Aq170A/270

Discussion in 'Inboards' started by Bobby Johns, Jun 29, 2020.

  1. Bobby Johns
    Joined: Jun 2020
    Posts: 5
    Likes: 0, Points: 1
    Location: 24740

    Bobby Johns Junior Member

    Hello all,
    I have a 1971 Chrysler sport crown tri-hull in the process of being restored. It has a Volvo Penta B30 AQ170A/270. I'm looking for any help and advice regarding the engine. For some reason, there isn't a serial number tag to help identify any special modifications done to the engine. In the event that the rebuild is a no-go is there a updated engine that would work with this 270 outdrive? Any recommendations or suggestions are greatly appreciated.

    Thank you,

    Bobby
     
  2. bajansailor
    Joined: Oct 2007
    Posts: 952
    Likes: 246, Points: 43, Legacy Rep: 37
    Location: Barbados

    bajansailor Marine Surveyor

    Welcome to the Forum Bobby.
    I don't know anything about these old Volvo Aquamatic engines and their outdrives, but I would be surprised if it is still worth re-building after 50 years.
    There again, you might have a gem which has been hardly used over these 50 years

    There should be a lot of useful advice available on this Forum; you could also try the Practical Boat Owner section of the YBW Forum in the UK. There are some very knowledgeable Volvo experts on there who would almost certainly be able to help you.
    https://forums.ybw.com/index.php?forums/practical-boat-owners-reader-to-reader.13/

    You could also let this thread become a restoration thread for your boat - everybody on here loves threads like these, especially if you post some photos of your rebuild as well.
     
  3. fallguy
    Joined: Dec 2016
    Posts: 2,988
    Likes: 333, Points: 83, Legacy Rep: 10
    Location: usa

    fallguy Senior Member

    I have a used engine sitting in the shop that would work with the 270.

    ..the 125 I think...

    in Minnesota

    was not put up correctly for storage, but climate controlled...

    I paid $650 for it.

    It ran and had decent compression when I bought it. I could crate it for you and you could pay freight to WV and a couple hundred bucks.
     
    bajansailor likes this.
  4. Bobby Johns
    Joined: Jun 2020
    Posts: 5
    Likes: 0, Points: 1
    Location: 24740

    Bobby Johns Junior Member

    Fallguy,

    Thank you for reading my post and the 125 engine. I'm greatly appreciative. The 125 is definitely an option, but I'm trying to stay with the 170.
    Thank you,

    Bobby
     
  5. Bobby Johns
    Joined: Jun 2020
    Posts: 5
    Likes: 0, Points: 1
    Location: 24740

    Bobby Johns Junior Member

    Bajansailor,

    I appreciate your response. I'll check out the link. Thank you! What thread group would be the best place for the restoration photos?

    Thank you,

    Bobby
     
  6. bajansailor
    Joined: Oct 2007
    Posts: 952
    Likes: 246, Points: 43, Legacy Rep: 37
    Location: Barbados

    bajansailor Marine Surveyor

  7. brendan gardam
    Joined: Feb 2020
    Posts: 110
    Likes: 5, Points: 18
    Location: east gippsland australia

    brendan gardam Senior Member

    the b30 is a terrific engine, i have had 2 of them. as long as the head is not corroded they will last forever. very simple and robust. i don't like the triple carb setup, it is a pain to look after. i made an adaptor for mine and fitted a 2 barrel stromberg. you could match up the later v6 to that ratio leg i think but if the b30 is good i would be keeping it. the b20 which is the same with 2 less cylinders was popular as a rally engine. they souped them up to 270 hp .
     
  8. brendan gardam
    Joined: Feb 2020
    Posts: 110
    Likes: 5, Points: 18
    Location: east gippsland australia

    brendan gardam Senior Member

    when you get the head off have a look at the coolant passages they corrode in salt water and the head gasket can't seal properly. its pretty easy to spot.
     
  9. Bobby Johns
    Joined: Jun 2020
    Posts: 5
    Likes: 0, Points: 1
    Location: 24740

    Bobby Johns Junior Member

    Thank you for your response! The B30 is at the shop as of Monday. We'll see what they say. What V6 could I swap? Bobby
     

  10. brendan gardam
    Joined: Feb 2020
    Posts: 110
    Likes: 5, Points: 18
    Location: east gippsland australia

    brendan gardam Senior Member

    you could put a volvo / mercruiser v6 in. they are both based on chev engines. the 270 gear ratio is the important factor. you need to make sure it is suitable for the v6.
     
Loading...
Similar Threads
  1. lilmandavis
    Replies:
    2
    Views:
    3,078
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.