classic motorcycle forum

Motorcycle Discussions => British Bikes => Topic started by: bigmike on January 03, 2008, 11:28:19 PM

Title: carb set up for pre unit t120
Post by: bigmike on January 03, 2008, 11:28:19 PM

I have a Tribsa with a pre unit bonnie engine fitted it has concenric carbs on at the moment which i think are a bit worn, as I cant get agood all round setting just wonderd if i could fit some other type and what jets etc to use

Title: Re: carb set up for pre unit t120
Post by: L.A.B. on January 04, 2008, 12:39:42 AM

If you are happy to use Japanese carbs then I suggest that you contact Allens Performance: http://www.allensperformance.co.uk/

Title: Re: carb set up for pre unit t120
Post by: henry_norton on January 04, 2008, 10:51:01 PM

Burlen Fuel Systems make new Amal carbs if you want to keep your Bonnie engine 'original'. (www.amalcarb.co.uk). They will build a carb to the exact specs of the original carbs supplied. The chopped monoblocks have been a bit hasslesome on my bike and I would definitely go for 'unchopped(!)' if given the choice although both types of monoblock are about twice as expensive as the equivalent concentrics. H_N