exhausts for 496 engines ?
03-13-2006, 04:26 PM
#31
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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 $$$ to spend
im sure they are a great product, and the boat had cmis on it before, but we just dont have that kinda $$$ to spend
03-13-2006, 04:38 PM
#32
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Re: exhausts for 496 engines ?
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 $$$ to spend
im sure they are a great product, and the boat had cmis on it before, but we just dont have that kinda $$$ to spend
06-10-2006, 11:38 AM
#33
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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
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
06-10-2006, 12:46 PM
#34
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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?.
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?.
06-10-2006, 01:57 PM
#35
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Re: exhausts for 496 engines ?
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.
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