{"product_id":"mastiff-flat-four-side-valve-engine-stock-code-7672","title":"\"Mastiff\" flat four side valve engine","description":"\u003cp align=\"left\"\u003e   A well made flat four side valve engine to Len Mason's \"Mastiff\"  design. Appears never to have been run, although turns over freely, with  compression.\u003c\/p\u003e\u003cp align=\"left\"\u003eThe design is 3\/4 bore x 7\/8 stroke, 25cc  displacement with a 2:1 skew-driven shaft at the rear driving oil pump and  distributor. Cylinders and heads are jacketed for water-cooling, fuel is  supplied via a single down draught carburettor.\u003c\/p\u003e\u003cp align=\"left\"\u003eThe builder has  thoughtfully stamped the engine with cylinder numbers, points gap on the oil  filler cap, timing marks on the flywheel and firing order on top of the engine  (1-3-2-4) - along with an exhortation to use Castrol oil.\u003c\/p\u003e\u003cp align=\"left\"\u003eLength  10 inches\u003cbr\u003e  Height from base to top of engine 8 1\/2 inches\u003c\/p\u003e","brand":"Station Road Steam","offers":[{"title":"Default Title","offer_id":54010021839189,"sku":"7672","price":1150.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1023\/0094\/2677\/files\/7672-1.webp?v=1779899937","url":"https:\/\/stationroadsteam.com\/products\/mastiff-flat-four-side-valve-engine-stock-code-7672","provider":"Station Road Steam","version":"1.0","type":"link"}