AJ28 with Steyr 236?

Discussion in 'Downeast Boat Builders (25 Ft+)' started by mweidl, May 12, 2019.

  1. mweidl

    mweidl Member

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    We found an AJ on the west coast for sale that has a Steyr 236 in it. Does anyone have any experience with the power package in an AJ or similar? I haven't seen an AJ with a Steyr in it and im not super familiar with them. Any insight would be appreciated.
     
    Last edited: May 15, 2019
  2. steveinak

    steveinak Captain

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    who's going to work on the engine if you have problems ? anyplace out there to get parts ?
     
  3. djmarchand

    djmarchand Captain

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    I am not a big fan of the Steyr diesel and those like it. Very high rpm and very high hp for its displacement. Also some Steyrs have a strange one piece cylinder and head casting.

    David
     
  4. jojobee

    jojobee Senior Member

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    To be fair, those engines are running in a ton of military boats and we hear little complaints. Look for a local dealer and don't worry about the rpm's. This engine could be 3600 or 4000 rpm's. The last I looked, Volvo, VW, Yanmar, Cummins, STEYR etc all had 3600-4200 RPM diesels in their quiver. They may not be heavy duty commercial but if you put 100 hours a year on the engine it take 20 years to get 2000 hours.
     
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  5. djmarchand

    djmarchand Captain

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    OK, fair enough. But why buy a diesel? A gasser will last as just as long, cost less than half but get 1/3 less fuel economy, but at 100 hours a year, who cares

    David
     
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  6. Old Mud

    Old Mud Captain

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    AND, you can repair them yourself for 1/4 the cost for parts. And you can "Hop em up" easy.:)

    Oh I forgot the cost of Gas is 30% lower than diesel.

    Ok back to the subject. I built a couple for a buddy, both gassers Yes they go good with either small block or big block. He did good at the races.
     
    Last edited: May 13, 2019
  7. WoundUpMarine

    WoundUpMarine Captain

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    I'll take one, 300hp would be great!
     
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  8. jojobee

    jojobee Senior Member

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    I'm not saying buy a gas or diesel. The OP asked about steyr and you commented about the rpm's. High rpm diesel engines at that hp range are the norm. That's all I'm saying.
     
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  9. djmarchand

    djmarchand Captain

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    Really!! How about John Deere, Cummins, Cat who all make 250 hp engines that produce that power at 2,800 rpm or less. Yanmar and Volvo do that and I wouldn't buy those engines either.

    David
     
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  10. Cookie

    Cookie Member

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    I have 1 You can call mack boring right now and they will ship your parts out today.
     
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  11. Fishonnelsons

    Fishonnelsons Captain

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    Well, if you can get parts that fast, and find a mechanic, why not?

    That boat seems like it’s in pretty good shape, reasonably priced, and only 400 hours on engine. Hell, you might not even need to do anything with the engine for years, hopefully. And if you can talk the price down further, think about selling the engine and switching her out if you’re that worried. Or even do that down the line, a 250hp or something
     
  12. proskirichard

    proskirichard Member

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    The engine above was designed to operate at low rpm with no water flow through it and not over heat or become damaged. That is part of reason for the mono block design also the intake and exhaust Valve are installed from the top of the engine including the valve seat like a fuel injector. Less down time for repairs.
     
  13. winterking

    winterking Captain

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    Used to be they were in a lot of the lifeboats on the cruise ships in fort Lauderdale. I had one in my 25 bhm, chartered for solid five years never a problem. I don’t know how things worked out, sold that boat quite a while ago, but I had no complaints.
     
  14. yanmar

    yanmar Captain

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    I would ask a professional or a former or current owner about Steyr and I believe you got all three answered in this thread ...……..
     
  15. yanmar

    yanmar Captain

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    I would imagine any shop that has access to a shop manual . Diesels are diesels just have differences in how they are built .
     
  16. WoundUpMarine

    WoundUpMarine Captain

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    I agree with you to a point, depending on the age of the diesel and the control system on it, IE tier 3 common rail engines, you sometimes will be walking in circles without a way to communicate with the ECM.
     
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  17. steveinak

    steveinak Captain

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    Get the any shop guy to work on any of these new electronic controlled diesels and see what happens when they need " special tool number or computer programs ?" In my experience the guy that owns the "we fix them all" shop might be great but the kid they send down to the boat to fix you up might of failed oil change class last week.
     
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  18. TechieTechie

    TechieTechie Member

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    OP, if it helps,

    I test drove an AJ28 with not so well maintained 350hp gasser, and it could have used more horsepower/better propping. Or, said another way, these hulls can handle significant HP resulting in some fast cruising speeds (see link), so it's a bit of a shame that the Streyr is significantly lower on the HP scale. Good news is that boat is in very nice shape and that repower is likely to last a good long while.

    AJBoats.com

    HTH....
     
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  19. Raider Ronnie

    Raider Ronnie Captain

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    Since when did Mac Boring start selling to the public ?
     
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  20. Islandpeter

    Islandpeter Member

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    I know lately AJ prefers the Yanmars for weight and power. I have a an 8LV370. The boat is truly unbelievable.
     

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