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Author Topic: free air adapter plates. Yamaha ect.  (Read 8368 times)

HudCo

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Re: free air adapter plates. Yamaha ect.
« Reply #15 on: November 02, 2017, 02:02:45 am »
 Ahood what all would be needed for parts  to be done to biuld a 540f/a,      i possiably have a line on a 540 srv that would be a donor engine and what would be gained by turning this into a f/a  torque, and horspower, weight , reliability, for mountain rideing .   start a new post if need be that could be neat biuld

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    AHood

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    Re: free air adapter plates. Yamaha ect.
    « Reply #16 on: November 02, 2017, 06:02:53 am »
    Well I haven't yet committed to building an adapter for the SS 440 , 540.   If you wanted to build one you would be able to lose a lot of parts and complexity. You would need to find some free air heads to fit. Possibly some 250mx or yz heads could work but I haven't checked.   Can't really say how much power you would gain. You would need to fit some twin carb intakes. I have one set left of my custom intakes to put on twin carbs. Fits SS440. Should fit 540 too. You can use stock Reed cages or there is a Vforce3 cage that fits.
    AH Engineering   two stroke engineering solutions, welding, cnc machining,  fabrication, 3D cad design. digital programmable ignitions. custom aluminum sleeves.

    Colt340SS

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    Re: free air adapter plates. Yamaha ect.
    « Reply #17 on: November 04, 2017, 02:39:23 pm »
    Do you sell adapter plates for a Polaris 250 single?

    AHood

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    Re: free air adapter plates. Yamaha ect.
    « Reply #18 on: November 10, 2017, 03:42:22 am »
    Yes. More involved but they we're some of the first ones I did.
    AH Engineering   two stroke engineering solutions, welding, cnc machining,  fabrication, 3D cad design. digital programmable ignitions. custom aluminum sleeves.

    340RVFA

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    Re: free air adapter plates. Yamaha ect.
    « Reply #19 on: December 06, 2017, 01:46:49 am »
    how much for the polaris adapters

    AHood

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    Re: free air adapter plates. Yamaha ect.
    « Reply #20 on: December 06, 2017, 02:20:25 am »
    For the 440/550 motor? Or the 250 single?
    AH Engineering   two stroke engineering solutions, welding, cnc machining,  fabrication, 3D cad design. digital programmable ignitions. custom aluminum sleeves.

    340RVFA

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    Re: free air adapter plates. Yamaha ect.
    « Reply #21 on: December 06, 2017, 04:13:25 am »
    the 440 550

    AHood

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    Re: free air adapter plates. Yamaha ect.
    « Reply #22 on: December 06, 2017, 08:00:48 am »
    Pm me. I can't post prices here.  Thanks.
    AH Engineering   two stroke engineering solutions, welding, cnc machining,  fabrication, 3D cad design. digital programmable ignitions. custom aluminum sleeves.

    340RVFA

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    Re: free air adapter plates. Yamaha ect.
    « Reply #23 on: December 06, 2017, 03:44:03 pm »
    Pm sent

    no1froggy

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    Re: free air adapter plates. Yamaha ect.
    « Reply #24 on: November 23, 2021, 11:17:17 pm »
    adam do you make a adaper to put a gpx mag housing on a 643 gp lower end as in  case so a free air recoil can be used ??