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1988 Four Winns with Mercruiser 470?

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browniemix33

New member
Found at 1988 Four Winns with a Mercruiser 470 IO for $3500. Just had a alternator kit put in brand new summer of 2014. What do you guys think?
 
Ayuh,.... Sounds like an over-priced barge with the infamous 470,...

If it had Chevy power, it'd be a possibly fair deal, dependin on how rotted the hull is,...
 
That motor was made from half a Ford 460 V-8 with a custom aluminum head by Mercury. Some love 'em, some don't. I don't.

Jeff
 
fastjeff said:
That motor was made from half a Ford 460 V-8 with a custom aluminum head by Mercury. Some love 'em, some don't. I don't.

Jeff
Click to expand...

Ayuh,..... Ya got that backwards Jeff,...

It's an ole Ford iron head, on a Merc aluminum block, open deck, with liners,....
 
fastjeff said:
That motor was made from half a Ford 460 V-8 with a custom aluminum head by Mercury. Some love 'em, some don't. I don't.

Jeff
Click to expand...

The bore/stroke dimensions were similar to that of Ford's 460 cu in V-8.
The cylinder block was Merc's own design, and was aluminum.
The cylinder head was cast iron, and was from the Ford 460 cu in V-8.... of which explains the Intake ports and Exhaust ports being on opposite sides.

The camshaft drove the circulating pump impeller, which created the need for a special seal between the two.......... I.E., hot Engine oil on one side.... hot Ethylene Glycol on the other.
This alone is of poor design.



.
 
..."It's an ole Ford iron head, on a Merc aluminum block, open deck, with liners,...."

Right! Got her assbackwards. Still don't like 'em.

Jeff
 
Another 470 lover!

Jeff

PS: The outboard guys at Mercury had their way with the alternators on those, which us an OB style stator (that costs a fortune to replace).
 
Docksidemarineservices said:
walk away!
Click to expand...

So Chris..... just what is it that you're saying??? :D LOL




Actually, Merc's idea was OK with exception to several details. One being the charging system, and another being that silly camshaft circ pump impeller drive, and all that became necessary to keep engine oil on one side.... and engine coolant on the other.
These offered fairly decent horse power and were good torque producers.
Unfortunately, the bad outweighs the good.


.
 
My understanding on this engine is this.-------There was a fear on the part of MERCURY Marine that they would not be able to get big block cast iron engines for marine use.----Remember the gas crunch.---------It was an attempt to develop engines on their own using lighter aluminum blocks.
 
RicardoMarine said:
So Chris..... just what is it that you're saying??? :D LOL




Actually, Merc's idea was OK with exception to several details. One being the charging system, and another being that silly camshaft circ pump impeller drive, and all that became necessary to keep engine oil on one side.... and engine coolant on the other.
These offered fairly decent horse power and were good torque producers.
Unfortunately, the bad outweighs the good.


.
Click to expand...
There were some marketing reasons also for Merc to drop that product: very expensive to make - die casting block, heat treating and machining
crank and cam, trimming castings, and the 460 head. The GM V-6 became much cheaper to buy and marinize than producing the 470 in-house.
And competitors could offer more HP in the V6 at a lower price. Discontinued, I recall, in 1988, just about the time OMC and Brunswick were starting to buy up boat mfgs.
 
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