Leaking banjo bolt

[Mike Wilson]

Neil's book documents his original, unrestored '58 A coupe.

Mike

[Martin Benade]

Unrestored but the owner did some repairs on it.

[Mike Wilson]

Good eye, Martin. I now see gaps between the aluminum washers and banjo fitting. The A parts manual calls them gaskets, 12x16, DIN 7603, 616.108.423.00. The B parts book lists the same part number but refers to them as gasket, fiber.

Mike

[Wes Bender]

Mike,
Does that page show things that were wrong?

Vic has given the word of the Lord. I’ll change the washers myself. Use the EZ stuff?

You can use the EZ stuff if you want. I would make sure surfaces in contact with the fiber washers are smooth and flat and you shouldn't need any sealer.

[Harlan Halsey]

Mike,
Does that page show things that were wrong?

Vic has given the word of the Lord. I’ll change the washers myself. Use the EZ stuff?

You can use the EZ stuff if you want. I would make sure surfaces in contact with the fiber washers are smooth and flat and you shouldn't need any sealer.

If all Mark's parts were cherry, this thread wouldn't exist! My banjo bolts don't leak but it costs me very little effort to use sealant, so I tend to use it, need it or not. 55 Pipe Sealant these days.

[Mark Roth]

I ordered this stuff from Amazon. PERMATEX 85420 PERMASHIELD FUEL RESISTANT GASKET DRESSING & SEALANT, 2 OZ TUBE

[Martin Benade]

I looked up 505 sealant as I hadn’t heard of it. Alcohol is the only non water-based thing it claims to seal. I suspect it’s not fuel proof but a good once-retightened fiber washer doesn’t leak anyway.

[Graeme Langford]

A couple of months back the drivers side Zenith had a slight weep from the banjo union. Nothing serious but needed attention. The existing aluminium washers looked okay and they were only 18months old but I bought a couple of new ones from PRS and it sealed up okay. Something else to keep an eye on

[Mike Wilson]

I agree with Wes. Make sure all the surfaces are flat and smooth including the washers.

Mike

[Al Zim]

Graeme: Any fuel leak should be considered CRITICAL! A little fuel leak can start a fire even if it is a small fire you will not notice it till the engine stops running and the car is smoking. GENERAL: Using a file to flatten the end of the carb inlet will not get you a flat surface. Too much torque on the banjo bolt will gradually assist the threads in the carburetor cover to distort. **Any fuel line that looks original (cloth covering) will seep fuel an important ingredient for fire.** ZIMZ suggests the use of fuel lines that are used on fuel injection vehicles with smooth (no perforations) screw style clamps. al zim

[Graeme Langford]

agreed Al. Thankfully my banjo was just sweating. No drips just a little moist at the base of the banjo. Rectified as quickly as possible.

[Mike Wilson]

Mike

[Al Zim]

Graeme: They come in the shop to be left for repair and there is a fire in the venturi of the carburetor. Fortunately it had a air filter without a paper filter.
YOU do not want to hear these stories. It is good to be cautious so your house does not burn down. al

[Steve Douglas]

Talking about the fiber washers for the Zenith and Fuel Pump Banjo bolts....#616.108.423.00. 12mm X 16mm x 1.15mm. I recently ordered a few extras and they won't fit the stepped part of the banjo bolt. The bolt shoulder is 12mm or on some bolts 11.98mm. diameter, the new washers I received are 11.96 id X 16mm od.. They will work when placed next to the carburetor inlet. I have some that are 12.12 and 12.14mm id., these slip on with out any problems. I did force one new one onto the bolt but after tightening it, I think it would need to be cut off as it's really stuck on. I have been using copper washers that I got from Amazon without any issues. $12 for a set pf 220 washers. I also used a drop of Green Locktite

https://www.amazon.com/Pieces-Washers-H ... 716&sr=8-4

[Harlan Halsey]

Steve, The banjo bolt washers are of two different sizes, 12MM ID near the bolt head, 11 mm I D near the carb. Proper sealing washer always go on easily with a little clearance, either aluminum or fiber or copper. If yours don't get some good ones. I just ordered 50 from McMaster Carr of the 12mm ones and I will give a bunch to Del after they arrive. You can get them from him in a few weeks.
No sealing washer will survive if over torqued. The aluminum ones are less tolerant and may not be reusable, but the fiber ones can usually be re used a couple of times.