Mercruiser 170 / 470

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grueng

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Can anybody tell me the difference between Mercruiser 170 and Mercruiser 470.
Don't they both have 170hp?

Grunde
 
Bondo

Bondo

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Re: Mercruiser 170 / 470

They've various names for the Same motor.....
 
Don S

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Re: Mercruiser 170 / 470

The engine are the same basic motor, as bondo mentions, the 470 was used between 76 and 79, while the 170 was used in 85 and 86. While the engines are both 3.7L alum. block, cast iron 460 Ford head, there were changes in the manifolds (intake and exhaust) and changes in the cooling system, and differences in the charging system.
 
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grueng

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Re: Mercruiser 170 / 470

Thank you!

I've been looking at a boat from 1986 with mercruiser 470. Does this mean that the engine is older than the boat?

Grunde
 
Don S

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Re: Mercruiser 170 / 470

It's possible, worse things have happened to 20 year old boats when confronted with an owner that wanted to make it go with the least amount of expense.
 
Bondo

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Re: Mercruiser 170 / 470

grueng said:
Thank you!

I've been looking at a boat from 1986 with mercruiser 470. Does this mean that the engine is older than the boat?

Grunde
Click to expand...

You really Should just Keep Looking..............

The 470s Weren't such a Great Idea in the 1st Place,......
And with Time passing,....... They're Problems are Growing.......

There's Alot of Boats out there,........

Your setting yourself up for Disappointment........
 
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8AteEight

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Re: Mercruiser 170 / 470

Bond-o said:
You really Should just Keep Looking..............

The 470s Weren't such a Great Idea in the 1st Place,......
And with Time passing,....... They're Problems are Growing.......

There's Alot of Boats out there,........

Your setting yourself up for Disappointment........
Click to expand...

Oh, I donno. Ive had my 170 for 4 seasons, and the engine was the only thing I havent had to work on yet. The closest problems were a cracked carb housing, and freshening up the outdrive.
Still runs like a top, even when I bought it with water in the oil. (changed the oil twice, and not a water problem since)
 
emmurphy50

emmurphy50

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Don S said:
Re: Mercruiser 170 / 470

The engine are the same basic motor, as bondo mentions, the 470 was used between 76 and 79, while the 170 was used in 85 and 86. While the engines are both 3.7L alum. block, cast iron 460 Ford head, there were changes in the manifolds (intake and exhaust) and changes in the cooling system, and differences in the charging system.
Click to expand...
The 470 was in use until at least '83 I think. Mine is an 81.
 
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