3.0L Mercruiser

BigRedTSI

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Jul 20, 2008
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I just bought a boat with a cracked block. Its got a 3.0 mercruiser and I need a block for it. Where can I find one?
 

Fishermark

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Oct 19, 2003
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5,627
Re: 3.0L Mercruiser

Well, forget trying to find an automotive replacement. Check Craigslist, ebay, etc for another 3 liter marine engine.

Oh yeah, welcome to the forum! :)
 

Don S

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Re: 3.0L Mercruiser

BigRed, you have a PM,
Welcome to iboats.
 

BigRedTSI

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Re: 3.0L Mercruiser

Thanks for the welcome. I am on many car forums as well as Salt water fish forums but this is my first boat forum. So there is no possibility of boring a 2.5 and using the 3.0 crank and pistons. The engine that was in the boat was not winterized and cracked. It is in a 99 Mirada. Also I was curious on more info on Miradas as I can't seem to find any.
 

Bt Doctur

Supreme Mariner
Joined
Aug 29, 2004
Messages
19,558
Re: 3.0L Mercruiser

If your close to nj you can have the block in my garage.
block was supposed to be good, never worked on it , just been sitting taking up space.
 

BigRedTSI

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Re: 3.0L Mercruiser

Where in NJ I am actually driving to NYC tomorrow(monday)? I am in western NY.
 

Don S

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Re: 3.0L Mercruiser

Do your buisness in a PM or email guys.
 

BigRedTSI

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Re: 3.0L Mercruiser

Could I use a 3.0 from any year or do I have to use a certain one?
 

Fishermark

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Re: 3.0L Mercruiser

If I'm not mistaken, all the 3.0 liter blocks are the same - just be sure to transfer the "stuff" from your current engine to the new block and you should be fine.
 

BigRedTSI

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Re: 3.0L Mercruiser

Is there a place I can look to find out what years had what blocks and if they changed them from year to year? I found a good deal on a longblock from a 94 searay and my boat is a 99 Marada If that motor would work I could pick it up for a good price and be up and running in no time.
 

Bondo

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Apr 17, 2002
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71,541
Re: 3.0L Mercruiser

Ayuh,...

Those vintages use the Flywheel mounted couplers,...

At the very Worst,....
You'll need the Flywheel from the New motor with it...
 

BigRedTSI

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Jul 20, 2008
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Re: 3.0L Mercruiser

Ok so i could just take the flywheel off the motor in my boat and be ok. I figured that but wasn't sure if they had made any changes to the crank. But from what I am finding in my research they are all the same.
 
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