Author Topic: A65 Lightning carbs  (Read 221 times)

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B Murphy

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A65 Lightning carbs
« on: 16 May, 2019, 21:58:16 »
Hi

I've just acquired a 1968 A65L project and could do with a definite answer to what are the correct Amal concentric carbs I should purchase. Logic would state 928mm because the inlets are 28mm but looking around on other forums they all state different. Amal state 930mm but the Britbikers forum prefer 28mm. At 300 a pair I need to get it right the first time if possible.

BobM

chaz

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Re: A65 Lightning carbs
« Reply #1 on: 16 May, 2019, 22:27:23 »
According to Amal web site 1968 A65 L would use 930/21 and 930/22.
But check actual year as they changed each year.

A cheaper option, ask your local bike shop for Wassell's pattern Amal. I get them and have them on my 1966 T100. Passivated to keep clean of fuel spill and probably around 200 a pair trade . Look just like Amal but with Wassell's name

B Murphy

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Re: A65 Lightning carbs
« Reply #2 on: 17 May, 2019, 18:16:17 »
Thanks for coming back Chaz, yes that's what I'm saying, Amal state one thing but the people that ride the bikes say something else.

BobM

Martin

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Re: A65 Lightning carbs
« Reply #3 on: 17 May, 2019, 19:56:23 »
The previous owner of my 1968 Lightning replaced his carburettors with 930/300 PREM on the right-hand side, and 930/301 PREM on the left-hand side. Main jet 180, N/Jet 106, Pilot RJ17. They needed some tuning when I took it over, but it runs, idles and pulls away nicely, so you might want to consider those.

B Murphy

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Re: A65 Lightning carbs
« Reply #4 on: 17 May, 2019, 20:16:11 »
Thanks Martin, do you know what the inlets are on yours? I will go with this if they are the same as mine 28mm. Only asking as some owners opened there's up to take bigger carbs.

BobM

A10 JWO

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Re: A65 Lightning carbs
« Reply #5 on: 18 May, 2019, 16:11:52 »
The BSA Bible states Amal R.930/70 right hand and L930/71 left hand. Section GD6 Published by International Triumph BSA ( Parts and Service ) Ltd. Printed in 1971.  8)
This may only apply to post 1971 ?
« Last Edit: 18 May, 2019, 16:13:48 by A10 JWO »

Editor

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Re: A65 Lightning carbs
« Reply #6 on: 18 May, 2019, 18:28:29 »
I would recommend the Amal Premier in accordance with the Amal spec. i.e R&L930s. I always buy direct from Amal, same price as dealers but you get it built by them and stamped with the correct numbers. Where you see a number R930/300 it's from a dealer that has made up the carb with the correct jets, slide, needle position etc. -Hopefully!
Chris

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Re: A65 Lightning carbs
« Reply #7 on: 18 May, 2019, 18:32:54 »
Oh, and another thing re the Wassell carb, one of our members who restores to a very high standard fitted Wassell carbs (customer supplied) to a Lightning and couldn't get it to run well at all. He changed them for Amal Premiers and it ran as sweet as a bird. Another member local to me put a pair of Amal Premiers on his Lightning and was amazed with the result!
Hope that helps.
Chris

chaz

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Re: A65 Lightning carbs
« Reply #8 on: 19 May, 2019, 08:01:35 »
maybe, but Ive not had problem with the Wassells carbs, at a fraction of the price.
as everything in the world pro's and con's of anything ask 100 people and you will get 100 replies all depends on overall condition of bike and what use its going to get.
Trial and Error, I still get problems working on Japanese bikes , each setting is different for each bike. I recently had a GSXR 600 running rich... previous owner couldnt get it to run right, he had fitted 1200 jets.