Like Tree0Likes

Merc 575 ???

Reply
Old 02-06-2008, 10:31 AM
  #1
Registered
Thread Starter
 
Join Date: Mar 2002
Location: Mentor , Ohio
Posts: 3,656
Default Merc 575 ???

Ok guys .... lets hear it ... 575's ... The good , bad , and ugly ???
LEOPAJM is offline  
Reply With Quote
Old 02-06-2008, 10:39 AM
  #2
Registered
Platinum Member
 
THEJOKER's Avatar
 
Join Date: Nov 2000
Location: Lake Lanier - N. Georgia
My Boats: Being a great husband and dad , boats , golf
Posts: 6,307
Default

I loved mine and they were very dependable. The whine at WOT was also a plus. They're pretty easy to upgrade too.
THEJOKER is offline  
Reply With Quote
Old 02-06-2008, 10:52 AM
  #3
VIP Member
VIP Member
 
Join Date: Nov 2002
Location: ankeny,ia.
Posts: 3,449
Default

No complaints here.

Neither use a drop of oil, and have
330 hrs on them.

The only bad I've heard is with the newer units
that have the B&M blowers, the rear bearings
in the supercharger have had a few failures.


Love the whine too
JaayTeee is offline  
Reply With Quote
Old 02-06-2008, 10:58 AM
  #4
Platinum Member
Platinum Member
Trade Score: (1)
 
KAAMA's Avatar
 
Join Date: Oct 2000
Location: Western Michigan
My Boats: A boat?....What boat??? How about a galvarnized warsh tub wit a toranady strapped own da rear!
Posts: 4,329
Default

Call Ben at Precision Marine Offshore in Grand Haven, Michigan....he has worked on a boat with tripple Merc 575sci's over the past several years....and has even upgraded/modified them. (616) 889-2234
KAAMA is offline  
Reply With Quote
Old 02-06-2008, 11:22 AM
  #5
VIP Member
VIP Member
 
BraceYourself's Avatar
 
Join Date: Feb 2006
Location: Oh
Posts: 1,030
Default

Gellner took a few from 575 to 750 pretty easy. A year or so ago I made the decision between 525 and 575. I chose 525 because:

1.) Unless you're going to make them 750's, the 3-4 mph difference between the two engines was not enough (on real hot days I've heard they run pretty much the same speed)

2.) didn't want to hunt for 91 octane (525 runs on 87)

3.) 525 is still being made, 575's are being phased out for the 600 and 700 package

4.) I'd rather have efi n.a. up to the 700 mark, then go blown beyond that, less maintence in my opinion

5.) More market on re-sale of 525 (again just my opinion)

Last edited by BraceYourself; 02-06-2008 at 02:21 PM.
BraceYourself is offline  
Reply With Quote
Old 02-06-2008, 11:33 AM
  #6
Registered
Thread Starter
 
Join Date: Mar 2002
Location: Mentor , Ohio
Posts: 3,656
Default

Thanks guys !

I have been told alotta guys a running 89 octane with no issues .... Any of you guys have experience there ???
LEOPAJM is offline  
Reply With Quote
Old 02-06-2008, 11:35 AM
  #7
Registered
 
Join Date: Sep 2002
Location: Manhasset, NY
My Boats: Sonic 358 Diablo
Posts: 1,942
Default

Love Mine so far.......do a search on here (OSO) and you will find plenty of info on them.......
Here's Johnny is offline  
Reply With Quote
Old 02-06-2008, 11:37 AM
  #8
Registered
 
wrinkleface's Avatar
 
Join Date: Jan 2003
Location: Michigan
My Boats: NT 477!! Ilmors Baby!!!
Posts: 8,022
Default

Had a pair in a 382 Formula, & w/ about 20 easy new hours the st. blower grenaded & took out the hole engine. Then all new long block and blower(NEW ENGINE) even though Merc would not call it that! same engine had other issues, don't remember exactly in 2nd summer. Fixed, then summer of my 3rd season w/ the boat & about 100 or so hours if I remember right, both right & left engines, the bearings in the pully's at the front of blowers went bad! End of that boat!!! Not real technical so hope my story makes a little sense. Very Very bad experience w/ these engines! & I am not hard on my stuff!!!!!!!!!!!!!
wrinkleface is offline  
Reply With Quote
Old 02-06-2008, 12:02 PM
  #9
Platinum Member
Platinum Member
 
Tom A.'s Avatar
 
Join Date: Nov 2002
Location: New Jersey
My Boats: Necessary Evil .............Donzi 38 ZrComp.............
Posts: 4,094
Default

Short time with mine so far but love them. Mine were freshened and bumped to 625 by Innovation before I got the boat. They start and idle extremely well for blower motors. The throttle response and blower whine are awesome and they are surprisingly fuel efficient. I ran the Sarasota Poker Run (80-90mph), burned 110 gallons and covered more than 110 miles. The boat tops out at 103ish.
Tom A. is offline  
Reply With Quote
Old 02-06-2008, 12:12 PM
  #10
Registered
 
Von Bongo's Avatar
 
Join Date: Dec 2001
Location: Iowa - Missouri
My Boats: 1997 Cig Kevlar - powered by Boyd
Posts: 3,904
Default

Quote:
Originally Posted by BraceYourself View Post

2.) didn't want to hunt for 92 octane (525 runs on 87)



)
stated was 92 when they first came out and was revised by merc to 91 later.
Von Bongo is offline  
Reply With Quote
Reply

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
dfealy
General Q & A
11
09-21-2007 05:07 AM
LEOPAJM
General Boating Discussion
20
12-19-2006 06:29 PM
mwdill
General Q & A
18
11-15-2005 04:54 PM
wildthing357
General Q & A
6
09-27-2003 01:12 PM
seabeach
General Q & A
3
09-22-2002 06:54 AM



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



All times are GMT -5. The time now is 05:39 AM.


Copyright 2011 OffShoreOnly. All rights reserved.