Q-500 Racing Discuss AMA 428, AMA 424, and any other variants of Quickie 500 racing

Rossi .40 carb?

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Old 12-05-2012, 11:51 AM
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jaka
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Default Rossi .40 carb?

I bought a used Rossi.40 on German e-Bay and wonder how to dismantle the brass part on the carb that houses the high speed needle?
Is it screwed from inside carb housing (does not look like it) or just warmed fast? (doesn't seem to be the case either).

There is a small slot/gap (0,2mm) between the carb housing and the brass part which houses the high speed needle. On my new Rossi .40 there isn't any gap at all.
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Old 12-05-2012, 05:01 PM
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Default RE: Rossi .40 carb?

Shrink fit assembly -
Why do you want to pull it out ?
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Old 12-05-2012, 06:34 PM
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Default RE: Rossi .40 carb?

older rossi .40 carbs are like that...the designs have evolved a some
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Old 12-06-2012, 07:51 AM
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Default RE: Rossi .40 carb?

Hi!
I'm a bit curious to why the gap is there...there is no gap on my new Rossi .40 carb.

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Old 12-06-2012, 08:24 AM
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Default RE: Rossi .40 carb?

If it were me I wouldn't worry about it, I would install a lager bore carby for starters and remove the liner gasket, lift the exhaust timing and stick it with 15% nitro - no castor...... It will boogie no worries.
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