| Listed in parts books | Not catalogued by year yet |
1 5/32 MONOBLOC CARB 389 - 29mm - Jetting 330 main, 106 needle, #3 slide, #25 pilot
Amal Monobloc carburetor, 1 5/32 in (29mm) bore, part 389/18.5, pre-jetted with 330 main, 106 needle, #3 slide, #25 pilot.
This is an Amal Monobloc carburetor, the 389/18.5, sized at 1 5/32 in (29mm) bore. It comes jetted from the factory with a 330 main jet, 106 needle, #3 slide, and #25 pilot jet, so it's set up and ready to bolt on rather than needing you to source and fit jets separately.
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Monobloc carbs like this one were the standard carburetor fitment across a long run of British twins before the concentric style took over, and the 389 series covers a range of bore sizes for different applications. We don't have this one tied to a specific model or figure in our records, so if you're matching it to a particular bike, check your parts book or give us a call before ordering to make sure the 29mm bore and jetting suit what you're running.
Being a Monobloc, it uses the older float chamber and slide arrangement rather than the later concentric bowl design, so mounting and cable pull will follow Monobloc practice rather than a concentric's.
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