Irvine engines are still alive and kiking they have been bought out by ripmax and if you go to the ripmax site you will be able to get the parts from and engines and more the last time I needed to contact them I was instructed to go through a dealer as ripmax are a very large company that does not deal with the public directly they have dealers all over the world their website is http://www.ripmax.com also there is plenty of irvine engines and parts that come up on the UK ebay