E: Engine Verdigris

[Speedtwin]

All ewarts failures causing leak past have been from cork sealed units drying out.
Did replace with the replacement modern bores from the spares company, not impressed with these very tight fit unusable really.
Did all the usual to free them up but after a while back to very tight hard to open.
The ewarts are in the box for the next owner.

 

[highbury731]

There's a Ewarts round sliding tap on my Norton. On a hot day, the main tap slides closed, rather too often. It has cork seals on it. Are the rubber (viton?) ones sold by VOC Spares better?
Paul

 

[Speedtwin]

Nope they may seal better but are a pain to fit into the bore of the tap need honed and greased not ideal bit the bullet through them in a box and replace with ss ball valve taps much safer much better.
Al

 

[flxible]

Where are ss ball valve taps sourced?
George

 

[Speedtwin]

I got mine on e bay from Vinforlifepart very good quality all set up for the rapide with a fuel and a reserve side. come complete with washers the works.
About 36 quid delivered from what I remember.
I have bought a couple of sets over the last two years all I use now no more fuel on the floor.

Vincent Petrol Taps Fuel Gas Main Reserve Taper Brass Ethanol Seal QualityUKMADE | eBay

Vincent Top Quality Petrol Taps MADE IN ENGLAND Fit & Forget. Also read full listing description (Blue Link at bottom). Two Lever Arm Petrol Taps, one with an internal fuel tube making it the main tap and one without a tube making it the reserve Tap. 1/4 BSP Thread at both ends & complete with...

www.ebay.co.uk

 

[flxible]

Thanks Al!
George

 

[LoneStar]

There's a Ewarts round sliding tap on my Norton. On a hot day, the main tap slides closed, rather too often. It has cork seals on it. Are the rubber (viton?) ones sold by VOC Spares better?
Paul

Not sure about the VOC ones, but I've used a set of Viton O-rings sold on Ebay with success for some years now. Extremely cheap, preserve the original petcocks, and they haven't leaked yet. They are a bit too tight as delivered, but this is easily rectified by threading them on a rod, spinning, and sanding down the OD slightly.

Triumph Petcock. Norton, BSA, Vintage Ewarts fuel gas tap Viton O-ring repair | eBay

Viton O-ring repair for those leaky old Ewart's petcock corks. Cork seals do not stand up to ethanol in gas.Fitted in minutes with no need to remove the valve body from the tank or tank from the bike.

www.ebay.com

 

[Chris Launders]

I use 1/4" gas or radiator valves from one of the cheap DIY stores, no problems.

 

[BigEd]

I use 1/4" gas or radiator valves from one of the cheap DIY stores, no problems.

Me too. Cheap as chips from my handy local Screwfix hardware store. They don't leek or stick in my experience.

 

[Robert Watson]

Just remember what you need is 1/4 BSP at 19TPI In North America they are all 1/4 NPT at 18TPI