OzVMX Forum

Marque Remarks => British (BSA, Greeves, Triumph etc) => Topic started by: SlideRulz on May 21, 2014, 10:30:53 AM

Title: B40 Carby.
Post by: SlideRulz on May 21, 2014, 10:30:53 AM

What carburettor should I be looking for that can be tuned for methanol and pre65 legal?

Title: Re: B40 Carby.
Post by: Rosco86 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)

Title: Re: B40 Carby.
Post by: HeavenVMX 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.

Title: Re: B40 Carby.
Post by: yamaico on May 21, 2014, 02:55:33 PM

Quote from: SlideRulz on May 21, 2014, 10:30:53 AM

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.

Title: Re: B40 Carby.
Post by: mike1948 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.

Title: Re: B40 Carby.
Post by: SlideRulz 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.

Title: Re: B40 Carby.
Post by: jimg1au 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

Title: Re: B40 Carby.
Post by: sprint76 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.

Title: Re: B40 Carby.
Post by: 211 on August 04, 2014, 08:02:25 AM

16.15.8.6  any type pre 75 round slide may be used.

Title: Re: B40 Carby.
Post by: pancho 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.