Thread: Busa Datsun

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    Busa Datsun
    #1
    Senior Member Akpilot's Avatar
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    I purchased a wrecked Hayabusa last January and was looking around for a Austin Mini Cooper to put it into. Well they are hard to come by and well just too expensive to purchase and ship. I came across this 1967.5 Datsun roadster and well the wheels started turning.
    I called Yoshi and picked his brain for a minute just before I bought the car, but now I'm wanting some of your opinions on what route I should go.

    Option #1,(discussed with Yoshi) Position the engine transvers in the car, hook up the output shaft to a drive shaft into Yoshi's reverser and then to the Rear axle. What I don't like is not having the ability to fine tune the gear ratio like changing a sprocket, one tooth makes a difference. The other is I'm not sure on what gear ratio I'm needing.

    Option #2, Put the engine inline and run a long chain to a Quaife FNR with a limited slip, this will complicate the build as I would need to build a IFS rear suspension, but this route I think would be more efficient and the ability to fine tune the gear ratio would be optimal. Down side it long chain, I think it would live but making repairs to a car 4 inches off the ground in the middle of the night not good.

    Opinions please.

    Ak
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    Re: Busa Datsun
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    Go with the drive shaft/Datsun rear end, if the ratios aren'twhat you want , there are a bunch of rear ends that would work.Dependable is what you need and if you build it bullet-proof thats what you'll have.Cheeper in the long run!!
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    Re: Busa Datsun
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    Senior Member Duane's Avatar
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    This sounds like a cool project. Is that roadster the two seat sports car that we saw in the states? Some pics of that if you please. Is there a quick change gear rear end that would work for this car? The shaft set up seems like the way to go. Is there enough room between the front shock towers for this engine to squeeze in?
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    Re: Busa Datsun
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    The Bob Ross of MBN Bullnerd's Avatar
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    "Speed is time-time is speed"-Dennis Hopper

    Quote Originally Posted by TALON View Post
    did you use a special bigfoot camera or something ,you know all blurry could be a tree stump kinda thing .
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    Re: Busa Datsun
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    Senior Member Duane's Avatar
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    That's the one!
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    Re: Busa Datsun
    #6
    The Bob Ross of MBN Bullnerd's Avatar
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    Cool little car,good luck AK,sounds like a fun project.

    No chains in my opinion.
    "Speed is time-time is speed"-Dennis Hopper

    Quote Originally Posted by TALON View Post
    did you use a special bigfoot camera or something ,you know all blurry could be a tree stump kinda thing .
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    Re: Busa Datsun
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    Intense Moderator Rat4020's Avatar
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    Sounds like a cool project AK Im with others about the chain thing. They didnt work well on the first Polaris atvs .
    The question is not if its gona roll. Its when ..

    That be some kind of church cruzzer or commuter bike thingy ?
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    Re: Busa Datsun
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    Seņor Banned Member Chikin's Avatar
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    Well the drive shaft idea is the same as a dwarf car / legends race car. Except they don't run the inline reverse. I run a Toyota corolla diff and well they make a few third member gear sets.
    3.31
    3.42
    3.58
    3.73
    3.90
    And I believe 4.10 but I could be wrong. I'm tired and well I will look into that.
    But it's a 1980 Toyota corrola rear axle.

    So are you sure that option 1 has only 1 gear set for that rear end. Or may it be possible to get another gear set for that rear end. Or hey you could change it to a dwarf car rear axle and have a ton of options. Hey you could even get to cut the axle and lengthen or shorten it to fit that car too.

    I want to say that the axle jig is 139.$ on eBay. It holds the axles so you can weld them your self.

    I say this and know it's more work to have to do that. But it would give you a range of gear sets to play with.
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    Re: Busa Datsun
    #9
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    I have the Quaife FNR box with lsd in my Busa buggy. It's about a 1000# and about 200hp buggy. Not the best setup, I just had to replace mine. It was almost $3000. with shipping and took almost two months to get from the UK. In Quaife's defense it did take a high RPM shift in a low gear to break it, but it distroyed it and I'm not happy about having to worry about how I shift!

    Definatly had to change how I drive going from top loader Ford in a jeep to the buggy, exspensive lesson, lol
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    Re: Busa Datsun
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    Senior Member deaner's Avatar
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    Go with the shaft and if the gearing can't be changed in the rear end shorten drive-shaft and add a manual trans.
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