Offshoreonly.com

Offshoreonly.com (https://www.offshoreonly.com/forums/)
-   General Q & A (https://www.offshoreonly.com/forums/general-q-20/)
-   -   525s cantankerous??? (https://www.offshoreonly.com/forums/general-q/202658-525s-cantankerous.html)

LAriverratt 02-04-2009 06:44 AM

525s cantankerous???
 
I have been considering 496 ho's or 525efi's as I have see a few others...anyway... a dealer said that I should keep in mind that 525's are cantankerous????:rolleyes: really??? I don't think so what do you guys think??:food-smiley-007:

KAAMA 02-04-2009 09:57 AM

I DONT know about "catankerous"...and I have never owned a 525efi. The ones I have seen (or heard) sound great, but what really surprised me are the 525efi's idling charactoristics---they have some very BIG and ROUGH idling cams in them---at least that is the way they sound, but I suppose that is a matter of perspective.

LAriverratt 02-04-2009 11:30 AM

I think he's just trying to sell me what he has and that's a boat with 496 ho's that's why he say there cantankerous...i realise there racing engines and that's different form the 496 ho's but I can't see having problems as long as there serviced properly and not abused...much...:D

thumper038 02-04-2009 11:37 AM

can·tan·ker·ous (:evilb:)
adj.
1. Ill-tempered and quarrelsome; disagreeable: cantankerous

2. Difficult to handle::eek:

:Dwe had a pair 525s stock no mods and turn key, start, idle, run all day ? with proper service like you said but the 496 ho's are great too.my 2 cents
Thumper

Raylar 02-04-2009 12:11 PM

Both Great Engines
 
Mercury Racing HP525's are anything but cantankerous. Most of the hundreds out there run reliably and without major problems other than a small few where the CMI header issue might have shown up on some a while back.
496HO's are absolutly trouble free for many thousands of boaters who already have them.
Based on shear numbers they are the most reliable over the HP525 with the HP525 having a 100HP more power and a huge price premium over the 496's.
Add the Raylar HO525 package to your 496's and you've got the best of all worlds, 525HP plus with exhaust upgrades, a very reliable package and a significant savings in your wallet and some possible insurance savings.

Best Regards,
Ray @ Raylar

LAriverratt 02-04-2009 12:22 PM


Originally Posted by Raylar (Post 2792866)
Mercury Racing HP525's are anything but cantankerous. Most of the hundreds out there run reliably and without major problems other than a small few where the CMI header issue might have shown up on some a while back.
496HO's are absolutly trouble free for many thousands of boaters who already have them.
Based on shear numbers they are the most reliable over the HP525 with the HP525 having a 100HP more power and a huge price premium over the 496's.
Add the Raylar HO525 package to your 496's and you've got the best of all worlds, 525HP plus with exhaust upgrades, a very reliable package and a significant savings in your wallet and some possible insurance savings.

Best Regards,
Ray @ Raylar

:evilb: Ok...sounds and looks good if I go with 496 ho's, so is there a down side in mainteance...I.E. overhauls etc???

LAriverratt 02-04-2009 12:24 PM

What about price...I see call for pricing...how about an educated guess seeing as you are an advertiser...lol...:D

Griff 02-04-2009 12:26 PM

cantankerous????????

If a dealer used that word to me about anything, I would ask him to explain in detail, wtf he is talking about.

LAriverratt 02-04-2009 12:39 PM


Originally Posted by Griff (Post 2792874)
cantankerous????????

If a dealer used that word to me about anything, I would ask him to explain in detail, wtf he is talking about.

....didn't get an explanation...just about knew instantly it had to be a bunch of BS...:eek:...hence coming to some experts for a no BS explanation...:ernaehrung004: This is one place I get some real world info:ernaehrung004::ernaehrung004:

DollaBill 02-04-2009 12:58 PM

525's = Great engines

Dealer who says they are cantankerous = DUMBAZZ

Is it a Bayliner dealer that has one performace boat to sell?

LAriverratt 02-04-2009 01:10 PM


Originally Posted by DollaBill (Post 2792891)
525's = Great engines

Dealer who says they are cantankerous = DUMBAZZ

Is it a Bayliner dealer that has one performace boat to sell?

No... just a desperate dealer I suppose...:hitfan:...and what gets me is I have spoken to him a few times and let him know what direction I was going... hell he asked some of the questions...go figure.

DollaBill 02-04-2009 01:55 PM

I'd love to know who it is "off the record" of course. PM me. Hope it all works out

MarkDonzi 02-04-2009 03:31 PM

Had a pair of 525's in last boat and rebuilt both one 200 hrs, the other 300 hrs, Every problem I had with these motors were related to water from the headers leaking. CMI headers leak, you have to drain them every time out and test at least once a season. Other than that they are awesome motors!

liquidlounge 02-04-2009 05:23 PM

Alot of consumers are probably going to be happier w/ the 8.1's (not on this site though:cool-smiley-011:) The 525's idle isn't going to be as sweet as even a carb motor with the same cam because of the reversion into the intake at idle upsets the MAP sensors ability to read a coherant signal. The bigger problem for most that just want to enjoy a boat is the high spring pressures........200hrs between top end overhauls for a motor that $$$$ is pure enthusiasts territory. I think merc missed an easy chance to make the 525's a 500hr motor(and more reliable)...their propriatory heads should have had a 280-290cc higher velocity intake port, a cam profile that required maybe 370# of spring over the nose instead of 450# that has been tearing everything up (valvetrain wise) in the blue motors. A simple, cheap fix for now would be to adapt some PAC beehives to your heads; I would bet anyone that you would add 100-200 hrs. between top end overhauls. Take Care, Dave

DollaBill 02-04-2009 10:53 PM


Originally Posted by liquidlounge (Post 2793041)
Alot of consumers are probably going to be happier w/ the 8.1's (not on this site though:cool-smiley-011:) The 525's idle isn't going to be as sweet as even a carb motor with the same cam because of the reversion into the intake at idle upsets the MAP sensors ability to read a coherant signal. The bigger problem for most that just want to enjoy a boat is the high spring pressures........200hrs between top end overhauls for a motor that $$$$ is pure enthusiasts territory. I think merc missed an easy chance to make the 525's a 500hr motor(and more reliable)...their propriatory heads should have had a 280-290cc higher velocity intake port, a cam profile that required maybe 370# of spring over the nose instead of 450# that has been tearing everything up (valvetrain wise) in the blue motors. A simple, cheap fix for now would be to adapt some PAC beehives to your heads; I would bet anyone that you would add 100-200 hrs. between top end overhauls. Take Care, Dave

True. But then they wouldn't be cool ;)

jmeng 02-05-2009 06:53 AM


Originally Posted by DollaBill (Post 2792927)
I'd love to know who it is "off the record" of course. PM me. Hope it all works out


Yeah me too. Baton Rouge area dealer?

Raylar 02-07-2009 03:52 PM

LAriverratt:

Question? Are you pricing a new boat with various power packages or are you lookin at particular boats from dealer inventory or used boats with existing power?
With this input I will be happy to give you some price levels based on what your plans are.

Best Regards,
Ray @ Raylar

whataride 02-08-2009 08:40 AM

Pac Beehives
 
I have twin 525's with 130 hrs ..what should i be listening / looking for ?? and what are PAC Beehives ??

liquidlounge 02-08-2009 10:14 PM

PAC Beehives are valvesprings. See www.racingsprings.com Part#1520 would probably be a good spec for the Crane HR lobes. The 525 heads will probably have a 1.55" spring pocket (NEED to VERIFY this!!) so you will need to use an appropriate spring locator or spring cup. PAC will get you set up. Good Luck, Dave

whataride 02-09-2009 06:16 PM

Thanks liquid ...got any input on what to look for in a 525 ?? I recall being told not to run high octane in my 525"S just 89 ..am i dilusional ??

Sean H 02-09-2009 06:22 PM


Originally Posted by whataride (Post 2796552)
Thanks liquid ...got any input on what to look for in a 525 ?? I recall being told not to run high octane in my 525"S just 89 ..am i dilusional ??

87 in a stock 525

DollaBill 02-09-2009 06:32 PM


Originally Posted by whataride (Post 2796552)
Thanks liquid ...got any input on what to look for in a 525 ?? I recall being told not to run high octane in my 525"S just 89 ..am i dilusional ??

Thats one very nice thing about the 525's, you can run reg gas. Depending on where you are premium can be a pain in the azz


All times are GMT -5. The time now is 08:10 AM.


Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.