Author Topic: Fitting Mikuni to BSA B50  (Read 2630 times)

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TM BILL

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Fitting Mikuni to BSA B50
« on: November 14, 2012, 02:46:08 pm »
My Metisse witch is powered by a modified B 50 motor is currently running on methanol via an Amal concentric carb .

I want to probably fit a Mikuni ( with choke ) and run it on petrol or Av gas .

Does anyone have any experience of fitting a Mikuni and jetting specs to start with .

Any other suggestions re carbs are welcome , the reason for not running methanol are easier maintenence and i dont have a convienient supplier .

Thanks Bill
« Last Edit: November 14, 2012, 04:26:19 pm by TM bill »

Offline Bamford#69

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Re: Fitting Mikuni to BSA B50
« Reply #1 on: November 14, 2012, 03:35:24 pm »
Hi,
these specs came from a CCM, to suit my 580, given to me from Rod Spry.
runs well, but not raced yet, still waiting for more bits,no mention of air jet size or fitment so presumed a 2.0
(hi 36 mm vm mikuni jetting for 580 ccm, slide 2.5 needle 6dh3,needle jet 159 p2 ,pilot 35 ,,main 200 cheers rod)
oh yes, had to hand make an  alloy manifold to suit
cheers

TM BILL

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Re: Fitting Mikuni to BSA B50
« Reply #2 on: November 14, 2012, 04:27:47 pm »
Thanks Michael thats exactly what i needed  :)

Offline Davey Crocket

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Re: Fitting Mikuni to BSA B50
« Reply #3 on: November 14, 2012, 04:44:28 pm »
Bill, get Brad to give you Bert Cavvell's ph number, he's the guru.
QVMX.....Australia's #1 VMX club......leading the way.

Offline Bamford#69

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Re: Fitting Mikuni to BSA B50
« Reply #4 on: November 14, 2012, 08:09:33 pm »
Hi,
I think Berts a bit Amal about giving his B50 secrets away,
LOL

Offline Davey Crocket

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Re: Fitting Mikuni to BSA B50
« Reply #5 on: November 14, 2012, 09:32:31 pm »
Put the bottle down Micheal.
QVMX.....Australia's #1 VMX club......leading the way.

Offline matcho mick

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Re: Fitting Mikuni to BSA B50
« Reply #6 on: November 14, 2012, 10:25:40 pm »
Hi,
I think Berts a bit Amal about giving his B50 secrets away,
LOL
;D
work,the curse of the racing class!!
if a hammer dosn't fix it,you have a electrical problem!!