HELP !!! My Merc 525 EFIs are over revving !!!
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tbev (09-13-2021)
09-05-2021, 03:02 PM
#22
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Hi, yes complete transom assembly with gimbals were replaced with the same drives I had before. I can’t sander the question on drive height however if the same drives were installed, I assume the answer would be a yes lol. Sorry I’m not fully familiar with boat mechanics, but if a learning curve lol
I really appreciate your input though thank you
I really appreciate your input though thank you
He was asking if the transom of the bost was changed. Not outdrive transom assemblies.
My wuestion - did mph go up with the rpm’s ? Stay same ? Go down ?
09-05-2021, 03:04 PM
#23
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09-05-2021, 04:38 PM
#24
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they just added the fiberboard on the inside then cud the holes through the fiberboard using the exterior shell if you wish as a template so the holes remain in the same place.
As for the speed going up with the RPM’s I have no clue, he said he backed off when he heard the warning horn go off.
I’ll see Tuesday when I open it up, I usually get 86, 87 mph fully trimmed at 5200 so I’ll see On Tuesday and get back to you guys for sure with an update
Thanks again guys I really appreciate your help
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SB (09-05-2021)
09-05-2021, 07:13 PM
#25
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I’m not sure what there set at but I can say that I have never been able to exceed 5200 and never had a problem running them for extended periods of time at 52 but now there revving 5400 and of course the warnings kicks in which is a pain in the ass but would prefer to fix the issue rather that just throttling back if ya know what I mean lol
I see above you answered it.
Last edited by sutphen 30; 09-05-2021 at 07:16 PM.
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Barryama1124 (09-05-2021)
09-05-2021, 10:50 PM
#26
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Hey bud, I can’t answer that because I haven’t tested the boat myself, it was taken out for adjustments by the mechanic. It was just what he told me and before I take it out, I wanted to run my problem thought offshore before taking it out this coming Tuesday.
I might change the props if I can gain some top end out of it so long As I don’t need a football field length to get planning LOL
I might change the props if I can gain some top end out of it so long As I don’t need a football field length to get planning LOL
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SB (09-06-2021)
09-06-2021, 07:03 AM
#27
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good morning, I guess we’ll find out on Tuesday LOL. On another note, do you have any idea what the cost is for rods, rockers and springs only per head? I just want to make sure I didn’t pay for the parts. Thanks in advance and have an awesome day
09-06-2021, 08:06 AM
#28
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You had all that work done and gained 200 RPM? Sounds like a win to me. Just about every story that begins with I had major mods/rebuilds ends with, "I lost performance" or "something isn't right".
Let us know how it goes after you run it yourself and the worse that could happen is you get new props and go even faster.
Let us know how it goes after you run it yourself and the worse that could happen is you get new props and go even faster.
09-06-2021, 08:23 AM
#29
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09-06-2021, 08:29 AM
#30
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You need to put " push " in front of this in your case, when you say rod's us gear heads think connecting rods which can be 10-15 times the price of push rods, without the brand name of the components replaced it would just be a guess on our part about cost, and I hope they did a valve job at the same time.
kidding aside, no I did not do a valance job cuz nex year I’m considering putting 560 or 565 twins in it in place of 525,s. Research showed that at the very least, springs, pushrods and rockers would suffice. I’m just curious what the cost should be compared to what I paid for the parts assuming there upper middle to high end quality parts 😎
