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-   General Boating Discussion (https://www.offshoreonly.com/forums/general-boating-discussion-51/)
-   -   Mercury Racing Engine Prices (https://www.offshoreonly.com/forums/general-boating-discussion/53168-mercury-racing-engine-prices.html)

Von Bongo 06-26-2003 08:31 PM
HP525 EFI - 500 HP
Key Features


Precision CNC machined 502 C.I.D. cast iron cylinder block.

thespy 06-26-2003 08:37 PM
525efi has alum heads and closed cooling. At the last boat show the merc rep told me $42k for the 525efi,its,sportlower. List price of course.

Uncle Toys 06-27-2003 10:53 AM
Originally posted by cigarette1
I'm not thinking about modifying my motors anytime soon
Great, then you have plenty of time to talk to numerous independent repair shops about bolting things on Merc "black" motors. I know one in Havasu you can start with. Next time your out there I'll introduce you.

WheelerDealer 06-27-2003 11:16 AM
BOATING FOOL

PUT 500 LONG BLOCK NEW IN MY BOAT,WITH 1 YEAR WARRANTY
FOR 15K. MERC HAS REBUILT FOR 8K, NOT SURE ABOUT WARRANTY.

WILL BE AT THE LAKE THIS WEEKEND. HOOK UP WITH ME AND ILL GIVE YOU MORE INFO.

adk61 07-15-2018 07:04 AM
Originally Posted by Von Bongo (Post 609842)
Cast pistons in the 496 vs forged in the 500 and 575, I don't know about the 525

All have forged rods but the blue engines are shotpeened

The 496 and the 525 of course have closed cooling
the 525 is closed cooling, H beam 4340 rods 4340 crank JE pistons blueprinted and factory sealed "Blue " ya pay big bucks for this

adk61 07-15-2018 07:11 AM
Originally Posted by Boating Fool (Post 609872)
It is my understanding that the 525 is a 500 with a few different parts. IE valve covers, manifold, closed cooling etc.

What is the HP rating on a GM HP3. I don't know much about them but have heard the computer is super in them as far as helping to keep the motors from denoting if a problem arises.

The problem with modifing a 496, the warranty would go like some threads around here........poof!:D
The ECU is a Motorolla 555 with a crank trigger, cam sensor and has knock sensors. timing and fuel delivery are controlled also aluminum heads with closed cooling vs cast iron on the 500 with open cooling... much MUCH better for turn key driving

Indy 07-15-2018 07:48 AM
Hope they weren't waiting for this info.


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