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4 speed box

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4 speed box

Post  andy-s on Sun Jun 05, 2016 4:20 pm

Is it possible to fit a 4 speed box to an 8e with a straight inlet manifold type cylinder and s25 carb? The problem is the carb bottom nut just hits the top of the gear box casing . I know the standard 8e 4 speed set up uses a cylinder with a bolt on cranked inlet type manifold . Is there a cranked manifold extension or would it have to be made up? and would changing the inlet length still work ok? Or is there another solution? I don't want to change the cylinder as its been rebored with new piston.
Thanks Andy
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Re: 4 speed box

Post  Jack Clegg on Mon Jun 06, 2016 9:48 am

I had the same problem when fitting a 4 speed box to a 3 speed type 8E. Had to get another barrel with separate cranked bolt on manifold. No other option I think. TTFN Jack
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carb manifold

Post  piston 197 on Mon Jun 06, 2016 5:46 pm

Cotton Villiers Spares ( google them) do a clamp on manifold to take an Amal carburettor, clamps to existing stub and has a flange to take a Concentric or Monobloc, you will have to tell him the diameter of stub, yours should be 28.6mm, the later carb stubs are 30mm
JH
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4 speed box

Post  andy-s on Tue Jun 07, 2016 7:42 pm

Thanks Jack and John , will give Cotton Villiers a try.
Andy
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Re: 4 speed box

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