Thread: which carby ?

The standard Series3 carby is fairly reliable, you can use Holden Carbs but they need the right jetting or you are just wasteing fuel

Originally Posted by wannalandy

Howdy all , I'm not to far from fitting the engine in my landy and starting it but the carby that is on it is worn out and had it's day . It currently has the Zenith mounted on but i have a single throat Stromberg i could fit to the motor . Is there any better carbies out there to suit the 2.25 petrol engine ?

urmmm IMHO the zenith is as good as it gets being simple economical (as economical as the 2.25 gets anyway) and with no problem when operating off road at angles.

ITs also easy to clean out if you happen to get crap in it and it can be done on the side of the road without too much stress.

Originally Posted by wannalandy

Howdy all , I'm not to far from fitting the engine in my landy and starting it but the carby that is on it is worn out and had it's day . It currently has the Zenith mounted on but i have a single throat Stromberg i could fit to the motor . Is there any better carbies out there to suit the 2.25 petrol engine ?

You can use the stromberg (HOLDEN) carbie , All that is needed is a adjustable main jet which is still available thru autobarn , repco or similar store

The jet goes in thru the bottom of the carbie and you adjust by a thumb screw in situ on the car

It is a good compromise

Alot of those old carbies have flogged shafts, if they can be rebushed they run better then ever, I had a strommy on a 2A and it was just never the same

You have the best carby already fitted, The Zenith 36IV has all the attributes that you need in a 4WD vehicle, designed to operate at various inclines and very simple to maintain........having said that please feel free to re-place it with one of your choice, properly jetted of course.... you will then need to dispose of the Zenith.....I run a voluntary association for the re-homing of unwanted and abandoned Zeniths, if you PM me I will supply the address to send it and will even cover the cost of the postage.

The Zenith or indeed the Solex carburetter perform perfectly well on this engine, provided they are in reasonable condition. I have no experience with the Weber. The problem with a lot of old carburetters of any type is simply wear on the throttle shaft and bearings. This can be rebushed and the shaft replaced, and then fitted with an overhaul kit the carburetter will be as good as new in most cases.

The Stromberg has often been fitted because of availability, but is unsuited to this application, as the mixture changes on slopes, causing either flooding or cutting out depending which way the track leans, so it is not a good idea if used off road.

I would simply fix the Zenith - if you are not able to do it yourself, there are still a few carburetter repair places about.

John

Thanks again for all the replys guys . It's the shaft that is flogged out and when the engine was running it was running that rich it was causing the engine to miss and fill my shed with black smoke .I didn't know there was a kit for the carby . thanks again guys

Originally Posted by wannalandy

Thanks again for all the replys guys . It's the shaft that is flogged out and when the engine was running it was running that rich it was causing the engine to miss and fill my shed with black smoke .I didn't know there was a kit for the carby . thanks again guys

If it is running rich it is likely that the top cover is warped. Remove everything from the top cover and carefully lap it flat with wet and dry on a flat backing (e.g. plate glass). Then install a kit, and check that the float level is correct.

This should fix the problem; make sure the o-ring is being compressed as the top is tightened and that it's seats are clean and smooth. The only other thing likely to cause rich mixture is a leaking needle valve (included in the kit) or wrong float height, although missing or loose jets could also cause it.

Rebushing the throttle spindle is more complex and requires machining capabilities, but this would not cause the rich mixture - more likely to cause a lean idling mixture, which is, of course, adjustable, and erratic idling (idling speed won't stay set).

John