best exhaust manifolds
01-19-2007, 01:42 PM
#41
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Re: best exhaust manifolds
when cmi says standard bravo location tailpipes are all boats with bigblocks and bravos the same exit location?i guess my ? is if i order cmi and standard bravo tailpipes will it be a direct bolt-on?and what if i drain them after every use,will this help with the corrosion problem?
There is a diagram with dimensions on there web page from what I remember...
If you have a Merc BBC package with the stock cast iron exhaust manifolds hooked to pipes the lead straight (no bends) out the transom, they will have a "standard replacement package...
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01-19-2007, 04:14 PM
#42
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Re: best exhaust manifolds
One more, Keith Eickert Headers, Performance same as a true header, no welds to break, will last for a long time.
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Last edited by DiamondPerformance; 01-19-2007 at 04:18 PM.
01-19-2007, 11:21 PM
#43
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Re: best exhaust manifolds
Hey theres 2 of us that have Stainless Marine 's one for 10yrs and he only flushed at the end of the season and me going on 13yrs I flush after use and I have 670hp running through mine dry set up to boot.
01-20-2007, 09:01 AM
#44
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Re: best exhaust manifolds
Common with a few of my friend's boats too. Major $$$ to replace. I'm going with SM or EMI when I replace my stock manifolds/risers. I don't want the expense or potential issues with headers.
01-20-2007, 05:07 PM
#45
Re: best exhaust manifolds
These Stellings on my Tiger were manufactured in 1998 and are perfect in both function and appearance. It's important to note the boat has had meticulous attention paid to maintainence.
I can see purchasing true tubular headers if your application calls for it. If not, as others have noted, the warranty is FIVE times longer on most manifold riser combinations like EMI or Stainless Marine.
I can see purchasing true tubular headers if your application calls for it. If not, as others have noted, the warranty is FIVE times longer on most manifold riser combinations like EMI or Stainless Marine.
Last edited by Too Old; 10-24-2007 at 11:13 AM.
01-20-2007, 05:24 PM
#46
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Re: best exhaust manifolds
If I were going headers, the KE's would be my choice. It seems to me the design of them would be a lot less prone to failure, not to mention I think they look cool as hell. Some people think they are butt ugly.
01-21-2007, 06:01 AM
#48
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Re: best exhaust manifolds
Seems like most everyone citing stainless header failures indicate "cracking" (often at the flange is indicated) as the mode of failure. If "cracked" only why are these not just rewelded? If the mode of failure is not simply "cracking" then what is it?
01-21-2007, 06:08 AM
#49
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Re: best exhaust manifolds
The KE web site shows independant test lab dyno data that says that their manifolds out perfrom CMI headers and everything else for that matter. Anything to this?
http://www.keitheickert.com/products...ke-exhaust.htm
http://www.keitheickert.com/products...ke-exhaust.htm
