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Old 05-28-2021, 09:58 AM   #1
Join Date: May 2021
Default Marine Conversions?

Good morning.

I've been milling about here and this seems to be the place to find answers.

I have dual AQ145A engines in my boat from 1984. I want to build up a spare engine for when the time comes to overhaul one of the installed engines.

I found a 1990 B230 Engine locally and was wondering if my externals would swap over to that block when the time comes? The B230 is a couple hours away so I haven't seen it yet. Just wondering if I should grab it up or keep on looking?

Thanks in advance,
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Old 05-28-2021, 10:46 AM   #2
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Join Date: Oct 2009
Location: Marionville, Ontario, Canada

Check to make sure your AQs are B23 or B230-based, because a lot of the early AQs were B21-based. The penta engines are just car engines with boat stuff on them, if they're standard displacement and not the stroked ones.
1984 244/ AQ140A / M46
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Old 05-28-2021, 03:05 PM   #3
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Join Date: Jun 2002
Location: S NJ, a suburb of Phila.

Volvo also modified the number four exhaust port to use an iron ring on it. I'm sure to use the B230 for marine use most stuff will bolt on but it may require some drilling and tapping of bosses on the engine block to bolt up the accessories.
1982 242 turbo. 338k miles. MVP coilovers and 3" exhaust. Flowed 405 with a V15. Cossie turbine housing with upgraded compressor housing. 90+, IPD remote oil filter. Some other goodness, too. Been lots of fun over 25 years. Restored in 2k. Now ready for a 2nd restoration.

1993 245 Classic, 430k miles, enem V15. IPD bars and chassis braces. Simons sport exhaust from Scandix. sbabbs ezk chip. Been a good road warrior. Genuine Volvo rebuilt leaky M47.
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Old 05-31-2021, 03:41 PM   #4
Join Date: May 2021

Thank you for the info.

I went ahead and bought it and the tranny for 200 bucks. Looks like a decent motor, not covered in oil even.

I think most everything from my B23’s will bolt right up from what I’ve seen so far.

Eng S/N B230F 1289255 17022
Casting 891004

Head 1000530
26 10 88 2 393

Anyone want the tranny? Automatic and free for the taking. Not sure what model.
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Old 06-02-2021, 08:07 PM   #5
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Join Date: Jan 2008
Location: Portland IN

AQ145 shows as B23.
Trying to understand stupid people is like trying to pick up a turd by the clean end.
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Old 06-02-2021, 09:34 PM   #6
Join Date: May 2021

Yes the AQ145A is based on a B23 block, I think the B230 block becomes an AQ151. Was just curious if the heads are interchangeable along with the marine externals. Thank you.
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