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Classic, Vintage & Veteran For Coventry and Meriden Models. Anything pre-Hinckley goes.

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Old 11-13-2012, 11:49 PM   #1 (permalink)
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carb options

Have decided to dig deep and buy new carbs - the slides in mine are kaputt judging from their condition.

What options do I have? I know the amal 2930 are available from amal, but I understand other makes are available too? Anyone any experience with other manufacturers?

Comments most welcome.

1979 T140E.
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Old 11-14-2012, 10:51 AM   #2 (permalink)
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Twice in the past I replaced Amal Concentrics with Mikunis. A Trident and Norton 850.They were kits bought from Brit Bike suppliers.
The Mikunis didn't leak fuel,no messy pre start tickling,but they didn't start any better.And although jetted decent out of the box,the Mikunis seemed to have less sharp response at lower speeds.Messing with jetting didn't help.
That's my experience on modified street bikes.
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Old 11-14-2012, 12:30 PM   #3 (permalink)
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i just added a new pair of Amal concentrics to my bike......LOVE THEM!
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Old 11-14-2012, 04:44 PM   #4 (permalink)
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The 2930's don't wear as badly as earlier versions and you can get harder slides, I have cleaned mine out and fitted new jets, needles and choke plungers and they run fine now after a bit of trial and error with different jets etc, mine is also a '79 T140E running standard airbox at present
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Old 11-14-2012, 08:24 PM   #5 (permalink)
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Hi Tribsa, wondering if they come in 32mm as opposed to 30mm. I have the standard airbox as well. Considering keihns,mikuni's or a better version of Amals. Haveing a parallel port with Mikunis may be difficult...
cheers Glen
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Old 11-14-2012, 09:03 PM   #6 (permalink)
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My problem was running the bike with NO air
filters - a rookie mistake and bad judgment on
my part after some bad advice. The bores are
scoured and slides worn.

I spoke to Amal yesterday and a 'new' amal
mk2 made in the UK may be available by Xmas
so I may wait for this. Can anyone recommend
a push type air filter or should I fit the original
type?

Do Mikuni and the like make carbs for the T140E?
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Old 11-15-2012, 03:07 AM   #7 (permalink)
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Quote:
Originally Posted by boyzee View Post
Hi Tribsa, wondering if they come in 32mm as opposed to 30mm. I have the standard airbox as well. Considering keihns,mikuni's or a better version of Amals. Haveing a parallel port with Mikunis may be difficult...
cheers Glen
Hi Glen they do a 32mm version its listed on their web site as a 2932;

http://www.burlen.co.uk/

Hope this helps. (I have found their support very good, one of the guys was around when they actually supplied these carbs when these bikes were still being made!)
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Old 11-15-2012, 09:55 AM   #8 (permalink)
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Quote:
Originally Posted by eddyfiola View Post
My problem was running the bike with NO air
filters - a rookie mistake and bad judgment on
my part after some bad advice. The bores are
scoured and slides worn.

I spoke to Amal yesterday and a 'new' amal
mk2 made in the UK may be available by Xmas
so I may wait for this. Can anyone recommend
a push type air filter or should I fit the original
type?

Do Mikuni and the like make carbs for the T140E?
Hi

I replaced my AMAL MKII's sometime ago now with Mikuni 32mm Round Slides on my T140E 1980 - I have also fitted a pair of off-set pancake air filters to accommodate the inlet rubbers ( on the head) that have a kick out in them to allow fitting the Mikuni's side by side (as these are wider than the AMALS) & all have been running fine for some time now - IMHO I would opt for Mikuni's over AMALS every time based on their performance up to now - I know some people have fitted PWK Carbs and sing their praises as well.

I would recommend the following jetting as a Starting Point for your bike if in standard trim With pancake Air Filters :

Pilot Jet : 17.5
Slide 2.5
Needle Jet Type 159
Needle Jet size P-2
Needle 6DH2
Main Jet 210
Air Jet 1.0

Let us know which way / Type of carbs you decided on .

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Old 11-15-2012, 08:03 PM   #9 (permalink)
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Quote:
Originally Posted by eddyfiola View Post
My problem was running the bike with NO air
filters - a rookie mistake and bad judgment on
my part after some bad advice. The bores are
scoured and slides worn.

I spoke to Amal yesterday and a 'new' amal
mk2 made in the UK may be available by Xmas
so I may wait for this. Can anyone recommend
a push type air filter or should I fit the original
type?

Do Mikuni and the like make carbs for the T140E?
I have a pair of Mikuni's (32mm) on my TR7RV, setting them up can be tricky, but once set up properly - I get great response at any throttle.
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