Talk Morgan Forums Morgan Sports Cars Morgan Aero 8, 2012< Plus 8, SuperSports, Coupe & Aeromax Filling fuel

Thanks for the supporting info chaps

I can confirm that my old 4/4 had a simmilar shoe filling issues and was fitted with exactly the same cap. However when Stev Simmonds swapped it for a Monza type it was alot better.

So I was wondering if anyone had experience of Steve's Aero tank cap see Simmonds Aero Tank Cap

Hi Phil,
I had the Steve Simmonds Aero cap fitted to my Series 2 and it cured the problem completely. Nozzle right in down to the pump guard and withdraw at cut off and the tank is filled to full in one hit with no intermediate cut offs.
Brian

ooooh thats interesting. Thanks for the feedback Brian.
Looks like a fine piece of kit too. (well actually it looks liek the surroung form an MG fuel filler with a bespoke flap and a nice Aero design.

Is that engraved or a transfer?

I had this cap fitted by Steve to my Series I and had the same experience. Easi-fill.

My current car goes to Steve in November for some work and included is the fitting of a Monza cap, as I think that the Yamaha cap is even worse for filling than the one on the Series I and as BtG says, quite often ends up with petrol over the boot.

Enots - Monza Caps from Think Automotive

As you can see, the Aero cap is also marketed by the same people and may be more appropriate for an Aero 8 as it draws its inspiration from a fuel cap used on American world war two fighter aircraft.

Thanks chaps - I prefer the Aero style myself.

All I need to do now is persuade Beverley to let me have one for a Xmas pressie

.....any support at St Tropez most welcome

Tony
It is engraved.
Brian W

I guessed given the look of the site that it would be a proper job - but thanks for the confirmation. Damn! Another upgrade that I need to put on the list!

(with the s1 hood staps, the leather steering wheel cowl, and the M5 engine / supercharger etc etc etc)

I have the same problem on my MKI but have the same solution as Mr Tony, turn the pump handle 180 degrees and the problem is fixed. lent the car to my father and forgot to tell him the trick he came back red with anger about how long it to to fill it up.

I'll try that then.

Hello everyone. My 1st ever post here having recently bought a Series 5 Aero 8. I found this thread whilst researching my problems filling my car. Thought I'd weigh in with what I found out and what has solved (Well, at least vastly improved) the problem for me.

Fuel filling problems.
First, how a petrol station filler nozzle works.
The petrol station filler nozzle draws a small air pressure vacuum through the tiny hole at the tip of the filler nozzle underneath where the petrol (or diesel) emerges.
Internally, the gun uses this vacuum to activate the fuel flow valve through a diaphragm valve.
If the vacuum is present the valve can open, If there is no vacuum (for instance because the hole cannot draw air in when immersed in fuel or if the nozzle is covered somehow) the diaphragm valve springs shut (with the “click” that we are all too familiar with)
Getting around the problem
What we are searching for is the right combination of flow rate and nozzle position to keep the vaccum hole unobstructed. Lord knows what happens deep inside the filler tube, but there’s often a combination that just works …… It’s just that I’ve yet to discover is on my A8 !
My solution for now.
Part A
I’ve removed the boot floor above the tank and replaced the plastic OEM one way air vent valve on the pipe that goes from the tank back to the filler neck. One the face of it the valve worked, but the differential pressures involved are very small (about 14” head of fuel) so I thought I’d try a “deluxe” valve. The new one is billet aluminium with a steel ball and 8mm dia ports, it seems to operate very smoothly, cost was £18. This seems to have worked pretty well, I don’t seem to have improved fuel flow rate into the tank, but there is now MUCH less blowback.
Part B
I’ve found a very long thin tapered funnel that goes deep down into the filler neck – the filler gun discharges into the funnel from above and the funnel tends to rotate the fuel into a vortex as it goes into the tank. The tip of the funnel now discharges below the vent pipe mentioned above. So far so good, no blowback and a decent fill rate. The problem is that it’s pretty dangerous in terms of exposed fuel, potential for spills and attention from irate petrol station staff. This being the case I’m just filling jerry cans and pouring them in at home for the time being. The other good news is that the funnels are £3 !