[Mgs] Replacing a float

Simon Matthews simon.d.matthews at gmail.com
Thu Jun 29 19:47:59 MDT 2017

Apparently, I need to be very careful. This car has the AUD 405 carbs,
for which the front  float chamber lid is N/A at Moss.

Anyone know of a source for these?


On Thu, Jun 29, 2017 at 5:57 AM, Richard Lindsay
<richardolindsay at gmail.com> wrote:
> Morning Simon, et al.,
> Use extreme care. On some carbs, the pin should exit only one direction.
> Examine it closely. You didn't state whether your carb is an SU or a Z-S (or
> Weber DGV) so I'm not going to guess. Generic thoughts follow.
> Independent of which carb, I use a pair of needle nose pliars and a couple
> of drops of peneteating oil. Place one pliars tip on the hinge pin, the
> other just behind the offending post pivot, and squeeze gently. Don't try to
> remove it on the first try (unless it comes free). Now move to the other
> pivot and try a gentle squeeze there. Any movement at all? Its bad news if
> one of those hinge points breaks, and they are a bit fragile.
> Is one of the two 'posts' split? If so, that is the side that is supposed to
> grip the pin. (Check me on this please.) Its also the more fragile post. As
> I recall only - because I haven't had a pin stuck badly - that is the side
> upon which one might start with the pliars. Do not try to release it's grip
> by inserting a tool into the gap split. Its just cast aluminum and will
> easily break.
> Good luck. This advice is only worth what you paid. But I do emphasize care.
> These bits break easily and ruin the part if broken.
> -rick, with a pile of carbed cars
> PS: If a post does break, check e-bay for a used replacement float bowl
> cover (if SU). I recently bought a pair of Z-S carbs on e-bay, to supply
> parts to replace one cracked carb casting on a GT6. $100 later, an otherwise
> big bucks problem was solved.
> On Jun 28, 2017 10:15 PM, "Simon Matthews via Mgs" <mgs at autox.team.net>
> wrote:
> I am trying to figure out how to replace a float in the carb on a '71 MGB.
> I can't get the hinge pin to come out. I have pulled on it, pushed on
> it, but it won't move.
> Any ideas?
> Simon

More information about the Mgs mailing list