East coaster exhaust leaks

[Rog greening]

Hi All, can’t stop the leaks from the the exhaust pipes, put two exhaust pipe washers on each side but still leaks any suggestions please, also what c spanner do I use to tighten up the exhaust pipe rings? New to 2 strokes so still learning
Thanks Rog

[John Wakefield]

The round copper composite washers currently available are too small in dia, you need to make up 2 solid alloy or copper square washers to following drawing. They need to be annealed before fitting, keep checking tightness of locking rings and the black oil will soon stop.

[tony]

If you can't make them Lasermaster will do 2 alloy ones for £4.50 +vat (£5.40) - copper is expensive

[John Wakefield]

Yes Tony aluminium is fine (I use that) but it needs to be soft alloy, Anneal by heating till you can burn a match stick on the ring then quench in water. They do take a little time to bed on, but keep tightening the locking rings up after each run.

[John Wakefield]

Worth also mentioning that you need to use a 'C' spanner to tighten the exhaust retaining rings, I have one for sale if one is needed.