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GP 150 carb

Technical help for Series one, two and three Lambrettas. Models include the Li, Li Special, TV, SX, GP, Serveta and API/SIL models

GP 150 carb

Postby kennystag » Sun May 03, 2015 7:54 pm

Hi
This is the pic of my carb. It says on it mik carb India, and down the bottom it says licence mikuni Japan. Anyone have any idea what size it is? And point me in the right direction on ebay that would do. Thanks for your help.
Stag
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Re: GP 150 carb

Postby rossclark » Sun May 03, 2015 10:10 pm

Probably a 22mm or 20mm, the original on a GP 150 / 200 should be dellorto SH2/22 those are like hens teeth and cost an arm and a leg.

Jetex, also Indian, build a copy of the SH2 but they are hit and miss and its advised to at least replace the jets with genuine dellorto.

The Mikcarb is a licenced copy of a Mikuni carb fitted as standard to later model Indian Gp / Vijay.

Are you looking for a whole new one or something to replace it?
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Re: GP 150 carb

Postby rossclark » Sun May 03, 2015 10:22 pm

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Re: GP 150 carb

Postby rossclark » Sun May 03, 2015 10:24 pm

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Re: GP 150 carb

Postby kennystag » Mon May 04, 2015 5:21 pm

Hi All,
How do you measure what carb you have, is it the venturi you measure.
Cheers
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Re: GP 150 carb

Postby rossclark » Mon May 04, 2015 9:12 pm

Yes, the diameter is the Venturi, try measure it at the manifold end and see what it is.
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Re: GP 150 carb

Postby kennystag » Mon May 04, 2015 9:16 pm

H and thanks. It was 27 mm approx.
Cheers
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Re: GP 150 carb

Postby rossclark » Mon May 04, 2015 9:37 pm

Sorry, internal?
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Re: GP 150 carb

Postby kennystag » Mon May 04, 2015 9:47 pm

Thanks mate,
That was the inside diameter.
Cheers
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Re: GP 150 carb

Postby kennystag » Sun Jun 07, 2015 7:12 pm

Hi,
The carb I am using on my sil gp 150 is a makuni anybody else have any info how good or bad they are, what would be a direct replacement if I were to change.
Cheers
Kenny
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