Opinions on Headers
10-19-2008 | 07:07 AM
#13
Charter Member #40
Joined: Oct 2000
Posts: 1,255
Likes: 104
From: Cape Coral, FL
From what I have seen, in salt applications with 900+ hp big tube set ups, you get to 225+ hours with either Stellings or CMI you can get ready to start chasing cracks at the collector and flanges. Once they start developing, they just keep on coming. I haven't heard of any official studies done nor do I expect a mfg to divulge their warranty or product health numbers.
10-19-2008 | 04:04 PM
#15
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Joined: Nov 2002
Posts: 2,038
Likes: 227
From: TR, NJ
Mercury headers are thinner and of a different alloy than the CMI headers. You guys really need to keep your facts straight.
I dont know of anyone that has had a failure of CMI headers, not the Mercury product!!!
If you pick up a set of 500 EFi headers vs an Elbow Top, you'd see what the difference is.
They are the best flowing exhaust on the market - period!!
Thats why Mercury buys them, except they make them out of a less quality alloy than the SS CMI does. And they are thinner!!
I dont know of anyone that has had a failure of CMI headers, not the Mercury product!!!
If you pick up a set of 500 EFi headers vs an Elbow Top, you'd see what the difference is.
They are the best flowing exhaust on the market - period!!
Thats why Mercury buys them, except they make them out of a less quality alloy than the SS CMI does. And they are thinner!!
Last edited by scarabman; 10-19-2008 at 05:05 PM.
10-19-2008 | 08:49 PM
#18
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Joined: Jan 2004
Posts: 2,777
Likes: 12
From: San Diego, California
I have not heard of a lot of CMI E-tops cracking and leaking, I cannot say that about regular or big tube CMI sweepers. Most blower motors will make better power with the big tube E-tops than with any sort of long tube header. I understand that the Stainless Marine High Torque III header/manifolds also work very well on blower motors.
Just my two cents.
Best Regards,
Ray @ Raylar
Just my two cents.
Best Regards,
Ray @ Raylar
10-20-2008 | 11:09 AM
#20
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Joined: Jan 2004
Posts: 2,777
Likes: 12
From: San Diego, California
Blower motors generally need different headers
I believe this post was started with the motor being a 540" blown motor. Header results for blower motors will be totaly different than those for a N/A motor. Just thought I would clarify so those not in the know would not get further confused.
Regards,
Ray @ Raylar
Regards,
Ray @ Raylar
