stainless marine.......

money no object-EICKERTS!

go with the stainless marine mainifold's , you mit loose some bling but they will last a long long time . they come with a 5 year waranty i believe .
just dont run the cmi's when they leak real bad you will blow your motor and then it will realy cost ya
good luck

when my engine was on the dyno , mark highly recomends using the exhaust that is going to be used in the boat.

i have the gen 2's and was told that if i had cmi's or any tube type i would have seen more hp- but , i was looking for long term reliability.

i feel for the people who bought cmi's or have to keep dealing with issues of leaking..

those polished pipes sure do "bling up" the bilge , but seems for the added headaches that so many have been through it's not worth the hp...



that's just my look on it.......

I was told that CMI makes two types of headers , The one's that are leaking and the one's that are going to leak. :grinser010:

CMI Issues
 

Read this thread and all the posts . .

I have a set of CMIs on a small block Ford in a Donzi, brand new, with 5 hours use.

today I removed both headers and found 6 of eight tubes leaking water internally . .

the details are on Donzi.net at:

http://www.donzi.net/forums/showthre...383#post470383

This is a CMI problem. AFAIK Mercury Marine bought CMI last year, as I had to wait 11 months to get my system . . I selected CMI as no one else made anything for a SBF. At the time I was told by the dealer I dealt with that all production was focused on the 525 Mercury needs, and everything else was sidelined.
Regardless of production needs it seems that there is a major failure in quality and inspection. As a former fabricator of SS tube systems, this is NOT rocket science, but basic welding. I can see many flaws in the work, and feel that we need to take this a step further.

I will be discussing this with CMI this week, and am open to any direct discussions regarding these failures.

Please post me directly at: [email protected]

title the email with "CMI" . .

thank you,
Mario Langsten

Bow, NH

Good luck !!!!!

Mario,

I saw the pics at 5 hours those are down right scary

I have had a leaking header on each motor. THIS SUCKS!

They cost me 4 engines on my Cig with 525 efis

what years? models? all leak? or pre cool collar? only 03/04 years? new supports fix problem? stock merc version? or the cmi version is the solution?

whats the fuul story and solution?