Carb.

Information relating to the Matchless G2 or AJS Model 14 250cc Lightweight
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Carb.

Postby davehutch » Thu Aug 14, 2008 3:10 pm

Donít all laugh at once, I have made big mistake Measured the bore wrong itís a 1 1/8 not 1 1/16. Should use my glasses more!
Is this where my problem is the bore size I mean not my glasses
----Only a biker knows why a dog sticks his head out of a car window.

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Carb.

Postby Don Madden » Thu Aug 14, 2008 4:21 pm

1-1/8in seems large for a standard 250cc. Compare with the inlet port. Too large carbs for their mounting can cause severe tuning problems due to "Inlet Port Obstruction", (IPO). The step from the large, (or misaligned), carb to port interferes with the very low flow from the carb at low throttle settings.

Cheers, Don.

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Carb.

Postby davehutch » Thu Aug 14, 2008 4:27 pm

Itís defiantly bigger than then the inlet port. Canít believe I didnít notice. Do you think this has been the problem all along?
----Only a biker knows why a dog sticks his head out of a car window.

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Carb.

Postby Don Madden » Thu Aug 14, 2008 7:46 pm

Yes. Cheers, Don.

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Carb.

Postby davehutch » Thu Aug 14, 2008 7:48 pm

Thanks for all your Help.
Dave
----Only a biker knows why a dog sticks his head out of a car window.

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