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Thread: Irvine 150


  1. #1
    Broken Wings's Avatar
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    Irvine 150

    I ran my Irvine 1.50
    stock OS 1.60 muffler
    Vess 17x6 propeller
    Sig Champion 15% nitro fuel
    medium hot OS 7plug
    9000 rpm
    Cylinder head temp never went over 160 Deg F.
    Transition was excellent, very smooth running engine.
    Club Saito member #715
    Club Jett member #12

  2. #2
    jeffie8696's Avatar
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    RE: Irvine 150

    Dang you, now Igotta get mine running.
    Club Saito # 677-Team Boca Bearings-Star Collectibles Muscatine-Glowhead Brotherhood #19

  3. #3
    jeffie8696's Avatar
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    Brand new engine, Factory idle bar plug, 5% SIG Champion fuel, Zinger 17X5 wood prop, rich break in tune saw 9000 on just the second tank. So anybody know if this engine is a torque or a revver?
    Club Saito # 677-Team Boca Bearings-Star Collectibles Muscatine-Glowhead Brotherhood #19

  4. #4

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    torquer for sure. I have ran mine on 15x14s. I dont remember the numbers nice and smooth engine but wasnt as strong as I thought it would be. The moki 135 had more power on the 16x10 size props.
    AMA # 126183
    Fly light, fly fast and fly low.

  5. #5
    jeffie8696's Avatar
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    I am used to my small high revving engines turning 10" props to 15,000 rpm. Just 9000 rpm to me is "unfamiliar". I guess like my four strokes I will be going with higher pitch props. So in your opinion was the Irvine a good running reliable engine worth keeping like all my others? Its hard for me to believe the 1.50 is underpowered when all my other Irvines (I have quite a few) are so excellent. Is 9000 a good static rpm to prop for with this engine? I see the 1.20 AX is listed with a 9000 rpm max useable rpm.
    Club Saito # 677-Team Boca Bearings-Star Collectibles Muscatine-Glowhead Brotherhood #19

  6. #6

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    I never pay attention to the max rpm they list. I ran my 120 AX engine over 11,500 on the ground. The irvine I had only had a couple of tanks thru it. Yes keep it and they are great looking engines. i both a OS 160 and this one and maybe I can run them this weekend. I usually run most engines open exhaust as that is a great indicator of its performance and a good standard. mufflers can vary greatly so open exhaust is best. The irvine 150 has a small carb so it will draw very well and make great torque at low rpm. I would prop it so its in the 8,000-8,500 range for most sport planes. I plan to make an adapter so I can run a Jett 120 muffler on it and see how it performs.
    AMA # 126183
    Fly light, fly fast and fly low.

  7. #7
    jeffie8696's Avatar
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    Mine has the OS adapter and ASP 1.80 muffler.
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    Club Saito # 677-Team Boca Bearings-Star Collectibles Muscatine-Glowhead Brotherhood #19


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