Recommendations for Monza type cap

[Exminiman]

As title really, would appreciate some recommendations on a cap that will fit onto standard filler neck.

Dont want to get into brazing the flange on, but happy to cut off the standard end to the filler if required.

Can see that there are various types on the market ie https://www.newton-equipment.com/classic-200-range.html .....but not clear how they are fitted in most cases, would appreciate some pointers

Not bothered if it locks or not - must seal though, as want it to keep the fuel in if I find myself upside own

Will be used in conjunction with Newton Roll over valve https://shop.newton-equipment.com/colle ... ent-valves

[Aginley]

I got two of these off eBay. Expensive but beautiful

[timmy201]

I had this type on mine. There is a threaded collar that is pressed on, then you screw on the cap. These leaked pretty bad, and made it a real pain to remove the fuel tanks

[Exminiman]

I got two of these off eBay. Expensive but beautiful

Thanks, how did they fit on ?

[Exminiman]

I had this type on mine. There is a threaded collar that is pressed on, then you screw on the cap. These leaked pretty bad, and made it a real pain to remove the fuel tanks

that is a point I hadn`t thought of..if they screw on, there is potential for them to leak.

Having the cap on the end of a flexible filler neck with a couple of jubilees could work, but not much filler neck on standard mini...

[timmy201]

This type uses a standard locking cap inside the flip top cap. I assume they'd be better sealed against leaks. From memory they are held onto the tank neck with some grub screws, so they'd be easier to remove
https://www.minispares.com/sp227-petrol ... re-96-cars

https://www.minispares.com/gss154a-lock ... cap-vented

[Fanfaniracing]

I have a Aston style filler Cap wich sits on a screw on brass collar. To fit the collar i had to heat it uf with a blow drier and put it on the neck. Once cooled down it snug fits on the neck and it didn't leak for the past 4 years. I had also to take it away wich was a easy task with the right puller...

[1071 S]

I bought a chromed Monza from MSpares about 30+ years ago. The threaded collar taps on with a soft blow hammer and I made up a small bridge piece so it can easily be removed with a 2 armed puller. I've never noticed a leak. The cap has a rubber seal that sits on the top of the (machined brass) collar (see Timmy's second picture) so fuel never gets near the thread so zero chance of leakage.

I suppose if you were concerned you could put a little fuel proof sealer between the collar and the tank neck. I haven't and not had any leaks....

Cheers, Ian

[Aginley]

I got two of these off eBay. Expensive but beautiful

Thanks, how did they fit on ?

Buy a collar from mini spares that presses onto the filler neck.

[Exminiman]

Thanks for the replies folks, looks as if it pretty straightforward, probably over thinking it...

[Polarsilver]

next question how to phase the Aston Caps .. does the Flap open Down or Up or sideways .? . in my case opens down to make it easier to put a tiger in the tank from a can

[imack]

I sandwiched an O ring between tanks filler neck and the brass collar and then there's a paper gasket between the brass collar and the cap. Along with plugging the vent hole in the cap it's leak free, even with cracks in the 40 year old rubber seals and with the tanks filled to the brim.

[mini63]

Demon Tweaks. Enots Aston for Fuel, Monza for Oil.