Does anyone have any experience of using the Expansion chamber available from Ost2rad on an ETZ 301 or a 250 ?, or know of any other sources of expansin chambers.
Just wondering as the original exhaust on my 301 is very tatty - I did clean it out with Caustic soda solution, but there is now somethig rattling inside. Given that and the fact that it looks very tatty I was wondering if it is worthwhile fitting one of the Ost2rad chambers.
I know that it is possible to cut open / repair the baffles clean out then weld back together the standard exhaust, but rather than mess around doingthat I could fit an expansion chamber.
Quite prepared to fiddle around with carb settings / timing etc if needs be if I was to fit an expansion chamber.
Over to you guys.....