Displacement of Volvo 4 cyl?

zvolv

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What is the displacement of the Volvo Penta 4 cyl engine? 1984 SOHC. Unsure of engine designation.

Is it 2.5L or 2.3L?

EDIT-Its an AQ125A. What is the displacement? Thanks!
 

Don S

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Re: Displacement of Volvo 4 cyl?

What is the FULL model number?
 

zvolv

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Re: Displacement of Volvo 4 cyl?

What is the FULL model number?

Unknown. No ID tags are left on this thing.

How many different displacement Volvo 4 cyls can there be? I just need to know if its a 2.5L or not.

If its a 2.5L I need to find rings and pistons. If its a 2.3L its getting a car engine.
 

Don S

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Re: Displacement of Volvo 4 cyl?

Even with only a choice of 2, if you don't know what you have, no one else is going to be able to tell you.

Remove head, measure cylinder diameter, and piston stroke. Then, Pi X r squared X stroke X 4 = displacement
 

zvolv

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Re: Displacement of Volvo 4 cyl?

Is there even a 2.3L boat engine? Its a pretty simple question that should have a simple answer. Knowing Volvo they use the same engine for a LONG time.
 

Don S

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Re: Displacement of Volvo 4 cyl?

Yes, there is a 2.3, there is also a 2.1 and a 2.5

Its a pretty simple question that should have a simple answer.

WRONG!
 

zvolv

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Re: Displacement of Volvo 4 cyl?

Well, it sounds like its getting a 2.3L car engine then. There is a 2.1L car engine as well. No 2.5L car engine though.

The previous owner really messed things up for my buddies. There are no ID tags on the engine. The carb isnt original and there is all sorts of other stuff that isnt original on the engine. Time to start over with clean slate so we know what we are working with.

Another budget boat build. Half off day at the junkyard is coming up and I can get a long block for $75.
 

zvolv

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Re: Displacement of Volvo 4 cyl?

I understand the different accesories and parts used in an auto vs. marine application. Thanks for being concerned though.

I would just use the block and head and put a set of marine gaskets on it and use all the boat accessories.

How can I test if the engine has bad rings and that is the cause for the oil consumption and not valve stem seals or guides?
 

zvolv

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Re: Displacement of Volvo 4 cyl?

It is an AQ125A. 2.1L

Anybody know the compression ratio? Or where I could find it?

If I need to swap internals like pistons or rings I know exactly what Volvos to grab em from if they have the correct compression ratio. The early 80's 240 Volvo.

Boat engine:

http://outdoors.webshots.com/photo/2503138170081104385WOCXUo

http://outdoors.webshots.com/photo/2447510280081104385sQSIDW

http://outdoors.webshots.com/photo/2437823080081104385ObeNga

Car engine:

http://www.j2mediagroup.com/john/Erik-b21ft25.jpg

http://www.j2mediagroup.com/john/erik-b21ft01.jpg

http://www.j2mediagroup.com/john/Erik-b21ft36.jpg

Damn I am doing a good job answering my own questions.
 

Don S

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Re: Displacement of Volvo 4 cyl?

9.3:1
 
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