Author Topic: B40 Carby.  (Read 4417 times)

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Offline SlideRulz

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B40 Carby.
« on: May 21, 2014, 10:30:53 AM »
What carburettor should I be looking for that can be tuned for methanol and pre65 legal?

Offline Rosco86

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Re: B40 Carby.
« Reply #1 on: May 21, 2014, 01:40:54 PM »
If you go Amal I think it would have to be a monobloc type as concentric were released in 1966 (from their website)

HeavenVMX

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Re: B40 Carby.
« Reply #2 on: May 21, 2014, 02:20:09 PM »
VM Mikuni is completely legal and presently fitting one to my BSA which may someday see the light of day ::)

16.15.8 Acceptable machines and components: Pre 65 Solo
16.15.8.6 Carburettors of any type pre 75 round slide may be used.
« Last Edit: May 21, 2014, 02:22:17 PM by HeavenVMX »

Offline yamaico

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Re: B40 Carby.
« Reply #3 on: May 21, 2014, 02:55:33 PM »
What carburettor should I be looking for that can be tuned for methanol and pre65 legal?
Hey Steve, I didn't think B40 and pre 65 went in the same sentence together :-\
I hope they do because I'll be in there with you.

Offline mike1948

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Re: B40 Carby.
« Reply #4 on: May 21, 2014, 04:32:52 PM »
Amal monoblock and Concentric mk1 are both allowed in pre 60/65.  The concentric is still available new from the UK, & reasonably priced.

Offline SlideRulz

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Re: B40 Carby.
« Reply #5 on: May 21, 2014, 04:56:15 PM »
If the rules as stated by HeavenVMX are correct I'll def be going for a Mikuni, I've found them easy to set up before, off hand what size should I be after?
Yeah Pete, that old chestnut again about dizzy and points models.
Initially mine will be in the Elstar for Pre70 and Slider classes until I get my B50 engine sorted then the B40 will go into a C15 frame so we both can give the pre65's a run.
Thanks to everyone for your input.

Offline jimg1au

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Re: B40 Carby.
« Reply #6 on: May 21, 2014, 05:38:49 PM »
i run twin mikunis on my pre65 triumph.only pre60 is were you must run amals
i dont think there would be a problem with any b40 in pre65 as long as the meeting wasnt in qld.
just my opinion
jim
pre65 triumph rider

Offline sprint76

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Re: B40 Carby.
« Reply #7 on: July 20, 2014, 07:25:41 PM »
Steve, I am running a 32mm Amal on my B44. I did try a 34mm mikuni on methanol but it felt a bit too big.

Offline 211

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Re: B40 Carby.
« Reply #8 on: August 04, 2014, 08:02:25 AM »
16.15.8.6  any type pre 75 round slide may be used.

Offline pancho

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Re: B40 Carby.
« Reply #9 on: August 30, 2014, 03:57:02 PM »
If you go the old Amal Monoblock all the old Amal TT Fuelly jets you probably have in an old wardrobe somewhere will fit! If not I have Quite a few bran new ones.
  Plus it will be genuine pommy junk not wierd Jap stuff!
cheers pancho.
dont follow me i'm probably off line!