Like Tree0Likes

exhausts for 496 engines ?

Reply
Old 03-13-2006, 05:26 PM
  #31
Registered
 
375stinger's Avatar
 
Join Date: Aug 2004
Location: louisville, kentucky
My Boats: 1990 42' cigarette revolution tri 850, 1984 18' checkmate 235 evinrude
Posts: 1,560
Default Re: exhausts for 496 engines ?

yeah that price didnt include mufflers either......., we looked at the 5in cmi switchables for our stainless marine gen 3s we got, but for 1600 each we dont need no stinkin mufflers im sure they are a great product, and the boat had cmis on it before, but we just dont have that kinda $$$ to spend
375stinger is offline  
Reply With Quote
Old 03-13-2006, 05:38 PM
  #32
Driver-441
Racer
 
TeamSaris's Avatar
 
Join Date: Aug 2004
Location: Lake George
My Boats: 32 Cobra Raceboat, 27 Avanti Raceboat 27 Kryptonite Raceboat
Posts: 11,348
Default Re: exhausts for 496 engines ?

Quote:
Originally Posted by 375stinger
yeah that price didnt include mufflers either......., we looked at the 5in cmi switchables for our stainless marine gen 3s we got, but for 1600 each we dont need no stinkin mufflers im sure they are a great product, and the boat had cmis on it before, but we just dont have that kinda $$$ to spend
Cant blame ya. We are jsut gettin back to the avanti. Work got in the way.
TeamSaris is offline  
Reply With Quote
Old 06-10-2006, 12:38 PM
  #33
Registered
 
Join Date: Apr 2005
Location: www.bajaboatowners.com
My Boats: 1995 Baja Boss 272(SOLD), 2003 Baja Boss 302(SOLD), 1992 Baja Boss .38 Special
Posts: 2,957
Default Re: exhausts for 496 engines ?

Well I look at it this way every engine Merc produces that is a HP motor has the CMI's on it. Well except the 496HO and to me thats comparible to the 502Mag which didn't have CMI's either, but the HP500 ,HP525,SC600,etc. all have the CMI's on it. I went with em. Yea expensive, but for HP gains to equal my 496Mag to a 496HO which if woulda been ordered at the time of boat build was over 5k upgrade so I'm money ahead and if dyno sheets are correct have the same HP now as a HO motor. So now I have a extra $1,000 per engine to spend on other mods such as labbed props to get me another 2-3mph so in all I'm thinking theoretically I'll gain 5-8mph with propping and CMI's. Not bad IMO.

I did research on blueprinting the hull and starting cost for that was 3k and people will beat the door down to have that done. Or throw 5k at a whipplecharger that VOIDS all warranties. So I still think the CMI's are a good bang for the buck usually in marine application it costs around $1,000 for 10hp so theoretically this system is 2k below cost
Irishtornado is offline  
Reply With Quote
Old 06-10-2006, 01:46 PM
  #34
Registered
 
Join Date: Dec 2002
Location: 1000 Islands
Posts: 4,783
Default Re: exhausts for 496 engines ?

The benchmark in my world has always been $1000 per MPH in that 65-80 MPH range, was a good buy (somewhat hull dependent of course).

In a single engine application they make the grade as a fair buy per mph (what +3 average?) it would appear but....

In a twin engine application 7-8K is a lot of coin for 4 MPH ?
That's right up there, at 2K per MPH. Too rich for my blood.

Quality product for sure. It has to be considered though that alot of owners are in 496 boats because of the price point not only of the boat, but insurance ect...

These just aren't hitting me as enough of a "bargain" in terms of additional performance (specifically twins), for a crowd that is "bargain conscious".

No offense to CMI or Fred, as he's the man to go to for these I have no doubt.

but you get what I'm saying right?.
Rippem is offline  
Reply With Quote
Old 06-10-2006, 02:57 PM
  #35
Banned
 
cuda's Avatar
 
Join Date: Sep 2001
Location: Deland, Florida
Posts: 25,191
Default Re: exhausts for 496 engines ?

Quote:
Originally Posted by blaniac
I went with th Revolution Marine exhaust for my twin Raylar 600 project, but we made some plumbing mods and they seem to work very well. They have a polished that looks nice and is very affordable or you can go the Raylar method mentioned above for probably even less money. I think the CMI system is a rip off personally.

What were the plumbing issues, having to drill and tap a spot for an exhaust probe? I've got a 454 that I want to change the exhaust on, but I want to be able to use it on a 496 when I swap in the near future.
cuda is offline  
Reply With Quote
Reply

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
26sonic
General Boating Discussion
48
05-05-2009 04:42 PM
bowtye8
General Q & A
4
08-08-2008 08:50 PM
26sonic
General Q & A
7
12-12-2007 01:31 PM
26sonic
General Boating Discussion
0
05-22-2006 10:51 PM
26sonic
General Boating Discussion
1
03-01-2006 09:49 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 05:15 PM.


Copyright 2011 OffShoreOnly. All rights reserved.