotive, same as the Nordic folks. In the Nordic world those things cure damn near every negative effect known to man. You could always try to measure your X-dimension and see if a spacer is truly needed. Not sure what the happy height for a 358 is. Maybe someone will chime in. Good luck either way!
Jay
Jay
#8
I am going to install drive spacers in my 1999 SONIC 358 twin 550HP/500 HP rebuilt engines with bravo 1 drives and 28 pitch 4 blade bravo props turning inward. I am experiencing prop blowout getting on plane and bow hop once its on plane.
Has anyone installed drive spacers on a 358 to eliminate a similar problem? Should I go with 1", 2" 3" spacers?
Any help is appreciated.
Thanks, Tom
Has anyone installed drive spacers on a 358 to eliminate a similar problem? Should I go with 1", 2" 3" spacers?
Any help is appreciated.
Thanks, Tom
The notched transom puts the props in "cleaner" water when running in the rough stuff; which is what allows these heavy boats to carry the nose when needed.
Some folks have gone so far as to fill in the notched transom to run a true squared transom; when they run primarily flat water and have not been able to get the porpoise dialed out.