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Originally Posted by US1 Fountain
(Post 2393736)
My fear would be that you can pressure test them and they check good today giving you a warm fuzzy feeling, but next week they develop a leak and take a motor out????
Some people I know (very low numbers) have had them since the late 90's without any problems and others I know went thru sets like they were going out of style. |
1 Attachment(s)
I have installed a few sets of the Sport tubes on customers boats in the last few years and even bought 2 sets for my new motors ( not yet installed in boat). Now I am having second thoughts and I am considering going with Stellings and Ebaying the CMI's.
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I've had the same set of CMI E-Tops since 2001, fresh water only, no issues.
Not sure if it helps but I do drain them if the boat is going to sit for any length of time and drain while trailering. |
Brian -
You will not have issues on the sport tubes. The 525 was an inferior product and they had issues. Keep the CMI's there is no comparision. |
Pantera,
These are the Mercury version of the Sport tubes not the CMI's does that make a difference. |
from what i have heard some of the triple eng. setups were not supported properly causing problems on the 525's. My cmi's on my 500efi's are 2000 models, Leon did a repower on it a few years ago and i have not had any problems, i pull both sets over the winter and pressure test with air, so far no leaks, :cool-smiley-011: pulling them off in a week to check before season starts, i hope my luck holds
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what about 575s?
what kind of headers and what kind of problems? |
I wonder if the grade of Stainless Steel CMI is using is not as good of a grade that the others are using,being there corroding/rusting causing leaking???
That would explain why the salt water boats are failing more than fresh water |
Originally Posted by Strip Poker 388
(Post 2407178)
I wonder if the grade of Stainless Steel CMI is using is not as good of a grade that the others are using,being there corroding/rusting causing leaking???
That would explain why the salt water boats are failing more than fresh water |
Originally Posted by fountain40icbm
(Post 2407313)
I think my Dad can answer that. He has been through the 525 headers and the CMI E-top and I think has suggested to CMI on the correct material to use, but I will double check. His shop in an aerospace one so they know what to use that will make it last.
not sure on the grade but I seen some stainless rust, Maybe the higher grade stainless might not hold up to heat or get brittle and crack? |
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