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Originally Posted by Meshikinquah
(Post 3960024)
FIXX,
Read some of his other post on this boat. It originally had 502 mag mpi engines that he sold and installed these (525's). So it is not the person that sold him the boat he should be talking to. I would be talking to the person that the engine package was purchased from. I think I read that these engines were supposed to be low hr rebuilds. |
Originally Posted by Meshikinquah
(Post 3959424)
Where in the heck did you find your used engine package. Too bad that your 502 mpi mags sold so fast, you could have just installed the full roller parts, intake and carb and been ready to roll with basically HP 500’s. Hopefully you will find something soon. If I did not go with the CMI exhaust I would go with the KE type like gil wet offshore exhaust. Hope your luck changes for the better soon…..
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Originally Posted by JRider
(Post 3959937)
If they are from cmi and not merc/cmi....good to go
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Lil Red is spot on. Heat cycles are what kills the headers. I got 260 hours out of my orig CMI's.Replaced them last year before I ever had a problem.Just felt it was the smart thing to do. Went with Gen X from CMI and have been perfect. Take a minute and contact Chris Morth at CMI [email protected]. Get a quick education on header maintenance and flushing procedure. Great guy and very helpful. Sold both sets of my old headers to members here without issue. just my 2 cents. Jeff
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WOW,
HyFive578 I am sorry I was wrong. I was reading another post with almost the same problem but it was not a 525 (stuck valve post). I would be talking with guy you bought the boat from. I agree with FIXX this engine problem had to be showing signs with that much damage. |
What are proper header flushing and maintenance procedures...How much more can there be?
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If I'm not mistaken, Dana Marine sells an adapter bracket for the 525. You could then put on ANY BBC header you wanted.
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Another CMI disappointment here. This is the second time that both my headers are cracked at the collector on my 05 525 package. They had approx. 200 hrs the first time and they were welded and lasted about 85 hrs. Not so sure that they can be welded this time. Still can't believe that merc and cmi don't step up and offer restitution in a joint effort. I realize that cmi gave merc what they asked for, but they should have denied the spec and said no. As far as I am concerned, they are both to blame. The fact that they have changed the spec, in my opinion is an admission of fault. Just my 02 for what it's worth.
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Originally Posted by raytart
(Post 4020906)
Another CMI disappointment here. This is the second time that both my headers are cracked at the collector on my 05 525 package. They had approx. 200 hrs the first time and they were welded and lasted about 85 hrs. Not so sure that they can be welded this time. Still can't believe that merc and cmi don't step up and offer restitution in a joint effort. I realize that cmi gave merc what they asked for, but they should have denied the spec and said no. As far as I am concerned, they are both to blame. The fact that they have changed the spec, in my opinion is an admission of fault. Just my 02 for what it's worth.
I have a set of 525 headers that were welded and pressure tested sitting in my garage in case you're interested. PM me if so. |
Originally Posted by neva satisfied
(Post 3960741)
What are proper header flushing and maintenance procedures...How much more can there be?
I'd like to know the same?!?!?! |
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