{"product_id":"damper-cap-vented-use-bicycle-oil-auc2144sbo","title":"DAMPER CAP- VENTED- USE BICYCLE OIL- AUC2144SBO","description":"\u003cp data-start=\"0\" data-end=\"130\"\u003eThe part AUC2144SBO is a\u003cstrong\u003e \u003c\/strong\u003ebrass damper cap used on early SU carburettors made by the \u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eSU Carburettor Company\u003c\/span\u003e\u003c\/span\u003e. This does \u003cstrong\u003eNOT \u003c\/strong\u003efit the Mini or Moke HS2\/HS4 or HS6\u003c\/p\u003e\n\u003cp data-start=\"132\" data-end=\"153\"\u003eWhat this part is:\u003c\/p\u003e\n\u003cul data-start=\"154\" data-end=\"407\"\u003e\n\u003cli data-start=\"154\" data-end=\"194\"\u003e\n\u003cp data-start=\"156\" data-end=\"194\"\u003eType: Carburettor U-damper cap\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"195\" data-end=\"227\"\u003e\n\u003cp data-start=\"197\" data-end=\"227\"\u003eMaterial: Polished brass\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"228\" data-end=\"269\"\u003e\n\u003cp data-start=\"230\" data-end=\"269\"\u003eEdge: Knurled (for hand tightening)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"270\" data-end=\"310\"\u003e\n\u003cp data-start=\"272\" data-end=\"310\"\u003eTop marking: “USE BICYCLE OIL”\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"311\" data-end=\"407\"\u003e\n\u003cp data-start=\"313\" data-end=\"328\"\u003eFeatures:\u003c\/p\u003e\n\u003cul data-start=\"331\" data-end=\"407\"\u003e\n\u003cli data-start=\"331\" data-end=\"347\"\u003e\n\u003cp data-start=\"333\" data-end=\"347\"\u003eScrew-in cap\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"350\" data-end=\"383\"\u003e\n\u003cp data-start=\"352\" data-end=\"383\"\u003eSlot vent hole in the top\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"386\" data-end=\"407\"\u003e\n\u003cp data-start=\"388\" data-end=\"407\"\u003eKnurled grip edge\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"409\" data-end=\"425\"\u003eWhat it does\u003c\/p\u003e\n\u003cp data-start=\"426\" data-end=\"575\"\u003eOn many \u003cstrong data-start=\"434\" data-end=\"468\"\u003epre-war and early carburettors\u003c\/strong\u003e, the piston chamber had a \u003cstrong data-start=\"495\" data-end=\"512\"\u003edamper system\u003c\/strong\u003e to control how quickly the piston rises when you accelerate.\u003c\/p\u003e\n\u003cp data-start=\"577\" data-end=\"596\"\u003eThe \u003cstrong data-start=\"581\" data-end=\"595\"\u003edamper cap\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul data-start=\"597\" data-end=\"753\"\u003e\n\u003cli data-start=\"597\" data-end=\"632\"\u003e\n\u003cp data-start=\"599\" data-end=\"632\"\u003eSeals the top of the dashpot tube\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"633\" data-end=\"668\"\u003e\n\u003cp data-start=\"635\" data-end=\"668\"\u003eHolds the \u003cstrong data-start=\"645\" data-end=\"668\"\u003edamper rod assembly\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"669\" data-end=\"753\"\u003e\n\u003cp data-start=\"671\" data-end=\"753\"\u003eAllows \u003cstrong data-start=\"678\" data-end=\"697\"\u003eoil to be added\u003c\/strong\u003e (hence the “Use Bicycle Oil” instruction stamped on it)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"755\" data-end=\"872\"\u003eThe oil slows piston movement briefly during acceleration, which enriches the mixture and improves throttle response.\u003c\/p\u003e\n\u003cp data-start=\"874\" data-end=\"893\"\u003eImportant notes\u003c\/p\u003e\n\u003cul data-start=\"894\" data-end=\"1119\"\u003e\n\u003cli data-start=\"894\" data-end=\"1010\"\u003e\n\u003cp data-start=\"896\" data-end=\"950\"\u003eEarly SU carbs sometimes had \u003cstrong data-start=\"925\" data-end=\"949\"\u003edifferent cap styles\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul data-start=\"953\" data-end=\"1010\"\u003e\n\u003cli data-start=\"953\" data-end=\"986\"\u003e\n\u003cp data-start=\"955\" data-end=\"986\"\u003e\u003cstrong data-start=\"955\" data-end=\"970\"\u003eVented caps\u003c\/strong\u003e (like this one)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"989\" data-end=\"1010\"\u003e\n\u003cp data-start=\"991\" data-end=\"1010\"\u003e\u003cstrong data-start=\"991\" data-end=\"1010\"\u003eNon-vented caps\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1011\" data-end=\"1119\"\u003e\n\u003cp data-start=\"1013\" data-end=\"1119\"\u003eThey \u003cstrong data-start=\"1018\" data-end=\"1061\"\u003emust match the correct carburettor type\u003c\/strong\u003e, because using the wrong one can affect piston operation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1121\" data-end=\"1142\"\u003eAssociated washer\u003c\/p\u003e\n\u003cul data-start=\"1143\" data-end=\"1226\"\u003e\n\u003cli data-start=\"1143\" data-end=\"1170\"\u003e\n\u003cp data-start=\"1145\" data-end=\"1170\"\u003e\u003cstrong data-start=\"1145\" data-end=\"1156\"\u003eWasher:\u003c\/strong\u003e \u003cstrong data-start=\"1157\" data-end=\"1168\"\u003eAUC4900\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1171\" data-end=\"1226\"\u003e\n\u003cp data-start=\"1173\" data-end=\"1226\"\u003eThis sits under the cap to \u003cstrong data-start=\"1200\" data-end=\"1225\"\u003eseal the dashpot tube\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1228\" data-end=\"1252\"\u003eTypical applications\u003c\/p\u003e\n\u003cp data-start=\"1253\" data-end=\"1353\"\u003eThese caps are commonly found on \u003cstrong data-start=\"1286\" data-end=\"1343\"\u003eearly SU carburettors fitted to pre-WWII British cars\u003c\/strong\u003e, such as:\u003c\/p\u003e\n\u003cul data-start=\"1354\" data-end=\"1562\"\u003e\n\u003cli data-start=\"1354\" data-end=\"1408\"\u003e\n\u003cp data-start=\"1356\" data-end=\"1408\"\u003eearly \u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eMG\u003c\/span\u003e\u003c\/span\u003e models\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1409\" data-end=\"1450\"\u003e\n\u003cp data-start=\"1411\" data-end=\"1450\"\u003e\u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eAustin\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1451\" data-end=\"1492\"\u003e\n\u003cp data-start=\"1453\" data-end=\"1492\"\u003e\u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eMorris\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1493\" data-end=\"1562\"\u003e\n\u003cp data-start=\"1495\" data-end=\"1562\"\u003esome early \u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eJaguar\u003c\/span\u003e\u003c\/span\u003e carburettor setups\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Minisport","offers":[{"title":"Default Title","offer_id":53751115841846,"sku":"AUC2144SBO","price":89.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0727\/3322\/9366\/files\/20260305_143249.jpg?v=1772684089","url":"https:\/\/minisport.com.au\/products\/damper-cap-vented-use-bicycle-oil-auc2144sbo","provider":"Minisport","version":"1.0","type":"link"}