V4 1/2 LS

Discussion in 'Chevy' started by pictsidhe, Jul 5, 2019.

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  1. Jul 5, 2019 #1

    pictsidhe

    pictsidhe

    pictsidhe

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    Not made by GM, but just came across an interesting V4 based on the LS series. 1650cc, 150lb. Peak torque of 126ftlb. At a piston speed of 2500fpm, power is ~135hp at 5600rpm. Would need a redrive. I saw in an article that the crate engines are $10k.

    Motus V4
     
  2. Jul 6, 2019 #2

    sotaro

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  3. Jul 6, 2019 #3

    mm4440

    mm4440

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    I have read that they are are still making the engines, but not the motorcycles. The price is a bit higher. they have similar features to an LS but are more compact than a 1/2 LS would be. Years back SCAT made a 1/2 sbc of 200 cu in. I do not know if they are still around. The Samson roadable aircraft prototype has a turboed Motus. With a good conversion, the Motus would be a great little experimental aircraft engine; light and compact.
     
  4. Jul 6, 2019 #4

    pictsidhe

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    The price is not appealling, but the weight and power look good.
     
  5. Jul 6, 2019 #5

    John wadman

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    I wonder how hard it would be to cut a block in half and rework water jackets, oil system etc. rockers, cams, all would have to be reworked.
     
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  6. Jul 6, 2019 #6

    pictsidhe

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    It's been done. The half VWs are air cooled engines that are basically sawn in half. Water cooling would involve welding up water jackets for a little more fun, that has been done too. The only one I can think of was a Merlin getting 10 cylinders lopped off...
     
  7. Jul 6, 2019 #7

    TFF

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  8. Jul 6, 2019 #8

    Bill-Higdon

    Bill-Higdon

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    GM back in the 60's made a 4 cylinder the Trophy 4 it used RHS bank of a 389 IRCC
     
  9. Jul 6, 2019 #9

    Angusnofangus

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    You remember correctly. At one time I had a 1961 Pontiac Tempest with that engine in it. Don't remember much about it except it burned just about as much gas as if it was a 389 and the distributor had a rattle in it at idle, something to do with the advance mechanism I think.
     
  10. Jul 6, 2019 #10

    pictsidhe

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    A direct drive V-twin 'LS3/4' is more like our size. 1540cc, 106ftlb. Maybe 120lb +rad if you make a lightweight manifold and pan. Stick a turbo on and it would be very appealing.
     
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  11. Jul 6, 2019 #11

    poormansairforce

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    This is where my mind has been hanging out.;)
     
  12. Jul 6, 2019 #12

    TFF

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    You always have the old Ford V4 like used in the SAABs and the Lancia V4s if you just need a V4.
     
  13. Jul 6, 2019 #13

    CharlieN

    CharlieN

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    You state this Motus motor is based on a GM LS engine, yet there is no dimension or part that is even close to any production GM engine.
    This looks to be a clean sheet design if not shared tech from somewhere else.
     
  14. Jul 6, 2019 #14

    pictsidhe

    pictsidhe

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    Yes, but they weigh about the same as a whole LS.
     
  15. Jul 6, 2019 #15

    pilot103

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    I just read an article this morning about the Ford V4 in the April issue of Classic Car, according to them it weighs 265 lbs.
     
  16. Jul 8, 2019 #16

    John wadman

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    Wonder if it would work in a pietenpol.
     
  17. Jul 9, 2019 #17

    mm4440

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    Yes it is a cast iron boat anchor as was the model A engine.
     
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