Go Back  Offshoreonly.com > Technical > General Q & A
Procharged outlaw 25, no getting power to prop >

Procharged outlaw 25, no getting power to prop

Like Tree5Likes

Procharged outlaw 25, no getting power to prop

Old 10-14-2015, 09:18 AM
  #1  
Registered
Thread Starter
 
Join Date: Jun 2011
Location: Grand Blanc, MI
Posts: 41
Default Procharged outlaw 25, no getting power to prop

I have a 1998 Baja outlaw with a procharged 454, bravo I, mercury bravo 28p 4 blade prop. I recently had Brent from BB lab and repair this prop, since Ive gotten it back I cannot get the boat to go over 53mph, I build almost full boost half throttle and am at 4000rpm, which means theres no more throttle I can give it without burning something up. When at 3/4 throttle I hit 4800rpm at 5lbs of boost and this is trimmed all the way down. So trimming up does me no good.

I have good fuel pressure, spark is good, pulleys are tight. I need some idea as to where to look to resolve this. Before the prop, I was running 80-82 at WOT at 5lbs of boost with quite a bit of trim.

Any ideas guys?
Thanks, Dan
xxxtreme36 is offline  
Old 10-14-2015, 09:26 AM
  #2  
Registered
 
Join Date: Nov 2005
Location: Wayland, MI
Posts: 387
Default

I would try a different prop first. Another possibility is that the drive got damaged when the prop did. I'm assuming you got the prop "repaired", not "tweaked" by BBlades.
Old Navy is offline  
Old 10-14-2015, 12:55 PM
  #3  
Registered
iTrader: (1)
 
articfriends's Avatar
 
Join Date: Jun 2004
Location: Frankenmuth
Posts: 6,395
Default

Your local to me, if you want to borrow a labbed 26 or a std 28 i have to try bfore you put boat away pm me
articfriends is offline  
Old 10-14-2015, 01:28 PM
  #4  
Registered
iTrader: (1)
 
Join Date: Jun 2009
Location: Kirkland, WA
Posts: 428
Default

That sounds like something else going on to create that boost at low rpm, boost is just a measure of restriction. Do you have mufflers?

I have switchable teague mufflers on mine that I run at LOW rpm, and if I forget to flip the switch I see similar results to what you are describing. Just a bunch of extra low rpm boost due to exhaust not flowing. Doesn't sound prop related to me.

Something to think about, good luck-
launchpad475 is offline  
Old 10-16-2015, 05:48 AM
  #5  
Registered
Thread Starter
 
Join Date: Jun 2011
Location: Grand Blanc, MI
Posts: 41
Default

I have a stock 28p prop i need to try hopefully this weekend. The prop and lower unit were new as of two years ago, i sent that prop out to BB to have a few edges with small knicks repaired and then had them lab it to the mods i have looking for them few extra mph. I do not have mufflers on this as the silent choice was removed when the procharger went on. The only changes made this year as opposed to last was removing the speedo and replacing with flush mount GPS and the prop being done by BB.

With that being said, the speedo wouldnt have anything to do with it i wouldnt imagine? I just unhooked the tube from the lower unit and zip tied it off so it wasnt taking on water anymore.

Thanks for the input guys
xxxtreme36 is offline  
Old 10-18-2015, 09:05 AM
  #6  
Registered
iTrader: (3)
 
Join Date: Oct 2007
Location: yorkville,il
Posts: 8,390
Default

it stands to reason that if no other changes were made the prop s the problem.as already suggested i would try a different prop to see what it does.
mike tkach is offline  

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


OSO Sponsor
OSO Advertiser
OSO Advertiser

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.

OSO Advertiser