Morris Minor Owners Club

Apologies if this has been covered before, but I cant find anything. I know fuel vaporisation problems are not uncommon though,

Took Maisie for a run over to Helmingham show yesterday, and it was quite a warm day and a long queue getting in, so things started warming up a little obviously.

After a while the fuel pump started erractically clattering away, just like she does after shes been parked for a while hot, once we move it all settles down again.

Sure this is down to the hose looped over the top of the manifold, is it worth a longer piece of hose and running it round the side of the engine bay and onto the carb?. Never had a problem when running with starvation of fuel, just when getting warm.

Anyone else got any solutions to this one?.

Hose route has little to do with it, but no harm moving it away. The REAL cure is to mount the pump low down where it will have flooded suction from the tank.Oh - and throw away any silly filters have been fitted!

This has me thinking. Has anyone tried a pusher pump mounted from the rear ala Mini/Mgb?

The solution is to fit the mechanical pump as per the Austin and early MG.
The opening is all there and the lobe is already on the camshaft so in reality a simple job.

Indeed - if there is an opening in the block. Some blocks don't. And yes - some do fit a rear mounted pump, but it tends to be in the wet and muck, and seems easier to me to simply mount it lower down in the relatively dry engine bay.

Hmmmm, I though it was purely heat related when it built up under the bonnet, its only when it has sat warm for a while.

I have no extra filters or anything like that, only the strainer in the pump, and that was pretty good when I rebuilt the pump.

There is no opening in the block where the pump would go, plus I actually quite like the character of the SU ticking away, just not clattering like a machine gun. Its not causing any issues, just annoying.

Now I know this wont get to the root cause of the problem and wont be for anyone wanting to keep things original but I did a mod on one of my Commers to cure an engine bay heat issue. My problem was with a modified inlet manifold and it position directly over the exhaust, it works very well but had a problem cutting out when idling after a good run. Tried a heat shield between the manifolds but the heat build up in a very confined space still persisted, so I came up with this.[frame][/frame]



It's a Mini fresh air bulkhead fitting and trunking attached to a computer cooling fan set to come on with the ignition. It's drawing cold air from under the wheel arch and directing it in the general direction of the manifold - and it actually works, no more stalling after a run I did wonder if it would be better drawing warm air away, and maybe the fan isn't needed at all, but as it's doing the job I'll leave well alone.
Cant see any reason why the same thing couldn't be fitted to a Minor engine bay - except for originality of course[frame][/frame]

bmcecosse wrote:Indeed - if there is an opening in the block. Some blocks don't. And yes - some do fit a rear mounted pump, but it tends to be in the wet and muck, and seems easier to me to simply mount it lower down in the relatively dry engine bay.

I was thinking of mounting in the boot as the later B has. There was a shield to protect it as well.
All Marina blocks have the aperture in the block, but it is close to Minor mounts still possible though--as long as you don't have a 1 3/4 lcb to hinder fitting. None of my 3 Minor engine have the aperture--I thought they were for Austins only?

The fuel pump aperture cover plate Pt No: 2A265 is listed in the Morris Minor parts list and several of the Morris 'A' Series engines that have passed through my hands have had the fuel pump aperture. So not just limited to Austin blocks.
Phil

I too thought it only on blocks fitted to Austins.