Go Back  Offshoreonly.com > Technical > General Q & A
Bravo Drives moving upon acceleration >

Bravo Drives moving upon acceleration

Notices

Bravo Drives moving upon acceleration

Thread Tools
 
Old 06-02-2010 | 06:04 PM
  #1  
Thread Starter
Registered
 
Joined: Sep 2009
Posts: 6
Likes: 0
From: Waterloo,IL
Default Bravo Drives moving upon acceleration

I have Twin procharged 454's around 520HP a piece in a 1998 31' IMP Viper. My problem is upon hard throttle the bravo drives push in nosing the boat in the water. It never happens upon take off just when I hammer down during cruise. Are the hydraulic rams on the drive not strong enough for the power I have? Any input would be great, Thanks
Neil 310 Viper is offline  
Reply
Old 06-02-2010 | 06:51 PM
  #2  
blue thunder's Avatar
Registered
20 Year Member
 
Joined: Nov 2001
Posts: 3,393
Likes: 6
From: IBX
Default

There is a high pressure and low pressure port on the trim pump. If you had the lines off lately, maybe you switched the "raise" line to the low pressure port.

If you have not been working on it, it most likely is a blown seal on one of the rams allowing the piston to move under load.
blue thunder is offline  
Reply
Old 06-03-2010 | 01:59 AM
  #3  
Griff's Avatar
Charter Member # 55
25 Year Member
Charter Member
Super Moderators
 
Joined: Oct 2000
Posts: 20,232
Likes: 2,482
From: Omaha/LOTO
Default

Do you have mechanical trim gauges or electric?????
Griff is offline  
Reply
Old 06-03-2010 | 05:13 AM
  #4  
Thread Starter
Registered
 
Joined: Sep 2009
Posts: 6
Likes: 0
From: Waterloo,IL
Default

It has the mechanical indicators.
Neil 310 Viper is offline  
Reply

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.